C#Winform窗体中传值

在窗体Form2中定义公有属性Form2Value,获取和设置textBox1的文本值
并且还定义一个accept事件

public string Form2Value
{
     get
     {
          return this.textBox1.Text;
     }
     set
    {
         this.textBox1.Text = value;
    }
} 

public event EventHandler accept; 

private void button1_Click ( object sender , EventArgs e )
{
     if ( accept != null )
     {
          accept ( this , EventArgs.Empty ); //当窗体触发事件，传递自身引用
     }
} 

在窗体Form1中

Form2 f2 = new Form2 ( );
f2.accept += new EventHandler ( f2_accept );
f2.Show ( ); 

void f2_accept ( object sender , EventArgs e )
{
     //事件的接收者通过一个简单的类型转换得到Form2的引用
     Form2 f2 = (Form2) sender;
     //接收到Form2的textBox1.Text
     this.textBox1.Text = f2.Form2Value;
}