C# 调用 SAP RFC 方法

添加SAP安装程序的四个dll文件引用：

Interop.SAPBAPIControlLib.dll
Interop.SAPFunctionsOCX.dll
Interop.SAPLogonCtrl.dll
Interop.SAPTableFactoryCtrl.dll

调用方法体：

private void GetMateriel()
{
string number = this.txtNumber.Text.Trim();
string desc = this.txtDesc.Text.Trim();

Config config = new Config();
SAPLogonCtrl.SAPLogonControlClass login = new SAPLogonCtrl.SAPLogonControlClass();

login.ApplicationServer = config.Server;
login.Client = config.Client;
login.Language = config.Language;
login.User = config.User;
login.Password = config.Password;
login.SystemNumber = config.Number;

SAPLogonCtrl.Connection conn = (SAPLogonCtrl.Connection)login.NewConnection();
DataSet ds = new DataSet();
DataTable table = new DataTable();
table.Columns.Add("Number", typeof(string));
table.Columns.Add("Desc1", typeof(string));
table.Columns.Add("Desc2", typeof(string));
table.Columns.Add("Desc3", typeof(string));
table.Columns.Add("Uint", typeof(string));

if (conn.Logon(0, true))
{
SAPFunctionsOCX.SAPFunctionsClass func = new SAPFunctionsOCX.SAPFunctionsClass();
func.Connection = conn;

SAPFunctionsOCX.IFunction ifunc = (SAPFunctionsOCX.IFunction)func.Add("Z_MATERIAL_APPLICATION"); //（Z_MATERIAL_APPLICATION） SAP RFC 名称

SAPFunctionsOCX.IParameter gclient = (SAPFunctionsOCX.IParameter)ifunc.get_Exports("I_WERKS"); //（I_WERKS）输入参数
gclient.Value = Factory; //（Factory）对参数赋值

SAPFunctionsOCX.IParameter matnr = (SAPFunctionsOCX.IParameter)ifunc.get_Exports("I_MATNR");
matnr.Value = number;

SAPFunctionsOCX.IParameter maktx = (SAPFunctionsOCX.IParameter)ifunc.get_Exports("I_MAKTX");
maktx.Value = desc;

ifunc.Call();
SAPTableFactoryCtrl.Tables tables = (SAPTableFactoryCtrl.Tables)ifunc.Tables;
SAPTableFactoryCtrl.Table ENQ = (SAPTableFactoryCtrl.Table)tables.get_Item("PO_TAB"); （PO_TAB）输出表名

for (int i = 1; i <= ENQ.RowCount; i++)
{
DataRow dr = table.NewRow();
dr[0] = ENQ.get_Cell(i, "MATNR");
dr[1] = ENQ.get_Cell(i, "MAKTX");
dr[2] = ENQ.get_Cell(i, "MAKTX2");
dr[3] = ENQ.get_Cell(i, "MAKTX3");
dr[4] = ENQ.get_Cell(i, "MEINS");
table.Rows.Add(dr);
}

ds.Tables.Add(table);
}
conn.Logoff();

this.Repeater1.DataSource = ds.Tables[0];
this.DataBind();
this.lblCount.Text = "共找到" + ds.Tables[0].Rows.Count.ToString() + "條記錄";
ScriptManager.RegisterStartupScript(btnSAP, this.GetType(), "", "$(document).ready( function (){ jQuery.page('page',10);} )", true);
}