Imports ERPConnect
Public Class ClassSAP
    Private Shared SAPConnectionString
    Public Shared Function ConnectionInit(Host As String, SysNumber As String, Username As String, PW As String, Client As String, Lang As String)
        Try
            If LogErrorsOnly = False Then ClassLogger.Add("", False)
            If LogErrorsOnly = False Then ClassLogger.Add(">> SAP Connect started:", False)
            SAPConnectionString = String.Format("USER={0} LANG={1} CLIENT={2} SYSNR={3} ASHOST={4} PASSWD={5}", Username, Lang, Client, SysNumber, Host, PW)
            Dim con As New R3Connection()
            ERPConnect.LIC.SetLic("W86DWC992C")
            If LogErrorsOnly = False Then ClassLogger.Add(">> " & SAPConnectionString, False)
            con.Open(SAPConnectionString)
            If LogErrorsOnly = False Then ClassLogger.Add(">> SAP-Connection created!", False)
            If LogErrorsOnly = False Then ClassLogger.Add("", False)
            Return True
        Catch ex As Exception
            ClassLogger.Add("Error in SAP ConnectionInit: " & ex.Message, True)
            Return False
        End Try
    End Function
    Public Shared Function FuBa_Returndatatable_Seperated(FuBaName As String, SplitCharacter As String, Optional RowLimit As Integer = 0)
        Try
            Dim SAPCon As New R3Connection()
            SAPCon.Open(SAPConnectionString)
            Dim RESULT_TABLE As DataTable = New DataTable

            If LogErrorsOnly = False Then ClassLogger.Add(" >> Get data from FuBa-Function", False)
            Dim func As RFCFunction
            Try
                func = SAPCon.CreateFunction(FuBaName)
                If LogErrorsOnly = False Then ClassLogger.Add(" >> func.Execute", False)
                func.Execute()
                If LogErrorsOnly = False Then ClassLogger.Add(" >> function was executed", False)
            Catch ex As Exception
                ClassLogger.Add(">> Unexpected Error in Create SAP Function: " & ex.Message, False)
                MsgBox("Error in Create SAP Function: " & ex.Message, MsgBoxStyle.Critical)
                Return Nothing
            End Try
            Dim FUNCT_ROW_COUNT As Integer = 1
            Dim RowMaskresult As String = ""
            Try
                If LogErrorsOnly = False Then ClassLogger.Add(" >> Checking FunctionExecute", False)
                'Den ersten Wert ausgeben lassen um die Spalten zu splitten

                For Each row As RFCStructure In func.Tables("T_INDEX").Rows
                    Try
                        If row.Item(1).ToString.Contains(SplitCharacter) Then
                            RowMaskresult = row.Item(1).ToString
                            If LogErrorsOnly = False Then ClassLogger.Add(" >> RowMask result: " & RowMaskresult, False)
                            FUNCT_ROW_COUNT = 2
                        End If
                    Catch ex As Exception
                        RowMaskresult = "ErrorInGetSeperatedResult: " & ex.Message
                    End Try
                    If FUNCT_ROW_COUNT = 2 Then Exit For
                Next
            Catch ex As Exception
                ClassLogger.Add(">> Unexpected Error in Checking FunctionExecute: " & ex.Message, False)
                MsgBox("Error in Checking FunctionExecute: " & ex.Message, MsgBoxStyle.Critical)
                SAPCon.Close()
                Return Nothing
            End Try
            FUNCT_ROW_COUNT = 1
            Dim ColCount As Integer
            If SplitCharacter <> "" And RowMaskresult.Contains(SplitCharacter) Then
                Try
                    If LogErrorsOnly = False Then ClassLogger.Add(" >> Define Datatable with SplitCharacter method", False)
                    Dim split() = RowMaskresult.Split(SplitCharacter)
                    If split.Length > 0 Then
                        ColCount = split.Length - 1
                        CURRENT_COL_COUNT = ColCount
                        If LogErrorsOnly = False Then
                            ClassLogger.Add(" >> ColCount: " & ColCount.ToString, False)
                            ClassLogger.Add(" >> Split-Results: ", False)
                            For Each s As String In split
                                ClassLogger.Add("  # " & s, False)
                            Next
                        End If
                        For x = 0 To ColCount
                            ' Declare DataColumn and DataRow variables.
                            Dim column As DataColumn
                            column = New DataColumn()
                            column = New DataColumn()
                            column.DataType = Type.GetType("System.String")
                            column.ColumnName = "Column " & x.ToString
                            RESULT_TABLE.Columns.Add(column)
                        Next
                        If LogErrorsOnly = False Then ClassLogger.Add(" >> Datatable Columns after Split created", False)
                        ' Create new DataRow objects and add to DataTable.   
                        'Jetzt die Zeilen der Function durchlaufen
                        For Each row As RFCStructure In func.Tables("T_INDEX").Rows
                            Dim new_row As DataRow
                            If RowLimit <> 0 Then
                                If RowLimit = FUNCT_ROW_COUNT Then
                                    If LogErrorsOnly = False Then ClassLogger.Add(" >> RowCount limited to" & RowLimit.ToString & " rows. Exit SAP Function", False)
                                    Exit For
                                End If
                            End If
                            new_row = RESULT_TABLE.NewRow()
                            Dim Rowresult As String = row.Item(1).ToString
                            If Rowresult.Contains(SplitCharacter) Then
                                Dim RowSplit() = Rowresult.Split(SplitCharacter)
                                Dim col_index = 0
                                'Jetzt die Spaltenwerte in die NewRow eintragen
                                For x = 0 To ColCount
                                    new_row(x) = RowSplit(x)
                                Next
                                FUNCT_ROW_COUNT += 1
                                RESULT_TABLE.Rows.Add(new_row)
                            End If
                        Next
                        If LogErrorsOnly = False Then ClassLogger.Add(" >> RowCount FuBa: " & RESULT_TABLE.Rows.Count.ToString, False)
                        Return RESULT_TABLE
                    Else
                        Return Nothing
                    End If
                Catch ex As Exception
                    ClassLogger.Add(">> Unexpected Error in Create Datatable with split-method: " & ex.Message, False)
                    MsgBox("Unexpected Error in Create Datatable with split-method: " & ex.Message, MsgBoxStyle.Critical)
                    SAPCon.Close()
                    Return Nothing
                End Try
            Else
                Return Nothing
            End If
        Catch ex As Exception
            ClassLogger.Add(">> Unexpected Error in Function FuBa_ReturnDatatable Seperated: " & ex.Message, False)
            MsgBox("Unexpected Error in Function FuBa_ReturnDatatable Seperated: " & ex.Message, MsgBoxStyle.Critical)
            Return Nothing
        End Try
    End Function
End Class