So I’ve been having this wierd problem with event execution order where half way through handling one event another event handler is fired. If you know why please enlighten me!

Here’s a copy of my newsgroup post which you can find here.

I am seeing some unexpected behaviour in a single threaded winforms app

and was hoping someone could explain what is going on.

I have two events attached to a chart control on my form, and during

execution one event seems to preempt the execution of the other.

My code looks similar to the following:

private void MyChart_Click(object sender, System.EventArgs e)

{

…do some logic tests

GetSomeData();

}

// This event is attached to the context menu for the chart control.

private void DrillDownMenuItem_Click(object sender, System.EventArgs e)

{

…do stuff

}

private DataSet GetSomeData()

{

…setup tasks

…Call web service

…finish stuff

}

What happens is that when I right click and select drill down from the

chart controls context menu the MyChart_Click event fires and does the

logic tests. Execution then steps into the GetSomeData method, but when

the web service is called execution jumps to the

DrillDownMenuItem_Click event. This runs to completion then execution

returns to the GetSomeData method which finishes and finally returns to

the MyChart_Click event handler.

Can someone explain why this is so?

[EDIT] so I figured it out by myself. I turns out it is a bug in the dundas chart control >:-(