The DataSourceID of 'ddlDevice' must be the ID of a control of type IDataSource. 'dsMain' is not an IDataSource.
I seem to be having trouble binding the objects in my page to the datasource. The subject line contains the error message that I keep receiving. I am trying to bind a dropdownlist with my datasource. I noticed that if I click on the droplist, go to the properties window and try to select a datasource; nothing is listed.
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jarnold646
8/30/2005 6:55:02 PM
asp.net.web-forms
93655 articles. 
6 followers.
7 Replies
1204 Views
Post the code for filling dsMain
NC...
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NC01
8/30/2005 7:40:21 PM
How did you setup the datasrouce?
I think you didnt use the wizard to connect into database. You will not see any datasrouce in the properties window till u use the wizard to (server explorer) create the database connection and dataadapter + dataset
regards
HTH
ASP.NET Hosting (HostingFest)
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smiling4ever
8/30/2005 8:52:05 PM
What kind of datasource are you using, and have you established a connection to it yet? Do you have a dataadapter object?
smtraber
Victory is mine!!
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smtraber
8/31/2005 8:21:04 AM
Here is the code, I am trying to use "SqlDatasourceControl-dsMain." Thank you for your response.
<%@ Page Language="vb" %>
<%@ Register TagPrefix="wmx" Namespace="Microsoft.Matrix.Framework.Web.UI" Assembly="Microsoft.Matrix.Framework, Version=0.6.0.0, Culture=neutral, PublicKeyToken=6f763c9966660626" %>
<%@ import Namespace="System.Data" %>
<%@ import Namespace="System.Data.SqlClient" %>
<script runat="server">
Function GetDevice() As System.Data.DataSet
Dim connectionString As String = "server='(local)'; trusted_connection=true; database='master'"
Dim dbConnection As System.Data.IDbConnection = New System.Data.SqlClient.SqlConnection(connectionString)
Dim queryString As String = "SELECT [main].[id], [main].[device] FROM [main]"
Dim dbCommand As System.Data.IDbCommand = New System.Data.SqlClient.SqlCommand
dbCommand.CommandText = queryString
dbCommand.Connection = dbConnection
Dim dataAdapter As System.Data.IDbDataAdapter = New System.Data.SqlClient.SqlDataAdapter
dataAdapter.SelectCommand = dbCommand
Dim dataSet As System.Data.DataSet = New System.Data.DataSet
dataAdapter.Fill(dataSet)
Return dataSet
End Function
Sub Page_Load(Sender As Object, E As EventArgs)
GetDevice()
If Not Page.IsPostBack Then
ddlDevice.DataTextField = "device"
ddlDevice.DataSource = dsMain
ddlDevice.DataBind()
End If
End Sub
Sub ddlDevice_SelectedIndexChanged(sender As Object, e As EventArgs)
dim myDs as new system.data.dataset
'myDs = GetDevice(ddlDevice.SelectedIndex)
DataList1.DataBind()
End Sub
Sub DataList1_SelectedIndexChanged(sender As Object, e As EventArgs)
End Sub
</script>
<html>
<head>
</head>
<body>
<asp:DropDownList id="ddlDevice" AutoPostBack="True" OnSelectedIndexChanged="ddlDevice_SelectedIndexChanged" DataSourceID="dsMain" Width="241px" runat="server"></asp:DropDownList>
<wmx:SqlDataSourceControl id="dsMain" runat="server" DeleteCommand="" UpdateCommand="" SelectCommand="SELECT * FROM [main]" ConnectionString="server='(local)'; trusted_connection=true; database='master'"></wmx:SqlDataSourceControl>
<asp:DataList id="DataList1" OnSelectedIndexChanged="DataList1_SelectedIndexChanged" runat="server" BorderStyle="Solid" BackColor="#C0C0FF" BorderColor="Black">
<HeaderTemplate>
<p>
Device ID:<asp:Label id="lblDevice" runat="server"></asp:Label>
</p>
<p>
Username:<asp:Label id="lblUser" runat="server" text="Label"></asp:Label>
</p>
<p>
Password:<asp:Label id="lblPass" runat="server" text="Label"></asp:Label>
</p>
<p>
URL:<asp:Label id="lblURL" runat="server" text="Label"></asp:Label>
</p>
</HeaderTemplate>
</asp:DataList>
</body>
</html>
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jarnold646
8/31/2005 1:22:25 PM
I know that in Visual Studio .net you can open the solution explorer, select a connection and drag tables into the application or class module. However, I am trying to create these pages using ASP.net Web Matrix. Which seems to work differently. Thank you for your response.
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jarnold646
8/31/2005 1:32:03 PM
Add outside of any method:
Dim dsMain As System.Data.DataSet = New System.Data.DataSet("dsMain")
and change your Page_Load event handler to:
Sub Page_Load(Sender As Object, E As EventArgs)
dsMain = GetDevice()
...
Now try it.
NC...
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NC01
8/31/2005 2:06:13 PM
It works! Thanks! I figured that all the coding needed was in the function. Anyway, thanks again.
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jarnold646
8/31/2005 2:40:02 PM
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Web resources about - The DataSourceID of 'ddlDevice' must be the ID of a control of type IDataSource. 'dsMain' is not an IDataSource. - asp.net.web-formsResources last updated: 2/3/2016 1:00:14 PM