Is there a way to group or temporarily disable the undo history for a RichTextBox?

Question

I\'m currently wrestling with Tables inside RichTextBoxs in WPF. In WPF, tables don\'t have rows and columns, they just have rows, each having a certain number of cells. When a

Answer 1

If you want to group undo actions (rather than disable undo entirely), you can group a set of programmatic changes via TextBoxBase.BeginChange() then, after making the changes, TextBoxBase.EndChange(), i.e.:

        richTextBox.BeginChange();
        try
        {
            // Add column

            // For each row, add a cell to the column.
        }
        finally
        {
            richTextBox.EndChange();
        }

Or, equivalently, you can call TextBoxBase.DeclareChangeBlock() inside a using statement:

        using (richTextBox.DeclareChangeBlock())
        {
            // Add column

            // For each row, add a cell to the column.
        }