c#中进行窗体传值，可以使用委托的方法。新建两个窗体form1和form2，
form1中有个label1和button1；
form2中有个textbox1和button1；
实现点击form2中的button1把form2中textbox1的值，传给form1中的label1；
具体代码如下：
在form1中：
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 WindowsFormsApp1 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { Form2 form2 = new Form2(showMsg); form2.Show(); } private void showMsg(string str) { label1.Text = str; } private void Form1_Load(object sender, EventArgs e) { } } }
在form2中
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 WindowsFormsApp1 { public delegate void DelText(string str); public partial class Form2 : Form { public DelText _del; public Form2(DelText del) { this._del = del; InitializeComponent(); } private void Form2_Load(object sender, EventArgs e) { } private void button1_Click(object sender, EventArgs e) { this._del(textBox1.Text); } } }
原文：https://www.cnblogs.com/xifengmo/p/11032572.html
