📄 datalistmasterdetail.aspx

📁 asp.net技术内幕的书配源码
💻 ASPX
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<%@ Page Language="C#" %>
<%@ Import Namespace="System.Data.SqlClient" %>

<script runat=server>

void Page_Load(Object sender , EventArgs e) 
{
	if (! IsPostBack)
	{
		BindDataList();
	}
}

void BindDataList (){
	SqlConnection conNorthwind;
	SqlCommand cmdSelect;
	SqlDataReader dtrCategories;

	conNorthwind = new SqlConnection( @"Server=localhost;Integrated Security=SSPI;Database=Northwind" );
	cmdSelect = new SqlCommand( "Select CategoryID, CategoryName From Categories", conNorthwind );
	conNorthwind.Open();
	dtrCategories = cmdSelect.ExecuteReader();

	dlstCategories.DataSource = dtrCategories;
	dlstCategories.DataBind();

	dtrCategories.Close();
	conNorthwind.Close();
}

void BindRepeater( int intCatID ) {
	SqlConnection conNorthwind;
	string  strSelect;
	SqlCommand cmdSelect;
	SqlDataReader dtrProducts;

	conNorthwind = new SqlConnection( @"Server=localhost;Integrated Security=SSPI;Database=Northwind" );
	strSelect = "Select ProductName From Products Where CategoryID=@catID";
	cmdSelect = new SqlCommand( strSelect, conNorthwind );
	cmdSelect.Parameters.Add( "@catID", intCatID );
	conNorthwind.Open();
	dtrProducts = cmdSelect.ExecuteReader();

	rptProducts.DataSource = dtrProducts;
	rptProducts.DataBind();

	dtrProducts.Close();
	conNorthwind.Close();
}

void dlstCategories_ItemCommand( object s, DataListCommandEventArgs e ) {
	int intCatID;
	 
	dlstCategories.SelectedIndex = e.Item.ItemIndex;
	BindDataList();
	intCatID = (int)dlstCategories.DataKeys[(int)e.Item.ItemIndex];
	BindRepeater( intCatID );
}

</Script>

<html>
<head><title>DataListMasterDetail.aspx</title></head>
<body>
<form Runat="Server">

<table width="100%">
<tr><td valign="top">

<asp:DataList
  ID="dlstCategories"
  OnItemCommand="dlstCategories_ItemCommand"
  DataKeyField="CategoryID"
  ItemStyle-BorderStyle="Solid"
  ItemStyle-BorderColor="Blue"
  Width="200"
  CellPadding="5"
  CellSpacing="10"
  BackColor="lightgrey"
  Runat="Server">

<ItemTemplate>
  <asp:LinkButton
    Text='<%#DataBinder.Eval(Container.DataItem, "CategoryName" )%>'
    Runat="Server" />
</ItemTemplate>

<SelectedItemTemplate>
  <b><i><%#DataBinder.Eval(Container.DataItem, "CategoryName" )%></i></b>
</SelectedItemTemplate>

</asp:DataList>

</td><td valign="top" width="100%">

<asp:Repeater
  ID="rptProducts"
  Runat="Server">

<ItemTemplate>
  <%#DataBinder.Eval(Container.DataItem,  "ProductName" ) %>
</ItemTemplate>

<SeparatorTemplate>
  <hr>
</SeparatorTemplate>

</asp:Repeater>

</td></tr>
</table>

</form>
</body>
</html>
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