Custom dataGridView.EditingControl loses values

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I have created a custom Windows Form comboBox (editingControl) and a custom dataGridViewCell that inherits from DataGridViewTextBoxCell. My problem is my custom comboBox loses list items if another editing control is selected.

Seems that whenever I enter a new cell or reenter an existing cell the dataGridView.EditingControl re-initializes itself therefore losing the prior state before leaving edit mode and tiggering edit mode in another cell

Has anyone else had this issue?

-DA

Posted 1-Nov-13 2:28am

d.allen101

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strogg · Answer 1 · 2013-11-05T08:34:00

Does the problem occur when you begin an edit? If so,
Check if you have overridden the DataGridViewTextBoxCell's InitializeEditingControl Method. You must initialize the control's value inside it.
Here's a typical implementation

public override void InitializeEditingControl(int rowIndex, object
    initialFormattedValue, DataGridViewCellStyle dataGridViewCellStyle)
{
    base.InitializeEditingControl(rowIndex, initialFormattedValue,
        dataGridViewCellStyle);
    TextBox ctl =
        DataGridView.EditingControl as TextBox;

    ctl.Text = (string)this.Value; // or convert to string if y'r using some other type
}

If this is not the issue, share your code. I might be able to help.