GridViewComboBoxColumn ShowDropDown / ShowPopUp

[Ryan]

I have a 

 

GridViewComboBoxColumn

 

in a radgridview. Could someone suggest to me how I could force the combobox column to show its drop down when a row is added?

Ryan

[Nikolay]

Hi Ryan,

Thank you for the question.

In order to achieve the desired behavior, you should first set the current cell, call RadGridView.BeginEdit() and then call ShowPopup() of the ActiveEditor, if this editor is RadComboBoxEditor:

private void SetCurrentCellAndShowPopup()
{
    this.radGridView1.Rows[this.radGridView1.Rows.Count - 1].IsCurrent = true;
    this.radGridView1.Columns[6].IsCurrent = true;
    this.radGridView1.BeginEdit();

    if (this.radGridView1.ActiveEditor is RadComboBoxEditor)
    {
        ((RadComboBoxEditor)this.radGridView1.ActiveEditor).ShowPopup();
    }
}

I have prepared a sample project to demonstrate the above code snippet. If you have additional questions, feel free to contact me.

Best wishes,
Nikolay
the Telerik team

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[Phil]

HI Nikolay

This does not work anymore in Q2 2009 701. Any suggestions for a fix?

Thanks
Reference:
((RadComboBoxEditor)this.radGridView1.ActiveEditor).ShowPopup();  

[Jack]

Hello Phil,

We did a major revamp of our editor system in the last release. This caused some breaking changes, which we have described in the release notes. Basically, you should use the EditorElement property of RadComboBoxEditor. Here is the code:

private void SetCurrentCellAndShowPopup()
{
    this.radGridView1.Rows[this.radGridView1.Rows.Count - 1].IsCurrent = true;
    this.radGridView1.Columns[6].IsCurrent = true;
    this.radGridView1.BeginEdit();

    RadComboBoxEditor editor = this.radGridView1.ActiveEditor as RadComboBoxEditor;
    if (editor != null)
    {
        RadComboBoxElement element = (RadComboBoxElement)editor.EditorElement;
        element.ShowPopup();
    }
}

I hope this helps. If you have more questions, please write us.

Regards,
Jack
the Telerik team

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[Phil]

Thanks Jack, missed that in the notes