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System.Exception: System.Exception: A Graphics object cannot be *d from an image that has an indexed pixel format.
at System.Drawing.Graphics.FromImage(Image image)
at KeLin.ClassManager.Tool.WapTool.AddWaterPic(String Path, String Path_syp, String Path_sypf)
at KeLin.ClassManager.Tool.WapTool.AddWaterPic(String Path, String Path_syp, String Path_sypf)
at KeLin.ClassManager.Tool.WapTool.AddWater(String Path, String Path_sy, String addtext, String logourl, Int64 fontsize, String color)
at KeLin.WebSite.bbs.Book_View_addfile.Page_Load(Object sender, EventArgs e)