Add a ToolTip to a GridCommandCellElement

[Paul Patterson]

Hello, I'm using RadControls for Winforms Q2 2010. 

I have the following to create a GridCommandCellElement

Private Sub AddTaskDetailCommand()
    Dim commandColumn As New GridViewCommandColumn
    With commandColumn
      .Name = "ViewTaskDetail"
      .FieldName = "AssetChecklistID"
      .HeaderText = String.Empty
      .Width = 30
      .AllowFiltering = False
      .AllowGroup = False
      .AllowHide = False
      .AllowResize = False
      .AllowSort = False
    End With
    RadGridView1.MasterTemplate.Columns.Insert(0, commandColumn)
    AddHandler RadGridView1.CommandCellClick, AddressOf RadGridView1_CommandCellClick

  End Sub

And then the following in the CellFormatting event...

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

    If (TypeOf (e.CellElement) Is GridCommandCellElement) Then
      Dim cmdCell = DirectCast(e.CellElement, GridCommandCellElement)
      Dim colName = cmdCell.ColumnInfo.Name

      If colName = "ViewTaskDetail" Then
        e.CellElement.ToolTipText = "View Task Details..."
        cmdCell.CommandButton.DisplayStyle = DisplayStyle.Image
        cmdCell.CommandButton.Image = My.Resources.tag_blue_edit
      End If

    End If

  End Sub

Problem is that the tooltip is not visible when hovering over the command button in the cell. There is a small bit of padding in the cell that will display the tooltip when hovering over that, but not over the command. 

Can seem to find a ToolTipText property for the GridCommandCellElement. Is there something I am missing?

Cheers,

Paully

[Paul Patterson]

My bad!! 

There is a ToolTextProperty I can set on the CommandButton (the RadButtonElement) of the GridCommandCellElement.

Here is what I updated...

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

    If (TypeOf (e.CellElement) Is GridCommandCellElement) Then
      Dim cmdCell = DirectCast(e.CellElement, GridCommandCellElement)
      Dim colName = cmdCell.ColumnInfo.Name

      If colName = "ViewTaskDetail" Then
        cmdCell.CommandButton.ToolTipText = "View Task Details..."
        cmdCell.CommandButton.DisplayStyle = DisplayStyle.Image
        cmdCell.CommandButton.Image = My.Resources.tag_blue_edit
      End If

    End If

  End Sub

Thanks anyway,

Paully

[Jack]

Hi Paul Patterson,

I am glad that you have found solution for this issue. If you have any further questions, do not hesitate to contact us.

Best wishes,
Jack
the Telerik team

[Xavier Soares]

nevermind! My mistake. Sorry.

[Deborah]

I would also like to set the Tooltiptext for my cell in the Formatting event instead of having to have special tooltipneeded event.

However, my cell does not contain a button so the posted solution does not work for me.

Is there a way to set the tooltip text for a cell in the Formatting event?

Thanks!

[Richard Slade]

Hi Deborah,

Hope you're well. The following code from the documentation shows adding a tooltip using the CellFormatting event.

public Tooltips1()
{
    InitializeComponent();
    DataTable t = new DataTable();
    t.Columns.Add("A");
    t.Columns.Add("B");
    t.Rows.Add("Name 1", "Code 1");
    t.Rows.Add("Name 2", "Code 2");
    this.radGridView1.DataSource = t;
    this.radGridView1.Columns["B"].IsVisible = false;
    radGridView1.BestFitColumns();
}

void radGridView1_CellFormatting(object sender, Telerik.WinControls.UI.CellFormattingEventArgs e)
{
    if (this.radGridView1.Rows[e.CellElement.RowIndex].Cells["B"].Value != null)
    {
        e.CellElement.ToolTipText = this.radGridView1.Rows[e.CellElement.RowIndex].Cells["B"].Value.ToString();
    }
}

The help topic can be found here

Hope that helps
Richard

[Stefan]

Hello Deborah,

Thank you for writing.

The other way to set tooltip text to the cells concerns the process of handling the ToolTipTextNeeded event of RadGridView. This event is fired only when a tooltip needs to be shown and actually this approach should work slightly better than the CellFormatting approach where you are setting the ToolTipText to all cells no matter whether they currently need tooltip text or not. We will update our documentation accordingly.

I hope you find this information useful.

Best wishes,
Stefan
the Telerik team