windowsforms-devexpress-dot-xtraspreadsheet-dot-spreadsheetcontrol-e6e3ba57.md
Unlocks the SpreadsheetControl object after a call to the SpreadsheetControl.BeginUpdate method and causes an immediate visual update.
Namespace : DevExpress.XtraSpreadsheet
Assembly : DevExpress.XtraSpreadsheet.v25.2.dll
NuGet Package : DevExpress.Win.Spreadsheet
public void EndUpdate()
Public Sub
Enclose your code in the SpreadsheetControl.BeginUpdate - EndUpdate method calls to suppress the SpreadsheetControl’s visual updates and improve its performance when you perform multiple changes to a spreadsheet document.
Each call to SpreadsheetControl.BeginUpdate must be paired with the EndUpdate call. The SpreadsheetControl.BeginUpdate method locks the SpreadsheetControl, 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 SpreadsheetControl.BeginUpdate - EndUpdate methods.
spreadsheetControl1.BeginUpdate();
try
{
Worksheet worksheet = spreadsheetControl1.Document.Worksheets[0];
spreadsheetControl1.Unit = DevExpress.Office.DocumentUnit.Point;
// Create a multiplication table.
worksheet.Cells["A1"].Value = "*";
for(int i = 1; i < 11; i++)
{
// Create a header column.
worksheet.Columns["A"][i].Value = i;
// Create a header row.
worksheet.Rows["1"][i].Value = i;
}
// Multiply values of header cells.
worksheet.Range["B2:K11"].Formula = "=B$1*$A2";
// Obtain the data range.
CellRange tableRange = worksheet.GetDataRange();
// Specify the row height and column width.
tableRange.RowHeight = 40;
tableRange.ColumnWidth = 40;
// Align the table content.
tableRange.Alignment.Horizontal = SpreadsheetHorizontalAlignment.Center;
tableRange.Alignment.Vertical = SpreadsheetVerticalAlignment.Center;
// Fill the header cells.
CellRange headerCells = worksheet.Range.Union(worksheet.Range["A1:K1"], worksheet.Range["A2:A11"]);
headerCells.FillColor = Color.FromArgb(0xf7, 0x9b, 0x77);
headerCells.Font.Bold = true;
// Fill cells that contain multiplication results.
worksheet.Range["B2:K11"].FillColor = Color.FromArgb(0xfe, 0xf2, 0xe4);
}
finally
{
spreadsheetControl1.EndUpdate();
}
spreadsheetControl1.BeginUpdate()
Try
Dim worksheet As Worksheet = spreadsheetControl1.Document.Worksheets(0)
spreadsheetControl1.Unit = DevExpress.Office.DocumentUnit.Point
' Create a multiplication table.
worksheet.Cells("A1").Value = "*"
For i As Integer = 1 To 10
' Create a header column.
worksheet.Columns("A")(i).Value = i
' Create a header row.
worksheet.Rows("1")(i).Value = i
Next i
' Multiply values of header cells.
worksheet.Range("B2:K11").Formula = "=B$1*$A2"
' Obtain the data range.
Dim tableRange As CellRange = worksheet.GetDataRange()
' Specify the row height and column width.
tableRange.RowHeight = 40
tableRange.ColumnWidth = 40
' Align the table content.
tableRange.Alignment.Horizontal = SpreadsheetHorizontalAlignment.Center
tableRange.Alignment.Vertical = SpreadsheetVerticalAlignment.Center
' Fill the header cells.
Dim headerCells As CellRange = worksheet.Range.Union(worksheet.Range("A1:K1"), worksheet.Range("A2:A11"))
headerCells.FillColor = Color.FromArgb(&Hf7, &H9b, &H77)
headerCells.Font.Bold = True
' Fill cells that contain multiplication results.
worksheet.Range("B2:K11").FillColor = Color.FromArgb(&Hfe, &Hf2, &He4)
Finally
spreadsheetControl1.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-spreadsheet-import-data-from-a-datatable-instance/CS/Form1.cs#L28
activeWorksheet.Import(ManualDataSet.CreateData().Tables[0], true, selection.TopRowIndex, selection.LeftColumnIndex);
spreadsheetControl1.EndUpdate();
}
winforms-spreadsheet-use-custom-cell-editors/CS/DevAVInvoicing/Form1.cs#L193
finally {
spreadsheetControl1.EndUpdate();
}
winforms-spreadsheet-chart-api/CS/SpreadsheetChartAPISamples/Form1.cs#L122
codeEditor.AfterCompile(args.Result);
spreadsheet.EndUpdate();
}
winforms-spreadsheet-pivot-table-api/CS/SpreadsheetPivotTableExamples/Form1.cs#L110
codeEditor.AfterCompile(args.Result);
spreadsheet.EndUpdate();
}
Finally
_control?.EndUpdate()
End Try
winforms-spreadsheet-import-data-from-a-datatable-instance/VB/Form1.vb#L31
activeWorksheet.Import(ManualDataSet.CreateData().Tables(0), True, selection.TopRowIndex, selection.LeftColumnIndex)
spreadsheetControl1.EndUpdate()
End Sub
winforms-spreadsheet-use-custom-cell-editors/VB/DevAVInvoicing/Form1.vb#L179
Finally
spreadsheetControl1.EndUpdate()
End Try
winforms-spreadsheet-chart-api/VB/SpreadsheetChartAPISamples/Form1.vb#L119
codeEditor.AfterCompile(args.Result)
spreadsheet.EndUpdate()
End Sub
winforms-spreadsheet-pivot-table-api/VB/SpreadsheetPivotTableExamples/Form1.vb#L105
codeEditor.AfterCompile(args.Result)
spreadsheet.EndUpdate()
End Sub
See Also