Spread Windows Forms 13.0 Product Documentation
Spread Windows Forms 13.0 Product Documentation / Developer's Guide / Customizing Interaction in Cells / Using Validation in Cells / Using a Surrogate Character Validator
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    Using a Surrogate Character Validator
    In This Topic

    You can create a validator that checks if surrogate characters have been entered in the cell

    A validation error occurs if the value is not valid. 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 SurrogateCharValidator 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.

    Using Code

    The following example uses the surrogate character validator.

    CS
    Copy Code
    FarPoint.Win.Spread.CellStyleNotify cnotify = new FarPoint.Win.Spread.CellStyleNotify();
    cnotify.InvalidCellStyle.BackColor = Color.Aqua;
    FarPoint.Win.Spread.SurrogateCharValidator surchar = new FarPoint.Win.Spread.SurrogateCharValidator();
    surchar.Actions.Add(cnotify);
    fpSpread1.Sheets[0].AddValidators(new FarPoint.Win.Spread.Model.CellRange(1, 1, 1, 1), surchar);
    fpSpread1.Sheets[0].Cells[1, 1].Value = "In the game of mahjong \U0001F01C denotes the Four of circles";
    VB
    Copy Code
    Dim cnotify As New FarPoint.Win.Spread.CellStyleNotify()
    cnotify.InvalidCellStyle.BackColor = Color.Aqua
    Dim surchar As New FarPoint.Win.Spread.SurrogateCharValidator()
    surchar.Actions.Add(cnotify)
    fpSpread1.Sheets(0).AddValidators(New FarPoint.Win.Spread.Model.CellRange(1, 1, 1, 1), surchar)
    fpSpread1.Sheets(0).Cells(1, 1).Text = "In the game of mahjong" + Char.ConvertFromUtf32(&H1F01C) + "denotes the Four Of circles"