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How to add unbound CheckBox column at run time in WinForms GridGroupingControl?

Platform: WinForms |
Control: GridGroupingControl |
Published Date: April 18, 2016 |
Last Revised Date: December 23, 2019
Tags: checkbox

Unbound column

To add an Unbound column in the grid, TableDescriptor. UnboundFields collection can be used and the CheckBox cell type can be assigned in the following way,

C#

this.gridGroupingControl1.TableDescriptor.UnboundFields.Add("print");  this.gridGroupingControl1.TableDescriptor.Columns["print"].Appearance.AnyRecordFieldCel.CellType = "CheckBox";

 

VB

Me.gridGroupingControl1.TableDescriptor.UnboundFields.Add("print")
Me.gridGroupingControl1.TableDescriptor.Columns("print").Appearance.AnyRecordFieldCel.CellType = "CheckBox"

 

The values of that Unbound field can be maintained through QueryValue and SaveValue events. An internal collection will be handled for displaying and updating the values.

C#

this.gridGroupingControl1.TableDescriptor.QueryValue += new FieldValueEventHandler(unboundField_QueryValue);
private void unboundField_QueryValue(object sender, FieldValueEventArgs e)
{
    if (e.Field.Name == "print" && checkboxvalues.Contains(e.Record.Id))
    {
        e.Value = (bool)checkboxvalues[e.Record.Id];
    }
}

 

VB

Private Me.gridGroupingControl1.TableDescriptor.QueryValue += New FieldValueEventHandler(AddressOf unboundField_QueryValue)
Private Sub unboundField_QueryValue(ByVal sender As Object, ByVal e As FieldValueEventArgs)
    If e.Field.Name = "print" AndAlso checkboxvalues.Contains(e.Record.Id) Then
        e.Value = CBool(checkboxvalues(e.Record.Id))
    End If
End Sub

 

C#

this.gridGroupingControl1.TableDescriptor.SaveValue += new FieldValueEventHandler(unboundField_SaveValue);
private void unboundField_SaveValue(object sender, FieldValueEventArgs e)
{
    if (e.Field.Name == "print" && checkboxvalues.Contains(e.Record.Id))
    {
       checkboxvalues[e.Record.Id] = bool.Parse(e.Value.ToString());
    }
}

 

VB

Private Me.gridGroupingControl1.TableDescriptor.SaveValue += New FieldValueEventHandler(AddressOf unboundField_SaveValue)
Private Sub unboundField_SaveValue(ByVal sender As Object, ByVal e As FieldValueEventArgs)
    If e.Field.Name = "print" AndAlso checkboxvalues.Contains(e.Record.Id) Then
       checkboxvalues(e.Record.Id) = Boolean.Parse(e.Value.ToString())
    End If
End Sub

 

Screenshot

Shows unbound checkbox column

 

Samples:

C# : CheckBox column at run time

VB : CheckBox column at run time

Reference link: https://help.syncfusion.com/windowsforms/classic/gridgroupingcontrol/managing-records-and-columns#unbound-columns

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Comments
Truong
Feb 17, 2020

Hi! Can i ask something about unbound field , please!

I have one CheckBox cell type with UnboundFields collection and i use GridExcelFilter too.

The problem is when i click at checkbox , the Record is not update value immediately, so that event SaveValue is not raised. This problem make the GridExcelFilter.RecordFiltersItemChanged can not raise too. But when i click at checkbox then click on another cell , the Record update immediately , and everything is ok. So there's a little annoyance with having to click on another cell so that the record can be updated before using GridExcelFilter.

Thank you for helping me. Best Regard

Reply

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