Help on DataSets

  • Thread starter Thread starter Dot Net Daddy
  • Start date Start date
D

Dot Net Daddy

Hello,

I am creating an application using asp.net 2.0. But I am stuck
somewhere. I want to get values from a DataSet one by one on every
Page_Load. So I wrote my code in Page_Load but it didnt work, giving a
warning. Here is my code:

Code: 
Protected Sub Page_Load(ByVal sender As Object, ByVal e As
System.EventArgs) Handles Me.Load
Dim ds As DataSet1
Dim test As String
test = ds.Tables("pictureID").Rows(0)("pictureID").ToString
Label1.Text = test
End Sub

And the Warning:

Variable 'ds' is used before it has been assigned a value. A null
reference exception could result at runtime.


How can I handle this warning. Did I wrote the code in wrong place?

I created my DataSet using the menu in Visual Web Developer (Visual
Studio 2005). So I did not write any code for it.

Am I assigning the ds right?
I also assigned it as DataSet1TableAdapter. But it didnt work also. I
am a rookie so any help is appreciated.
 
DotNetDaddy,

If you want to get individual results focus you than on the datatable. The
dataset is just a very extended wrapper arround that (and around the
relations to that).

Your error is because "ds" in your code is only a placeholder address for an
object which is not filled yet (Is Nothing). You have to set it to, to the
actual object as is created. (Or use that direct)

Cor
 
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