Expressions.DTE Property

Gets the top-level extensibility object.

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

Syntax

'Declaration
ReadOnly Property DTE As DTE

'Usage
Dim instance As Expressions 
Dim value As DTE 

value = instance.DTE

DTE DTE { get; }

property DTE^ DTE {
    DTE^ get ();
}

function get DTE () : DTE

Property Value

Type: EnvDTE.DTE
A DTE object.

Remarks

In Visual Studio, the DTE object is the root of the automation model, which other object models often call "Application."

Examples

The following example demonstrates how to use the DTE property.

To test this property:

1. The target application must contain a class A. The function Main must create an instance of a class A called "a".

2. Set a breakpoint in the function Main after an instance of class A is created and its member variables are initialized.

3. Run the target application in the debug mode.

4. When the application stops at the breakpoint, run the add-in.

public static void DTE(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("DTE Property Test");
    owp.Activate();

    EnvDTE.Expression exp = dte.Debugger.GetExpression("a", true, 1);
    EnvDTE.Expressions exps = exp.DataMembers;
    owp.OutputString("\nExpression count: " + exps.Count);
    owp.OutputString("\nEdition of the environment: " + exps.DTE.Edition);
    owp.OutputString("\nThe name of the current program: " + 
                     exps.Parent.CurrentProgram.Name);
    owp.OutputString("\nSecond expression: " + exps.Item(2).Name);
}

Shared Sub DTE(ByRef dte As EnvDTE.DTE)
    Dim exp As EnvDTE.Expression = dte.Debugger.GetExpression("a", True, 1)
    Dim exps As EnvDTE.Expressions = exp.DataMembers
    Dim str As String = vbCrLf
    str = "Expression count: " + exps.Count.ToString()
    str += vbCrLf + "Edition of the environment: " + exps.DTE.Edition
    str += vbCrLf + "The name of the current program: " + _
           exps.Parent.CurrentProgram.Name
    str += vbCrLf + "Second expression: " + exps.Item(2).Name
    MessageBox.Show(str, "Expression Test - Expressions 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.

See Also

Reference

Expressions Interface

Expressions Members

EnvDTE Namespace

Other Resources

How to: Compile and Run the Automation Object Model Code Examples