showing a panel before running a function

[mcmcom]

hi all,

i have a button which starts an upload,

before starting i want to do something that tells the user the file is uploading. I have the function UploadImage() to upload the file and a panel i want to make visible before i run that function.

i tried


button_click(object sender,System.EventArgs e){
this.pnl1.Visible = true;
UploadImage();
}


but this starts upload image before the page refreshes to show the panel. How can i refresh the page and then run the uploadimage function? I tried to put it in IsPostBack, but it still fired before the control rendered. Any ideas?

thanks

mcm