UndoContext.IsOpen Property

Reference

Definition

Namespace:: EnvDTE

Assembly:: EnvDTE.dll

Assembly:: Microsoft.VisualStudio.Interop.dll

Package:: Microsoft.VisualStudio.Interop v17.12.40391

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Gets whether an undo operation is currently in effect or if a solution is open.

public:
 property bool IsOpen { bool get(); };

public:
 property bool IsOpen { bool get(); };

[System.Runtime.InteropServices.DispId(8)]
public bool IsOpen { [System.Runtime.InteropServices.DispId(8)] get; }

[<System.Runtime.InteropServices.DispId(8)>]
[<get: System.Runtime.InteropServices.DispId(8)>]
member this.IsOpen : bool

Public ReadOnly Property IsOpen As Boolean

Property Value

Boolean

A Boolean value indicating true if an undo operation is in effect or if a solution is open, false if not.

Attributes: DispIdAttribute

Examples

Sub IsOpenExample(ByVal dte As DTE2)  

    ' Create a new text file.  
    dte.ItemOperations.NewFile()  

    Dim doc As TextDocument = _  
        CType(dte.ActiveDocument.Object("TextDocument"), TextDocument)  
    Dim done As Boolean = False  

    Do While Not done  
        If dte.UndoContext.IsOpen = False Then  
            Try  
                dte.UndoContext.Open("Insert 10 Lines")  

                ' Insert 10 lines of text into the new document.  
                Dim point As EditPoint = doc.StartPoint.CreateEditPoint  
                Dim i As Integer  

                For i = 1 To 10  
                    point.Insert("This is a test." & vbCrLf)  
                Next  

                done = True  
            Catch  
            Finally  
                If done Then dte.UndoContext.Close()  
            End Try  
        End If  
    Loop  

End Sub

public void IsOpenExample(DTE2 dte)  
{  
    // Create a new text file.  
    dte.ItemOperations.NewFile(@"General\Text File", "",   
        Constants.vsViewKindPrimary);  

    TextDocument doc =   
        (TextDocument)dte.ActiveDocument.Object("TextDocument");  
    bool done = false;  

    while (!done)  
    {  
        if (!dte.UndoContext.IsOpen)  
        {  
            try  
            {  
                dte.UndoContext.Open("Insert 10 Lines", false);  

                // Insert 10 lines of text into the new document.  
                EditPoint point = doc.StartPoint.CreateEditPoint();  

                for (int i = 0; i < 10; ++i)  
                    point.Insert("This is a test.\n");  

                done = true;  
            }  
            catch  
            {  
            }  
            finally  
            {  
                if (done) dte.UndoContext.Close();  
            }  
        }  
    }  
}

Remarks

An undo operation is in effect if the UndoContext object is open.

An open solution does not necessarily have a solution (.sln) file, because it might not have been saved yet.

Applies to

Partilhar via