Expressions.Item(Object) Method

Definition

Namespace:

EnvDTE

Assembly:

Microsoft.VisualStudio.Interop.dll

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.