Expressions.Item(Object) Method

Reference

Definition

Namespace:: EnvDTE

Assembly:: EnvDTE.dll

Assembly:: Microsoft.VisualStudio.Interop.dll

Package:: Microsoft.VisualStudio.Interop v17.12.40391

Important

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Returns a Expression object in a Expressions collection.

public:
 EnvDTE::Expression ^ Item(System::Object ^ index);

public:
 EnvDTE::Expression ^ Item(Platform::Object ^ index);

EnvDTE::Expression Item(winrt::Windows::Foundation::IInspectable const & index);

[System.Runtime.InteropServices.DispId(0)]
public EnvDTE.Expression Item (object index);

[<System.Runtime.InteropServices.DispId(0)>]
abstract member Item : obj -> EnvDTE.Expression

Public Function Item (index As Object) As Expression

Parameters

index: Object

Required. The index of the Expression object to return.

Returns

Expression

An Expression object.

Attributes: DispIdAttribute

Examples

The following example demonstrates how to use the Item method.

public static void Item(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("Item Method 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 Item(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

Remarks

The Item method throws a System.ArgumentException exception if the collection cannot find the object that corresponds to the index value.

Applies to

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