Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

How to bind one field of a DataSet to a DropDownList

Posted on 2008-10-07
8
Medium Priority
?
285 Views
Last Modified: 2010-04-14
I have a class that calls a stored procedure and returns a DataSet.  The DataSet has three columns.  How do I bind all the values of one particular field from the DataSet to a DropDownList?  I have the DropDownList coded on my ASP Page and I call the class from the VB page, but I'm not sure how to do this.

This is what I have, but it throws an error:
ASP:
<asp:DropDownList ID="ddlEntity" runat="server" DataValueField='<%# Bind("ENTITYID") %>'></asp:DropDownList>

VB:
        Dim myBL As New LIDBusinessLogic(System.Web.Configuration.WebConfigurationManager.ConnectionStrings("connectionstring_2").ConnectionString)
        Me.ddlEntity.DataSource = myBL.LOCXLATDS()
        Me.ddlEntity.DataValueField = "ENTITYID"
        Me.ddlEntity.DataBind()
0
Comment
Question by:nightshadz
  • 4
  • 4
8 Comments
 
LVL 96

Expert Comment

by:Bob Learned
ID: 22663689
<asp:DropDownList ID="ddlEntity" runat="server" SelectedValue='<%# Bind("ENTITYID") %>'></asp:DropDownList>

 Dim myBL As New LIDBusinessLogic(System.Web.Configuration.WebConfigurationManager.ConnectionStrings("connectionstring_2").ConnectionString)
        Me.ddlEntity.DataSource = myBL.LOCXLATDS()
        Me.ddlEntity.DataTextField = "ENTITYNAME"
        Me.ddlEntity.DataValueField = "ENTITYID"
        Me.ddlEntity.DataBind()

0
 

Author Comment

by:nightshadz
ID: 22668792
Thanks for the quick response!

The program still crashes on the DataBind method.  The three fields the DataSet returns are:
LOCATION1 VARCHAR(100)
LOCATIONID INTEGER
ENTITYID VARCHAR(15)

I figured the problem is with Me.ddlEntity.DataTextField = "ENTITYNAME.  I tried changing it to ENTITYID, commenting it out, but neither worked.
0
 
LVL 96

Expert Comment

by:Bob Learned
ID: 22675011
How are you data-binding the DropDownList?
0
Concerto Cloud for Software Providers & ISVs

Can Concerto Cloud Services help you focus on evolving your application offerings, while delivering the best cloud experience to your customers? From DevOps to revenue models and customer support, the answer is yes!

Learn how Concerto can help you.

 

Author Comment

by:nightshadz
ID: 22678023
Via the code in my original post.  There's a class that calls a stored procedure which returns a DataSet of the three columns I listed above.
0
 

Author Comment

by:nightshadz
ID: 22678234
Just to add on to what I wrote above, I updated the code in my original post to what you had given me.

Here is the code which returns the DataSet I mentioned above:
        Try
            Dim myDA As New SqlDataAdapter
            Dim myDS As New DataSet
            Me.cmd.Connection = Me.cn
            Me.cmd.CommandText = Me.mySQL
            Me.cmd.CommandType = CommandType.StoredProcedure
            Me.cmd.CommandTimeout = 30
            myDA.SelectCommand = Me.cmd
            Me.cn.Open()
            myDA.Fill(myDS)
            Return myDS
        Catch ex As Exception
            Throw
        Finally
            Me.cn.Close()
        End Try
0
 
LVL 96

Expert Comment

by:Bob Learned
ID: 22680071
1) What does 'mySQL' equal?

2) What columns to you get in the DataTable?

3) That could be simplified:


Dim dt As New DataTable()
Using adapter As New SqlDataAdapter(procedureName, connectionString)
   adapter.SelectCommand.CommandType = CommandType.StoredProcedure
   adapter.Fill(dt)
End Using

Open in new window

0
 

Author Comment

by:nightshadz
ID: 22680374
It's just running a stored procedure and returning a DataSet with these fields:

LOCATION1 VARCHAR(100)
LOCATIONID INTEGER
ENTITYID VARCHAR(15)

ENTITYID is what I want populated in the DropDownList.
0
 
LVL 96

Accepted Solution

by:
Bob Learned earned 2000 total points
ID: 22681298
Then, you shouldn't be having those problems.  Because you are, it is my assumption that you are not getting the correct columns, or you are not binding to the DropDownList correctly.  Another thing to check would be that you are using the correct AccessDataSource.
0

Featured Post

Concerto Cloud for Software Providers & ISVs

Can Concerto Cloud Services help you focus on evolving your application offerings, while delivering the best cloud experience to your customers? From DevOps to revenue models and customer support, the answer is yes!

Learn how Concerto can help you.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

The ECB site provides FX rates for major currencies since its inception in 1999 in the form of an XML feed. The files have the following format (reducted for brevity) (CODE) There are three files available HERE (http://www.ecb.europa.eu/stats/exch…
If you need to start windows update installation remotely or as a scheduled task you will find this very helpful.
Want to learn how to record your desktop screen without having to use an outside camera. Click on this video and learn how to use the cool google extension called "Screencastify"! Step 1: Open a new google tab Step 2: Go to the left hand upper corn…
Please read the paragraph below before following the instructions in the video — there are important caveats in the paragraph that I did not mention in the video. If your PaperPort 12 or PaperPort 14 is failing to start, or crashing, or hanging, …
Suggested Courses

926 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question