asp.net dataset xsd error : variable is used before it has been assigned a value
<p>I am using visual studio vb asp.net, i am trying to use dataset.xsd. but i am getting error.
It is showing error , that ABC variable is used before it has been assigned a value a null reference exception could result at the runtime</p>

<p>in my program i have loginDataSet.xsd  > uloginDS</p>

<p>this is the coding</p>

<pre><code>Protected Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click

    Dim uloginAdapter1 As New loginDataSetTableAdapters.uLoginDSTableAdapter
    Dim ds1 As loginDataSet.uLoginDSDataTable
    Dim abc As loginDataSet.uLoginDSRow
    ds1 = uloginAdapter1.GetData()

    Dim k As String = abc.uName
    txtUserPassword.Text = k

End Sub
</code></pre>

<p>This video shows how to work with dataset design and it has more parts.
it is a youtube video link.</p>

<p><a href="http://www.youtube.com/watch?v=sIgKuATsb-E" rel="nofollow">http://www.youtube.com/watch?v=sIgKuATsb-E</a></p>

<p>But this video not shows how to read 1 row or 1 data entry.
i try some coding but getting a error</p>
