C1CheckBoxField Using C1GridView 2025v2 399

C1CheckBoxField Using C1GridView 2025v2 399

Posted by: enrique.pv-ext on 19 February 2026, 8:03 am EST

• 

  enrique.pv-ext

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  Posted 19 February 2026, 8:03 am EST - Updated 19 February 2026, 8:41 am EST

  Hi,

  Migrate from 2010v1 to 2025v2 399 in ASP.NET WebForms NET Framework 4.8.1.

  Using C1GridView from C1.Web.Wijmo.Controls.48.dll

  Using C1CheckBoxField column:

  Old version 2010v1
  
  

  

  1093×372 66.4 KB

  New version 2025v2 399

  

  1784×434 45.7 KB

  In 2025v2 399 version, it’s not appears Checkbox Column!
  
  Create columns dynamically using code, not markup

                  <cc1:C1GridView ID="C1GridView1" Width="100%"
                      runat="server"
                      AllowPaging="True" PageSize="30"
                      AllowSorting="True" ShowFilter="True"
                      AutogenerateColumns="False"
                      OnPageIndexChanging="C1GridView1_PageIndexChanging"
                      OnSorting="C1GridView1_Sorting"
                      OnSorted="C1GridView1_Sorted"
                      OnFiltering="C1GridView1_Filtering"
                      OnRowCreated="C1GridView1_RowCreated"
                      OnRowDataBound="C1GridView1_RowDataBound">
                      <Columns>
                      </Columns>
                  </cc1:C1GridView>

  In ConfigureGridColumns method:

  case ColumnsC1GridView1.SELECTION:
                              var check = new C1CheckBoxField();
                              check.AllowSizing = false;
                              check.ShowFilter = false;
                              check.ReadOnly = false;
                              check.ItemStyle.Width = 10;
                              this.C1GridView1.Columns.Add(check);
                              break;
  
                          case ColumnsC1GridView1.DEBT_PAYMENT:
                              col = new C1ButtonField();
                              col.AllowSizing = false;
                              col.CommandName = "DEBT_PAYMENT";
                              col.ButtonType = ButtonType.Image;
                              col.ImageUrl = "~/App_Themes/Content/Imagenes/editing.gif";
                              col.ItemStyle.Width = 10;
                              this.C1GridView1.Columns.Add(col);
                              break;

  RowCreated event, create CheckBox for Header

     protected void C1GridView1_RowCreated(object sender, C1GridViewRowEventArgs e)
     {
         Logger.Debug("C1GridView1_RowCreated");
         try
         {
             if (e.Row.RowType == C1GridViewRowType.Header ) //&& this._textsShown != null)
             {
                 var textos = this._textsShown;
  
                 var check = new CheckBox();
                 check.ID = "selectionHeader";
                 check.Attributes["onclick"] = "CheckAll(this);";
                 check.Checked = AllSelected;
                 e.Row.Cells[(int)ColumnsC1GridView1.SELECTION].Controls.Add(check);
  
                 e.Row.Cells[(int)ColumnsC1GridView1.BAG_DEBT].ToolTip = (string)this._textsShown[4];
                 e.Row.Cells[(int)ColumnsC1GridView1.OPERATOR].ToolTip = (string)this._textsShown[3];
             }

  any suggestions for use C1CheckBoxField in GridView ?
  
  thx a lot

• 

  uttkarsh.matiyal

  

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  Posted 20 February 2026, 9:09 am EST

  Hello Enrique,

  We’re investigating the behavior and will update you once we have more information.

  Regards,
  
  Uttkarsh.

• 

  uttkarsh.matiyal

  

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  Posted 23 February 2026, 4:56 am EST

  Hello Enrique,

  Please refer to the attached sample for CheckBox column implementation on server-side and let us know if you face any issues.

  Sample: GridView_Checkbox.zip

  Regards,
  
  Uttkarsh.

• 

  enrique.pv-ext

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  Posted 11 March 2026, 11:32 am EST - Updated 11 March 2026, 12:07 pm EST

  Thanks at all.

  I try your sample. I can check all, but not uncheck all:
  
  

  

  2099×1006 139 KB

  anyways, I get error filtering:
  
  ‘C1GridView1’: the Filtering event was not handled.

• 

  uttkarsh.matiyal

  

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  Posted 12 March 2026, 6:02 am EST

  Hello Enrique,

  We provided you a method to implement your scenario. If you want a different functionality of button click, you can modify the method accordingly.

  For example, if you want the following behavior:

  • If any checkbox is unchecked → check all
  • If all are checked → uncheck all

  Then, you can modify the CheckAll_Click() method in HeaderButtonTemplate class as follows:

  private void CheckAll_Click(object sender, ImageClickEventArgs e)
  {
      var btn = (ImageButton)sender;
      var grid = (C1GridView)btn.NamingContainer.NamingContainer;
  
      bool allChecked = true;
  
      // Step 1: Check if ALL checkboxes are checked
      foreach (C1GridViewRow row in grid.Rows)
      {
          var cb = (CheckBox)row.FindControl("chk");
          if (cb != null && !cb.Checked)
          {
              allChecked = false;
              break;
          }
      }
  
      // Step 2: Toggle state
      bool newState = !allChecked;
  
      foreach (C1GridViewRow row in grid.Rows)
      {
          var cb = (CheckBox)row.FindControl("chk");
          if (cb != null)
              cb.Checked = newState;
      }
  }

  Please let us know if you have further queries.

  Regards,
  
  Uttkarsh.