Spread Windows Forms 15.0
Spread Windows Forms 15.0 Product Documentation / Developer's Guide / Customizing Interaction in Cells / Using Validation / Using Validation in Cells / Using a String Comparison Validator
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    Using a String Comparison Validator
    In This Topic

    You can create a validator that compares string values.

    A validation error occurs if the value does not match the specified conditions. You can also create an action, such as displaying an icon in the cell, that lets the user know the value is invalid.

    Use the CompareStringValidator class to create the string validator. Specify a notification type such as IconNotify. Then use the AddValidators method to add the validator to a cell range.

    The following image displays an error icon with a text tip.

    String Comparision Validator

    Using Code

    The following example displays an icon if you type a string that does not contain "Test".

    Copy Code
    //Type a value in cell 1,1
    FarPoint.Win.Spread.IconNotify iconn = new FarPoint.Win.Spread.IconNotify();
    iconn.Icon = new System.Drawing.Icon("C:\\Program Files (x86)\\GrapeCity\\spread.ico");
    iconn.IconAlignment = ContentAlignment.MiddleCenter;
    iconn.IconTip = "Must contain Test";
    FarPoint.Win.Spread.CompareStringValidator svalid = new FarPoint.Win.Spread.CompareStringValidator();
    svalid.ComparedOperator = FarPoint.Win.Spread.CompareStringValidatorOperator.Contains;
    svalid.ComparedString = "Test";
    fpSpread1.Sheets[0].AddValidators(new FarPoint.Win.Spread.Model.CellRange(1, 1, 1, 1), svalid);
    fpSpread1.Sheets[0].Columns[1].Width = 140;
    fpSpread1.Sheets[0].Rows[1].Height = 50;    
    Copy Code
    'Type a value in cell 1,1
    Dim iconn As New FarPoint.Win.Spread.IconNotify()
    iconn.Icon = New System.Drawing.Icon("C:\Program Files (x86)\GrapeCity\spread.ico")
    iconn.IconAlignment = ContentAlignment.MiddleCenter
    iconn.IconTip = "Must contain Test"
    Dim svalid As New FarPoint.Win.Spread.CompareStringValidator()
    svalid.ComparedOperator = FarPoint.Win.Spread.CompareStringValidatorOperator.Contains
    svalid.ComparedString = "Test"
    fpSpread1.Sheets(0).AddValidators(New FarPoint.Win.Spread.Model.CellRange(1, 1, 1, 1), svalid)
    fpSpread1.Sheets(0).Columns(1).Width = 140
    fpSpread1.Sheets(0).Rows(1).Height = 50
    See Also