windowsforms-devexpress-dot-xtrarichedit-dot-richeditcontrol-91b1a37b.md
Unlocks the RichEditControl object after a call to the RichEditControl.BeginUpdate method and causes an immediate visual update.
Namespace : DevExpress.XtraRichEdit
Assembly : DevExpress.XtraRichEdit.v25.2.dll
NuGet Package : DevExpress.Win.RichEdit
public void EndUpdate()
Public Sub
Enclose your code in the RichEditControl.BeginUpdate - EndUpdate method calls to suppress the RichEditControl’s visual updates and improve its performance when you perform multiple changes to a document.
Each call to RichEditControl.BeginUpdate must be paired with the EndUpdate call. The RichEditControl.BeginUpdate method locks the RichEditControl, so that it is not rendered after each modification. The EndUpdate method unlocks the control to enable all the changes to take effect. 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 RichEditControl.BeginUpdate - EndUpdate methods.
richEditControl1.BeginUpdate();
try
{
Document document = richEditControl1.Document;
// Create a multiplication table.
Table table = document.Tables.Create(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) =>
{
document.InsertText(cell.Range.Start, String.Format("{0}*{1} = {2}",
columnIndex + 2, rowIndex + 2, (rowIndex + 2) * (columnIndex + 2)));
});
}
finally
{
richEditControl1.EndUpdate();
}
richEditControl1.BeginUpdate()
Try
Dim document As Document = richEditControl1.Document
' Create a multiplication table.
Dim table As Table = document.Tables.Create(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(Sub(cell, rowIndex, columnIndex) document.InsertText(cell.Range.Start, String.Format("{0}*{1} = {2}", columnIndex + 2, rowIndex + 2, (rowIndex + 2) * (columnIndex + 2))))
Finally
richEditControl1.EndUpdate()
End Try
The following code snippets (auto-collected from DevExpress Examples) contain references to the EndUpdate() method.
Note
The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.
winforms-rich-edit-implement-ms-office-word-format-painter/CS/DXApplication9/Form1.cs#L123
targetSelectedRange.EndUpdateDocument(targetSubDocument);
richEditControl.EndUpdate();
}
winforms-spreadsheet-how-to-edit-rich-text/VB/SpreadsheetRichText/RichTextEditForm.vb#L48
End If
RichEditControl1.EndUpdate()
End Sub
winforms-rich-edit-implement-ms-office-word-format-painter/VB/DXApplication9/Form1.vb#L112
targetSelectedRange.EndUpdateDocument(targetSubDocument)
richEditControl.EndUpdate()
End Sub
See Also