Upgrade to Q3 2010 : CellFormatting problem

[Fred]

Hello,

I have upgraded Telerik for Winforms to version Q3 2010 (version 2010.3.10.1109) .
In the _CellFormatting-event I add a RadComboBoxElement to a cell.
Since new version the event behaves strange or different.
e.CellElement.RowIndex is always -1 ?

void gridPositionen_CellFormatting(object sender, CellFormattingEventArgs e)

{


       if (e.CellElement.ColumnInfo is GridViewDataColumn && ((GridViewDataColumn)e.CellElement.ColumnInfo).Name == "Me_Dropdown")

       {

       

          if (e.CellElement.Children.Count > 0 || e.CellElement.RowIndex<0)//the comboxbox is already added to cell                        

          return;

 

                    

//NEVER GETS HERE !!!!  e.CellElement.RowIndex is always -1

 

 

                    RadComboBoxElement element = new RadComboBoxElement();

                    e.CellElement.Children.Add(element);

....

How do I get the RowIndex in the CellFormatting-event ? Or is there a new way to add a RadComboBoxElement to a cell ?

[Richard Slade]

Hi,

Yes, you can get the RowIndex

private void radGridView1_CellFormatting(object sender, CellFormattingEventArgs e)
{
    if (e.CellElement.RowIndex > -1)
    {
        MessageBox.Show(e.CellElement.RowIndex.ToString());
    }
}

Have a look at Emanuel's answer here which has a combobox column in the code.

Hope that helps but let me know if oyu have further questions
Richard

[Fred]

Thx !

[Richard Slade]

No problem. Please remember to mark as answer if this has helped.
Thanks
Richard

[Fred]

Ok I will Richard, but I have found the problem or bug. See following exemple :

public testform()
       {
           InitializeComponent();
           radGridView1.CellFormatting += new Telerik.WinControls.UI.CellFormattingEventHandler(radGridView1_CellFormatting);

           radGridView1.BeginUpdate();
           radGridView1.Columns.Add("ID", "ID");
           radGridView1.Columns.Add("NAME", "NAME");
           radGridView1.Rows.Add(1, "John");
           radGridView1.Rows.Add(2, "Bill");
           radGridView1.Rows.Add(3, "Ronald");
           radGridView1.EndUpdate();
       }

       void radGridView1_CellFormatting(object sender, Telerik.WinControls.UI.CellFormattingEventArgs e)
       {
           int i = e.CellElement.RowIndex;
       }

in this exemplee.CellElement.RowIndex is always -1

if I remove radGridView1.BeginUpdate(); and radGridView1.EndUpdate(); from the code then
e.CellElement.RowIndex is not always -1.

A bug ?

[Richard Slade]

Hello,

Another way to get the RowIndex as it appears that it is always -1 when you wrap with BeginUpdate / EndUpdate is in the following way (inside CellFormatting event)

Dim index As Integer = Me.RadGridView1.Rows.IndexOf(e.CellElement.RowInfo)
MessageBox.Show(index.ToString())

hope this helps
Richard

[Fred]

RowInfo is also empty . Your function also returns -1.

[Richard Slade]

Hello Fred,

Whilst e.CellElement.RowIndex is always -1 when wrapped in a BeginUpdate / EndUpdate, the above code always returns the correct index for me. (-1 will be returned for header rows)
Please can you try this sampple in a new project. It's just a RadGridView on a form.

Thanks

Public Class Form1

    Public Sub New()
        InitializeComponent()
    End Sub

    Private Sub Form1_Load(ByVal sender As System.Object, _
        ByVal e As System.EventArgs) Handles MyBase.Load

        RadGridView1.BeginUpdate()
        RadGridView1.Columns.Add("ID", "ID")
        RadGridView1.Columns.Add("NAME", "NAME")
        RadGridView1.Rows.Add(1, "John")
        RadGridView1.Rows.Add(2, "Bill")
        RadGridView1.Rows.Add(3, "Ronald")
        RadGridView1.EndUpdate(True)

    End Sub

    Private Sub RadGridView1_CellFormatting(ByVal sender As System.Object, _
        ByVal e As Telerik.WinControls.UI.CellFormattingEventArgs) Handles RadGridView1.CellFormatting


        Dim index As Integer = Me.RadGridView1.Rows.IndexOf(e.CellElement.RowInfo)
        If index > -1 Then
            MessageBox.Show(index.ToString())
        End If
    End Sub

End Class

Richard

[Fred]

Ok, this works, thanks for your time !

[Richard Slade]

You're welcome Fred. Glad that worked for you.
Richard