C#GDI+ 绘制线段（实线或虚线）、矩形、字符串、圆、椭圆

C#GDI+ 绘制线段（实线或虚线）、矩形、字符串、圆、椭圆

绘制基本线条和图形 比较简单，直接看代码。

             Graphics graphics = e.Graphics;

             //绘制实线
             using (Pen pen = new Pen(Color.Black, ))
             {
                 pen.DashStyle = System.Drawing.Drawing2D.DashStyle.Solid; //实线
                 graphics.DrawLine(pen,,,,);
             }

             //画出虚线
             using (Pen pen = new Pen(Color.Black, ))
             {
                 pen.DashStyle = System.Drawing.Drawing2D.DashStyle.Dash; //虚线
                 graphics.DrawLine(pen, , , , );
             }

             //画出矩形
             using (Pen pen = new Pen(Color.Black, ))
             {
                  Rectangle rectangle = new Rectangle(,,,);
                     graphics.DrawRectangle(pen,rectangle);
             }

             //绘制字符串
             string str = "Hello 笨男孩!";
             graphics.DrawString(str, this.Font, Brushes.Black, , );

             //测量字符串的高度和宽度
             SizeF szfTitle = graphics.MeasureString(str, this.Font);
             graphics.DrawString(str, this.Font, Brushes.Black, , -(int)szfTitle.Height);
             graphics.DrawString("该字符串高度："+szfTitle.Height+" 字符串宽度："+szfTitle.Width, this.Font, Brushes.Black, , );

             //绘制圆
             using(Pen pen = new Pen(Color.Black,))
             {
                 //圆
                 graphics.DrawEllipse(pen,,,,); //在画板上画椭圆,起始坐标为(10,10),外接矩形的宽为100,高为100   此时就是一个圆

                 //椭圆
                 graphics.DrawEllipse(pen, , , , ); //在画板上画椭圆,起始坐标为(10,10),外接矩形的宽为100,高为50   此时就是一个椭圆
             }

绘制效果

源代码工程文件下载