how to display data in textboxes ?

From: chris (chris_at_discussions.microsoft.com)
Date: 07/08/04 

Date: Wed, 7 Jul 2004 17:58:01 -0700

i'm trying to display the data into the textboxes when the user enters the appropriate id in the search textfield, however, it keeps on displaying an error message such as the following on my pocket pc

An unhandled exception of type 'System.ArgumentNullException' occurred in System.Windows.Forms.dll

Additional information: ArgumentNullException...

My codes are such as below.My web services was ok..when i enter the number, it works fine..
Private Sub Search2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Search2.Click
        Dim sID As Integer
        sID = Convert.ToInt32(TextBox1.Text)
        Dim ws As New servername.Service1
        Dim ds As DataSet = ws.GetJobID(sID)
        Dim dt As DataTable = ds.Tables("Jobs")
        TextBox2.DataBindings.Add("Text", dt, "JobID")
        TextBox3.DataBindings.Add("Text", dt, "JobNumber")
        TextBox4.DataBindings.Add("Text", dt, "JobName")
    End Sub

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