Form1窗体:
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void btn1_Click(object sender, EventArgs e)
{
Form2 f2 = new Form2(txt1.Text,DoSth);
f2.Show();
}
//把字符串变量的值赋值给文本框
public void DoSth(string msg)
{
txt1.Text = msg;
}
}
Form2窗体:
public delegate void MyDel(string str);
public partial class Form2 : Form
{
public Form2()
{
InitializeComponent();//初始化窗体的
}
private MyDel _mdl;
public Form2(string str,MyDel mdl):this()
{
textBox1.Text = str;
this._mdl = mdl;
}
private void button1_Click(object sender, EventArgs e)
{
//调用委托的时候 一定要先判断
if (this._mdl!=null)
{
this._mdl(textBox1.Text);
this.Close();
}
}
}
