datalist--checkbox
http://community.csdn.net/Expert/topic/5566/5566508.xml?temp=.1127741
<%@ Page Language="C#" %>
<%@ Import Namespace="System.Data" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack) {
LoadProductData();
}
}
void dlstProCat_ItemDataBound(object sender, DataListItemEventArgs e)
{
DataRowView drv = e.Item.DataItem as DataRowView;
if(drv == null) return;
DataRow dr = drv.Row;
DataList dlstPro = e.Item.FindControl("dlstPro") as DataList;
DataView dvPro = dr.Table.ChildRelations["ProCatShip"].ChildTable.DefaultView;
dvPro.RowFilter = "CategoryId = " + dr["CategoryID"].ToString();
dlstPro.DataSource = dvPro;
dlstPro.DataBind();
}
void LoadProductData()
{
DataSet ds = CreateProductCategoryDataSet();
dlstProCat.DataSource = ds.Tables["Categories"];
dlstProCat.DataBind();
}
#region sample data
static DataSet CreateProductCategoryDataSet()
{
DataSet ds = new DataSet("ProductCategorySet");
DataTable dtPro = CreateProductTable();
DataTable dtCat = CreateCategoryTable();
ds.Tables.Add(dtPro);
ds.Tables.Add(dtCat);
ds.Relations.Add("ProCatShip", dtCat.Columns["CategoryID"], dtPro.Columns["CategoryID"]);
return ds;
}
static DataTable CreateProductTable()
{
DataTable tbl = new DataTable("Products");
tbl.Columns.Add("ProductID", typeof(int));
tbl.Columns.Add("ProductName", typeof(string));
tbl.Columns.Add("CategoryID", typeof(int));
DataRow row = tbl.NewRow();
row[0] = 1;
row[1] = "Chai";
row[2] = 1;
tbl.Rows.Add(row);
row = tbl.NewRow();
row[0] = 2;
row[1] = "Chang";
row[2] = 1;
tbl.Rows.Add(row);
row = tbl.NewRow();
row[0] = 3;
row[1] = "Aniseed Syrup";
row[2] = 2;
tbl.Rows.Add(row);
row = tbl.NewRow();
row[0] = 4;
row[1] = "Chef Anton's Cajun Seasoning";
row[2] = 2;
tbl.Rows.Add(row);
row = tbl.NewRow();
row[0] = 5;
row[1] = "Chef Anton's Gumbo Mix";
row[2] = 2;
tbl.Rows.Add(row);
row = tbl.NewRow();
row[0] = 47;
row[1] = "Zaanse koeken";
row[2] = 3;
tbl.Rows.Add(row);
row = tbl.NewRow();
row[0] = 48;
row[1] = "Chocolade";
row[2] = 3;
tbl.Rows.Add(row);
row = tbl.NewRow();
row[0] = 49;
row[1] = "Maxilaku";
row[2] = 3;
tbl.Rows.Add(row);
return tbl;
}
public static DataTable CreateCategoryTable()
{
DataTable tbl = new DataTable("Categories");
tbl.Columns.Add("CategoryID", typeof(int));
tbl.Columns.Add("CategoryName", typeof(string));
DataRow row = tbl.NewRow();
row[0] = 1;
row[1] = "Beverages";
tbl.Rows.Add(row);
row = tbl.NewRow();
row[0] = 2;
row[1] = "Condiments";
tbl.Rows.Add(row);
row = tbl.NewRow();
row[0] = 3;
row[1] = "Confections";
tbl.Rows.Add(row);
return tbl;
}
#endregion
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Nested DataList</title>
<script type="text/javascript">
function chkCatPro_Clicked(sender, suredId1, suredId2)
{
var cnt = sender.parentElement.parentElement.parentElement;
var nptArr = cnt.getElementsByTagName("input");
for(var i = 0; i < nptArr.length; i++) {
if(nptArr[i].type == 'checkbox' &&
(nptArr[i].id.indexOf(suredId1) > -1 || nptArr[i].id.indexOf(suredId2) > -1)) {
nptArr[i].checked = sender.checked;
}
}
}
function chkCat_Clicked(sender, suredId)
{
var cnt = sender.parentElement;
var nptArr = cnt.getElementsByTagName("input");
for(var i = 0; i < nptArr.length; i++) {
if(nptArr[i].type == 'checkbox' && nptArr[i].id.indexOf(suredId) > -1) {
nptArr[i].checked = sender.checked;
}
}
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:DataList ID="dlstProCat" runat="server" OnItemDataBound="dlstProCat_ItemDataBound">
<HeaderTemplate>
<asp:CheckBox ID="chkCatPro" onclick="chkCatPro_Clicked(this, 'chkCat', 'chkPro')" runat="server" />
</HeaderTemplate>
<ItemTemplate>
<asp:CheckBox ID="chkCat" onclick="chkCat_Clicked(this, 'chkPro')" runat="server" />
<asp:Label ID="Label1" runat="server" Text='<%# Eval("CategoryName") %>'></asp:Label>
<div style="padding-left:20px;">
<asp:DataList ID="dlstPro" runat="server" >
<ItemTemplate>
<asp:CheckBox ID="chkPro" runat="server" />
<asp:Label ID="Label1" runat="server" Text='<%# Eval("ProductName") %>'></asp:Label>
</ItemTemplate>
</asp:DataList>
</div>
</ItemTemplate>
</asp:DataList>
</div>
</form>
</body>
</html>
