You can use LineNotify to notify the user of a validation error by underlining the value entered. The underline is drawn for each cell, so it might not match the string of the cell. You can also change the color of the underline. LineNotify is not affected by the GcMultiRow.ShowWaveLineInEditingStatus property.

Using Designer

Complete the following steps to use LineNotify for cell validation.

1. Select a cell for which to validate the value (for example, textBoxCell1).
2. From the Properties window, select the Validators property and click the ... button.
3. From the displayed CellValidator collection editor, select RequiredFieldValidator from the top-left combo box and click the Add button.
4. Select the Actions property from the property grid at the right of the screen and click the ... button.
5. Add LineNotify in the displayed CellValidateAction collection editor.
6. Click the OK button and close the CellValidateAction collection editor.
7. Click the OK button and close the CellValidator collection editor.
8. Change the document window tab of the designer to Runtime.
9. Move to the next cell without making any changes in the selected cell and you can confirm that the validation error is shown.

Using Code

The following code displays an underline as the validation error when the value in textBoxCell is blank.

[VB]

Imports GrapeCity.Win.MultiRow

Dim textBoxCell1 As New TextBoxCell()
Dim requiredFieldValidator1 As New RequiredFieldValidator()
requiredFieldValidator1.Actions.Add(New LineNotify())
textBoxCell1.Validators.Add(requiredFieldValidator1)

Dim cells As Cell() = {textBoxCell1}
GcMultiRow1.Template = Template.CreateGridTemplate(cells)
GcMultiRow1.RowCount = 10

[CS]

using GrapeCity.Win.MultiRow;

TextBoxCell textBoxCell1 = new TextBoxCell();
RequiredFieldValidator requiredFieldValidator1 = new RequiredFieldValidator();
requiredFieldValidator1.Actions.Add(new LineNotify());
textBoxCell1.Validators.Add(requiredFieldValidator1);

Cell[] cells = { textBoxCell1 };
gcMultiRow1.Template = Template.CreateGridTemplate(cells);
gcMultiRow1.RowCount = 10;

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