https://www.heckjj.com/index.php zh-cn https://www.heckjj.com/winform-csharp-refresh-MDIForm/ Heck <@hecks.tk> Fri, 10 Sep 2010 07:17:04 +0000 https://www.heckjj.com/winform-csharp-refresh-MDIForm/ 在c# winform中用子窗体刷新父窗体,子窗体改变父窗体控件的值有几种方法，下面我们来看用第一种方法:
用委托,Form2和Form3是同一组
Form2
using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; namespace TestMouseMove {     public delegate void SetVisiableHandler();     public partial class Form2 : Form     {         public Form2()         {             InitializeComponent();         }         private void button1_Click(object sender, EventArgs e)         {             Form3 frm = new Form3(new SetVisiableHandler(SetVisiable));             frm.Show();         }         private void SetVisiable()         {             SetVisiable(this.label1, !this.label1.Visible);         }         private void SetVisiable(Control control, bool visiable)         {             if (this.Controls.Contains(control))             {                 control.Visible = visiable;             }         }     } }
Form3
using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; namespace TestMouseMove {     public partial class Form3 : Form     {         private SetVisiableHandler m_setVisible;         public Form3(SetVisiableHandler setvisible)         {             InitializeComponent();             this.m_setVisible = setvisible;         }         private void btnVisible_Click(object sender, EventArgs e)         {             if (this.m_setVisible != null)             {                 this.m_setVisible();             }         }     } }
接下来我们看第二种方法:
用变量,Form4和Form5是同一组
Form4
using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; namespace TestMouseMove {     public partial class Form4 : Form     {         public Form4()         {             InitializeComponent();         }         #region 子窗口刷新父窗口的值         private string strLabel1 = "";         public string StrLabel1         {             get             {                 return strLabel1;             }             set             {                 strLabel1 = value;                 this.label1.Text = strLabel1;             }         }         #endregion         private void button1_Click(object sender, EventArgs e)         {             Form5 form5 = new Form5(this);//这里注意传个this             form5.Show();         }     } }
Form5
using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; namespace TestMouseMove {     public partial class Form5 : Form     {         Form4 form4 = new Form4();         public Form5(Form4 formFrm)//这个构造方法里有参数         {             form4 = formFrm; //这个必须要有             InitializeComponent();         }                private void button1_Click(object sender, EventArgs e)         {             form4.StrLabel1 = this.textBox1.Text;         }     } }
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Tags - c# , winform , 子窗体 , 刷新 , 父窗体 , 控件 , 值 ]]> https://www.heckjj.com/winform-csharp-refresh-MDIForm/#blogcomment <user@domain.com> Thu, 01 Jan 1970 00:00:00 +0000 https://www.heckjj.com/winform-csharp-refresh-MDIForm/#blogcomment