static public byte[] Img_字符(string 字符, int widTh, int higHt)
{
System.Drawing.Font ft = new System.Drawing.Font("Tohoma", 10);
System.Drawing.Bitmap bm = new System.Drawing.Bitmap(widTh, higHt);
System.Drawing.Graphics gr = System.Drawing.Graphics.FromImage(bm);
gr.FillRectangle(System.Drawing.SystemBrushes.WindowText, new System.Drawing.Rectangle(new System.Drawing.Point(0, 0), bm.Size));
System.Drawing.SizeF sf = gr.MeasureString(字符, ft);
float w = (sf.Width);
float h = (sf.Height);
w = (widTh / 2 / 2 / 1.5F);
h = (higHt - h) / 2;
gr.DrawString(字符, ft, new System.Drawing.SolidBrush(System.Drawing.Color.Red), new System.Drawing.PointF(w, h));
System.IO.MemoryStream ms = new System.IO.MemoryStream();
bm.Save(ms, System.Drawing.Imaging.ImageFormat.Bmp);
System.IO.BinaryReader br = new System.IO.BinaryReader(ms);
ms.Position = 0;
byte[] bs = br.ReadBytes((int)ms.Length);
br.Close();
ms.Close();
return bs;
}