Ajax toolkit upload multiple files

Once downloaded the file start install it and follow the instructions which showing in screen automatically it will install all the controls in visual studio. Once installation done ajax controls will be like as shown below in visual studio. Once our controls installation done create one new asp.

Once we add AjaxFileUpload control our page code will be like as shown below. If you observe above AjaxFileUpload control we added multiple properties by using those properties, we can set our restrictions while uploading files.

AllowedFileTypes : By using this property we can restrict type of files that need to be uploaded. MaximumNumberOfFiles : By using this property we can restrict number of files that a user can added to upload queue. OnUploadComplete : This property will call server side event to upload files and it will raise whenever we click upload button in Ajaxfileupload control.

Now add uploads folder to your application to upload files once finished adding folder then open code behind file and write the code like as shown below. C Code. After completion of adding namespaces you need to write the code like as shown below. AjaxFileUploadEventArgs e. GetFileName e. A non-positive value means the size is unlimited. The default is 0. MaximumNumberOfFiles - A maximum number of files in an upload queue.

Mode - How AjaxFileUpload displays a progress bar. The default is Auto. OnClientUploadComplete - The name of a JavaScript function executed on the client side after a file is uploaded successfully. The problem is that ajax control toolkit file upload control can upload files to server using hidden iFrame depending on what HTML5 features browser supports.

Hidden iFrame references to the same url as you page and that's why you page loaded once more but only to hidden iframe. That's why on server side during handling UploadComplete event you get that the text box has empty value because it is really have empty value because this is the state of the page which was loaded in iframe.

One of the solution to your problem is performing additional logic which depends on entered data after uploading is complete. To do this you can handle client side upload complete event and perform postback or ajax request manually. Other solution can be setting content of the hidden iFrame elements manually before upload will start. In this case you can get hidden iframe, found necessary HTML elements like text input in your case and set it value the same as it was entered by user.

But this approach can required extending logic of the ajax control toolkit upload control on client side.

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Toggle navigation. Net Interview Questions Asp. ActionLink Textbox Autocomplete Asp. AjaxFileUpload example to upload multiple files in asp.

ToString ; AjaxFileUpload1. Properties 1 Mode - Determines how upload progress is displayed. Methods 1 SaveAs string filename - Saves the contents of an uploaded file to the file system.

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