February 24, 2016 19:43 by
PeterThis code for how to Make all Child Check Boxes checked on Master Check Box Checked Event. Checkboxes allow the user to select one or more options from a set. Typically, you should present each checkbox option in a vertical list. Now write the following code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div style="height:70%;width:70%">
<asp:GridView ID="gridview1" runat="server" AutoGenerateColumns="False"
DataKeyNames="ID" DataSourceID="SqlDataSource1" BackColor="White"
BorderColor="#E7E7FF" BorderStyle="None" BorderWidth="1px" CellPadding="3"
GridLines="Horizontal" Width="100%">
<AlternatingRowStyle BackColor="#F7F7F7" />
<Columns>
<asp:TemplateField>
<HeaderTemplate>
<asp:CheckBox ID="CheckBox2" onclick="headercheckbox(this);" runat="server" />
</HeaderTemplate>
<ItemTemplate>
<asp:CheckBox ID="CheckBox1" onclick="childcheckboxes(this);" runat="server" />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
<asp:LinkButton ID="LinkButton1" runat="server">Delete</asp:LinkButton>
</HeaderTemplate>
<ItemTemplate>
<asp:LinkButton ID="LinkButton2" runat="server">Delete</asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="ID" HeaderText="ID" InsertVisible="False"
ReadOnly="True" SortExpression="ID" />
<asp:BoundField DataField="Name" HeaderText="Name" SortExpression="Name" />
<asp:BoundField DataField="Class" HeaderText="Class" SortExpression="Class" />
<asp:BoundField DataField="Lastname" HeaderText="Lastname"
SortExpression="Lastname" />
</Columns>
<FooterStyle BackColor="#B5C7DE" ForeColor="#4A3C8C" />
<HeaderStyle BackColor="#4A3C8C" Font-Bold="True" ForeColor="#F7F7F7" />
<PagerStyle BackColor="#E7E7FF" ForeColor="#4A3C8C" HorizontalAlign="Right" />
<RowStyle BackColor="#E7E7FF" ForeColor="#4A3C8C" />
<SelectedRowStyle BackColor="#738A9C" Font-Bold="True" ForeColor="#F7F7F7" />
<SortedAscendingCellStyle BackColor="#F4F4FD" />
<SortedAscendingHeaderStyle BackColor="#5A4C9D" />
<SortedDescendingCellStyle BackColor="#D8D8F0" />
<SortedDescendingHeaderStyle BackColor="#3E3277" />
</asp:GridView>
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:akConnectionString %>"
SelectCommand="SELECT [ID], [Name], [Class], [Lastname] FROM [nametb]">
</asp:SqlDataSource>
<script type="text/javascript" language="javascript">
var gridview = document.getElementById("gridview1");
function headercheckbox(checkbox) {
for (var i = 1; i < gridview.rows.length; i++)
{
gridview.rows[i].cells[0].getElementsByTagName("INPUT")[0].checked = checkbox.checked;
}
}
function childcheckboxes(checkbox) {
var atleastekcheck = false;
for (var i = 1; i < gridview.rows.length; i++)
{
if (gridview.rows[i].cells[0].getElementsByTagName("INPUT")[0].checked == false)
{
atleastekcheck = true;
break;
}
}
gridview.rows[0].cells[0].getElementsByTagName("INPUT")[0].checked = !atleastekcheck ;
}
</script>
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