The answer is YES, There is a control for your purposes. SpiceLogic BLOB & Thumbnail Control. This control not only fulfills your image rendering desire, but also it gives you many more features and options. You can show the image as thumbnails; you can directly upload files to the byte property where a file uploader is just built in. You can also instruct this control to upload the image and re-size it upon uploading. Guess what! You can display hyperlink to prompt File Download where the file content directly comes from the byte property (or BLOB field of the database). Like any other standard image button control, this control supports post-back events like Click, Command, FileUploading, FileUploaded etc.
It is a set of ASP.NET server controls for developing SQL BLOB & Thumbnail related web applications in the most efficient, organized and object oriented manner without requiring you writing any codes or ashx http handler files.
Feature HighlightsDisplaying BLOB Images + Displaying Thumbnails
Powerful Zero Code Data Binding Feature:
You can also Update/Insert new Blob records using this control (Setting Upload Mode=true) without writing any code. You will feel as if you are using data bound Picture Box control in Windows Form Application where Picture Box’s Image property is directly bound to a byte type field of your data source. View Screen Shot of a DataBound GridView Control where Image is shown as thumbnail from SQL BLOB. You may configure it so that clicking the thumbnail will show a pop up window with full sized image, but again, you wont need to write code for this.
Secured and programmable hidden download link:
If you are selling e-book or software products that you want your user to download in a secured page after payment, you can set the File Name programmatically any value you want and render the link at that secure page. So, when your user download the file, you can disable the link for the future and thus your user wont be able to download from the same link again and he or she wont have any idea from where the file was downloaded and thus he or she cant even share the link. Say for example, if you have a page where user enters after providing his login information, you may use the following snippet to program a download link:
This control never creates any temporary file in your server so you wont need to worry about setting any WRITE permission to your web folders. There are some solutions available in the market which allows you to encrypt downloadlink or generate dynamic download link for software sales or eBook sales which really requires you to make a temporary folder in your server with Write permission etc... But our control won’t bother you to do any of these.
Enhanced Upload functionality:
No code for Image Upload & Re-size & Convert with Firing FileUploaded Event.Simply setting the property UploadMode=true will show a Upload form element and upload button element, and that gives you the power to upload files directly to the BlobData property, you do not need to write any code. Guess What!! You want to upload an image and your image may need to be re-sized to a manageable size after upload... you can do all of these by setting some properties. Not only that, you may add an event handler method for FileUploading event and FileUploaded Event. FileUploading event allows you to validate uploading files.
No Temporary file is created in your server:
This control never and never creates any temporary files in your server so that you don’t need to worry about setting Write permission to any of your server folder.
Finally, this is the control that you were looking for a long time for developing your web application where you had SQL BLOB related operations.
FULL TRUST Configuration required
ASP NET BLOB Thumbnail Controls will work in your shared hosting if your hosting is configured to FULL TRUST. If you want to use this control in MEDIUM TRUST settings, please do let us know. We will give you a customized dll with a dependency file so that it will work in your shared hosting with MEDIUM TRUST configuration.