Document.Undo Methode
Definition
Wichtig
Einige Informationen beziehen sich auf Vorabversionen, die vor dem Release ggf. grundlegend überarbeitet werden. Microsoft übernimmt hinsichtlich der hier bereitgestellten Informationen keine Gewährleistungen, seien sie ausdrücklich oder konkludent.
Kehrt die Aktion um, die zuletzt vom Benutzer im Dokument durchgeführt wurde.
public:
bool Undo();
public:
bool Undo();
bool Undo();
[System.Runtime.InteropServices.DispId(128)]
public bool Undo ();
[<System.Runtime.InteropServices.DispId(128)>]
abstract member Undo : unit -> bool
Public Function Undo () As Boolean
Gibt zurück
Ein boolescher Wert true , der angibt, ob die letzte Aktion rückgängig gemacht werden kann, false andernfalls.
- Attribute
Beispiele
public void CodeExample(DTE2 dte, AddIn addin)
{
try
{ // Before running, create two text files named "TextFile1.txt"
// and "TextFile2.txt", include them in your solution,
// and then open them. Notice changes when code executes.
Document doc, doc2;
string msg = "";
string msg2 = "";
if (dte.Documents.Count > 0)
{
doc = dte.Documents.Item("TextFile1.txt");
// Find specified text.
if (doc.MarkText("text to find", 0))
{
msg += "(1) The text was found!\n"; //MessageBox.Show("The text was found");
// Delete the bookmark created by MarkText.
doc.ClearBookmarks();
}
if (doc.ReplaceText("text to find", "was replaced by this", 0))
msg += "(2) It [was replaced by this].\n";
if (doc.Undo())
msg += "(3) The ReplaceText method has been undone.\n";
if (doc.Redo())
msg += "(4) The ReplaceText method had been redone.\n";
// This will bring the other document to the foreground.
doc2 = doc.Collection.Item("TextFile2.txt");
doc2.Activate();
// Have these documents been saved?
foreach (Document dc in dte.Documents)
{
if (dc.Saved) msg += dc.Name + " has been saved.\n";
}
MessageBox.Show(msg, "Example Output");
// Access the application object.
msg2 += doc2.DTE.Name + " is the application object.\n";
// Show the Guid for the document.
msg2 += doc2.Kind + " is the Guid for this document.\n";
// Show the language used to author the code.
msg2 += doc2.Language + " is the language used in this document.\n";
// Show the document's name.
msg2 += doc2.Name + " is the name of this document.\n";
// Get the projectitem associated with this document.
msg2 += doc2.ProjectItem.Name + " is the ProjectItem associated with this document.\n";
// Show the document type.
msg2 += doc2.Type + " is the type of document.\n";
foreach (Window win in doc2.Windows)
{
msg2 += win.Caption + " is a window.\n";
}
MessageBox.Show(msg2, "Example Output");
}
else MessageBox.Show("Sample not setup properly.");
}
catch(Exception ex)
{
MessageBox.Show(ex.Message);
}
}