Hi all



I have a confusion that weather user controls

can be added as a column of datagrid through datagrid TextBox Column

AS i made a user control but that is not added with its full functionalities in the datagrid.

means many properties are not working when i embed a user control inside datagrid Column.



Thanks in advance


Thanks & Regards
Hema Chaudhry

You can put any control into a datagrid template column. And technically you could programmatically insert any control into a non-template datagrid column by accessing the datagrid's items collection.

How are you trying to access your user control such that you beleive it is not working properly? Can you post a code sample of what you are trying to do?

-Peter

'This is My User Control Declaration

Private WithEvents MultiColumnComboBox1 As New MultiColumnComboBox.MultiColumnComboBox

'This Function Populate Datgrid with data

 Private Sub PopulateGrid()
  Me.DataGrid1.DataSource = dtbl

        If Not DataGrid1.TableStyles.Contains("tbBill") Then
            dgTblStyle = New DataGridTableStyle
            dgTblStyle.MappingName = dtbl.TableName
            Me.DataGrid1.TableStyles.Add(dgTblStyle)
            Me.dgTblStyle.RowHeadersVisible = False
            Me.dgTblStyle.AllowSorting = False
            Me.dgTblStyle.PreferredRowHeight = 22
            colStyle = Me.DataGrid1.TableStyles(0).GridColumnStyles
            colStyle(0).Width = 100
            colStyle(1).Width = 150
            colStyle(2).Width = 100
            colStyle(3).Width = 180
            colStyle(0).Alignment = HorizontalAlignment.Center
            colStyle(1).Alignment = HorizontalAlignment.Center
            colStyle(2).Alignment = HorizontalAlignment.Center
            colStyle(3).Alignment = HorizontalAlignment.Center
        End If

        datagridtextBox = CType(Me.DataGrid1.TableStyles(0).GridColumnStyles (1), DataGridTextBoxColumn)
'propeties to be set for MultiCOlumns ComboBox

    MultiColumnComboBox1.ColumnSize = "50,50"
        MultiColumnComboBox1.ColumnTitle = "EmpCode,EmpName"
        MultiColumnComboBox1.DataFieldList = "EmpCode"
        MultiColumnComboBox1.DataFieldToDisplay = "EmpName"         MultiColumnComboBox1.DataSource = Nothing
        MultiColumnComboBox1.Name = "MultiColumnComboBox1"
        MultiColumnComboBox1.AddItem("EmpCode0,EmpName0")
        MultiColumnComboBox1.AddItem("EmpCode1,EmpName1")
        MultiColumnComboBox1.AddItem("EmpCode2,EmpName2")         MultiColumnComboBox1.LoadData()
        MultiColumnComboBox1.Dock = DockStyle.Fill
End Sub

'AS we click on DatagRid COlumn 1 The MultiColumn ComboBox
'Should Populate & displayed

 Private Sub DataGrid1_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles DataGrid1.MouseDown
        Try
            hitTestGrid = Me.DataGrid1.HitTest(e.X, e.Y)

            If Not (hitTestGrid Is Nothing) Then
datagridtextBox.TextBox.Controls.Add(MultiColumnCo mboBox1)
                    MultiColumnComboBox1.Cursor = Cursors.Arrow

                    MultiColumnComboBox1.BringToFront()
                    MultiColumnComboBox1.Visible = True                     End If
            End If
        Catch ex As Exception
            MsgBox(ex.ToString)
        End Try
    End Sub

But When I m using this MultiCOlumn Combo Control on form
It works fine It shows proper Columns with data
But when I put it into my datagrid it will not work.

Conclusion may b:
User Controls can't be added inside datagridtextboxCOlumn

Plz reply me any link,direction,suggestion as its very urgent for me.

Thanks & Regards
Hema Chaudhry

The problem is that you have declared a single control on your form. However, the datagrid wants to draw more than one and will not map all of them to a single instance on the form. Therefore you need to execute the block of code that deals with the control for each item (row) in the datagrid. I do this all the time with the ASP.NET datagrid, but I have not worked with the WinForms datagrid so I can't provide much more than that.

Here's the MSDN help for the winforms datagrid class:

http://msdn.microsoft.com/library/en...ClassTopic.asp


-Peter

Really Thanks for the reply,

I have seen the link u suggested.
But I have already done that in code:
Adding Custom columns to datagrid.

 colStyle = Me.DataGrid1.TableStyles(0).GridColumnStyles
            colStyle(0).Width = 100
            colStyle(1).Width = 150
            colStyle(2).Width = 100
            colStyle(3).Width = 180
            colStyle(0).Alignment = HorizontalAlignment.Center
            colStyle(1).Alignment = HorizontalAlignment.Center
            colStyle(2).Alignment = HorizontalAlignment.Center
            colStyle(3).Alignment = HorizontalAlignment.Center
        End If

The problem is Dropdown list is displayed in the Datgrid Column
But there is no data inside Combobox Even that combo is not drop dwon

But when i try it on form then that combo will work fine (Display multi columns as well shows items at drop down)

But i m not able to get why is it not working inside datagrid text box column.???????????????

Thanks a lot
Plz Help?

Thanks & Regards
Hema Chaudhry

When you put the control on the form, there is only 1 instance of it. You have an explicit name for that control, and are therefore able to manipulate its properties.

When you put the control in a column of a grid it will need to exist multiple times, once for each row in the grid. Therefore you can NOT reference it with an explicit name and thus you can not manipulate its properties by a name. You'll need to find some way to get at the cell where the control lives for EACH row in the grid so you can manipulate each control separately.

-Peter

Hi Hemachaudhry,
I also want to create a multicolumncomboxbo but I can't.

You write:
"Private WithEvents MultiColumnComboBox1 As New MultiColumnComboBox.MultiColumnComboBox "

I'm using vb.net2005.
How can I declare a MultiColumnComboBox?
Thanks in advance.