Microsoft office interop word что это

The C# programming language includes capabilities that make working with Microsoft Office API objects easier. With the advent of named and optional arguments, introduction of the dynamic type in .NET, and the ability to pass arguments to the reference parameters in COM methods, C# 4.0 quickly became the language of choice for working with COM and Interop objects.

This article talks about office interop objects in C# and how you can use them to interact with Microsoft Word and Microsoft Excel. Code examples are also provided to illustrate the concepts covered.

Prerequisites for working with Interop Objects

Visual Studio 2019 or Visual Studio 2022 must be installed on your computer to work with the code samples demonstrated in this C# tutorial. In this example, we will be using Visual Studio 2022. If you don’t have it installed in your computer, you can download it from here.

As of this writing, Visual Studio 2022 RC 2 has been released. You should also have Microsoft Office Excel 2007 or Microsoft Office Word 2007 (or their later versions) installed on your computer.

Read: Code Refactoring Tips for C#.

How to Create a New Console Application in Visual Studio

In this section we will examine how we can create a new console application project in Visual Studio 2022. Assuming Visual Studio 2022 is installed on your system, adhere to the steps given below to create a new Console Application project:

• Start the Visual Studio 2022 IDE.
• Click on “Create new project.”
• In the “Create new project” page, select C# in the language drop down list, Windows from the Platforms list and Console from the “Project types” list.
• Select Console App (.NET Framework) from the project templates displayed.

• Click Next.
• In the “Configure your new project” screen, specify the project’s name and the location where you would want the project to be created.
• Before you move on to the next screen, you can optionally select the “Place solution and project in the same directory” checkbox.

• Click Next.
• In the Additional Information screen, specify the Framework version you would like to use. We will use .NET Framework 4.8 in this example.

• Click Create to complete the process.

This will create a new .NET Framework Console application project in Visual Studio 2022. We will use this project in the sections that follow.

Install NuGet Packages

Install the following libraries from NuGet using the NuGet Package Manager or from the NuGet Package Manager Console:

Microsoft.Office.Interop.Word
Microsoft.Office.Interop.Excel

Read: Working with C# Math Operators.

How to Program Office Interop Objects in C#

In this section we will examine how to work with Office Interop objects and use them to connect to Microsoft Word and Excel and read/write data.

You must add the following using directives in your program for working with Word and Excel respectively when using Office interop objects:

using Microsoft.Office.Interop.Excel;
using Microsoft.Office.Interop.Word;

Working with Excel Interop Objects in C#

To begin, create a new Excel document named Test.xslx as a sample Excel file present in the root directory of the D:> drive. We will use this file in the following example.

You should create an instance of the Application class pertaining to the Microsoft.Office.Interop.Excel library for communicating with Excel. To do this, write the following C# code:

Application excelApplication = new Application();

The next step is to create an instance of the Workbook class to access a Workbook in Excel. You can create an instance of Workbook using the following code:

Workbook excelWorkBook = excel.Workbooks.Open(@"D:Test.xslx");

To read the name of the workbook, you can use the Name property of the workbook instance as shown in the code snippet given below:

string workbookName = excelWorkBook.Name;

The following code listing illustrates how you can display the value of the first cell of the first worksheet of the Excel document:

int worksheetcount = excelWorkBook.Worksheets.Count;
if (worksheetcount > 0) {
  Worksheet worksheet = (Worksheet) excelWorkBook.Worksheets[1];
  string worksheetName = worksheet.Name;
  var data = ((Range) worksheet.Cells[row, column]).Value;
  Console.WriteLine(data);
} else {
  Console.WriteLine("No worksheets available");
}

Here’s the complete code listing for your reference:

using Microsoft.Office.Interop.Excel;
using Microsoft.Office.Interop.Word;
using System;
using System.Runtime.InteropServices;

namespace OfficeInteropDemoApp
{
    class Program
    {
        static void Main(string[] args)
        {
            string filename = @"D:Test.xlsx";
            DisplayExcelCellValue(filename, 1, 1);
            Console.Read();
        }

        static void DisplayExcelCellValue(string filename, 
        int row, int column)
        {
            Microsoft.Office.Interop.Excel.Application 
            excelApplication = null;
            try
            {
                excelApplication = new 
                Microsoft.Office.Interop.Excel.Application();
                Workbook excelWorkBook = 
                excelApplication.Workbooks.Open(filename);
                string workbookName = excelWorkBook.Name;
                int worksheetcount = excelWorkBook.Worksheets.Count;

                if (worksheetcount > 0)
                {
                    Worksheet worksheet = 
                   (Worksheet)excelWorkBook.Worksheets[1];
                    string firstworksheetname = worksheet.Name;
                    var data = ((Microsoft.Office.Interop.Excel.Range)
                    worksheet.Cells[row, column]).Value;
                    Console.WriteLine(data);
                }
                else
                {
                    Console.WriteLine("No worksheets available");
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
            finally
            {
                if (excelApplication != null)
                {
                    excelApplication.Quit();
                    Marshal.FinalReleaseComObject(excelApplication);
                }
            }
        }
    }
}

Refer to the code listing given above. Note, the finally block of the DisplayExcelCellValue method. The Quit method is called on the Excel application instance to stop the application. Finally, a call to Marshall.FinalReleaseComObject sets the reference counter of the Excel application instance to 0.

The following code listing illustrates how you can create a new Excel document using Office Interop in C#. Note how a new workbook has been created:

static void CreateExcelDocument() 
{
	Microsoft.Office.Interop.Excel.Application excelApplication = null;

	try {
		excelApplication = new 
            Microsoft.Office.Interop.Excel.Application();
		Workbook excelWorkBook = excelApplication.Workbooks.Add();
		Worksheet worksheet = (Worksheet) excelWorkBook.Worksheets[1];
		worksheet.Cells[1, 1] = "Product Id";
		worksheet.Cells[1, 2] = "Product Name";
		worksheet.Cells[2, 1] = "1";
		worksheet.Cells[2, 2] = "Lenovo Laptop";
		worksheet.Cells[3, 1] = "2";
		worksheet.Cells[3, 2] = "DELL Laptop";
		excelWorkBook.SaveAs(@"D:Test.xls");
	}
	catch(Exception ex) {
		Console.WriteLine(ex.Message);
	}
	finally {
		if (excelApplication != null) {
			excelApplication.Quit();
			Marshal.FinalReleaseComObject(excelApplication);
		}
	}
}

When you run this code, a new Excel document will be created at the path specified with the following content inside:

Read: Working with Strings in C#.

Working with Word Interop Objects in C#

To work with Microsoft Word, you would need to create an instance of Microsoft.Office.Interop.Word.Application. Like Excel, this instance would be used to communicate with a Word document.

Microsoft.Office.Interop.Word.Application wordApplication = new Microsoft.Office.Interop.Word.Application();

The next step is to create a document instance using the Documents property of the Microsoft.Office.Interop.Word.Application instance we just created, as shown in the C# code snippet given below:

wordApplication.Documents.Add();

Next, you can create a paragraph and add some text to it using the as shown in the code snippet shown below:

var paragraph = document.Paragraphs.Add();
paragraph.Range.Text = "This is a sample text to demonstrate how Interop works...";

Then you can save the Word document using this code:

wordApplication.ActiveDocument.SaveAs(@"D:Test.doc", WdSaveFormat.wdFormatDocument);

Here is the complete code listing showing how to work with Microsoft Word Interop Objects in C# for your reference:

using Microsoft.Office.Interop.Excel;
using Microsoft.Office.Interop.Word;
using System;
using System.Runtime.InteropServices;

namespace OfficeInteropDemoApp
{
    class Program
    {
        static void Main(string[] args)
        {
            string filename = @"D:Test.doc";
            CreateWordDocument(filename);
            Console.Read();
        }

        static void CreateWordDocument(string filename)
        {
            Microsoft.Office.Interop.Word.Application 
            wordApplication = null;
            try
            {
                wordApplication = new 
                Microsoft.Office.Interop.Word.Application();
                var document = wordApplication.Documents.Add();
                var paragraph = document.Paragraphs.Add();
                paragraph.Range.Text = "This is a sample text to 
                demonstrate how Interop works...";
                wordApplication.ActiveDocument.SaveAs(filename, 
                WdSaveFormat.wdFormatDocument);
                document.Close();

            }
            finally
            {
                if (wordApplication != null)
                {
                    wordApplication.Quit();
                    Marshal.FinalReleaseComObject(wordApplication);
                }
            }
        }
    }
}

To read a Word document and display each word of the document you can use the following C# code:

static void ReadWordDocument(string filename)
        {
            Microsoft.Office.Interop.Word.Application 
            wordApplication = null;
            try
            {
                wordApplication = new 
                Microsoft.Office.Interop.Word.Application();
                Document document = 
                wordApplication.Documents.Open(filename);

                int count = document.Words.Count;
                for (int i = 1; i <= count; i++)
                {
                    string text = document.Words[i].Text;
                    Console.WriteLine(text);
                }
            }
            catch(Exception ex)
            {
                Console.Write(ex.Message);
            }
            finally
            {
                if (wordApplication != null)
                {
                    wordApplication.Quit();
                    Marshal.FinalReleaseComObject(wordApplication);
                }
            }
        }

Note how the Words property of the Word application instance has been used to retrieve the words contained in the document.

C# Interop Objects Tutorial

In this article we have examined how we can access Microsoft Office Interop objects using C#. Since there is still no support for working with Interop objects in .NET Core, we have created a .NET Framework Console Application in this example.

title	description	ms.custom	ms.date	ms.topic	dev_langs	helpviewer_keywords	author	ms.author	manager	ms.technology	ms.workload
Office primary interop assemblies	Learn how to use the primary interop assembly (PIA) to gain access the features of a Microsoft Office application from an Office project.	devdivchpfy22	12/23/2021	conceptual	VB CSharp	primary interop assemblies assemblies [Office development in Visual Studio], primary interop assemblies Office primary interop assemblies	John-Hart	johnhart	jmartens	office-development	office

Office primary interop assemblies

[!INCLUDE Visual Studio]

To use the features of a Microsoft Office application from an Office project, you must use the primary interop assembly (PIA) for the application. The PIA enables managed code to interact with a Microsoft Office application’s COM-based object model.

[!includeAdd-ins note]

When you create a new Office project, Visual Studio adds references to the PIAs that are required to build the project. In some scenarios, you might need to add references to other PIAs (for example, you can use a feature of Microsoft Office Word in a project for Microsoft Office Excel).

This article describes the following aspects of using the Microsoft Office PIAs in Office projects:

• Separate primary interop assemblies to build and run projects

• Use features of multiple Microsoft Office applications in a single project

• Full list of primary interop assemblies for Microsoft Office applications

For more information about primary interop assemblies, see Primary interop assemblies.

Separate primary interop assemblies to build and run projects

Visual Studio uses different sets of the PIAs on the development computer. These different sets of assemblies are in the following locations:

• A folder in the program files directory

  This set of the assemblies is used when you write code and build projects. Visual Studio installs these assemblies automatically.

• The global assembly cache

  This set of the assemblies is used during some development tasks, such as when you run or debug projects. Visual Studio doesn’t install and register these assemblies; you need to do it yourself.

Primary interop assemblies in the program files directory

The PIAs are automatically added to a location in the file system, outside of the global assembly cache, while you install Visual Studio. When you create a new project, Visual Studio automatically adds references to these copies of the PIAs to your project. Visual Studio uses these copies of the PIAs, instead of the assemblies in the global assembly cache, to resolve type references when you develop and build your project.

When different versions of the PIAs are registered in the global assembly cache, you can face several development issues. The added copies of PIAs will help you to avoid such issues.

For Visual Studio 2017 and later, these copies of the PIAs are installed to following shared locations on the development computer:

• %ProgramFiles%Microsoft Visual StudioSharedVisual Studio Tools for OfficePIA

• (or %ProgramFiles(x86)%Microsoft Visual StudioSharedVisual Studio Tools for OfficePIA on 64-bit operating systems)

[!NOTE]
For older versions of Visual Studio, these PIAs will be installed to the Visual Studio Tools for OfficePIA folder under the %ProgramFiles% folder for that version of Visual Studio.
For Example: %ProgramFiles(x86)%Microsoft Visual Studio 14.0Visual Studio Tools for OfficePIA

Primary interop assemblies in the global assembly cache

To perform certain development tasks, the PIAs must be installed and registered in the global assembly cache on the development computer. Typically, the PIAs are installed automatically when you install Office on the development computer. For more information, see Configure a computer to develop Office solutions.

The Office PIAs aren’t required on end-user computers to run Office solutions. For more information, see Design and create Office solutions.

Use features of multiple Microsoft Office applications in a single project

Every Office project template in Visual Studio is designed to work with a single Microsoft Office application. To use features in multiple Microsoft Office applications, or to use features in an application or component that doesn’t have a project in Visual Studio, you must add a reference to the required PIAs.

In most cases, you should add references to the PIAs that are installed by Visual Studio under the %ProgramFiles(x86)%Microsoft Visual StudioSharedVisual Studio Tools for OfficePIA directory. These versions of the assemblies appear on the Framework tab of the Reference Manager dialog box. For more information, see How to: Target Office applications through primary interop assemblies.

If you’ve installed and registered the PIAs in the global assembly cache, these versions of the assemblies appear on the COM tab of the Reference Manager dialog box. Avoid adding references to these versions of the assemblies, because there are some development issues that can occur when you use them. For example, if you’ve registered different versions of the PIAs in the global assembly cache, your project will automatically bind to the version of the assembly that was registered last, even if you specify a different version of the assembly on the COM tab of the Reference Manager dialog box.

[!NOTE]
Some assemblies are added to a project automatically when an assembly that references them is added. For example, references to the Office.dll and Microsoft.Vbe.Interop.dll assemblies are added automatically when you add a reference to the Word, Excel, Outlook, Microsoft Forms, or Graph assemblies.

Primary interop assemblies for Microsoft Office applications

The following table lists the primary interop assemblies that are available for [!INCLUDEOffice_16_short], [!INCLUDEOffice_15_short] and [!INCLUDEoffice14_long].

Office application or component	Primary interop assembly name
Microsoft Access 14.0 Object Library Microsoft Access 15.0 Object Library	Microsoft.Office.Interop.Access.dll
Microsoft Office 14.0 Access Database Engine Object Library Microsoft Office 15.0 Access Database Engine Object Library	Microsoft.Office.Interop.Access.Dao.dll
Microsoft Excel 14.0 Object Library Microsoft Excel 15.0 Object Library	Microsoft.Office.Interop.Excel.dll
Microsoft Graph 14.0 Object Library (used by PowerPoint, Access, and Word for graphs) Microsoft Graph 15.0 Object Library	Microsoft.Office.Interop.Graph.dll
Microsoft InfoPath 2.0 Type Library (for InfoPath 2007 only)	Microsoft.Office.Interop.InfoPath.dll
Microsoft InfoPath XML Interop Assembly (for InfoPath 2007 only)	Microsoft.Office.Interop.InfoPath.Xml.dll
Microsoft Office 14.0 Object Library (Office shared functionality) Microsoft Office 15.0 Object Library (Office shared functionality)	office.dll
Microsoft Office Outlook View Control (can be used in Web pages and applications to access your Inbox)	Microsoft.Office.Interop.OutlookViewCtl.dll
Microsoft Outlook 14.0 Object Library Microsoft Outlook 15.0 Object Library	Microsoft.Office.Interop.Outlook.dll
Microsoft PowerPoint 14.0 Object Library Microsoft PowerPoint 15.0 Object Library	Microsoft.Office.Interop.PowerPoint.dll
Microsoft Project 14.0 Object Library Microsoft Project 15.0 Object Library	Microsoft.Office.Interop.MSProject.dll
Microsoft Publisher 14.0 Object Library Microsoft Publisher 15.0 Object Library	Microsoft.Office.Interop.Publisher.dll
Microsoft SharePoint Designer 14.0 Web Object Reference Library	Microsoft.Office.Interop.SharePointDesigner.dll
Microsoft SharePoint Designer 14.0 Page Object Reference Library	Microsoft.Office.Interop.SharePointDesignerPage.dll
Microsoft Smart Tags 2.0 Type Library Note: Smart tags are deprecated in [!INCLUDEExcel_14_short] and [!INCLUDEWord_14_short].	Microsoft.Office.Interop.SmartTag.dll
Microsoft Visio 14.0 Type Library Microsoft Visio 15.0 Type Library	Microsoft.Office.Interop.Visio.dll
Microsoft Visio 14.0 Save As Web Type Library Microsoft Visio 15.0 Save As Web Type Library	Microsoft.Office.Interop.Visio.SaveAsWeb.dll
Microsoft Visio 14.0 Drawing Control Type Library Microsoft Visio 15.0 Drawing Control Type Library	Microsoft.Office.Interop.VisOcx.dll
Microsoft Word 14.0 Object Library Microsoft Word 15.0 Object Library	Microsoft.Office.Interop.Word.dll
Microsoft Visual Basic for Applications Extensibility 5.3	Microsoft.Vbe.Interop.dll

Binding redirect assemblies

When you install and register the Office PIAs in the global assembly cache (either with Office or by installing the redistributable package for the PIAs), the binding redirect assemblies are also installed only in the global assembly cache. These assemblies ensure that the correct version of the primary interop assemblies is loaded at run time.

For example, when a solution that references a [!INCLUDEoffice14_long] assembly runs on a computer that has the [!INCLUDEOffice_15_short] version of the same primary interop assembly, the binding redirect assembly instructs the [!INCLUDEdnprdnshort] runtime to load the [!INCLUDEOffice_15_short] version of the primary interop assembly.

For more information, see How to: Enable and disable automatic binding redirection.

See also

• How to: Target Office applications through primary interop assemblies
• Excel object model overview
• InfoPath solutions
• Outlook object model overview
• PowerPoint solutions
• Project solutions
• Visio object model overview
• Word object model overview
• General reference (Office development in Visual Studio)

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• C# TabControl: Windows Forms
• TableLayoutPanel: Windows Forms
• C# Take and TakeWhile Examples
• C# Task Examples (Task.Run, ContinueWith and Wait)
• C# Ternary Operator
• C# Text Property: Windows Forms
• C# TextBox.AppendText Method
• C# TextBox Example
• C# TextChanged Event
• C# TextFieldParser Examples: Read CSV
• C# ThreadStart and ParameterizedThreadStart
• C# throw Keyword Examples
• C# Timer Examples
• C# TimeSpan Examples
• C# TrimEnd and TrimStart
• C# True and False
• C# Truncate String
• C# String ToLower() method
• C# String ToCharArray() method
• C# String ToUpperInvariant() method
• C# String Trim() method
• C# Assign Variables Optimization
• C# Array.Resize Examples
• C# Array.Sort: Keys, Values and Ranges
• C# Array.Reverse Example
• C# Array Slice, Get Elements Between Indexes
• C# Array.TrueForAll: Use Lambda to Test All Elements
• C# ArrayTypeMismatchException
• C# as: Cast Examples
• C# ASCII Table
• C# ASCII Transformation, Convert Char to Index
• C# AsEnumerable Method
• C# AsParallel Example
• ASP.NET AspLiteral
• C# BaseStream Property
• C# Console.Beep Example
• C# Benchmark
• C# BinaryReader Example (Use ReadInt32)
• C# BinaryWriter Type
• C# BitArray Examples
• C# BitConverter Examples
• C# Bitcount Examples
• C# Bool Methods, Return True and False
• C# bool Sort Examples (True to False)
• C# Caesar Cipher
• C# Cast Extension: System.Linq
• C# Cast to Int (Convert Double to Int)
• C# Cast Examples
• C# catch Examples
• C# Change Characters in String (ToCharArray, For Loop)
• C# Char Combine: Get String From Chars
• C# char.IsDigit (If Char Is Between 0 and 9)
• C# char.IsLower and IsUpper
• C# Character Literal (const char)
• C# Char Lowercase Optimization
• C# Char Test (If Char in String Equals a Value)
• C# char.ToLower and ToUpper
• C# char Examples
• C# abstract Keyword
• C# Action Object (Lambda That Returns Void)
• C# Aggregate: Use Lambda to Accumulate Value
• C# AggressiveInlining: MethodImpl Attribute
• C# Anagram Method
• C# And Bitwise Operator
• C# Anonymous Function (Delegate With No Name)
• C# Any Method, Returns True If Match Exists
• C# StringBuilder Append and AppendLine
• C# StringBuilder AppendFormat
• ASP.NET appSettings Example
• C# ArgumentException: Invalid Arguments
• C# Array.ConvertAll, Change Type of Elements
• C# Array.Copy Examples
• C# Array.CreateInstance Method
• C# Array and Dictionary Test, Integer Lookups
• C# Array.Exists Method, Search Arrays
• C# Array.Find Examples, Search Array With Lambda
• C# Array.ForEach: Use Lambda on Every Element
• C# Array Versus List Memory Usage
• C# Array Property, Return Empty Array
• C# CharEnumerator
• C# Chart, Windows Forms (Series and Points)
• C# CheckBox: Windows Forms
• C# class Examples
• C# Clear Dictionary: Remove All Keys
• C# Clone Examples: ICloneable Interface
• C# Closest Date (Find Dates Nearest in Time)
• C# Combine Arrays: List, Array.Copy and Buffer.BlockCopy
• C# Combine Dictionary Keys
• C# ComboBox: Windows Forms
• C# CompareTo Int Method
• C# Comparison Object, Used With Array.Sort
• C# Compress Data: GZIP
• C# Console.Read Method
• C# Console.ReadKey Example
• C# Console.ReadLine Example (While Loop)
• C# Console.SetOut and Console.SetIn
• C# Console.WindowHeight
• C# Console.Write, Append With No Newline
• C# Console.WriteLine (Print)
• C# const Example
• C# Constraint Puzzle Solver
• C# Count Characters in String
• C# Count, Dictionary (Get Number of Keys)
• C# Count Letter Frequencies
• C# Count Extension Method: Use Lambda to Count
• C# CSV Methods (Parse and Segment)
• C# DataRow Field Method: Cast DataTable Cell
• C# Get Day Count Elapsed From DateTime
• C# DateTime Format
• C# DateTime.Now (Current Time)
• C# DateTime.Today (Current Day With Zero Time)
• C# DateTime.TryParse and TryParseExact
• C# DateTime Examples
• C# DateTimePicker Example
• C# Debug.Write Examples
• C# Visual Studio Debugging Tutorial
• C# decimal Examples
• C# DayOfWeek
• C# Enum.Format Method (typeof Enum)
• C# Enum.GetName, GetNames: Get String Array From Enum
• C# Enum.Parse, TryParse: Convert String to Enum
• C# Error and Warning Directives
• C# ErrorProvider Control: Windows Forms
• C# event Examples
• C# Get Every Nth Element From List (Modulo)
• C# Excel Interop Example
• C# Except (Remove Elements From Collection)
• C# Extension Method
• C# extern alias Example
• C# Convert Feet, Inches
• C# File.Delete
• C# File Equals: Compare Files
• C# File.Exists Method
• C# try Keyword
• C# TryGetValue (Get Value From Dictionary)
• C# Tuple Examples
• C# Type Class: Returned by typeof, GetType
• C# TypeInitializationException
• C# Union: Combine and Remove Duplicate Elements
• C# Unreachable Code Detected
• C# Unsafe Keyword: Fixed, Pointers
• C# Uppercase First Letter
• C# Uri and UriBuilder Classes
• C# Using Alias Example
• C# using Statement: Dispose and IDisposable
• C# value Keyword
• C# ValueTuple Examples (System.ValueTuple, ToTuple)
• C# ValueType Examples
• C# Variable Initializer for Class Field
• C# Word Count
• C# Word Interop: Microsoft.Office.Interop.Word
• C# XElement Example (XElement.Load, XName)
• C# Zip Method (Use Lambda on Two Collections)
• C# File.Move Method, Rename File
• C# File.Open Examples
• C# File.ReadAllBytes, Get Byte Array From File
• C# File.ReadAllLines, Get String Array From File
• C# File.ReadAllText, Get String From File
• C# File.ReadLines, Use foreach Over Strings
• C# File.Replace Method
• C# FileInfo Length, Get File Size
• C# FileInfo Examples
• C# File Handling
• C# Filename With Date Example (DateTime.Now)
• C# FileNotFoundException (catch Example)
• C# FileStream Length, Get Byte Count From File
• C# FileStream Example, File.Create
• C# FileSystemWatcher Tutorial (Changed, e.Name)
• C# finally Keyword
• C# First Sentence
• C# FirstOrDefault (Get First Element If It Exists)
• C# Fisher Yates Shuffle: Generic Method
• C# fixed Keyword (unsafe)
• C# Flatten Array (Convert 2D to 1D)
• C# First Words in String
• C# First (Get Matching Element With Lambda)
• C# ContainsKey Method (Key Exists in Dictionary)
• C# Convert ArrayList to Array (Use ToArray)
• C# Convert ArrayList to List
• C# Convert Bool to Int
• C# Convert Bytes to Megabytes
• C# Convert Degrees Celsius to Fahrenheit
• C# Convert Dictionary to List
• C# Convert Dictionary to String (Write to File)
• C# Convert List to Array
• C# Convert List to DataTable (DataGridView)
• C# Convert List to String
• C# Convert Miles to Kilometers
• C# Convert Milliseconds, Seconds, Minutes
• C# Convert Nanoseconds, Microseconds, Milliseconds
• C# Convert String Array to String
• C# Convert TimeSpan to Long
• C# Convert Types
• C# Copy Dictionary
• C# Count Elements in Array and List
• C# FromOADate and Excel Dates
• C# Generic Class, Generic Method Examples
• C# GetEnumerator: While MoveNext, Get Current
• C# GetHashCode (String Method)
• C# Thumbnail Image With GetThumbnailImage
• C# GetType Method
• C# Global Variable Examples (Public Static Property)
• ASP.NET Global Variables Example
• C# Group By Operator: LINQ
• GroupBox: Windows Forms
• C# GroupBy Method: LINQ
• C# GroupJoin Method
• C# GZipStream Example (DeflateStream)
• C# HashSet Examples
• C# Hashtable Examples
• HelpProvider Control Use
• C# HTML and XML Handling
• C# HtmlEncode and HtmlDecode
• C# HtmlTextWriter Example
• C# HttpUtility.HtmlEncode Methods
• C# HybridDictionary
• C# default Operator
• C# DefaultIfEmpty Method
• C# Define and Undef Directives
• C# Destructor
• C# DialogResult: Windows Forms
• C# Dictionary, Read and Write Binary File
• C# Dictionary Memory
• C# Dictionary Optimization, Increase Capacity
• C# Dictionary Optimization, Test With ContainsKey
• C# DictionaryEntry Example (Hashtable)
• C# Directives
• C# Directory.CreateDirectory, Create New Folder
• C# Directory.GetFiles Example (Get List of Files)
• C# DivideByZeroException
• C# DllImport Attribute
• C# Do While Loop Example
• C# DriveInfo Examples
• C# DropDownItems Control
• C# IComparable Example, CompareTo: Sort Objects
• C# IDictionary Generic Interface
• C# IEnumerable Examples
• C# IList Generic Interface: List and Array
• C# Image Type
• C# ImageList Use: Windows Forms
• C# Increment String That Contains a Number
• C# Increment, Preincrement and Decrement Ints
• Dot Net Perls
• C# Indexer Examples (This Keyword, get and set)
• C# IndexOutOfRangeException
• C# Inheritance
• C# Insert String Examples
• C# int Array
• C# Interface Examples
• C# Interlocked Examples: Add, CompareExchange
• C# Intersect: Get Common Elements
• C# InvalidCastException
• C# InvalidOperationException: Collection Was Modified
• C# IOException Type: File, Directory Not Found
• C# IOrderedEnumerable (Query Expression With orderby)
• C# is: Cast Examples
• C# IsFixedSize, IsReadOnly and IsSynchronized Arrays
• C# string.IsNullOrEmpty, IsNullOrWhiteSpace
• C# IsSorted Method: If Array Is Already Sorted
• C# Jagged Array Examples
• C# join Examples (LINQ)
• C# KeyCode Property and KeyDown
• C# KeyNotFoundException: Key Not Present in Dictionary
• C# KeyValuePair Examples
• C# Line Count for File
• C# Line Directive
• C# LinkedList
• C# List CopyTo (Copy List Elements to Array)
• C# List Equals (If Elements Are the Same)
• C# List Find and Exists Examples
• C# List Insert Performance
• ASP.NET LiteralControl Example
• C# Locality Optimizations (Memory Hierarchy)
• C# lock Keyword
• C# Long and ulong Types
• C# Loop Over String Chars: Foreach, For
• C# Loop Over String Array
• C# Main args Examples
• C# Map Example
• ASP.NET MapPath: Virtual and Physical Paths
• C# Mask Optimization
• C# MaskedTextBox Example
• C# Math.Abs: Absolute Value
• C# Math.Ceiling Usage
• C# Math.Floor Method
• C# Math.Max and Math.Min Examples
• C# Math.Pow Method, Exponents
• C# Math.Round Examples: MidpointRounding
• C# Math Type
• C# Max and Min: Get Highest or Lowest Element
• C# MemoryFailPoint and InsufficientMemoryException
• C# MemoryStream: Use Stream on Byte Array
• C# MenuStrip: Windows Forms
• C# Modulo Operator: Get Remainder From Division
• C# MonthCalendar Control: Windows Forms
• C# Multiple Return Values
• C# Multiply Numbers
• C# namespace Keyword
• C# NameValueCollection Usage
• C# Nested Lists: Create 2D List or Jagged List
• C# Nested Switch Statement
• C# Environment.NewLine
• C# Normalize, IsNormalized Methods
• C# Null String Example
• C# null Keyword
• C# Nullable Examples
• C# NullReferenceException and Null Parameter
• C# Object Array
• C# Obsolete Attribute
• C# OfType Examples
• C# OpenFileDialog Example
• C# operator Keyword
• C# Odd and Even Numbers
• C# Bitwise Or
• C# orderby Query Keyword
• C# out Parameter
• C# OutOfMemoryException
• C# OverflowException
• C# Overload Method
• C# Override Method
• C# PadRight and PadLeft: String Columns
• C# Get Paragraph From HTML With Regex
• C# Parallel.For Example (Benchmark)
• C# Parallel.Invoke: Run Methods on Separate Threads
• C# Parameter Optimization
• C# Parameter Passing, ref and out
• C# params Keyword
• C# int.Parse: Convert Strings to Integers
• C# partial Keyword
• C# Path.ChangeExtension
• C# Path Exists Example
• C# Path.GetExtension: File Extension
• C# Path.GetRandomFileName Method
• C# Pragma Directive
• C# Predicate (Lambda That Returns True or False)
• C# Pretty Date Format (Hours or Minutes Ago)
• C# PreviewKeyDown Event
• C# Random Lowercase Letter
• C# Random Paragraphs and Sentences
• C# Random String
• C# Random Number Examples
• C# StreamReader ReadLine, ReadLineAsync Examples
• C# readonly Keyword
• C# Recursion Example
• C# Regex, Read and Match File Lines
• C# Regex Groups, Named Group Example
• C# Regex.Matches Quote Example
• C# Regex.Matches Method: foreach Match, Capture
• C# Regex.Replace, Matching End of String
• C# Regex.Replace, Remove Numbers From String
• C# Regex.Replace, Merge Multiple Spaces
• C# Regex.Replace Examples: MatchEvaluator
• C# Regex.Split, Get Numbers From String
• C# Regex.Split Examples
• C# Regex Trim, Remove Start and End Spaces
• C# RegexOptions.Compiled
• C# RegexOptions.IgnoreCase Example
• C# RegexOptions.Multiline
• C# Region and endregion
• C# Remove Char From String at Index
• C# Remove Element
• C# Remove HTML Tags
• C# Remove String
• C# Reserved Filenames
• C# return Keyword
• C# Reverse String
• C# Reverse Words
• C# Reverse Extension Method
• C# RichTextBox Example
• C# Right String Part
• C# RNGCryptoServiceProvider Example
• C# ROT13 Method, Char Lookup Table
• C# SelectMany Example: LINQ
• C# Sentinel Optimization
• C# SequenceEqual Method (If Two Arrays Are Equal)
• C# Shift Operators (Bitwise)
• C# Short and ushort Types
• C# Single Method: Get Element If Only One Matches
• C# SingleOrDefault
• C# Singleton Pattern Versus Static Class
• C# Singleton Class
• C# sizeof Keyword
• C# Skip and SkipWhile Examples
• C# Sleep Method (Pause)
• C# Sort Dictionary: Keys and Values
• C# Sort by File Size
• C# Sort, Ignore Leading Chars
• C# Sort KeyValuePair List: CompareTo
• C# Sort Strings by Length
• C# Thread.SpinWait Example
• C# Math.Sqrt Method
• C# stackalloc Operator
• C# StackOverflowException
• C# StartsWith and EndsWith String Methods
• C# Static Array
• C# Static Dictionary
• C# Stopwatch Examples
• C# Stream
• C# StreamReader ReadToEnd Example (Read Entire File)
• C# StreamReader ReadToEndAsync Example (Performance)
• C# StreamReader Examples
• C# StreamWriter Examples
• C# String Append (Add Strings)
• C# String Compare and CompareTo Methods
• C# String Constructor (new string)
• C# string.Copy Method
• C# CopyTo String Method: Put Chars in Array
• C# Empty String Examples
• C# String Equals Examples
• C# String For Loop, Count Spaces in String
• C# string.Intern and IsInterned
• C# String IsUpper, IsLower
• C# String Length Property: Get Character Count
• C# String Literal: Newline and Quote Examples
• C# StringBuilder Capacity
• C# StringBuilder Clear (Set Length to Zero)
• C# StringBuilder Data Types
• C# StringBuilder Performance
• C# StringBuilder Equals (If Chars Are Equal)
• C# StringBuilder Memory
• C# StringBuilder ToString: Get String From StringBuilder
• C# StringWriter Class
• C# Sum Method: Add up All Numbers
• C# Switch Char, Test Chars With Cases
• C# Switch Enum
• C# System (using System namespace)
• C# Tag Property: Windows Forms
• C# TextInfo Examples
• C# TextReader, Returned by File.OpenText
• C# TextWriter, Returned by File.CreateText
• C# this Keyword
• C# ThreadPool
• C# Thread Join Method (Join Array of Threads)
• C# ThreadPool.SetMinThreads Method
• C# TimeZone Examples
• C# Get Title From HTML With Regex
• C# ToArray Extension Method
• C# ToCharArray: Convert String to Array
• C# ToDictionary Method
• C# Token
• C# ToList Extension Method
• C# ToLookup Method (Get ILookup)
• C# ToLower and ToUpper: Uppercase and Lowercase Strings
• ToolStripContainer Control: Dock, Properties
• C# ToolTip: Windows Forms
• C# ToString Integer Optimization
• C# ToString: Get String From Object
• C# ToTitleCase Method
• C# TrackBar: Windows Forms
• C# Tree and Nodes Example: Directed Acyclic Word Graph
• C# TreeView Tutorial
• C# Trim Strings
• C# Thread Methods
• C# History
• C# Features
• C# Variables
• C# Data Types
• C# Operators
• C# Keywords
• C# New Features | C# Version Features
• C# Programs
• C# Program to swap numbers without third variable
• C# Program to convert Decimal to Binary
• C# Program to Convert Number in Characters
• C# Program to Print Alphabet Triangle
• C# Program to print Number Triangle
• C# Program to generate Fibonacci Triangle
• C# String Compare() method
• C# String CompareOrdinal() method
• C# String CompareTo() method
• C# String Concat() method
• C# String Contains() method
• C# String CopyTo() method
• C# String EndsWith() method
• C# String Equals() method
• C# String Format() method
• C# String IndexOf() method
• C# String Insert() method
• C# String Intern(String str) method
• C# String IsInterned() method
• C# String Normalize() method
• C# String IsNullOrEmpty() method
• C# String IsNullOrWhiteSpace() method
• C# String Join() method
• C# String LastIndexOf() method
• C# String LastIndexOfAny() method
• C# String PadLeft() method
• C# String PadRight() method
• C# Nullable
• C# String Remove() method
• C# String Replace() method
• C# String Split() method
• C# String StartsWith() method
• C# String SubString() method
• C# Partial Types
• C# Iterators
• C# Delegate Covariance
• C# Delegate Inference
• C# Anonymous Types
• C# Extension Methods
• C# Query Expression
• C# Partial Method
• C# Implicitly Typed Local Variable
• C# Object and Collection Initializer
• C# Auto Implemented Properties
• C# Dynamic Binding
• C# Named and Optional Arguments
• C# Asynchronous Methods
• C# Caller Info Attributes
• C# Using Static Directive
• C# Exception Filters
• C# Await in Catch Finally Blocks
• C# Default Values for Getter Only Properties
• C# Expression Bodied Members
• C# Null Propagator
• C# String Interpolation
• C# nameof operator
• C# Dictionary Initializer
• C# Pattern Matching
• C# Tuples
• C# Deconstruction
• C# Local Functions
• C# Binary Literals
• C# Ref Returns and Locals
• C# Expression Bodied Constructors and Finalizers
• C# Expression Bodied Getters and Setters
• C# Async Main
• C# Default Expression

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