in my asp.net+vb web i am using this code to bind data. it works fine.
Protected Sub DropDownList3_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles DropDownList3.SelectedIndexChanged
If DropDownList3.Text = "Please Select" Then
Page.ClientScript.RegisterStartupScript(Me.GetType, "Forms", "<script> alert('Please select a valid ID1 ... it can't be blank.........') </script>")
DropDownList3.Focus()
Exit Sub
End If
Dim connectString As String = "Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=C:\web\baiju.mdb"
Dim con As OleDbConnection = New OleDbConnection(connectString)
con.Open()
Dim qstr As String
qstr = "select * from Tak1 where id1=" + DropDownList3.Text + ";"
Dim OleDb As New OleDbDataAdapter(qstr, con)
Dim dt As New DataSet
OleDb.Fill(dt, "[Tak1]")
If dt.Tables("[Tak1]") IsNot Nothing AndAlso dt.Tables("[Tak1]").Rows.Count > 0 AndAlso (dt.Tables("[Tak1]").Rows(0).Item("Remarks_") Is System.DBNull.Value <> True) Then
addlrmk.Text = dt.Tables("[Tak1]").Rows(0).Item("Remarks_")
Else
addlrmk.Text = ""
End If
End Sub
i have alrady added this code.
If DropDownList3.Text = "Please Select" Then
Page.ClientScript.RegisterStartupScript(Me.GetType, "Forms", "<script> alert('Please select a valid ID1 ... it can't be blank.........') </script>")
DropDownList3.Focus()
Exit Sub
End If
still it gives eror as
No value given for one or more required parameters.
