Hi Friends ,

aspx page inherited by master page then
OnCheckedChanged event Not Working inside gridview ,before  inherited from master page it works fine please give me suggestion..

our Code is.

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="GenerateWOInvoice.aspx.cs"
    MasterPageFile="~/MasterPage/PopupMasterPage.master" Inherits="Workorder_GenerateWOInvoice" Culture="auto" meta:resourcekey="PageResource1" UICulture="auto" %>

<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="cc1" %>

<%@ Register Src="~/UserControl/ucMessage.ascx" TagName="ucMessage" TagPrefix="ucMsg" %>
<%@ Register Assembly="ZedControlLib" Namespace="ZedControlLib" TagPrefix="ucControl" %>





                           

                               
                                                                            Text="Service Charge Details" meta:resourcekey="lblServiceChargeDetailsTextResource1">
                               
                           

                           

                           

                           

                               
                                                                            GridLines="None" ItemStyle-CssClass="gridrow" AlternatingItemStyle-CssClass="gridrow1"
                                        BorderWidth="0px" CellPadding="2" Width="100%" DataKeyNames="ChargeId" OnDataBound="gvServiceCharge_DataBound"
                                        OnRowDataBound="gvServiceCharge_RowDataBound" meta:resourcekey="gvServiceChargeResource1">
                                       
                                       
                                       
                                       
                                           
                                               
                                                                                                            OnCheckedChanged="chkSelect_SC_CheckedChanged" AutoPostBack="true" />
                                               
                                               
                                           
                                                                                            Visible="False">
                                               
                                                                                                            Text='<%# Eval("ServiceChargeCategory") %>'>
                                               
                                               
                                           
                                           
                                               
                                                                                                            Text='<%# Eval("ServiceChargeCategory") %>'>
                                               
                                               
                                           
                                           
                                               
                                                    <%--                                                          Text='<%# Eval("ChargeAmount") %>'>--%>
                                                                                                            ReadOnly="true" AutoPostBack="true" meta:resourcekey="txtServiceChargeAmountResource1"
                                                        OnTextChanged="txtServiceChargeAmount_TextChanged">
                                               
                                           
                                           
                                               
                                                                                                            Text='<%# Eval("ServiceChargeCategoryId") %>'>                                                            runat="server" meta:resourcekey="lblWarrantyStatusResource1" Text='<%# Eval("WarrantyStatus") %>'>                                                                ID="lblEditableFlag" runat="server" meta:resourcekey="lblEditableFlagResource1"
                                                                Text='<%# Eval("Editable") %>'>
                                               
                                           
                                       
                                       
                                       
                                   
                                   

                                       
                                                                                            ID="txtServiceTotal" ReadOnly="True" runat="server" CssClass="formfields" Text="0.00"
                                                meta:resourcekey="txtServiceTotalResource1">

                               
                           

                       



=========Cs Code.=========

 protected void chkSelect_SC_CheckedChanged(object sender, EventArgs e)
    {
        double Total = 0;
        for (int i = 0; i < gvServiceCharge.Rows.Count; i++)
        {
            if (((CheckBox)gvServiceCharge.Rows[i].FindControl("chkSelect_SC")).Checked == true)
            {
                Label editableFlag = ((Label)gvServiceCharge.Rows[i].FindControl("lblEditableFlag"));
                TextBox editableServiceChargeAmount = ((TextBox)gvServiceCharge.Rows[i].FindControl("txtServiceChargeAmount"));

                if (editableFlag.Text == "1")
                    editableServiceChargeAmount.ReadOnly = false;
                else
                    editableServiceChargeAmount.ReadOnly = true;
            
                Total = Total + Convert.ToDouble(editableServiceChargeAmount.Text);
            }

        }
        txtServiceTotal.Text = Math.Round(Total, 2).ToString();
        lblLaborCharge.Text = Math.Round(Total, 2).ToString();
        txtTotalAfterDis.Text = Math.Round(Total, 2).ToString();
        UpdateTotalAmount();
    }