TextBox TextChanged event on programmatic versus user change of text contents

Question

I would like to differentiate between changing the text programmatically (for example in a button click handler event) and user input (typing, cutting and pasting text). <

Answer 1

Similar to JHunz's answer, just add a boolean member variable to your control:

bool programmaticChange = false;

When you are making programmatic changes do this:

programmaticChange = true;
// insert changes to the control text here
programmaticChange = false;

In your event handlers, you just need to inspect the value of programmaticChange to determine if its a programmatic change or not.

Fairly obvious and not very elegant but its also workable and simple.