C#当窗体大小改变时，窗体中的控件大小也随之改变

╰半橙微兮° 2022-08-19 14:25 250阅读 0赞

[转自][Link 1]：http://www.cnblogs.com/slyzly/articles/1965965.html

第一种：推荐

在窗体中加上如下代码即可实现，但窗体点击放大按钮时却不能改变控件大小。

![复制代码][copycode.gif]

private  Size beforeResizeSize  =  Size.Empty;  
  
 protected override void  OnResizeBegin(EventArgs e)  
\{  
 base .OnResizeBegin(e);  
beforeResizeSize  = this .Size;  
\}  
 protected override void  OnResizeEnd(EventArgs e)  
\{  
 base .OnResizeEnd(e);  
 // 窗口resize之后的大小   
  Size endResizeSize  = this .Size;  
 // 获得变化比例   
  float  percentWidth  =  ( float )endResizeSize.Width  /  beforeResizeSize.Width;  
 float  percentHeight  =  ( float )endResizeSize.Height  /  beforeResizeSize.Height;  
 foreach  (Control control  in this .Controls)  
\{  
 if  (control  is  DataGridView)  
 continue ;  
 // 按比例改变控件大小   
  control.Width  =  ( int )(control.Width  \*  percentWidth);  
control.Height  =  ( int )(control.Height  \*  percentHeight);  
 // 为了不使控件之间覆盖 位置也要按比例变化   
  control.Left  =  ( int )(control.Left  \*  percentWidth);  
control.Top  =  ( int )(control.Top  \*  percentHeight);  
\}  
\}

![复制代码][copycode.gif]

第二种：效果很差

在加载事件中写 AutoScale(this);

![复制代码][copycode.gif]

// 设置窗口控件随窗口大小改变而改变   
 public new void  AutoScale(Form frm)  
\{  
frm.Tag  =  frm.Width.ToString()  \+ " , " \+  frm.Height.ToString();  
frm.SizeChanged  \+= new EventHandler(frm\_SizeChanged);  
\}  
 public void  frm\_SizeChanged( object  sender, EventArgs e)  
\{  
 string \[\] tmp  =  ((Form)sender).Tag.ToString().Split( ' , ' );  
 float  width  =  ( float )((Form)sender).Width  /  ( float )Convert.ToInt32(tmp\[ 0 \]);  
 float  height  =  ( float )((Form)sender).Height  /  ( float )Convert.ToInt32(tmp\[ 1 \]);  
((Form)sender).Tag  =  ((Form)sender).Width.ToString()  \+ " , " \+  ((Form)sender).Height;  
 string  str  =  ((Form)sender).Tag.ToString();  
 //  int font\_size = Int32.Parse(str.Substring(0, str.IndexOf(','))) / 100;

// 也可使字体随之改变   
  float  tempWidth = 0F;  
 float  tempHeight = 0F;  
 foreach  (Control control  in  ((Form)sender).Controls)  
\{  
 if  (control  is  DataGridView)  
 continue ;  
 if  (control  is  TextBox)  
\{  
tempHeight  =  height;  
tempWidth  = width;  
\}  
 if  (control  is  Button)  
\{  
 if  ( this .WindowState  ==  FormWindowState.Maximized)  
tempHeight  \-= 0.4F ;  
 else   
tempHeight  \+= 0.2F ;  
control.Scale( new  SizeF(tempWidth, tempHeight));  
\}  
 else   
\{  
control.Scale( new  SizeF(width, height));  
\}  
\}  
\}

![复制代码][copycode.gif]

第三种：[http://www.cnblogs.com/kenkao/archive/2008/11/10/1330623.html][http_www.cnblogs.com_kenkao_archive_2008_11_10_1330623.html]

![复制代码][copycode.gif]

using  System;  
 using  System.Collections.Generic;  
 using  System.ComponentModel;  
 using  System.Data;  
 using  System.Drawing;  
 using  System.Text;  
 using  System.Windows.Forms;  
 using  System.Collections;  
  
 namespace  WindowsApplication3  
\{  
 public partial class  Form1 : Form  
\{  
 /\* \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*设定程序中可能要用到的用以存储初始数据的动态数组及相关私有变量\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* \*/   
  
 private  ArrayList InitialCrl  = new  ArrayList(); // 用以存储窗体中所有的控件名称   
 private  ArrayList CrlLocationX  = new  ArrayList(); // 用以存储窗体中所有的控件原始位置   
 private  ArrayList CrlLocationY  = new  ArrayList(); // 用以存储窗体中所有的控件原始位置   
 private  ArrayList CrlSizeWidth  = new  ArrayList(); // 用以存储窗体中所有的控件原始的水平尺寸   
 private  ArrayList CrlSizeHeight  = new  ArrayList(); // 用以存储窗体中所有的控件原始的垂直尺寸   
 private int  FormSizeWidth; // 用以存储窗体原始的水平尺寸   
 private int  FormSizeHeight; // 用以存储窗体原始的垂直尺寸   
 private double  FormSizeChangedX; // 用以存储相关父窗体/容器的水平变化量   
 private double  FormSizeChangedY; // 用以存储相关父窗体/容器的垂直变化量    
 private int  Wcounter  = 0 ; // 为防止递归遍历控件时产生混乱，故专门设定一个全局计数器   
   
  
 public  Form1()  
\{  
InitializeComponent();  
\}  
  
 private void  Form1\_Load( object  sender, EventArgs e)  
\{  
GetInitialFormSize();  
 // this.AutoScroll = true;  
 // this.SetAutoSizeMode(FormSizeWidth,FormSizeHeight);  
 // this.AutoScrollMinSize.Width = FormSizeWidth;  
 // this.AutoScrollMinSize.Height = FormSizeHeight;   
 GetAllCrlLocation( this );  
GetAllCrlSize( this );  
\}  
 public void  GetAllCrlLocation(Control CrlContainer) // 获得并存储窗体中各控件的初始位置   
 \{  
 foreach  (Control iCrl  in  CrlContainer.Controls)  
\{  
 if  (iCrl.Controls.Count  > 0 )  
GetAllCrlLocation(iCrl);  
InitialCrl.Add(iCrl);  
CrlLocationX.Add(iCrl.Location.X);  
CrlLocationY.Add(iCrl.Location.Y);  
\}  
\}  
  
 public void  GetAllCrlSize(Control CrlContainer) // 获得并存储窗体中各控件的初始尺寸   
 \{  
 foreach  (Control iCrl  in  CrlContainer.Controls)  
\{  
 if  (iCrl.Controls.Count  > 0 )  
GetAllCrlSize(iCrl);  
CrlSizeWidth.Add(iCrl.Width);  
CrlSizeHeight.Add(iCrl.Height);  
\}  
\}  
  
 public void  GetInitialFormSize() // 获得并存储窗体的初始尺寸   
 \{  
FormSizeWidth  = this .Size.Width;  
FormSizeHeight  = this .Size.Height;  
\}  
  
 private void  Form1\_SizeChanged( object  sender, EventArgs e)  
\{  
 //  MessageBox.Show("窗体尺寸改变");   
 Wcounter  = 0 ;  
 int  counter  = 0 ;  
 if  ( this .Size.Width  <  FormSizeWidth  || this .Size.Height  <  FormSizeHeight)  
 // 如果窗体的大小在改变过程中小于窗体尺寸的初始值，则窗体中的各个控件自动重置为初始尺寸，且窗体自动添加滚动条   
 \{  
 foreach  (Control iniCrl  in  InitialCrl)  
\{  
iniCrl.Width  =  ( int )CrlSizeWidth\[counter\];  
iniCrl.Height  =  ( int )CrlSizeHeight\[counter\];  
Point point  = new  Point();  
point.X  =  ( int )CrlLocationX\[counter\];  
point.Y  =  ( int )CrlLocationY\[counter\];  
iniCrl.Bounds  = new  Rectangle(point, iniCrl.Size);  
counter \++ ;  
\}  
 this .AutoScroll  = true ;  
\}  
 else   
 // 否则，重新设定窗体中所有控件的大小（窗体内所有控件的大小随窗体大小的变化而变化）   
 \{  
 this .AutoScroll  = false ;  
ResetAllCrlState( this );  
\}  
\}  
  
 public void  ResetAllCrlState(Control CrlContainer) // 重新设定窗体中各控件的状态（在与原状态的对比中计算而来）   
 \{  
FormSizeChangedX  =  ( double ) this .Size.Width  /  ( double )FormSizeWidth;  
FormSizeChangedY  =  ( double ) this .Size.Height  /  ( double )FormSizeHeight;  
  
 foreach  (Control kCrl  in  CrlContainer.Controls)  
\{  
 /\* string name = kCrl.Name.ToString();  
MessageBox.Show(name);  
MessageBox.Show(Wcounter.ToString()); \*/   
 if  (kCrl.Controls.Count  > 0 )  
\{  
ResetAllCrlState(kCrl);  
\}  
Point point  = new  Point();  
point.X  =  ( int )(( int )CrlLocationX\[Wcounter\]  \*  FormSizeChangedX);  
point.Y  =  ( int )(( int )CrlLocationY\[Wcounter\]  \*  FormSizeChangedY);  
kCrl.Width  =  ( int )(( int )CrlSizeWidth\[Wcounter\]  \*  FormSizeChangedX);  
kCrl.Height  =  ( int )(( int )CrlSizeHeight\[Wcounter\]  \*  FormSizeChangedY);  
kCrl.Bounds  = new  Rectangle(point, kCrl.Size);  
Wcounter \++ ;  
\}  
\}  
\}  
\}

第四种：

## [C\#实现窗体控件随窗体大小改变(包括字体大小) 修正版][C_] ##

[http://www.cnblogs.com/jason-liu-blogs/archive/2012/10/28/2743243.html][C_]

![复制代码][copycode.gif]

private float X;
    
    private float Y;
    
    private void  setTag(Control cons)
            {
                foreach (Control con in cons.Controls)
                {
                    con.Tag = con.Width +":" + con.Height + ":" + con.Left + ":" + con.Top + ":" + con.Font.Size;
                    if (con.Controls.Count > 0)
                        setTag(con);                
                }
            }
            private void setControls(float   newx, float  newy, Control  cons)
            {
                foreach (Control  con in cons .Controls )
                {
    
                    string[] mytag = con.Tag.ToString().Split(new char[] { ':' });
                    float a = Convert.ToSingle(mytag[0]) * newx;
                    con.Width = (int)a;
                    a=Convert.ToSingle(mytag[1]) * newy;
                    con.Height = (int)(a);
                    a=Convert.ToSingle(mytag[2]) * newx;
                    con.Left = (int)(a);
                    a=Convert.ToSingle(mytag[3]) * newy;
                    con.Top = (int)(a);
                    Single currentSize = Convert.ToSingle (mytag[4]) * Math.Min(newx,newy);
                    con .Font =new Font (con.Font .Name ,currentSize,con.Font .Style ,con.Font .Unit );
                    if(con.Controls .Count >0)
                    {
                        setControls (newx ,newy ,con );
                    }
                }
    
            }
    
            void Form1_Resize(object sender, EventArgs e)
            {
                float  newx = (this.Width )/ X;
                float newy = this.Height / Y;
                setControls(newx, newy, this);
                this.Text = this.Width.ToString() +" "+ this.Height.ToString();
    
            }
    
     
    
    在Form_Load里面添加:  
    
    this.Resize += new EventHandler(Form1_Resize);    
      
    //X = this.Width;    
    //Y = this.Height;    
       
    
    setTag (this);  
    Form1_Resize(new object(),new EventArgs());//x,y可在实例化时赋值,最后这句是新加的，在MDI时有用

![复制代码][copycode.gif]

[Link 1]: http://www.cnblogs.com/slyzly/articles/1965965.html
[copycode.gif]: /images/20220731/2501ed76f48a4fe9829effd2e1ca9b3a.png
[http_www.cnblogs.com_kenkao_archive_2008_11_10_1330623.html]: http://www.cnblogs.com/kenkao/archive/2008/11/10/1330623.html
[C_]: http://www.cnblogs.com/jason-liu-blogs/archive/2012/10/28/2743243.html