窗体间传值（委托）

 1 using System;
 2 using System.Collections.Generic;
 3 using System.ComponentModel;
 4 using System.Data;
 5 using System.Drawing;
 6 using System.Linq;
 7 using System.Text;
 8 using System.Windows.Forms;
 9 
10 namespace 窗体传值_委托_
11 {
12     //设置给 文本框赋值方法 的委托
13     public delegate void setTextBox1ValueDel(string str);
14 
15     public partial class Form1 : Form
16     {
17         public Form1()
18         {
19             InitializeComponent();
20         }
21 
22         //设置文本框的text
23         private void SetTextBox1Value(string str)
24         {
25             this.textBox1.Text = str;
26         }
27 
28         //打开Form2
29         private void btnOpenForm2_Click(object sender, EventArgs e)
30         {
31             Form2 frm = new Form2(SetTextBox1Value);
32             frm.ShowDialog();
33         }
34     }
35 }

 1 using System;
 2 using System.Collections.Generic;
 3 using System.ComponentModel;
 4 using System.Data;
 5 using System.Drawing;
 6 using System.Linq;
 7 using System.Text;
 8 using System.Windows.Forms;
 9 
10 namespace 窗体传值_委托_
11 {
12     public partial class Form2 : Form
13     {
14 
15         // 文本框赋值方法 的委托属性
16         private setTextBox1ValueDel _setTextBox1ValueDel;
17 
18         public Form2(setTextBox1ValueDel del )
19         {
20             InitializeComponent();
21             this._setTextBox1ValueDel = del;
22         }
23 
24         //发送
25         private void btnSend_Click(object sender, EventArgs e)
26         {
27             _setTextBox1ValueDel(this.textBox1.Text);
28         }
29     }
30 }