How do I Change comboBox.Text inside a comboBox.Se

Question

Code example:

private void comboBox_SelectedIndexChanged(object sender, EventArgs e)
{
    if(some condition)
    {
        comboBox.Text = "new string"
    }
}

My problem is that the comboBox text always shows the selected index's string value and not the new string. Is the a way round this?

Answer 1

Perhaps it would help if you could explain exactly what you're trying to do. I find that the SelectionChangeCommitted event is considerably more useful for purposes like what you describe than SelectedIndexChanged. Among other things, it's possible to change the selected index again from SelectionChangeCommitted (e.g. if the user's selection is invalid). Also, changing the index from code fires SelectedIndexChanged again, whereas SelectionChangeCommitted is only fired in response to user actions.

Answer 2

you should use:

BeginInvoke(new Action((text) => comboBox.Text = text), "new text to set");

Answer 3

//100% worked

private void ComboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
      BeginInvoke(new Action(() => ComboBox1.Text = "Cool!");
}

Answer 4

You should reset the SelectedIndex property to -1 when setting the Text property.

Answer 5

I searching for solution for same issue. But solve it by handling Format event:

cbWatchPath.Format += new System.Windows.Forms.ListControlConvertEventHandler(this.cbWatchPath_Format);

private void cbWatchPath_Format(object sender, ListControlConvertEventArgs e)
    {
        e.Value = "Your text here";
    }

Answer 6

Move your change code outside of combobox event:

if(some condition)
{
    BeginInvoke(new Action(() => comboBox.Text = "new string"));
}