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<%@ Page Language="C#" %>
<%@ import Namespace="System.Data" %>
<%@ import Namespace="System.Data.SqlClient" %>
<script runat="server">
void Page_Load(object sender, EventArgs e) {
if (!Page.IsPostBack)
{
string ConnectionString = ConfigurationSettings.AppSettings["MSDEConnectString"];
SqlConnection myConnection = new SqlConnection(ConnectionString);
try{
string CommandTextPublisher = "SELECT PublisherID, PublisherName FROM Publisher";
SqlCommand myCommandPublishers = new SqlCommand(CommandTextPublisher, myConnection);
myConnection.Open();
DropDownList1.DataSource = myCommandPublishers.ExecuteReader();
DropDownList1.DataTextField = "PublisherName";
DropDownList1.DataValueField = "PublisherID";
DropDownList1.DataBind();
DropDownList1.Items.Insert(0, new ListItem("-- All Publishers --", "0"));
}
catch (Exception ex){
throw(ex);
}
finally{
myConnection.Close();
}
}
}
void ApplyFilter_Click(Object sender, EventArgs e) {
string ConnectionString = ConfigurationSettings.AppSettings["MSDEConnectString"];
SqlConnection myConnection = new SqlConnection(ConnectionString);
try{
string CommandTextBooks = "SELECT Book.BookTitle, Publisher.PublisherName FROM Book INNER JOIN Publisher on Book.BookPublisherID = Publisher.PublisherID";
string filterValue = DropDownList1.SelectedValue;
if (filterValue != "0")
CommandTextBooks += " WHERE Book.BookPublisherID = " + filterValue;
CommandTextBooks+=" ORDER BY Book.BookTitle";
SqlCommand myCommandBooks = new SqlCommand(CommandTextBooks, myConnection);
myConnection.Open();
DataGrid1.DataSource = myCommandBooks.ExecuteReader();
DataGrid1.DataBind();
}
catch (Exception ex){
throw(ex);
}
finally{
myConnection.Close();
}
}
</script>
<html>
<head>
</head>
<body>
<form runat="server">
Select a Publisher:
<asp:DropDownList id="DropDownList1" runat="server"></asp:DropDownList>
<asp:Button id="Button1" onclick="ApplyFilter_Click" runat="server" Text="Show Titles"></asp:Button>
<asp:datagrid id="DataGrid1" runat="server" EnableViewState="False">
<HeaderStyle font-bold="True" forecolor="white" backcolor="#4A3C8C"></HeaderStyle>
<ItemStyle backcolor="#DEDFDE"></ItemStyle>
</asp:datagrid>
</form>
</body>
</html>
File: Web.config
<configuration>
<appSettings>
<add key="MSDEConnectString" value="server=(local)\YourDatabase;database=Books;uid=YourID;pwd=letmein;" />
</appSettings>
</configuration>
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