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This example illustrates the usage of RadAsyncUpload and BinaryImage and how to display and edit images. RadAsyncUpload offers asynchronous upload capability while maintaining the look of the regular RadUpload control.
The upload process requires that the files are uploaded to a custom handler and not to the hosting page. Files are stored in a temporary location until a Postback occurs. The temporary location is cleaned-up automatically.
Integrated visual clue of the current operations - uploading, upload successfully completed, upload failed. RadAsyncUpload requires the Telerik.
WebResource handler to be registered in the web. You need to ensure that any submit buttons on the page are disabled while upload is in progress. Otherwise, there is no guarantee that the files will be uploaded successfully. Some of the key advantages that RadAsyncUpload offers against RadUpload are Uploads the file s automatically and asynchronously to the server Integrated visual clue of the current operations - uploading, upload successfully completed, upload failed Client side events for upload completed and upload failed Simpler validation There are a few important things to consider when using RadAsyncUpload RadAsyncUpload requires the Telerik.
Otherwise, there is no guarantee that the files will be uploaded successfully You can also perform validation over the file input as shown in the demo code: Substring 0, , " Read fileData, 0, int file. Add " Name", SqlDbType. NVarChar, 50, "Name" ; cmd. Add " Description", SqlDbType. NVarChar, , "Description" ; cmd. Add " Data", SqlDbType. Open ; SqlCommand cmd; if radAsyncUpload. Read fileData, 0, CInt file. NVarChar, 50, "Name" cmd.
NVarChar, , "Description" cmd. Is this article helpful? Thank you for your feedback!