DataValidation.ShowErrorMessage Property
Gets or sets whether to display the error alert when the user input is not valid.
Namespace: DevExpress.Spreadsheet
Assembly: DevExpress.Spreadsheet.v20.2.Core.dll
NuGet Package: DevExpress.Spreadsheet.Core
NuGet Packages: DevExpress.Spreadsheet.Core, DevExpress.WindowsDesktop.Spreadsheet.Core
Declaration
Property Value
| Type | Description |
|---|---|
| Boolean | true, to display the alert message if the value is not valid; otherwise, false. |
Example
The following code snippet adds a new data validation rule and customizes the error dialog invoked when validation fails for the user’s input.
The customized dialog is shown in the image below.
workbook.LoadDocument("Documents\\DataValidation.xlsx");
Worksheet worksheet = workbook.Worksheets[0];
// Restrict data entry to a 5-digit number.
DataValidation validation = worksheet.DataValidations.Add(worksheet["B4:B11"], DataValidationType.Custom, "=AND(ISNUMBER(B4),LEN(B4)=5)");
// Show error message.
validation.ErrorTitle = "Wrong Employee Id";
validation.ErrorMessage = "The value you entered is not valid. Use 5-digit number for the employee ID.";
validation.ErrorStyle = DataValidationErrorStyle.Information;
validation.ShowErrorMessage = true;
// Highlight data validation ranges.
int[] MyColorScheme = new int[] { 0xFFC4C4, 0xFFD9D9, 0xFFF6F6, 0xFFECEC, 0xE9D3D3 };
for (int i = 0; i < worksheet.DataValidations.Count; i++)
{
worksheet.DataValidations[i].Range.FillColor = Color.FromArgb(MyColorScheme[i]);
}
Related GitHub Examples
The following code snippets (auto-collected from DevExpress Examples) contain references to the ShowErrorMessage property.
Note
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