新人求帮助 为什么没有显示

问题描述

namespaceWindowsFormsApplication1{publicpartialclassForm1:Form{Graphicsg;Rectanglere;Penmypen=newPen(Color.Red,5);publicForm1(){InitializeComponent();g=this.CreateGraphics();re=newRectangle(50,50,50,50);}publicvoidPaint(objectsender,PaintEventArgse){g.DrawRectangle(mypen,re);}}}

解决方案

解决方案二：
你的Paint方法跟Form的Paint事件绑定了么？this.Paint+=newSystem.Windows.Forms.PaintEventHandler(this.Paint);