/// <summary>
/// Delete an image by ImageId.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void OnDeleteImage(object sender, CommandEventArgs e)
{
try
{
if (e.CommandName == "Delete")
{
Int32 imageId = Int32.Parse(e.CommandArgument as String);
if (String.IsNullOrEmpty(this.selectedValue) || this.selectedValue.Equals(BLOB))
{
ImageInBlob deletedImage = (from i in imagesDb.BlobImages
where i.ImageId == imageId
select i).FirstOrDefault();
if (deletedImage != null)
{
// Delete an blob by uri.
var blob = this.GetContainer().GetBlobReference(deletedImage.BlobUri);
blob.DeleteIfExists();
imagesDb.BlobImages.Remove(deletedImage);
imagesDb.SaveChanges();
}
}
else if (this.selectedValue.Equals(SQL))
{
ImagesTable deletedImage = (from i in imagesDb.ImagesTable
where i.ImageId == imageId
select i).FirstOrDefault();
if (deletedImage != null)
{
ImageInSQLAzure deletedImageInfo = deletedImage.ImageInfo;
imagesDb.SQLAzureImages.Remove(deletedImageInfo);
imagesDb.ImagesTable.Remove(deletedImage);
imagesDb.SaveChanges();
}
}
}
}
catch (StorageClientException se)
{
this.status.Text = "Storage client error: " + se.Message;
}
catch (Exception)
{
}
this.RefreshGallery();
}
/// <summary>
/// Set the uri of images.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void OnDataBound(object sender, ListViewItemEventArgs e)
{
if (e.Item.ItemType == ListViewItemType.DataItem)
{
Image img = e.Item.FindControl("img") as Image;
// According to the choose of location, we set the uri of image.
if (String.IsNullOrEmpty(this.selectedValue) || this.selectedValue.Equals(BLOB))
{
ImageInBlob image = e.Item.DataItem as ImageInBlob;
img.ImageUrl = image.BlobUri;
}
else if (this.selectedValue.Equals(SQL))
{
ImageInSQLAzure image = e.Item.DataItem as ImageInSQLAzure;
img.ImageUrl = "GetImage.ashx?ImageId=" + image.ImageId;
}
}
}
/// <summary>
/// Save the images to the location
/// </summary>
/// <param name="name">It's the name that user inputs.</param>
/// <param name="description">It's the description that user inputs.</param>
/// <param name="fileName">It's the name of the file.</param>
/// <param name="contentType">It's the type of the file.</param>
/// <param name="data">It's the content of the file</param>
private void SaveImage(string name, string description, string fileName, string contentType, byte[] data)
{
// Store the images to the Blob and SQL Azure by the choose of the location.
if (this.selectedValue.Equals(BLOB))
{
name = string.IsNullOrEmpty(name) ? "unknown" : name;
var blob = this.GetContainer().GetBlobReference(name);
blob.Properties.ContentType = contentType;
ImageInBlob newImage = new ImageInBlob();
newImage.FileName = fileName;
newImage.ImageName = name;
newImage.Description = string.IsNullOrEmpty(description) ? "unknown" : description;
blob.UploadByteArray(data);
newImage.BlobUri = blob.Uri.ToString();
imagesDb.BlobImages.Add(newImage);
imagesDb.SaveChanges();
}
else if (this.selectedValue.Equals(SQL))
{
ImageInSQLAzure newImageInfo = new ImageInSQLAzure();
ImagesTable newImage = new ImagesTable();
newImageInfo.FileName = fileName;
newImageInfo.ImageName = string.IsNullOrEmpty(name) ? "unknown" : name;
newImageInfo.Description = string.IsNullOrEmpty(description) ? "unknown" : description;
newImage.ImageInfo = newImageInfo;
newImage.ImageData = data;
imagesDb.SQLAzureImages.Add(newImageInfo);
imagesDb.ImagesTable.Add(newImage);
imagesDb.SaveChanges();
}
}
/// <summary>
/// Copy an image by ImageId
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void OnCopyImage(object sender, CommandEventArgs e)
{
if (e.CommandName == "Copy")
{
Int32 imageId = Int32.Parse(e.CommandArgument as String);
if (String.IsNullOrEmpty(this.selectedValue) || this.selectedValue.Equals(BLOB))
{
ImageInBlob copiedImage = (from i in imagesDb.BlobImages
where i.ImageId == imageId
select i).FirstOrDefault();
if (copiedImage != null)
{
var srcBlob = this.GetContainer().GetBlobReference(copiedImage.BlobUri);
String newImageName = "Copy of \"" + copiedImage.ImageName + "\"";
var newBlob = this.GetContainer().GetBlobReference(Guid.NewGuid().ToString());
// Copy content from source blob
newBlob.CopyFromBlob(srcBlob);
// Copy the info of image.
ImageInBlob newImage = new ImageInBlob();
newImage.FileName = copiedImage.FileName;
newImage.ImageName = newImageName;
newImage.Description = copiedImage.Description;
newImage.BlobUri = newBlob.Uri.ToString();
imagesDb.BlobImages.Add(newImage);
imagesDb.SaveChanges();
this.RefreshGallery();
}
}
else if (this.selectedValue.Equals(SQL))
{
ImagesTable copiedImage = (from i in imagesDb.ImagesTable
where i.ImageId == imageId
select i).FirstOrDefault();
if (copiedImage != null)
{
ImageInSQLAzure copiedImageInfo = copiedImage.ImageInfo;
ImagesTable newImage = new ImagesTable();
ImageInSQLAzure newImageInfo = new ImageInSQLAzure();
// Copy the info of image.
newImageInfo.FileName = copiedImageInfo.FileName;
newImageInfo.ImageName = "Copy of \"" + copiedImageInfo.ImageName + "\"";
newImageInfo.Description = copiedImageInfo.Description;
newImage.ImageData = copiedImage.ImageData;
newImage.ImageInfo = newImageInfo;
imagesDb.SQLAzureImages.Add(newImageInfo);
imagesDb.ImagesTable.Add(newImage);
imagesDb.SaveChanges();
this.RefreshGallery();
}
}
}
}
