to raise server side event from the client side javascript.

<asp:Button ID="btnCreate" runat="server" CssClass="hiddencol" OnClick="btnCreate_Click"
Text="Create" UseSubmitBehavior="False" />

//client side script
function RefreshData() {
__doPostBack('btnCreate', '');
}

//Server-side event
protected void btnCreate_Click(object sender, EventArgs e)
{
try
{
//your code
}
catch (Exception)
{
throw;
}
}