怎样用代码添加一个windows控件？

[haitao5676]

我想用一个按钮来控制增加一个windows控件！
比如：
点击按钮后，自动添加一个下拉列表或标签

[hamadou]

dim txt as new system.windows.form.textbox()
txt.location=new system.drawing.point(50,50)
txt.size=new system.drawing.size(80,20)

[hamadou]

操作失误：呵呵
dim txt as new system.windows.form.textbox()
txt.location=new system.drawing.point(50,50)
txt.size=new system.drawing.size(80,20)
txt.name="aa"
txt.text="11"
me.controls.add(txt)

[yizhixiaozhu]

up

[我不懂电脑]

button3 = new System.Windows.Forms.Button();
button3.Location = new System.Drawing.Point(76, 104);
button3.Visible = true;
button3.Name = "button2";
button3.TabIndex = 2;
button3.Text = "button2";
button3.Click += new System.EventHandler(this.button1_Click);

this.Controls.Add(this.button3);

[haitao5676]

谢谢！