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how to modify the existing column type which is loaded from Datasets(through SQLDataAdapter)

  Public constring As String = AlgoMdConnectionString       
            Using con As New SqlConnection(constring)
                Using cmd As New SqlCommand("SELECT
TAP_BillDate AS [Bill Date],
'False' AS [isClosed],
TAP_Payable AS [Balance],
'' AS [Payment]
from Tbl_AccPending 
", con)
                    cmd.CommandType = CommandType.Text
                    Using sda As New SqlDataAdapter(cmd)
                        Using ds As New DataSet()
                               SfDataGrid1.DataSource = ds.Tables(0)
                                'SfDataGrid1.Columns.Add(New GridCheckBoxColumn() With {.MappingName = "isClosed", .HeaderText = "isClosed", .CheckBoxSize = New Size(15, 15), .TrueValue = "True", .FalseValue = "False"})

                        End Using
                    End Using
                End Using
            End Using
        Catch ex As Exception
            IO.File.AppendAllText(appDataPath & "\Log.txt", String.Format("{0}{1}", Environment.NewLine, ex.ToString()))
       End Try

on the above SQL Commands i have to modify 'isClosed' column as CheckBoxColumn .. i try SfDataGrid1.Columns.Add(New GridCheckBoxColumn() , but it creating new checkbox column at the end of all columns.. But i needs to modify the existing column loads from dataset at its same position.. if u have any other way to solve this, please let me know..


1 Reply

FP Farjana Parveen Ayubb Syncfusion Team January 20, 2020 09:01 AM UTC

Hi Sulthan, 
Thank you for using Syncfusion controls. 
You can modify the existing column type in SfDataGrid.AutoGeneratingColumns event. Please refer the below code example, 
AddHandler sfDataGrid.AutoGeneratingColumn, AddressOf SfDataGrid_AutoGeneratingColumn 
sfDataGrid.DataSource = employeeCollection 
Private Sub SfDataGrid_AutoGeneratingColumn(ByVal sender As Object, ByVal e As AutoGeneratingColumnArgs) 
       If e.Column.MappingName = "IsClosed" Then 
              e.Column = New GridCheckBoxColumn() With {.MappingName = "IsClosed", .HeaderText = "Is Closed"} 
       End If 
End Sub 
Please let us know if you need any further details on this. 
Farjana Parveen A

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