Following is the code to retrieve image from database and then saving it to a folder.
public string BinarytoNewsImage(int ID)
{
byte[] btimage = null;
string image = "";
string filename = null;
int mediaid;
DataSet dsNews = new DataSet();
adp = new SqlDataAdapter("Select Top 1 * from tblNew Where intNewId=" + ID, offcon);
adp.Fill(dsNews, "tblNews1");
if (dsNews.Tables["tblNews1"].Rows.Count > 0)
{
if (dsNews.Tables["tblNews1"].Rows[0]["strImage"] != DBNull.Value)
{
btimage = (byte[])dsNews.Tables["tblNews1"].Rows[0]["strImage"];
mediaid = Convert.ToInt32(dsNews.Tables["tblNews1"].Rows[0]["intMediaId"].ToString());
filename = dsNews.Tables["tblNews1"].Rows[0]["strfilename"].ToString();
image = BinarytoImage(btimage, mediaid);
}
else
{
filename = dsNews.Tables["tblNews1"].Rows[0]["strfilename"].ToString();
image = "http://www.patrika.com/media/" + filename;
}
}
return image;
}
public string BinarytoImage(byte[] stream, int ID)
{
string ImagePath = "";
string Image = ID + ".jpg";
var URL = System.Configuration.ConfigurationManager.AppSettings["ImagePath"].ToString();
string FolderName = new Uri(URL).LocalPath;
var help = HttpContext.Current.Server.MapPath(FolderName);
if (Directory.Exists(HttpContext.Current.Server.MapPath(FolderName)))
{
string[] files = Directory.GetFiles(HttpContext.Current.Server.MapPath(FolderName), ID + ".jpg");
if (files.Length > 0)
{
ImagePath = URL + ID + ".jpg";
}
else
{
using (MemoryStream MS = new MemoryStream(stream, 0, stream.Length))
{
MS.Write(stream, 0, stream.Length);
System.Drawing.Image img = System.Drawing.Image.FromStream(MS);
img.Save(help + ID + ".jpg", System.Drawing.Imaging.ImageFormat.Gif);
img.Dispose();
img = null;
ImagePath = URL + ID + ".jpg";
}
}
}
return ImagePath;
}
Everything is working fine the images are saving to a folder but my problem is images are getting blur after retrieval.
I just don't know the reason as when I am using another code for retrieval than images are coming fine but are not saved to folder:
DataSet dsNews = new DataSet();
adp = new SqlDataAdapter("Select Top 1 * from tblNew Where intNewId=901371", con);
adp.Fill(dsNews, "tblNews1");
if (dsNews.Tables["tblNews1"].Rows[0]["strImage"] != DBNull.Value)
{
byte[] btimage = (byte[])dsNews.Tables["tblNews1"].Rows[0]["strImage"];
Response.ContentType = "image/jpeg";
Response.BinaryWrite(btimage);
}
I need those images to be saved to folder so that I don't have to call database after once image comes.
Wouldn't it help to change this line
img.Save(help + ID + ".jpg", System.Drawing.Imaging.ImageFormat.Gif);
to store it as JPEG rather? as that's the source format
EDIT: Your are not moving the stream pointer back to the start.
Try change these lines:
using (MemoryStream MS = new MemoryStream(stream, 0, stream.Length))
{
MS.Write(stream, 0, stream.Length);
System.Drawing.Image img = System.Drawing.Image.FromStream(MS);
...
To
using (MemoryStream MS = new MemoryStream(stream, 0, stream.Length))
{
MS.Write(stream, 0, stream.Length);
MS.Seek(0, SeekOrigin.Begin);
System.Drawing.Image img = System.Drawing.Image.FromStream(MS);
...
I write the common method, all is ok. Maybe your byte[]stream is not right,pls check.
byte[] stream = File.ReadAllBytes(@"D:\YWG\123.jpg");
using (MemoryStream MS = new MemoryStream(stream, 0, stream.Length))
{
MS.Write(stream, 0, stream.Length);
using (Image img = Image.FromStream(MS))
{
img.Save(@"D:\dd.jpg", System.Drawing.Imaging.ImageFormat.Gif);
}
}
I see the dest file "dd.jpg" is ok.
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