You can create a validator that has a list of invalid values. An error occurs if the user types a value from the candidate list.
You can also create an action, such as adding a backcolor to the cell, that lets the user know the value is invalid.
Use the ExcludeListValidator class to create the validator. Specify a notification type such as CellStyleNotify. Then use the AddValidators method to add the validator to a cell range.
The following image displays a cell with an invalid value.
Using Code
The following example displays an invalid backcolor if you type an item from the list.
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| //Type one of the candidate items in cell 1,1 to see the error notification FarPoint.Win.Spread.CellStyleNotify cnotify = new FarPoint.Win.Spread.CellStyleNotify(); cnotify.InvalidCellStyle.BackColor = Color.Bisque; FarPoint.Win.Spread.ExcludeListValidator excludelist = new FarPoint.Win.Spread.ExcludeListValidator(); excludelist.Candidates = new string[] { "Bird", "Deer", "Squirrel", "Lizard" }; excludelist.Actions.Add(cnotify); fpSpread1.Sheets[0].AddValidators(new FarPoint.Win.Spread.Model.CellRange(1, 1, 1, 1), excludelist); |
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| 'Type one of the candidate items in cell 1,1 to see the error notification Dim cnotify As New FarPoint.Win.Spread.CellStyleNotify() cnotify.InvalidCellStyle.BackColor = Color.Bisque Dim excludelist As New FarPoint.Win.Spread.ExcludeListValidator() excludelist.Candidates = New String() {"Bird", "Deer", "Squirrel", "Lizard"} excludelist.Actions.Add(cnotify) fpSpread1.Sheets(0).AddValidators(New FarPoint.Win.Spread.Model.CellRange(1, 1, 1, 1), excludelist) |
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