Expression.Collection Property

Gets the collection containing the object supporting this property or contained within this code construct.

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

Syntax

'Declaration
ReadOnly Property Collection As Expressions

'Usage
Dim instance As Expression 
Dim value As Expressions 

value = instance.Collection

Expressions Collection { get; }

property Expressions^ Collection {
    Expressions^ get ();
}

function get Collection () : Expressions

Property Value

Type: EnvDTE.Expressions
An Expressions collection.

Examples

The following example demonstrates how to use the Collection 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 Collection(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("Collection 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 Collection(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 - Collection Property")
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

Expression Interface

Expression Members

EnvDTE Namespace

Other Resources

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