c#图片base64去转义字符_C#中图片转换为Base64编码，Base64编码转换为图片

#region 图片转为base64编码的字符串

public string ImgToBase64String(string Imagefilename)

{

try

{

Bitmap bmp = new Bitmap(Imagefilename);

MemoryStream ms = new MemoryStream();

bmp.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);

byte[] arr = new byte[ms.Length];

ms.Position = 0;

ms.Read(arr, 0, (int)ms.Length);

ms.Close();

return Convert.ToBase64String(arr);

}

catch (Exception ex)

{

return null;

}

}

#endregion

#region base64编码的字符串转为图片

public void Base64StringToImage(string strbase64)

{

try

{

byte[] arr = Convert.FromBase64String(strbase64);

MemoryStream ms = new MemoryStream(arr);

System.Drawing.Image img = System.Drawing.Image.FromStream(ms);

string ls_path = Server.MapPath(@"imagescamera" + ls_imageNameCamera + ".jpg");

img.Save(ls_path, System.Drawing.Imaging.ImageFormat.Jpeg);

//System.Drawing.Image img = System.Drawing.Image.FromStream(ms);

//img.Save("ImgName.jpg", System.Drawing.Imaging.ImageFormat.Jpeg);

//img.Save("ImgName.bmp", ImageFormat.Bmp);

//img.Save("ImgName.gif", ImageFormat.Gif);

//img.Save(@"imagesImgName.png", ImageFormat.Png);

Session["ImageNameCamera"] = ls_imageNameCamera;

}

catch (Exception ex)

{

}

}

#endregion