Thread.IsAlive Property

Article
05/11/2014

Gets whether the referenced thread is still alive.

Namespace: EnvDTE
Assembly: EnvDTE (in EnvDTE.dll)

Syntax

'Declaration
ReadOnly Property IsAlive As Boolean

bool IsAlive { get; }

property bool IsAlive {
    bool get ();
}

abstract IsAlive : bool with get

function get IsAlive () : boolean

Property Value

Type: System.Boolean
A Boolean value.

Remarks

Returns true if the referenced thread is still alive; otherwise, false.

Note

The thread state may change before this function returns.

Examples

The following example demonstrates how to use the IsAlive property.

To test this property

Set the breakpoint inside the worker thread callback method.
Run the target application in the debug mode.
When the application stops on the breakpoint, run the add-in.

public static void TestThreadProperties(DTE dte)
{
    // Setup debug Output window.
    Window w = (Window)dte.Windows.Item(EnvDTE.Constants.vsWindowKindOutput);
    w.Visible = true;
    OutputWindow ow = (OutputWindow)w.Object;
    OutputWindowPane owp = ow.OutputWindowPanes.Add("Thread Test");
    owp.Activate();

    EnvDTE.Threads threads = dte.Debugger.CurrentProgram.Threads;
    owp.OutputString("\nNumber of items in the Thread collection: " + 
                     threads.Item(1).Collection.Count + "\n");
    foreach(EnvDTE.Thread thread in threads)
    {
        owp.OutputString("\nThread: " + thread.ID + "  Name: " + thread.Name);
        owp.OutputString("\n  Edition of the environment : " + thread.DTE.Edition);
        owp.OutputString("\n  Is alive                   : " + thread.IsAlive);
        owp.OutputString("\n  Is frozen                  : " + thread.IsFrozen);
        owp.OutputString("\n  Location                   : " + thread.Location);
        owp.OutputString("\n  Parent's current mode      : " + thread.Parent.CurrentMode);
        owp.OutputString("\n  Priority                   : " + thread.Priority);
        owp.OutputString("\n  Program name               : " + thread.Program.Name);
        owp.OutputString("\n  Number of stack frames     : " + thread.StackFrames.Count);
        owp.OutputString("\n  Suspended number of times  : " + thread.SuspendCount);
    }
}

Shared Sub ThreadProperties(ByRef dte As EnvDTE.DTE)
    Dim str As String
    Dim threads As EnvDTE.Threads = dte.Debugger.CurrentProgram.Threads
    str = "Number of items in the Thread collection: " + _
          threads.Item(1).Collection.Count.ToString()
    For Each thread As EnvDTE.Thread In threads
        str += vbCrLf + vbCrLf + "  Thread: " + thread.ID.ToString()
        str += vbCrLf + "    Edition of the environment: " + thread.DTE.Edition
        str += vbCrLf + "    Is alive: " + thread.IsAlive.ToString()
        str += vbCrLf + "    Is frozen: " + thread.IsFrozen.ToString()
        str += vbCrLf + "    Location: " + thread.Location
        str += vbCrLf + "    Parent's current mode: " + _
               thread.Parent.CurrentMode.ToString()
        str += vbCrLf + "    Priority: " + thread.Priority
        str += vbCrLf + "    Program name: " + thread.Program.Name
        str += vbCrLf + "    Number of stack frames: " + _
               thread.StackFrames.Count.ToString()
        str += vbCrLf + "    Suspended number of times: " + _
               thread.SuspendCount.ToString()
    Next
    MessageBox.Show(str, "Thread Test - Properties")
End Sub

.NET Framework Security

Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.

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