Fire a comboBox SelectedIndexChanged event programmatically in C#

Question

There is a comboBox and a button on a win form. How can I fire the comboBox selectedIndexChanged by clicking on the button.

Answer 1

You should rethink your code design a little. It seems you want to raise the event to trigger some action indirectly. Why not try it like this:

private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
     // do the things that should happen only if a real change happend
     // ...
     // then do the special thing you want
     DoTheOtherStuff();
}
private void button1_Clicked(object sender, EventArgs e)
{
    // do the things to happen when the button is clicked
    // ...
    // then do the special thing you want
    DoTheOtherStuff();
}
private void DoTheOtherStuff()
{
    // the special thing you want
}

EDIT: If your legacy code is so awkward as your comment suggests, you can still use this awkward way:

private void button1_Clicked(object sender, EventArgs e)
{
    comboBox1_SelectedIndexChanged(comboBox1, EventArgs.Empty);
}