好久没写过相关代码，今天又来贡献一篇 C# 使用 SapNwRfc 调用SAP RFC。用VS2022的WINFORM应用程序，使用NuGet中的SapNwRfc类库，call SAP系统中的RFC，传入7个参数，得到RFC返回的2张表的数据。

一、VS2022中新建WINFORM，Nuget中安装SapNwRfc组件。

二、WINFORM中，放两个LISTVIEW显示最后SAP返回的表数据

三、程序点击按钮，代码开一个单独线程处理CALL SAP的RFC，RFC运行后，返回2张表的数据，在LISTVIEW中显示出来。

四、SAP中的RFC定义：

表一结构：

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表二结构：

五、全部C#代码，用Listview显示数据也是很快的，只要使用好 listView1.BeginUpdate();和 listView1.EndUpdate();把他们放在循环填数的外面：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;
using SapNwRfc;namespace SAPRFC2024
{public partial class Form1 : Form{public Form1(){Control.CheckForIllegalCrossThreadCalls = false;InitializeComponent();var l1 = new ColumnHeader(); l1.Text = "Z_BOM_LINE";    l1.Width = 200;   listView1.Columns.Add(l1);var l2 = new ColumnHeader(); l2.Text = "TEXT";          l2.Width = 150;   listView1.Columns.Add(l2);var l3 = new ColumnHeader(); l3.Text = "MATNR";         l3.Width = 200;   listView1.Columns.Add(l3);var l4 = new ColumnHeader(); l4.Text = "QUANTITY";      l4.Width = 50;    listView1.Columns.Add(l4);var l5 = new ColumnHeader(); l5.Text = "MEIN";          l5.Width = 50;    listView1.Columns.Add(l5);var l6 = new ColumnHeader(); l6.Text = "WORKSTATION";   l6.Width = 200;   listView1.Columns.Add(l6);var l7 = new ColumnHeader(); l7.Text = "Z_TYPE";        l7.Width = 50;    listView1.Columns.Add(l7);var h1 = new ColumnHeader(); h1.Text = "MNAME";         h1.Width = 200; listView2.Columns.Add(h1);var h2 = new ColumnHeader(); h2.Text = "ATBEZ";         h2.Width = 150; listView2.Columns.Add(h2);var h3 = new ColumnHeader(); h3.Text = "MWERT";         h3.Width = 200; listView2.Columns.Add(h3);var h4 = new ColumnHeader(); h4.Text = "ATWTB";         h4.Width = 50;  listView2.Columns.Add(h4);}private void toolStripButton1_Click(object sender, EventArgs e){Thread lsThread = new Thread(new ThreadStart(callsap));lsThread.IsBackground = true;lsThread.Start();}void callsap(){string connectionString = "AppServerHost=10.XXX.XXX.XXX; SystemNumber=00; User=XXXXXX;Password=XXXXXX; Client=XXXX; Language=ZH; PoolSize=5; Trace=8";var connection = new SapConnection(connectionString);connection.Connect();toolStripStatusLabel1.Text = "Logon SAP Server...";var someFunction = connection.CreateFunction("ZSAP_CU50_OUT");var result = someFunction.Invoke<return_table>(new SomeFunctionParameters{WERKS = "XXXXX",MATNR = "XXXXX",BADAT = "20240126",PM = "XXXXX",CC = "CC12",PA = "PA60",PKG = "XXXXX",});toolStripStatusLabel1.Text = "BOM:" + result.Itemsa.Count().ToString() + " CFG:" + result.Itemsb.Count().ToString();listView1.BeginUpdate();listView2.BeginUpdate();foreach (var one in result.Itemsa){ListViewItem item = new ListViewItem(one.Z_BOM_LINE);item.SubItems.Add(one.TEXT);item.SubItems.Add(one.MATNR);item.SubItems.Add(one.QUANTITY);item.SubItems.Add(one.MEIN);item.SubItems.Add(one.WORKSTATION);item.SubItems.Add(one.Z_TYPE);listView1.Items.Add(item);                }foreach (var one in result.Itemsb){ListViewItem item = new ListViewItem(one.MNAME);item.SubItems.Add(one.ATBEZ);item.SubItems.Add(one.MWERT);item.SubItems.Add(one.ATWTB);listView2.Items.Add(item);}listView1.EndUpdate();listView2.EndUpdate();}}class return_table{[SapName("OT_BOM_LIST")]public TableAItem[] Itemsa { get; set; }[SapName("OT_BOM_CFG")]public TableBItem[] Itemsb { get; set; }}class TableAItem{[SapName("Z_BOM_LINE")]public string Z_BOM_LINE { get; set; }[SapName("TEXT")]public string TEXT { get; set; }[SapName("MATNR")]public string MATNR { get; set; }[SapName("QUANTITY")]public string QUANTITY { get; set; }[SapName("MEIN")]public string MEIN { get; set; }[SapName("WORKSTATION")]public string WORKSTATION { get; set; }[SapName("Z_TYPE")]public string Z_TYPE { get; set; }}class TableBItem{[SapName("MNAME")]public string MNAME { get; set; }[SapName("ATBEZ")]public string ATBEZ { get; set; }[SapName("MWERT")]public string MWERT { get; set; }[SapName("ATWTB")]public string ATWTB { get; set; }}class SomeFunctionParameters{[SapName("WERKS")]public string WERKS { get; set; }[SapName("MATNR")]public string MATNR { get; set; }[SapName("BADAT")]public string BADAT { get; set; }[SapName("PM")]public string PM { get; set; }[SapName("CC")]public string CC { get; set; }[SapName("PA")]public string PA { get; set; }[SapName("PKG")]public string PKG { get; set; }}}