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/// ¸ù¾ÝÖ¸¶¨²ÎÊý·µ»ØBitMap¶ÔÏó
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/// using System.Drawing;
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/// srBmp.Dispose();
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/// Bitmap srBmp = srBitmap(srs);
/// System.IO.MemoryStream srMS = new System.IO.MemoryStream();
/// srBmp.Save(srMS,System.Drawing.Imaging.ImageFormat.Gif);
/// Response.ClearContent();
/// Response.ContentType = "image/gif";
/// Response.BinaryWrite(srMS.ToArray());
/// srBmp.Dispose();
/// </summary>
/// <param name="srs"></param>
/// <returns></returns>
public static Bitmap srBitmap(string srs)
{
 
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