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; }
    }

}