C# MDI子窗体互相操作-白红宇

C# MDI子窗体互相操作

阅读量：4612 次

发布时间：2019-06-09

本文共 2748 字，大约阅读时间需要 9 分钟。

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.Threading.Tasks; 9 using System.Windows.Forms;10 11 namespace WindowsFormsApplication112 {13     public partial class Form1 : Form14     {15         private string name;16         public Form1()17         {18             InitializeComponent();19         }20 21         private void button1_Click(object sender, EventArgs e)22         {23             Form2 frm2 = new Form2();24             frm2.MdiParent = this;25             frm2.Show();26         }27 28         private void button2_Click(object sender, EventArgs e)29         {30             Form3 frm1 = new Form3();31             frm1.MdiParent = this;32             frm1.Show();33         }34         public event Action
     
       OnText;35         public void ToChangeText(string obj)36         {37             if (OnText != null)38             {39                 OnText(obj);}40         }41         private void Form1_Load(object sender, EventArgs e)42         {43 44         }45     }46 }

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.Threading.Tasks; 9 using System.Windows.Forms;10 11 namespace WindowsFormsApplication112 {13     public partial class Form2 : Form14     {15         public Form2()16         {17             InitializeComponent();18         }19 20         private void button1_Click(object sender, EventArgs e)21         {22             (this.ParentForm as Form1).ToChangeText("form2来的消息啊？");23         }24     }25 }

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.Threading.Tasks; 9 using System.Windows.Forms;10 11 namespace WindowsFormsApplication112 {13     public partial class Form3 : Form14     {15         public Form3()16         {17             InitializeComponent();18         }19 20         private void Form3_Load(object sender, EventArgs e)21         {22             MessageBox.Show(this.ParentForm.Name);23             (this.ParentForm as Form1).OnText += new Action
     
      (Form3_OnText);24         }25         private void Form3_FormClosed(object sender, FormClosedEventArgs e)26         {27             (this.ParentForm as Form1).OnText -= new Action
      
       (Form3_OnText);28         }29         void Form3_OnText(string obj)30         {31             textBox1.Text = textBox1.Text+obj;32         }33     }34 }

转载于:https://www.cnblogs.com/zhutiehan/p/5720403.html

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