Winform中利用委托实现窗体之间的传值

 1 public partial class Form1 : Form 2     { 3         public Form1() 4         { 5             InitializeComponent(); 6         } 7  8         public void getValue(string strV) 9         {10             this.textBox1.Text = strV;11         }12 13         private void button1_Click(object sender, EventArgs e)14         {15             Form2 frm = new Form2();16             //frm.fatherform = this;//将当前窗体赋给fatherform17             //frm.getTextHandler += new Form2.GetTextHandler(getValue);//给事件赋值（注意：GetText方法的参数必须与GetTextHandler委托的参数一样，方可委托）18             frm.getTextHandler = getValue;//将方法赋给委托对象19             frm.ShowDialog();20         }21     }

 1 public partial class Form2 : Form 2     { 3         public Form2() 4         { 5             InitializeComponent(); 6         } 7         //public Form1 fatherform; 8  9         public delegate void GetTextHandler(string text);//声明委托10        // public event GetTextHandler getTextHandler = null;//定义委托事件11        public  GetTextHandler getTextHandler;//委托对象12         private void button1_Click(object sender, EventArgs e)13         {14             //if (fatherform != null)15             //{16             //    fatherform.getValue(this.textBox1.Text.Trim());17             //    this.Close();18             //}19             if (getTextHandler != null)20             {21                 getTextHandler(this.textBox1.Text.Trim());22                 this.Close();23             }24         }25     }