public static string ImageFile2Base64( string filename) |
{ |
if (!File.Exists(filename)) |
return String.Empty; |
System.Drawing.Image image = System.Drawing.Image.FromFile(filename); |
return Image2Base64(image); |
} |
public static void Base642ImageFile( string base64, string filename) |
{ |
try |
{ |
System.Drawing.Image image = Base642Image(base64); |
System.Drawing.Bitmap newimage = new System.Drawing.Bitmap(image); |
image.Dispose(); |
string dir = Path.GetDirectoryName(filename); |
if (!Directory.Exists(dir)) |
Directory.CreateDirectory(dir); |
newimage.Save(filename); |
} |
catch (Exception exc) |
{ } |
} |
public static void Base642ImageFile( string base64, string filename, System.Drawing.Imaging.ImageFormat format) |
{ |
System.Drawing.Image image = Base642Image(base64); |
image.Save(filename, format); |
} |
public static string Image2Base64(System.Drawing.Image image) |
{ |
MemoryStream ms = new MemoryStream(); |
image.Save(ms, System.Drawing.Imaging.ImageFormat.Png); |
Byte[] filedata = ms.ToArray(); |
ms.Close(); |
return Convert.ToBase64String(filedata); |
} |
public static System.Drawing.Image Base642Image( string base64) |
{ |
Byte[] filedate = Convert.FromBase64String(base64); |
MemoryStream ms = new MemoryStream(filedate); |
System.Drawing.Image image = System.Drawing.Image.FromStream(ms); |
ms.Flush(); |
ms.Close(); |
System.Drawing.Image newimage = image.Clone() as System.Drawing.Image; |
image.Dispose(); |
return newimage; |
} |
by: 发表于:2017-12-20 17:29:27 顶(0) | 踩(0) 回复
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