using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;using System.Drawing.Drawing2D;using System.Drawing.Imaging;namespace WindowsApplication2{  public partial class Form20 : Form  {    public Form20()    {      InitializeComponent();    }    private void Form20_Load(object sender, EventArgs e)    {    }    private void button1_Click(object sender, EventArgs e)    {      Rectangle rect = new Rectangle(0, 0, 100, 100);      Graphics dg = this.CreateGraphics();      Image image = new Bitmap(rect.Width, rect.Height, dg);      Graphics ig = Graphics.FromImage(image);      ig.FillRectangle(Brushes.Black, rect);      Font font = new Font("Arial", 12);      Brush brush = System.Drawing.Brushes.White;      ig.DrawString("zhuzhao", font, brush,0, 0);      //ImageFormat iformat=new ImageFormat(new Guid(Bmp));      image.Save(@"c:/image.png");      dg.DrawImage(image,new PointF(100,100));    }  }}