C# wait for user to finish typing in a Text Box

Question

Is there a way in C# to wait till the user finished typing in a textbox before taking in values they have typed without hitting enter?

Revised this question a little

Answer 1

I don't know if the onChange() only exists in an older version of c#, but I can't find it!

The following works for detecting when a user either hits the Enter key, or tabs out of the TextBox, but only after changing some text:

    //--- this block deals with user editing the textBoxInputFile --- //
    private Boolean textChanged = false;
    private void textBoxInputFile_TextChanged(object sender, EventArgs e) {
        textChanged = true;
    }
    private void textBoxInputFile_Leave(object sender, EventArgs e) {
        if (textChanged) {
            fileNameChanged();
        }
        textChanged = false;
    }
    private void textBoxInputFile_KeyDown(object sender, KeyEventArgs e) {
        if (textChanged & e.KeyCode == Keys.Enter) {
            fileNameChanged();
        }
        textChanged = false;
    }
    //--- end block  --- //