Thread Constructor (ThreadStart)

Initializes a new instance of the Thread class.

Namespace:  System.Threading
Assembly:  mscorlib (in mscorlib.dll)

public Thread(
	ThreadStart start
)

Parameters

start
Type: System.Threading.ThreadStart

A ThreadStart delegate that represents the methods to be invoked when this thread begins executing.

ExceptionCondition
ArgumentNullException

The start parameter is null.

A thread does not begin executing when it is created. To schedule the thread for execution, call the Start method.

NoteNote

Visual Basic users can omit the ThreadStart constructor when creating a thread. Use the AddressOf operator when passing your method for example Dim t As New Thread(AddressOf ThreadProc). Visual Basic automatically calls the ThreadStart constructor.

The following code example shows how to create a thread that executes a static method.

using System;
using System.Threading;

class Test
{
    static void Main() 
    {
        Thread newThread = 
            new Thread(new ThreadStart(Work.DoWork));
        newThread.Start();
    }
}

class Work 
{
    Work() {}

    public static void DoWork() {}
}

The following code example shows how to create a thread that executes an instance method.

using System;
using System.Threading;

class Test
{
    static void Main() 
    {
        Work threadWork = new Work();
        Thread newThread = 
            new Thread(new ThreadStart(threadWork.DoWork));
        newThread.Start();
    }
}

class Work 
{
    public Work() {}

    public void DoWork() {}
}

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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