WPF flexgrid Unbound templated Checkbox column

WPF flexgrid Unbound templated Checkbox column

Posted by: david on 16 March 2025, 8:15 am EST

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  david

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  Posted 16 March 2025, 8:15 am EST

  How to set the checkbox for the Unbound Column?

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  aastha.gupta

  

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  Posted 17 March 2025, 5:02 am EST

  Hi David,

  You can create checkboxes for the boolean columns, by implementing a custom CellFactory for the unbound FlexGrid control. Here is the code snippet for the same:

  public class CheckBoxCellFactory : GridCellFactory
  {
      FlexGrid grid;
      public CheckBoxCellFactory(FlexGrid fg)
      {
          grid = fg;
      }
      public override FrameworkElement CreateCellContent(GridCellType cellType, GridCellRange range, object cellContentType)
      {
          if (cellType == GridCellType.Cell && grid.Columns[range.Column].ColumnName == "Select")
          {
              CheckBox checkBox = new CheckBox
              {
                  Margin = new Thickness(5),
                  HorizontalAlignment = HorizontalAlignment.Center
              };
              // Set the checkbox state based on the grid's cell value
              object cellValue = grid[range.Row, range.Column];
              if (cellValue is bool isChecked)
              {
                  checkBox.IsChecked = isChecked;
              }
              // Handle CheckBox Click Event
              checkBox.Checked += (s, e) => grid[range.Row, range.Column] = true;
              checkBox.Unchecked += (s, e) => grid[range.Row, range.Column] = false;
              return checkBox;
          }
          return base.CreateCellContent(cellType, range, cellContentType);
      }
  }

  Kindly refer to the attached sample for full implementation. See CheckBoxCellDemo.zip

  Thanks & regards,
  
  Aastha

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  david

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  Posted 18 March 2025, 3:51 am EST

  Hi Aastha
  
  Thanks for your reply.
  
  I need to check/uncheck the checkboxes in code behind, not at creation.

  Thanks & regards
  
  David

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  aastha.gupta

  

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  Posted 19 March 2025, 2:22 am EST

  Hi David,

  You can fetch the Content of GridControlCellView returned via FlexGrid’s GetCellView() method. Here is the code snippet for the same:

  // You can initialize these variables based on your requirement
      int row = 2; 
      int col = 0;
      bool isChecked = true;
      // code to check/uncheck the cell's checkbox via code
      GridControlCellView cellView = flexGrid.GetCellView(new GridControlRange(row, col));
      if (cellView.Content is CheckBox chk) 
      {
          chk.IsChecked = isChecked;
      }

  Kindly refer to the attached sample for full implementation. See CheckBoxCellDemo_Mod.zip

  Thanks & regards,
  
  Aastha

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  david

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  Posted 6 August 2026, 5:39 am EST

  What is the difference between GridControlRange and GridCellRange.
  
  When I did flexGrid.GetCellView(new GridControlRange(0, col)) , it refers to columnheadecell instead of row 0 of the grid, there is no way to mention the celltype in case of GridControlRange

  David

• 

  kartik.dua

  

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  Posted 7 August 2026, 7:06 am EST

  Hi David,

  The GridControlRange represents a grid-level range, which includes all cells in the grid, including the headers. In contrast, GridCellRange represents a cell-level range and does not include the headers.

  Therefore:

  • new GridControlRange(0, 0) refers to the first column-header cell.
  • new GridCellRange(0, 0) refers to the first data cell.

  To simplify the range calculation on your end, you can create the GridControlRange object by manually accounting for the header row/column offsets using the following code:

  int row = 0;
  int col = 0;
  bool isChecked = true;
  
  var columnHeaderRowsCount = flexGrid.ColumnHeaders.VisibleRowsCount;
  var RowHeaderColumnsCount = flexGrid.RowHeaders.VisibleColumnsCount;
  
  row += columnHeaderRowsCount;
  col += RowHeaderColumnsCount;
  
  GridControlCellView cellView = flexGrid.GetCellView(new GridControlRange(row, col));
  if (cellView.Content is CheckBox chk)
  {
      chk.IsChecked = isChecked;
  }

  Best Regards,
  
  Kartik