. Net to Prevent Users From repeatedly pressing the button

On the Internet, we often interact with users through table lists.
However, because the Web response is slow and fast, the table information may be sent out, resulting in a duplicate loading of the data.
Asp.net has a small way to defend against such situations.

Protected void page_load (Object sender, eventargs E)
...{
If (! Page. ispostback)
...{
Button1.attributes ["onclick"] = "This. Disabled = true;" +
Page. clientscript. getpostbackeventreference (button1 ,"");
}
}
Protected void button#click (Object sender, eventargs E)
...{
System. Threading. thread. Sleep (5000 );
}

When page load is performed, add an onclick attribute to the button. After you press the button, disable yourself and then issue the form submit statement.

<Div>
<Input type = "hidden" name = "_ eventtarget" id = "_ eventtarget" value = ""/>
<Input type = "hidden" name = "_ eventargument" id = "_ eventargument" value = ""/>
<Input type = "hidden" name = "_ viewstate" id = "_ viewstate" value = "/comment + j8gjxshabhpv4 ="/>
</Div>

<SCRIPT type = "text/JavaScript">
<! --
VaR theform = Document. Forms ['form1'];
If (! Theform ){
Theform = Document. form1;
}
Function _ dopostback (eventtarget, eventargument ){
If (! Theform. onsubmit | (theform. onsubmit ()! = False )){
Theform. _ eventtarget. value = eventtarget;
Theform. _ eventargument. value = eventargument;
Theform. Submit ();
}
}
// -->
</SCRIPT>

<Div>
<Input type = "Submit" name = "button1" value = "button" onclick = "this. disabled = true ;__ dopostback ('button1', '');" id = "button1"/>
</Div>

<Div>

In this way, the user can avoid re-clicking the button.