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Search results for fileupload
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ASP.Net 2.0 has introduced server control for uploading files and images. ASP.Net also has new feature of default directories e.g. App_Code to separate classes or namespaces, App_Data to store Database file or other data related files like images.
The ASP.Net FileUpload control is new web server control in ASP.Net 2.0 framework that provides the advanced functionality to the users to send a file from their computer system to the online web server. It renders using HTML input type file control that appears as combination of two controls such as TextBox control and a Button control.
The PostedFile property of ASP.Net FileUpload control provides an object of HttpPostedFile class that points to the file uploaded by the control. The FileUpload control does not starts the file caching on the server automatically it need a specific code to upload the file and save it on the web server hard disk.
The File size limit validation is required for ASP.Net FileUpload control as a security feature to protect the web server being dominated by the spammers by uploading large files that kill the server cache available for loading the web pages hosted on it. The FileUpload control does not provide any in-built controlled way for applying the limit over the file size
The ASP.Net FileUpload control does not have any property to provide the functionality to filter the valid/invalid file types in the file-navigation dialog box that opens when user clicks the browse button of fileupload control. You can implement the File Type filter for FileUpload control using JavaScript client side code.
The ASP.Net FileUpload control does not provide any in-built method to customize the file type filter dropdown of file-navigation dialog box to a specific file type. Like we applied JavaScript Code in the previous tutorial here we will create the similar server side code using C#.
FileUpload Control Validation
Save Images into Sql Server Database Table using asp.net FileUpload Control
ASP.NET: How to Upload Files with the FileUpload Web Server Control
ASP.NET: FileUpload Web Server Control Overview
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