image button click event

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i am having one grid view in that i have one iten template as

<asp:LinkButton id="lnkAssign1" Text="check" CssClass="firstImage" runat="server" Height="35px" __designer:wfdid="w2" OnClientClick="return ChangeImage(event,this);" CommandArgument='<%# Eval("DriverId") %>' CommandName="Assign" ToolTip="Assign"></asp:LinkButton>

basically this link button shows me two images.initially image is simple checkbox
now if i click on that linkbutton it shows me other image i.e. checkbox with check and vice a versa..

my javascript function in .js file is

function ChangeImage(e)
{
   var obj = e.srcElement || e.target;
   if(document.getElementById(obj.id).className == "firstImage")
   {
  
   document.getElementById(obj.id).className = "secondImage";
   
   }
   else
   {
   document.getElementById(obj.id).className = "firstImage"
   }
   return false;
}

now in my .aspx page i want which image i am clicking..so how to know that?

Posted 23-Sep-10 3:21am

tejasvee

Updated 23-Sep-10 3:26am

thatraja

v2

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Toli Cuturicu 23-Sep-10 17:59pm

Tags: c#
Language: not c#

1 solution

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senthil_jagadeesan · Answer 1 · 2010-09-23T04:53:00

hi,
try to use hidden control when you click the button set the value for that hidden field control like<hidden id="hidImgVal" value="0"> and
then update the value onclick event set ="1" then you can identify the image easily..

<asp:LinkButton id="lnkAssign1" Text="check" CssClass="firstImage" runat="server" Height="35px" __designer:wfdid="w2" OnClientClick="return ChangeImage("0");" CommandArgument='<%# Eval("DriverId") %>' CommandName="Assign" ToolTip="Assign"></asp:LinkButton>
<hidden id="hidImgVal" value = "0"/>

C#

function ChangeImage(iVal)
{
   var iValue= iVal;
   if(iValue == 0)
   {
 document.getElementById("imgBtn").src = "images/image1.jpg"; 
   document.getElementById(hidImgVal).value= 1;
   }
   else
   {
   document.getElementById("imgBtn").src =images/image2.jpg;
   document.getElementById(hidImgVal).value= 0;
   }
   return false;
}

Cool..
regards,
senthil J