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14:15
Merbin Joe
Some situation user need to trigger the postback dynamically from client side using javascript or jQuery. In this situation you can follow this method.
Asp Button
<asp:Button ID="dmypbbtn" runat="server" OnClick="dmycall" style="display:none;" />
javascript code
document.getElementById("<%=dmypbbtn.ClientID%>").click();
jQuery Code
$("#<%=dmypbbtn.ClientID%>").trigger('Click');
When you trigger the click function like the above format, the server side
dmycall method will call with serverside postback.
11:28
Merbin Joe
We can pass the argument to onclick serverside function using CommandArgument attribute like below.
Asp Code
<asp:Button id="bid" CommandArgument="456" runat="server" OnClick="passvalue" />
serverside code (.cs)
protected void passvalue(object sender, EventArgs e)
{
LinkButton btn = (LinkButton)(sender);
String testval = btn.CommandArgument; //Returns 456
}
11:25
Merbin Joe
We can pass the arguments(values) to onclick serverside function using CommandArgument attribute. Here we send the value using the same way of single value passing, but every values are separated by comma and from serverside we can split into unique data value.
Asp Button
<asp:Button id="bid" CommandArgument="456,Rajesh" runat="server" OnClick="passvalue" />
serverside code (.cs)
protected void passvalues(object sender, EventArgs e)
{
LinkButton btn = (LinkButton)(sender);
String fullvalue = btn.CommandArgument; //"456,Rajesh"
String[] args= fullvalue.Split(new char[] { ',' });
int mark = Convert.ToInt32(args[0]); //Returns 456
string name = args[1]; //Returns "Rajesh"
}
14:03
Merbin Joe
The following animation created using pure css and html code no javascript.
14:06
Merbin Joe
If you want to know if the dropdown
change function is calling from human click change or call on dynamically change. You can use the following example.