Checkbox cell adds a checkbox to the cell, allowing users to toggle options.

To create a checkbox in a cell, use the CheckBoxCellType class in the GrapeCity.Wpf.SpreadSheet.CellType namespace. Use Content property to display text in a checkbox. Additionally, the TrueContent, FalseContent, and IndeterminateContent properties allows you to customize text based on the checkbox state. If you want to display all three states; checked, unchecked, and Indeterminate, set the IsThreeState property to True.

Similar to Button cells, checkbox cells support command execution, where clicking the checkbox triggers a command. For this functionality, use the properties of the CellCommandParameter class. The available properties are listed in the table below.  

Refer to the following example code to set data template with the IsThreeState property.

<Grid>
 <gss:GcSpreadSheet  x:Name ="spreadSheet1"  HorizontalAlignment ="Stretch"  VerticalAlignment ="Stretch"  >
     <gss:GcSpreadSheet.Sheets>
         <gss:SheetInfo  ColumnCount ="20"  RowCount ="50" >
             <gss:SheetInfo.Columns >
                 <gss:ColumnInfo  Width ="180">
                     <gss:ColumnInfo.CellType>
                         <CT:CheckBoxCellType IsThreeState ="True" FalseContent ="Reject" TrueContent ="Approval" IndeterminateContent ="Pending"/>
                     </gss:ColumnInfo.CellType >
                     </gss:ColumnInfo>
             </gss:SheetInfo.Columns>
         </gss:SheetInfo>
     </gss:GcSpreadSheet.Sheets>
 </gss:GcSpreadSheet>
</Grid>

// CheckBoxCellType.
CheckBoxCellType cb = new CheckBoxCellType();
cb.IsThreeState = true;
cb.IndeterminateContent = "Indeterminate";
cb.FalseContent = "Rejected";
cb.TrueContent = "Approved";
spreadSheet1.Workbook.ActiveSheet.Columns[0].CellType = cb;

' CheckBoxCellType.
Dim cb As CheckBoxCellType = New CheckBoxCellType()
cb.IsThreeState = True
cb.IndeterminateContent = "Indeterminate"
cb.FalseContent = "Rejected"
cb.TrueContent = "Approved"
spreadSheet1.Workbook.ActiveSheet.Columns(0).CellType = cb