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.net讀取影象並儲存為檔案

{
            
byte[] mBlob = (byte[])reader["影象"];

            System.IO.MemoryStream ms 
=new System.IO.MemoryStream(mBlob);
            System.Drawing.Image img 
= System.Drawing.Image.FromStream(ms);

            img.Save(Request.PhysicalApplicationPath 
+"Images/100.jpg", System.Drawing.Imaging.ImageFormat.Jpeg);
           
        }