ASP.NET Image uploading with Resizing

Question

I have an aspx page which will upload images to server harddisk from client pc

But now i need to change my program in such a way that it would allow me to resize the

Answer 1

How to resize & Upload Image only for .jpg Extensions :
In upload.aspx page

And upload.aspx.cs
For resize

/// 

/// Created By Rajib Chowdhury Mob. 01766-306306; Web: http://onlineshoping.somee.com/
/// Complete This Page Coding On January 05, 2014
/// Programing C# By Visual Studio 2013 For Web
/// Dot Net Version 4.5
/// Database Virsion MSSQL Server 2005
/// 
        public bool ResizeImageAndUpload(System.IO.FileStream newFile, string folderPathAndFilenameNoExtension, double maxHeight, double maxWidth)
        {
            try
            {
                // Declare variable for the conversion
                float ratio;
                // Create variable to hold the image
                System.Drawing.Image thisImage = System.Drawing.Image.FromStream(newFile);
                // Get height and width of current image
                int width = (int)thisImage.Width;
                int height = (int)thisImage.Height;
                // Ratio and conversion for new size
                if (width > maxWidth)
                {
                    ratio = (float)width / (float)maxWidth;
                    width = (int)(width / ratio);
                    height = (int)(height / ratio);
                }
                // Ratio and conversion for new size
                if (height > maxHeight)
                {
                    ratio = (float)height / (float)maxHeight;
                    height = (int)(height / ratio);
                    width = (int)(width / ratio);
                }
                // Create "blank" image for drawing new image
                Bitmap outImage = new Bitmap(width, height);
                Graphics outGraphics = Graphics.FromImage(outImage);
                SolidBrush sb = new SolidBrush(System.Drawing.Color.White);
                // Fill "blank" with new sized image
                outGraphics.FillRectangle(sb, 0, 0, outImage.Width, outImage.Height);
                outGraphics.DrawImage(thisImage, 0, 0, outImage.Width, outImage.Height);
                sb.Dispose();
                outGraphics.Dispose();
                thisImage.Dispose();
                // Save new image as jpg
                outImage.Save(Server.MapPath(folderPathAndFilenameNoExtension + ".jpg"), System.Drawing.Imaging.ImageFormat.Jpeg);
                outImage.Dispose();
                return true;
            }
            catch (Exception)
            {
                return false;
            }
        }

And Button1_Click Event

        string filePath = "~\\Image\\";//your normal image path
        if (Page.IsValid)
        {
            HttpPostedFile myFile = ProductImage.PostedFile;//Get Slected Image
            int nFileLen = myFile.ContentLength;//Get slected Image Size
            string myimag = txtProductName.Text;//Get user input image name
            Guid ImageName = Guid.NewGuid();//get unique id
            if ((myFile != null) && (nFileLen > 1048576))
            {
                LabelAddStatus.Text = "minimum size exceed"; //If file image size 1 MB above
            }
            else
            {
                try
                {
                    if (ProductImage.HasFile)
                    {
                        String fileExtension = System.IO.Path.GetExtension(ProductImage.FileName).ToLower();
                        String[] allowedExtensions = { ".jpg" };//Declare For Allowed Extension
                        for (int i = 0; i < allowedExtensions.Length; i++)
                        {
                            if (fileExtension == allowedExtensions[i])
                            {
                                // Read file into a data stream
                                byte[] myData = new Byte[nFileLen];
                                myFile.InputStream.Read(myData, 0, nFileLen);
                                myFile.InputStream.Dispose();
                                // Save the stream to disk as temporary file. make sure the path is unique!
                                System.IO.FileStream newFile
                                        = new System.IO.FileStream(Server.MapPath(filePath + "_temp.jpg"),
                                                                   System.IO.FileMode.Create);
                                newFile.Write(myData, 0, myData.Length);
                                bool success = ResizeImageAndUpload(newFile, filePath + ("thumbs"+myimag + ImageName), 100, 100);//Save image your thumb image path
                                success = ResizeImageAndUpload(newFile, filePath + (myimag + ImageName), 768, 1024);//Save image your normal image path
                                //delete the temp file.
                                newFile.Close();
                                System.IO.File.Delete(Server.MapPath(filePath + "_temp.jpg"));
                                LabelAddStatus.Text = "File uploaded.";
                            }
                            else
                            {
                                LabelAddStatus.Text = "Unable to accept file type..";
                            }
                        }
                    }
                }
                catch (Exception)
                {
                    //No Exception Message
                }
            }
        }

Thanks...