//窗體1的代碼using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows.Forms; namespace WindowsFormsApplication1{  public partial class Form1 : Form  {    public Form1()    {      InitializeComponent();    }         private void button1_Click(object sender, EventArgs e)    {      sharedclass.sharedvalue = textBox1.Text.ToString(); //靜態變量的用法：類名.變量名 賦值給靜態變量      Form2 frm2 = new Form2();      frm2.Show();         }  }  public static class sharedclass //在命名空間設置一個靜態類sharedclass，不要放置在form1前面  {    public static string sharedvalue; //設置一個靜態變量sharedvalue  }}

//窗體2的代碼using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows.Forms; namespace WindowsFormsApplication1{  public partial class Form2 : Form  {    public Form2()    {      InitializeComponent();      textBox1.Text = sharedclass.sharedvalue; //靜態變量傳入給窗口2的textBox    }  }}