.NET Framework 4.5.2+
.NET Framework 4.5.2+
.NET Standard 2.0+

RichEditDocumentServer.BeginUpdate() Method

Locks the RichEditDocumentServer object until the RichEditDocumentServer.EndUpdate method is called.

Namespace: DevExpress.XtraRichEdit

Assembly: DevExpress.RichEdit.v21.2.Core.dll

Declaration

public void BeginUpdate()

Remarks

Enclose your code in the BeginUpdate - EndUpdate() method calls to improve performance when you apply multiple modifications to a document.

Each call to BeginUpdate must be paired with the EndUpdate() call. You can use the try…finally statement to ensure that EndUpdate() is always called even if an exception occurs.

The following example shows how to use the BeginUpdate - EndUpdate() methods.

// Create a new RichEditDocumentServer instance.
RichEditDocumentServer richEditDocumentServer = new RichEditDocumentServer();

richEditDocumentServer.BeginUpdate();
try
{
    // Create a multiplication table.
    Table table = richEditDocumentServer.Document.Tables.Create(richEditDocumentServer.Document.Selection.Start, 8, 8, AutoFitBehaviorType.AutoFitToWindow);

    table.Borders.InsideHorizontalBorder.LineThickness = 1;
    table.Borders.InsideHorizontalBorder.LineStyle = TableBorderLineStyle.Double;
    table.Borders.InsideVerticalBorder.LineThickness = 1;
    table.Borders.InsideVerticalBorder.LineStyle = TableBorderLineStyle.Double;
    table.TableAlignment = TableRowAlignment.Center;

    table.ForEachCell((cell, rowIndex, columnIndex) =>
    {
        richEditDocumentServer.Document.InsertText(cell.Range.Start, String.Format("{0}*{1} = {2}",
             columnIndex + 2, rowIndex + 2, (rowIndex + 2) * (columnIndex + 2)));
    });

}
finally
{
    richEditDocumentServer.EndUpdate();
}
See Also