<%@ Page Language="C#" %>
<%@ import Namespace="System.Data" %>
<%@ import Namespace="System.Data.SqlClient" %>
SqlDataReader myReader;
void Page_Load(object sender, EventArgs e)
{
string ConnectionString = Convert.ToString(ConfigurationSettings.AppSettings["MSDEConnectString"]);
SqlConnection myConnection = new SqlConnection(ConnectionString);
SqlCommand myCommand = new SqlCommand();
myCommand.Connection = myConnection;
try {
myConnection.Open();
if (!(Page.IsPostBack)) {
myCommand.CommandText = "SELECT PublisherID, PublisherName FROM Publisher";
myReader = myCommand.ExecuteReader();
ListBox1.DataBind();
myReader.Close();
} else {
myCommand.CommandText = "SELECT * FROM Book WHERE BookPublisherID=" + ListBox1.SelectedItem.Value;
myReader = myCommand.ExecuteReader();
DataGrid1.DataSource = myReader;
DataGrid1.DataBind();
myReader.Close();
}
} catch (Exception ex) {
throw (ex);
} finally {
myConnection.Close();
}
}
A RadioButtonList
">
A DropDownList
">
A ListBox
" Rows="5">
File: Web.config