Hi,
I'm passing a variable to another page through a querystring. I then want
to use that variable to retrieve records from a database to poulate a
dropdownlist. I can read the variable from the querystring but I'm not sure
how to pass that value. I get the error that IntCourseID is not declared in:
<asp:DropDownList id="fLessonID" runat="server" DataValueField="LessonID"
DataSource="<%# GetLessons(IntCourseID) %>"
I tried moving the querystring outside the page load but that didn't work:
This is the code I have:
<%@ Page Language="VB" Debug="true" validaterequest="false" %>
<script runat="server">
Sub Page_Load(sender As Object, e As EventArgs)
If Page.IsPostBack = False Then
Dim IntCourseID as Integer
IntCourseID = Request.QueryString( "CourseID" )
End If
End Sub
Function GetLessons(ByVal courseID As Integer) As
System.Data.IDataReader
Dim connectionString As String = "server='(local)';
trusted_connection=true; database='xx'"
Dim dbConnection As System.Data.IDbConnection = New
System.Data.SqlClient.SqlConnection(connectionStri ng)
Dim queryString As String = "SELECT [tblLesson].[LessonID],
[tblLesson].[LessonTitle] FROM [tblLesson] WHERE ("& _
"[tblLesson].[CourseID] = @CourseID)"
Dim dbCommand As System.Data.IDbCommand = New
System.Data.SqlClient.SqlCommand
dbCommand.CommandText = queryString
dbCommand.Connection = dbConnection
Dim dbParam_courseID As System.Data.IDataParameter = New
System.Data.SqlClient.SqlParameter
dbParam_courseID.ParameterName = "@CourseID"
dbParam_courseID.Value = courseID
dbParam_courseID.DbType = System.Data.DbType.Int32
dbCommand.Parameters.Add(dbParam_courseID)
dbConnection.Open
Dim dataReader As System.Data.IDataReader =
dbCommand.ExecuteReader(System.Data.CommandBehavio r.CloseConnection)
Return dataReader
End Function
Sub addButton_Click(sender As Object, e As EventArgs)
Response.Redirect("selectPage.aspx")
End Sub
</script>
<html>
<head>
</head>
<body leftmargin="0" topmargin="0">
<form runat="server">
<asp:DropDownList id="fLessonID" runat="server"
DataValueField="LessonID" DataSource="<%# GetLessons(IntCourseID) %>"
DataTextField="LessonTitle"></asp:DropDownList>
<asp:Button id="addButton" onclick="addButton_Click" runat="server"
Text="Next"></asp:Button>
</form>
</body>
</html>
Thanks for any help
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