Images delete.
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hi, I am using the below coding to thumbnail creation, this coding is saving both the original image and the thumbnail image. I don’t want the original image. How to delete the original image. Please help me. private void btnUpload_Click(object sender, System.EventArgs e) { // Initialize variables string sSavePath; string sThumbExtension; int intThumbWidth; int intThumbHeight; // Set constant values sSavePath = "images/"; sThumbExtension = "_thumb"; intThumbWidth = 160; intThumbHeight = 120; // If file field isn’t empty if (filUpload.PostedFile != null) { // Check file size (mustn’t be 0) HttpPostedFile myFile = filUpload.PostedFile; int nFileLen = myFile.ContentLength; if (nFileLen == 0) { lblOutput.Text = "No file was uploaded."; return; } // Check file extension (must be JPG) if (System.IO.Path.GetExtension(myFile.FileName).ToLower() != ".jpg") { lblOutput.Text = "The file must have an extension of JPG"; return; } // Read file into a data stream byte[] myData = new Byte[nFileLen]; myFile.InputStream.Read(myData,0,nFileLen); // Make sure a duplicate file doesn’t exist. If it does, keep on appending an // incremental numeric until it is unique string sFilename = System.IO.Path.GetFileName(myFile.FileName); int file_append = 0; while (System.IO.File.Exists(Server.MapPath(sSavePath + sFilename))) { file_append++; sFilename = System.IO.Path.GetFileNameWithoutExtension(myFile.FileName) + file_append.ToString() + ".jpg"; } // Save the stream to disk System.IO.FileStream newFile = new System.IO.FileStream(Server.MapPath(sSavePath + sFilename), System.IO.FileMode.Create); newFile.Write(myData,0, myData.Length); newFile.Close(); // Check whether the file is really a JPEG by opening it System.Drawing.Image.GetThumbnailImageAbort myCallBack = new System.Drawing.Image.GetThumbnailImageAbort(ThumbnailCallback); Bitmap myBitmap; try { myBitmap = new Bitmap(Server.MapPath(sSavePath + sFilename)); // If jpg file is a jpeg, create a thumbnail filename that is uniqu
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hi, I am using the below coding to thumbnail creation, this coding is saving both the original image and the thumbnail image. I don’t want the original image. How to delete the original image. Please help me. private void btnUpload_Click(object sender, System.EventArgs e) { // Initialize variables string sSavePath; string sThumbExtension; int intThumbWidth; int intThumbHeight; // Set constant values sSavePath = "images/"; sThumbExtension = "_thumb"; intThumbWidth = 160; intThumbHeight = 120; // If file field isn’t empty if (filUpload.PostedFile != null) { // Check file size (mustn’t be 0) HttpPostedFile myFile = filUpload.PostedFile; int nFileLen = myFile.ContentLength; if (nFileLen == 0) { lblOutput.Text = "No file was uploaded."; return; } // Check file extension (must be JPG) if (System.IO.Path.GetExtension(myFile.FileName).ToLower() != ".jpg") { lblOutput.Text = "The file must have an extension of JPG"; return; } // Read file into a data stream byte[] myData = new Byte[nFileLen]; myFile.InputStream.Read(myData,0,nFileLen); // Make sure a duplicate file doesn’t exist. If it does, keep on appending an // incremental numeric until it is unique string sFilename = System.IO.Path.GetFileName(myFile.FileName); int file_append = 0; while (System.IO.File.Exists(Server.MapPath(sSavePath + sFilename))) { file_append++; sFilename = System.IO.Path.GetFileNameWithoutExtension(myFile.FileName) + file_append.ToString() + ".jpg"; } // Save the stream to disk System.IO.FileStream newFile = new System.IO.FileStream(Server.MapPath(sSavePath + sFilename), System.IO.FileMode.Create); newFile.Write(myData,0, myData.Length); newFile.Close(); // Check whether the file is really a JPEG by opening it System.Drawing.Image.GetThumbnailImageAbort myCallBack = new System.Drawing.Image.GetThumbnailImageAbort(ThumbnailCallback); Bitmap myBitmap; try { myBitmap = new Bitmap(Server.MapPath(sSavePath + sFilename)); // If jpg file is a jpeg, create a thumbnail filename that is uniqu
You don't have to delete the file. Just don't create it. Create a MemoryStream object from the byte array, and load the image from that.
jai 123 wrote:
myFile.InputStream.Read(myData,0,nFileLen);
That's not a secure way to read the data. The Read method returns an integer that tells you how many bytes where actually read, and this can be less than the number of bytes requested. You have to loop until you have read all bytes, or until the value returned is zero.
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