一、 以lable為例：
 
 
 
        在Form中放一個(gè)控件，讓其在啟動(dòng)和動(dòng)態(tài)改變窗口大小時(shí)始終居中

            int gLeft = this.Width / 2 - lable1.Width / 2; //this指Form
            int gTop = this.Height / 2 - lable1.Height / 2;
 
            lable1.Location = new Point(gLeft, gTop);

   二、動(dòng)態(tài)創(chuàng)建控件并找到或者刪除控件
 
            1、 以Lable為例創(chuàng)建控件：
 
                        Label lbl = new Label();
                        lbl.Name = "lblNum" + m;
                        lbl.AutoSize = true;
                        lbl.BackColor = System.Drawing.Color.Transparent;
                        lbl.Font = new System.Drawing.Font("宋體", 36F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
                        lbl.ForeColor = System.Drawing.Color.White;
                        lbl.Location = new System.Drawing.Point(lable1.Location.X - 150, 29);
                        lbl.TextAlign = System.Drawing.ContentAlignment.TopCenter;
                        lbl.Anchor = System.Windows.Forms.AnchorStyles.Top;
                       // this.Controls.Add(lbl);窗體中添加控件
                        this.groupBox2.Controls.Add(lbl);//groupBox2中添加控件
 
              

            2、以Lable為例刪除控件：

            if (this.groupBox2.Controls.ContainsKey("lable2") == true)
            {
                this.groupBox2.Controls.RemoveByKey("lable2");
            }
 
 
 
 
 
 
 
       3、找到控件并對(duì)其賦值
 
 
 
 
 
             Control[] control = this.Controls.Find("lable1" ，true);
 
             if (control.Length == 1 && control[0] is Label)
              {
 
                    (control[0] as Label).Text =“hello”；
 
              }