asp.net grid view checkbox - asp.net

Question

I have grid view
<cc1:GridView ID="gvMenu" runat="server" AllowPaging="False" AllowSorting="False"
AutoGenerateColumns="False" CssClass="mGrid" Width="100%" DataKeyNames="ID,MenuName"
DataSourceID="OdsGetMenuDetails" OnRowDataBound="gvMenu_RowDataBound">
<%--OnRowDataBound="gvAddLeave_RowDataBound"--%>
<AlternatingRowStyle CssClass="alt" />
<HeaderStyle CssClass="GridViewHeaderStyle" />
<PagerStyle CssClass="pgr" />
<RowStyle Wrap="false" />
<EmptyDataRowStyle BackColor="#edf5ff" Height="300px" HorizontalAlign="Center" VerticalAlign="Middle" />
<EmptyDataTemplate>
No Records Found
</EmptyDataTemplate>
<Columns>
<asp:TemplateField HeaderText="Sr.No">
<ItemTemplate>
<%# (gvMenu.PageIndex * gvMenu.PageSize) + Container.DataItemIndex + 1%>
</ItemTemplate>
<HeaderStyle CssClass="style4" ForeColor="White" Width="5%" />
<ItemStyle CssClass="style4" />
</asp:TemplateField>
<asp:BoundField DataField="ID" HeaderText="Menu ID" SortExpression="ID" Visible="false">
<HeaderStyle CssClass="style4" Width="100px" HorizontalAlign="Left" ForeColor="White" />
<ItemStyle CssClass="style4" />
</asp:BoundField>
<asp:BoundField DataField="MenuName" HeaderText="MenuName" SortExpression="MenuName">
<HeaderStyle CssClass="style4" Width="80%" HorizontalAlign="Left" ForeColor="White" />
<ItemStyle CssClass="style4" />
</asp:BoundField>
<asp:TemplateField HeaderText="View">
<HeaderTemplate>
<asp:CheckBox ID="chkHeaderApprove" runat="server" Text="View" onclick="javascript:SelectAllCheckboxes1(this);" />
</HeaderTemplate>
<ItemTemplate>
<asp:CheckBox ID="chkApprove" runat="server" Checked='<%# Eval("ViewStatus").ToString().Trim() == "1" ? true : false %>' />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</cc1:GridView>
with this objectDataSource
<asp:ObjectDataSource ID="OdsGetMenuDetails" runat="server" SelectMethod="GetMenuName"
EnablePaging="true" TypeName="AdsWorksDBMenuAuthorizationDAL" StartRowIndexParameterName="startIndex"
SortParameterName="sortBy" MaximumRowsParameterName="pageSize" SelectCountMethod="GetMenuCount">
</asp:ObjectDataSource>
I want to do the <asp:CheckBox ID="chkHeaderApprove" > checked when all my <asp:CheckBox ID="chkApprove"> is checked??
I am not able to do this please help me some more....

Answer 1

Add this:
<asp:CheckBox ID="chkApprove" runat="server" Checked='<%# Eval("ViewStatus").ToString().Trim() == "1" ? true : false %>' OnCheckedChanged="chkApprove_CheckChanged"/>
And in code behind:
protected void chkApprove_CheckChanged(object sender, EventArgs e)
{
CheckBox cb = (CheckBox)sender;
GridView g1 = (GridView)cb.Parent.Parent;
foreach (GridViewRow item in g1.Rows)
{
CheckBox currentCheckBox = (CheckBox)item.FindControl("chkApprove");
if (currentCheckBox.Checked != true)
return;
}
CheckBox chkHeaderApprove = (CheckBox)g1.FindControl("chkHeaderApprove");
chkHeaderApprove.Checked = true;
}
This should work.. didn't check. Anyways client side should be better, go for that.. This is just a easy server side solution.