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Imports System.Data.SqlClient
Public Class Main
Protected WithEvents DataGridView1 As DataGridView
Dim instForm2 As New Exceptions
Private Sub Button1_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles startpayrollButton.Click
Dim ssql As String = "select MAX(payrolldate) AS [payrolldate], " & _
"dateadd(s, 518399, max(payrolldate)) AS [Sunday]" & _
"from dbo.payroll" & _
" where payrollran = 'no'"
Dim oCmd As System.Data.SqlClient.SqlCommand
Dim oDr As System.Data.SqlClient.SqlDataReader
oCmd = New System.Data.SqlClient.SqlCommand
Try
With oCmd
.Connection = New System.Data.SqlClient.SqlConnection("Initial Catalog=mdr;Data Source=xxxxx;uid=xxxxx;password=xxxxx")
.Connection.Open()
.CommandType = CommandType.Text
.CommandText = ssql
oDr = .ExecuteReader()
End With
If oDr.Read Then
payperiodstartdate = oDr.GetDateTime(1)
payperiodenddate = payperiodstartdate.AddDays(7)
Dim ButtonDialogResult As DialogResult
ButtonDialogResult = MessageBox.Show(" The Next Payroll Start Date is: " & payperiodstartdate.ToString() & System.Environment.NewLine & " Through End Date: " & payperiodenddate.ToString())
If ButtonDialogResult = Windows.Forms.DialogResult.OK Then
exceptionsButton.Enabled = True
startpayrollButton.Enabled = False
End If
End If
oDr.Close()
oCmd.Connection.Close()
Catch ex As Exception
MessageBox.Show(ex.Message)
oCmd.Connection.Close()
End Try
End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles exceptionsButton.Click
Dim connection As System.Data.SqlClient.SqlConnection
Dim adapter As System.Data.SqlClient.SqlDataAdapter = New System.Data.SqlClient.SqlDataAdapter
Dim connectionString As String = "Initial Catalog=mdr;Data Source=xxxxx;uid=xxxxx;password=xxxxx"
Dim ds As New DataSet
Dim _sql As String = "SELECT [Exceptions].Employeenumber,[Exceptions].exceptiondate, [Exceptions].starttime, [exceptions].endtime, [Exceptions].code, datediff(minute, starttime, endtime) as duration INTO scratchpad3" & _
" FROM Employees INNER JOIN Exceptions ON [Exceptions].EmployeeNumber = [Exceptions].Employeenumber" & _
" where [Exceptions].exceptiondate between @payperiodstartdate and @payperiodenddate" & _
" GROUP BY [Exceptions].Employeenumber, [Exceptions].Exceptiondate, [Exceptions].starttime, [exceptions].endtime," & _
" [Exceptions].code, [Exceptions].exceptiondate"
connection = New SqlConnection(connectionString)
Dim _CMD As SqlCommand = New SqlCommand(_sql, connection)
adapter.SelectCommand = _CMD
_CMD.Parameters.Add(New SqlClient.SqlParameter("@payperiodstartdate", payperiodstartdate))
_CMD.Parameters.Add(New SqlClient.SqlParameter("@payperiodenddate", payperiodenddate))
Try
adapter.Fill(ds)
If (ds Is Nothing) Then
'it's empty
MsgBox("There was no data for this time period, press Ok to continue", "No Data")
connection.Close()
Exceptions.Hide()
Else
'it exists and there are rows
adapter.Fill(ds)
connection.Close()
End If
Catch ex As Exception
MessageBox.Show(ex.ToString)
connection.Close()
End Try
Exceptions.Show()
End Sub
Private Sub DataGridView1_CellContentClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridView1.CellContentClick
End Sub
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
End Sub
End Class
and when I try to run this in debug, I get the error "NullReferenceException was unhandled." The error shows up in my disassembly but the line in the code where this is breaking is here:
adapter.SelectCommand = _CMD
can anyone offer any suggestions as to why this is failing?
Thank you
Doug
This post has been edited by dougancil2010: 21 January 2011 - 08:55 AM
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