Hi:
I have two drop downs bound to the same data source.. These dropdowns are automatically populated from a database. When I click the button I get some sort of strange query error.
Not sure what I'm doing wrong here.
<%@.ImportNamespace="System.Data" %>
<%@.ImportNamespace="System.Data.SQLClient" %>
<scriptlanguage="VB"runat="server">
Dim sOrderbyasString
Dim sDirectionasString
Dim MySQLAsString
Dim MySQL1AsString
Dim sSubjectAsString
Dim sCategoryAsString
Sub Page_Load(ByVal SourceAsObject,ByVal EAs EventArgs)
IfNot Page.IsPostBackThen
Dim strConnAsString ="server=GAALP-DT-UHABB2\CFW;uid=sa;pwd=removed;database=NetG"
Dim MySQLAsString ="Select DISTINCT [Subject] from dbo_v_netG_courses"
Dim MySQL1AsString ="Select DISTINCT [Category] from dbo_v_netG_courses"
Dim MyConnAsNew SqlConnection(strConn)
Dim objDRAs SqlDataReader
Dim CmdAsNew SqlCommand(MySQL, MyConn)
Dim Cmd1AsNew SqlCommand(MySQL1, MyConn)
MyConn.Open()
objDR = Cmd.ExecuteReader(System.Data.CommandBehavior.CloseConnection)
ddl.DataSource = objDR
ddl.DataValueField ="Subject"
ddl.DataTextField ="Subject"
ddl.DataBind()
MyConn.Close()
MyConn.Open()
ddlDir.DataSource = Cmd1.ExecuteReader(System.Data.CommandBehavior.CloseConnection)
ddlDir.DataValueField ="Category"
ddlDir.DataTextField ="Category"
ddlDir.DataBind()
MyConn.Close()
ddl.Items.Insert(0,"-- Choose --")
ddlDir.Items.Insert(0,"-- Choose --")
EndIf
'ddl.Items.Insert(0, "-- Choose --")
EndSub
' Sub Page_Change(ByVal sender As Object, ByVal e As DataGridPageChangedEventArgs)
' MyDataGrid.CurrentPageIndex = e.NewPageIndex
' BindData()
'Sub GridOne(ByVal Source As Object, ByVal E As EventArgs)
' MyDataGrid.CurrentPageIndex = 0
'End Sub
'Sub GetData(ByVal Source As Object, ByVal E As EventArgs)
' BindData()
' End Sub
Sub BindData(ByVal SourceAsObject,ByVal EAs EventArgs)
sSubject = ddlDir.SelectedItem.Text
sCategory = ddlDir.SelectedItem.Value
Dim strConnAsString ="server=GAALP-DT-UHABB2\CFW;uid=sa;pwd=removed;database=NetG"
If sSubject =""And sCategory =""Then
MySQL ="Select * from dbo_v_netG_courses"
Else ( THIS LINE IS GIVING ME THE ERROR)
MySQL ="Select * from dbo_v_netG_courses where [Subject] = & sSubject"
EndIf
Dim MyConnAsNew SqlConnection(strConn)
Dim dsAs DataSet =New DataSet()
Dim CmdAsNew SqlDataAdapter(MySQL, MyConn)
Cmd.Fill(ds,"dbo_v_netG_courses")
MyDataGrid.DataSource = ds.Tables("dbo_v_netG_courses").DefaultView
MyDataGrid.DataBind()
EndSub
</script>
<html>
<head>
<metaname="GENERATOR"Content="ASP Express 3.0">
<title>Ad Hoc Sorting with a DataGrid</title>
</head>
<body>
<Formid="form1"runat="server">
<table>
<tr>
<tdalign="Left"valign="Top"><b><i>View Employee Data</i></b></td>
<tdalign="right"valign="Top">
Subject:<asp:dropdownlistid="ddl"runat="server">
</asp:dropdownlist>
Category:<asp:dropdownlistid="ddlDir"runat="server">
</asp:dropdownlist><br/>
<br/>
<asp:Buttonid="btn1"Text="View Records"onclick="BindData"runat="server"/><br/>
</td>
</tr>
<tr>
<tdalign="Left"valign="Top"Colspan="2">
<asp:Datagridrunat="server"
Id="MyDataGrid"
GridLines="Both"
cellpadding="0"
cellspacing="0"
Headerstyle-BackColor="#8080C0"
Headerstyle-Font-Bold="True"
Headerstyle-Font-Size="12"
BackColor="#8080FF"
Font-Size="10"
AlternatingItemStyle-BackColor="#EFEFEF"
AlternatingItemStyle-Font-Size="10"
BorderColor="Black">
</asp:DataGrid><br> </td>
</tr>
</table>
</form>
</body>
</html>
This code works now.. One question though.. How can I return all values by default when the page loads..
Thanks
Working code in VB for multiple dropdown selections and then button click to submit values
<%@.ImportNamespace="System.Data" %>
<%@.ImportNamespace="System.Data.SQLClient" %>
<scriptlanguage="VB"runat="server">
Dim sOrderbyasString
Dim sDirectionasString
Dim MySQLAsString
Dim MySQL1AsString
Dim sSubjectAsString
Dim sCategoryAsString
Sub Page_Load(ByVal SourceAsObject,ByVal EAs EventArgs)
IfNot Page.IsPostBackThen
Dim strConnAsString ="server=LAPTOP;uid=sa;pwd=sa;database=NetG"
Dim MySQLAsString ="Select DISTINCT [Subject] from dbo_v_netG_courses"
' Dim MySQL1 As String = "Select DISTINCT [Category] from dbo_v_netG_courses"
Dim MyConnAsNew SqlConnection(strConn)
Dim objDRAs SqlDataReader
Dim CmdAsNew SqlCommand(MySQL, MyConn)
' Dim Cmd1 As New SqlCommand(MySQL1, MyConn)
MyConn.Open()
objDR = Cmd.ExecuteReader(System.Data.CommandBehavior.CloseConnection)
ddl.DataSource = objDR
ddl.DataValueField ="Subject"
ddl.DataTextField ="Subject"
ddl.DataBind()
MyConn.Close()
' MyConn.Open()
' ddlDir.DataSource = Cmd1.ExecuteReader(System.Data.CommandBehavior.CloseConnection)
'ddlDir.DataValueField = "Category"
' ddlDir.DataTextField = "Category"
' ddlDir.DataBind()
'MyConn.Close()
ddl.Items.Insert(0,"-- Choose --")
'ddlDir.Items.Insert(0, "-- Choose --")
EndIf
'ddl.Items.Insert(0, "-- Choose --")
EndSub
Sub fillModel(ByVal SourceAsObject,ByVal EAs EventArgs)
Dim strConnAsString ="server=LAPTOP;uid=sa;pwd=sa;database=NetG"
If ddl.SelectedItem.Text <>"-- Choose --"Then
sSubject = ddl.SelectedItem.Value
Dim MySQL1AsString ="Select DISTINCT Category from dbo_v_netG_courses where [Subject]=" &"'" & sSubject &"'"
Dim MyConnAsNew SqlConnection(strConn)
'Dim objDR As SqlDataReader
Dim Cmd1AsNew SqlCommand(MySQL1, MyConn)
MyConn.Open()
ddlDir.DataSource = Cmd1.ExecuteReader(System.Data.CommandBehavior.CloseConnection)
ddlDir.DataValueField ="Category"
ddlDir.DataTextField ="Category"
ddlDir.DataBind()
' ddl2.selectedindex=0
' tdmodel.visible = "true"
'lit1.text = "<b>Vehicle Type</b>: " & ddl1.selectedItem.text
' ddl2.items.insert(0, "-- Choose --")
' tdStyle.visible = "false"
MyConn.Close()
EndIf
ddlDir.Items.Insert(0,"-- Choose --")
EndSub
' Sub Page_Change(ByVal sender As Object, ByVal e As DataGridPageChangedEventArgs)
' MyDataGrid.CurrentPageIndex = e.NewPageIndex
' BindData()
'Sub GridOne(ByVal Source As Object, ByVal E As EventArgs)
' MyDataGrid.CurrentPageIndex = 0
'End Sub
'Sub GetData(ByVal Source As Object, ByVal E As EventArgs)
' BindData()
' End Sub
Sub BindData(ByVal SourceAsObject,ByVal EAs EventArgs)
sSubject = ddl.SelectedItem.Value
sCategory = ddlDir.SelectedItem.Value
Dim strConnAsString ="server=LAPTOP;uid=sa;pwd=sa;database=NetG"
If sSubject =""And sCategory =""Then
MySQL ="Select * from dbo_v_netG_courses"
ElseIf sSubject ="-- Choose --"And sCategory =""Then
MySQL ="Select * from dbo_v_netG_courses"
'Page.IsPostBack = True
Else
MySQL ="Select * from dbo_v_netG_courses where [Subject]=" &"'" & sSubject &"'" &" and [Category] =" &"'" & sCategory &"'"
Dim MyConnAsNew SqlConnection(strConn)
Dim dsAs DataSet =New DataSet()
Dim CmdAsNew SqlDataAdapter(MySQL, MyConn)
Cmd.Fill(ds,"dbo_v_netG_courses")
MyDataGrid.DataSource = ds.Tables("dbo_v_netG_courses").DefaultView
MyDataGrid.DataBind()
EndIf
EndSub
</script>
<html>
<head>
<metaname="GENERATOR"Content="ASP Express 3.0">
<title>Ad Hoc Sorting with a DataGrid</title>
</head>
<body>
<Formid="form1"runat="server">
<table>
<tr>
<tdalign="Left"valign="Top"><b><i>View Employee Data</i></b></td>
<tdalign="right"valign="Top">
Subject:<asp:dropdownlistid="ddl"
runat="server"
onselectedindexchanged="fillModel"AutoPostBack="True"
>
</asp:dropdownlist>
Category:<asp:dropdownlistid="ddlDir"runat="server"DataTextField="Model">
</asp:dropdownlist><br/>
<br/>
<asp:Buttonid="btn1"Text="View Records"onclick="BindData"runat="server"/><br/>
</td>
</tr>
<tr>
<tdalign="Left"valign="Top"Colspan="2">
<asp:Datagridrunat="server"
Id="MyDataGrid"
cellpadding="0"
Headerstyle-BackColor="#8080C0"
Headerstyle-Font-Bold="True"
Headerstyle-Font-Size="12"
BackColor="#8080FF"
Font-Size="10pt"
AlternatingItemStyle-BackColor="#EFEFEF"
AlternatingItemStyle-Font-Size="10"
BorderColor="Black"AllowSorting="True">
<AlternatingItemStyleBackColor="#EFEFEF"Font-Size="10pt"/>
<HeaderStyleBackColor="#8080C0"Font-Bold="True"Font-Size="12pt"/>
</asp:DataGrid><br> </td>
</tr>
</table>
</form>
</body>
</html>
|||I assume this is an .NET 1.1 application?
javawaba wrote:
