To save a uploaded image in specific format[Answered] RSS

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  geet

  Member

  152 Points

  886 Posts

  To save a uploaded image in specific format

  Jul 08, 2010 11:35 AM|geet|LINK

  Hello Everyone,

      How can one save an uploaded image in a specific dimension ie in a particular height, width without distorting actual image?It's very urgent.
  

  Thanks
  

    
  

   
  

• • Reply
  NiravVyas

  Participant

  964 Points

  319 Posts

  Re: To save a uploaded image in specific format

  Jul 08, 2010 12:44 PM|NiravVyas|LINK

  HI Geet,

  I had played with this image thing few months back , and in your case if you just want to resize your image you can look out the code below and hopefully it would help you out.

  http://snippets.dzone.com/posts/show/1485

   

  Thanks and Regards

  Nirav Vyas

  Please Mark As Answer If found useful

   

   

   

  Hope this helps
  
  Thanks
  Nirav
• • Reply
  rajum

  Member

  300 Points

  86 Posts

  Re: To save a uploaded image in specific format

  Jul 08, 2010 12:50 PM|rajum|LINK

  using System;
  using System.Collections.Generic;
  using System.Linq;
  using System.Web;
  using System.IO;
  using System.Drawing;
  using System.Net;
  using System.Drawing.Drawing2D;
  /// <summary>
  /// Summary description for Class2
  /// </summary>
  public class Class2 : AspectRatio
  {
  	public Class2()
  	{
  		//
  		// TODO: Add constructor logic here
  		//
  	}
      public Bitmap GetImage(byte[] imageByte, int width, int height)
      {
          System.Drawing.Image b;
          Bitmap bitMap = null;
          if (imageByte != null && imageByte.Length > 10)
          {
              using (MemoryStream mm = new MemoryStream())
              {
                  mm.Write(imageByte, 0, imageByte.Length);
                  b = System.Drawing.Image.FromStream(mm);
                  WidthAndHeight(b.Width, b.Height, width, height);
                  bitMap = new System.Drawing.Bitmap(b, Width, Height);
                  using (Graphics g = Graphics.FromImage(bitMap))
                  {
                      g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
                      g.SmoothingMode = SmoothingMode.HighQuality;
                      g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
                      g.DrawImage(bitMap, 0, 0, b.Width, b.Height);
                      g.Dispose(); b.Dispose(); mm.Dispose(); GC.Collect();
                  }
              }
          }
          return bitMap;
      }
  }
  public class AspectRatio
  {
      public AspectRatio()
      {
      }
      private int d_Width = 0;
      private int d_Height = 0;
      public int Width
      {
          get { return d_Width; }
          set { d_Width = value; }
      }
      public int Height
      {
          get { return d_Height; }
          set { d_Height = value; }
      }
      /// <summary>
      /// Methord For Calculate Hight and Width
      /// </summary>
      /// <param name="aWidth"></param>
      /// <param name="aHeight"></param>
      /// <param name="dWidth"></param>
      /// <param name="dHeight"></param>
      public void WidthAndHeight(int aWidth, int aHeight, int dWidth, int dHeight)
      {
          double height = aHeight;
          double width = aWidth;
          double rWidht = Convert.ToDouble(dWidth);
          double rHeight = Convert.ToDouble(dHeight);
          int fWidth = 0;
          int fHeight = 0;
          double hRatio = 0.0;
          double vRatio = 0.0;
          if (width > rWidht)
          {
              hRatio = (rWidht / width);
              vRatio = (rHeight / height);
  
  
              if (vRatio > hRatio)
              {
                  fWidth = Convert.ToInt32((double)width * hRatio);
                  fHeight = Convert.ToInt32((double)height * hRatio);
              }
              else
              {
                  fWidth = Convert.ToInt32((double)width * vRatio);
                  fHeight = Convert.ToInt32((double)height * vRatio);
              }
  
  
          }
          else if (rWidht > width)
          {
              hRatio = (rWidht / width);
              vRatio = (rHeight / height);
  
  
              if (vRatio > hRatio)
              {
                  fWidth = Convert.ToInt32((double)width * hRatio);
                  fHeight = Convert.ToInt32((double)height * hRatio);
              }
              else
              {
                  fWidth = Convert.ToInt32((double)width * vRatio);
                  fHeight = Convert.ToInt32((double)height * vRatio);
              }
          }
          else if (height > rHeight)
          {
              hRatio = (rWidht / width);
              vRatio = (rHeight / height);
  
  
              if (vRatio > hRatio)
              {
                  fWidth = Convert.ToInt32((double)width * hRatio);
                  fHeight = Convert.ToInt32((double)height * hRatio);
              }
              else
              {
                  fWidth = Convert.ToInt32((double)width * vRatio);
                  fHeight = Convert.ToInt32((double)height * vRatio);
              }
          }
          else if (rHeight > height)
          {
              hRatio = (rWidht / width);
              vRatio = (rHeight / height);
  
  
              if (vRatio > hRatio)
              {
                  fWidth = Convert.ToInt32((double)width * hRatio);
                  fHeight = Convert.ToInt32((double)height * hRatio);
              }
              else
              {
                  fWidth = Convert.ToInt32((double)width * vRatio);
                  fHeight = Convert.ToInt32((double)height * vRatio);
              }
          }
          d_Width = fWidth;
          d_Height = fHeight;
      }
  }

  
  

  
  

  
  

  protected void Upload_Click(object sender, EventArgs e)
      {
          Class2 objClass = new Class2();
          System.Drawing.Bitmap b = objClass.GetImage(FileUpload1.FileBytes, 200, 200);
          b.Save(Server.MapPath(FileUpload1.FileName));
      }

  
  
  

• • Reply
  geet

  Member

  152 Points

  886 Posts

  Re: To save a uploaded image in specific format

  Jul 08, 2010 01:59 PM|geet|LINK

  Hi

     Thanks for Reply. But I am storing Image like this:

   if ((btnSave.Text == "Update" && FileUpload1.FileName != "") || btnSave.Text == "Save")
              {               
                  String sp;
                  sp = Server.MapPath("../UploadImg");
                  String fn = FileUpload1.FileName;
                  if (sp.EndsWith("//") == false)
                  {
                      sp += "//";
                  }
                  sp += fn;
                  FileUpload1.PostedFile.SaveAs(sp);
                  strFN = FileUpload1.FileName;               
              }
              cmd.Parameters.Add("@img", SqlDbType.VarChar, 50).Value = strFN;

  
  

  
  

  
  

  
  

  
  

• • Reply
  NiravVyas

  Participant

  964 Points

  319 Posts

  Re: To save a uploaded image in specific format

  Jul 09, 2010 07:16 AM|NiravVyas|LINK

  OK then you just need to read the image file into bytes and resize it and then save it.Below is the code

   

  If ImgUpload.HasFile Then
  
  
              Dim pFile As HttpPostedFile = ImgUpload.PostedFile
              Dim iLen As Integer = pFile.ContentLength
              Dim oStream As System.IO.Stream = pFile.InputStream
              Dim bBuffer(iLen) As Byte
              Dim iFile() As Byte
              oStream.Read(bBuffer, 0, iLen)
              iFile = bBuffer
              bBuffer = ResizeImageFile(bBuffer, 45)
              oStream.Close()
             bBuffer = nothing
  End If

  
   

    Public Function ResizeImageFile(ByVal imageFile As Byte(), ByVal targetSize As Integer) As Byte()
          Dim original As System.Drawing.Image = System.Drawing.Image.FromStream(New MemoryStream(imageFile))
          Dim targetH As Integer, targetW As Integer
          If original.Height > original.Width Then
              targetH = targetSize
              targetW = targetSize
              'targetW = (int)(original.Width * ((float)targetSize / (float)original.Height)); 
          Else
              targetW = targetSize
              targetH = targetSize
              'targetH = (int)(original.Height * ((float)targetSize / (float)original.Width)); 
          End If
          Dim imgPhoto As System.Drawing.Image = System.Drawing.Image.FromStream(New MemoryStream(imageFile))
          ' Create a new blank canvas. The resized image will be drawn on this canvas. 
          Dim bmPhoto As New Bitmap(targetW, targetH, System.Drawing.Imaging.PixelFormat.Format24bppRgb)
          bmPhoto.SetResolution(72, 72)
  
          Dim grPhoto As Graphics = Graphics.FromImage(bmPhoto)
          grPhoto.SmoothingMode = SmoothingMode.AntiAlias
          grPhoto.InterpolationMode = InterpolationMode.HighQualityBicubic
          grPhoto.PixelOffsetMode = PixelOffsetMode.HighQuality
          grPhoto.DrawImage(imgPhoto, New Rectangle(0, 0, targetW, targetH), 0, 0, original.Width, original.Height, _
          GraphicsUnit.Pixel)
  
          ' REMOVE COMMENTED CODE BELOW TO SAVE TO MEMORY 
          Dim mm As New MemoryStream()
          bmPhoto.Save(mm, System.Drawing.Imaging.ImageFormat.Jpeg)
  
          '''' SAVE TO FILE DIRECTLY FROM HERE
          Dim sFileName As String
          sFileName = GetYourFileNameWithFullPath()
          bmPhoto.Save(sFileName, ImageFormat.Bmp)
  
          '''''DISPOSE OF ALL OBJECT 
          original.Dispose()
          imgPhoto.Dispose()
          bmPhoto.Dispose()
          grPhoto.Dispose()
  
          '''''RETRUN THE BUUFER CONTENT
          Return mm.GetBuffer()
      End Function

  
  

  Thanks and Regards

  Nirav Vyas

  Please Mark As Answer If found useful

   

  Hope this helps
  
  Thanks
  Nirav
• • Reply
  Vipindas

  Contributor

  4392 Points

  933 Posts

  Re: To save a uploaded image in specific format

  Jul 12, 2010 03:38 AM|Vipindas|LINK

  using System.Drawing;
  using System.Drawing.Drawing2D;

          public void ResizeStream(int imageSize, Stream filePath, string outputPath)
          {
              var image = Image.FromStream(filePath);

              int thumbnailSize = imageSize;
              int newWidth, newHeight;

              if (image.Width > image.Height)
              {
                  newWidth = thumbnailSize;
                  newHeight = image.Height * thumbnailSize / image.Width;
              }
              else
              {
                  newWidth = image.Width * thumbnailSize / image.Height;
                  newHeight = thumbnailSize;
              }

              var thumbnailBitmap = new Bitmap(newWidth, newHeight);

              var thumbnailGraph = Graphics.FromImage(thumbnailBitmap);
              thumbnailGraph.CompositingQuality = CompositingQuality.HighQuality;
              thumbnailGraph.SmoothingMode = SmoothingMode.HighQuality;
              thumbnailGraph.InterpolationMode = InterpolationMode.HighQualityBicubic;

              var imageRectangle = new Rectangle(0, 0, newWidth, newHeight);
              thumbnailGraph.DrawImage(image, imageRectangle);

              thumbnailBitmap.Save(outputPath, image.RawFormat);
              thumbnailGraph.Dispose();
              thumbnailBitmap.Dispose();
              image.Dispose();
          }

  then call resize image function as

  ResizeImage(400, File1.FileContent, path);