上一篇简单写了vb6.0中访问SAP， 本篇用vb.net实现同样的功能，只是把读取出来的内容存放在数据库中，然后利用GridView显示出来。 当然可以直接存入DataTable或DataSet中直接显示出来。

以下见代码示例：

Imports System
Imports System.Collections.Generic
Imports System.ComponentModel
Imports System.Data
Imports System.Drawing
Imports System.Text
Imports System.Windows.Forms
Imports System.Data.OleDb
Imports System.Xml

Public Class SAPConn
    Public oFunction As Object      ' SAP Functions
    Public oConnection As Object    ' SAP oConnection

    Dim cmd As OleDbCommand
    Dim SqlAd As OleDbDataAdapter
    Dim sql As String

    '测试连接的代码

    Private Sub BtnConnn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnConnn.Click
        Try
            oFunction = CreateObject("SAP.Functions.unicode")
            oConnection = oFunction.Connection
            oConnection.User = "CRMDEV69"
            oConnection.Password = "654321"
            oConnection.System = "CD2"
            oConnection.ApplicationServer = "172.18.95.173"
            oConnection.SystemNumber = 7
            oConnection.Client = "164"
            oConnection.Language = "ZH"

            If oConnection.Logon(0, True) = True Then
                MsgBox("连接成功！")
            Else
                MsgBox("连接失败！")
            End If
        Catch ex As Exception
            MsgBox(ex.ToString(), MsgBoxStyle.Information, "提示")
            Return
        End Try
    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim GetCustomers As Object
        Dim Customers As Object
        Dim i As Integer
        Dim sqlstr As String = ""
        ' 通过RFC接口远程运行SAP内部函数ZCSMS_GET_HRINFO
        ' 赋要调用的SAP内建函数名
        Try
            GetCustomers = oFunction.Add("ZCSMS_GET_HRINFO")

           '设置输入参数并赋值
            GetCustomers.Exports("BEGDAFROM") = ""
            GetCustomers.Exports("BEGDATO") = ""
            GetCustomers.Exports("MILL") = "7960"
            GetCustomers.Exports("NUMBERFROM") = "0061500001"
            GetCustomers.Exports("NUMBERTO") = "0061500200"
            Customers = GetCustomers.Tables("THR")

            If GetCustomers.Call Then

               '循环插入到数据库表中
                For i = 1 To Customers.RowCount
                    sqlstr = "Insert into ghy_employee(MILL, PERNR, NAME1, STEXT) values ('" & Customers(i, "MILL") & "','" & Customers(i, "PERNR") & "','" & Customers(i, "NAME1") & "','" & Customers(i, "STEXT") & "' )"

                    Config.ExecAccess(sqlstr)
                Next i
                MsgBox("获取数据成功")
            Else
                MsgBox(" 搜索出错! 出错信息: " + GetCustomers.exception)
            End If
        Catch ex As Exception
            MsgBox(ex.ToString)
            Return
        End Try
      
    End Sub

    '通过GridView显示数据

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        sql = "select * from ghy_employee "
        SqlAd = New OleDbDataAdapter(sql, oConn)
        DS.Clear()

        If DS.Tables.Contains("ghy_employee") Then
            DS.Tables.Remove("ghy_employee")
        End If
        SqlAd.Fill(DS, "ghy_employee")
        DvInvoice.DataSource = DS.Tables("ghy_employee").DefaultView
        DvInvoice.Refresh()
        DvInvoice.ClearSelection()
        DvInvoice.Columns("MILL").HeaderText = "工厂"
        DvInvoice.Columns("PERNR").HeaderText = "员工编号"
        DvInvoice.Columns("NAME1").HeaderText = "员工姓名"
        DvInvoice.Columns("STEXT").HeaderText = "员工部门"
    End Sub
End Class

以上两种写法都是利用创建组件OCX的方式进行， 通过调用类的方法进行也可以实现。 缺点是中文无法正常显示。

下一篇文章将贴出C#的例子以研究。