【抽奖系统】-窗体控件跟随窗体的大小而变化-源码

namespace AutoFormChange
{
public partial class Form1 : Form
{
private float X, Y;
public Form1()
{
InitializeComponent();
}

private void Form1_Load(object sender, EventArgs e)
{
addDgv();

this.Resize += new EventHandler(Form1_Resize);//执行Form1_Resize方法
X = this.Width;
Y = this.Height;
setTag(this);

}

public void addDgv()
{
DataTable table = new DataTable();
table.Columns.Add("序号", Type.GetType("System.String"));
table.Columns.Add("姓名", Type.GetType("System.String"));

DataRow row = table.NewRow();
row[0] = "1";
row[1] = "张三";
table.Rows.Add(row);
dataGridView1.DataSource = table;
dataGridView1.Columns[0].Width = 160;
dataGridView1.Columns[1].Width = 340;
}

private void Form1_Resize(object sender, EventArgs e)
{
float newx = (this.Width) / X;//当前宽度与变化前宽度之比
float newy = this.Height / Y;//当前高度与变化前宽度之比
setControls(newx, newy, this);
this.Text = this.Width.ToString() + " " + this.Height.ToString();  //窗体标题显示长度和宽度
}

private void setControls(float newx, float newy, Control cons)//实现控件以及字体的缩放
{
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]) * newy;
con.Font = new Font(con.Font.Name, currentSize, con.Font.Style, con.Font.Unit);
if (con.Controls.Count > 0)
{
setControls(newx, newy, con);//递归
}
}
}

//获得控件的长度、宽度、位置、字体大小的数据
private void setTag(Control cons)//Control类，定义控件的基类
{
foreach (Control con in cons.Controls)
{
con.Tag = con.Width + ":" + con.Height + ":" + con.Left + ":" + con.Top + ":" + con.Font.Size;//获取或设置包含有关控件的数据的对象
if (con.Controls.Count > 0)
setTag(con);//递归算法
}
}
}
}