hi all, first,thank you for coming in!
I have some problem on a Windows application in .Net Framework,just as
below,also you can get the whole project in the attachment(in c#).
private void button1_Click(object sender, System.EventArgs e)
{
WindowsApplication1.localhost.Service1 ser=new
WindowsApplication1.localhost.Service1();
textBox1.Text=ser.Add(int.Parse(textBox1.Text),1). ToString();
MessageBox.Show("ok");
}
You know, A webservice named ser is called in the above function,and ,when
the main form is loaded for the first time,if I click the button1 on the
form very quickly,the awful thing would happen:a messagebox is showed,when I
close it ,another messagebox is opened,I continue closing, and the same
thing happen:a messagebox is showed.The number of messageboxes is according
to the speed of my mouse clicking.
So, it seems the button1 still accept the click event while a webservice is
being called for the first time.But it would be expected that only one
messagebox should be showed even though I click very quickly.To my
knowledge,a windows form uses a single threaded apartment model(STA): when
one button click event is be processing,the form shouldn't accept another.
Absolutely,I can prevent it from a way:get the button1 disabled before
calling a webservice and enabled it later.But ,as you can see,the project is
a simple one just to test,while the reality is more complex.So,the above
solution is not a very convincing way.I want to get a better one.
Now,please unzip the attachment ,open the project in VS .Net 2003,and run it
..When the form is loaded for the first time,you must click the button1 very
quickly,then you will see that status: msgboxes show up again and again!
After you close all of msgboxes,if you click the button1 again very
quickly,only a msgbox will show.
Most importantly:
1. why would this happen in STA?
2. How can the button1 continue accepting the click event when the form is
loaded for the first time?
3. How to control?
I need your help!!! if you are also wondered about it,get help from people
around you please. Thank you very much!
