C#实现winform用子窗体刷新父窗体及子窗体改变父窗体控件值的方法

本文实例讲述了c#实现winform用子窗体刷新父窗体及子窗体改变父窗体控件值的方法。分享给大家供大家参考。具体如下：

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(); 
      } 
    } 
  } 
} 

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; 
    } 
  } 
}

希望本文所述对大家的c#程序设计有所帮助。