System download file

The address parameter is null. The fileName parameter is null. The DownloadFile method downloads to a local file data from the URI specified by in the address parameter. This method blocks while downloading the resource. To download a resource and continue executing while waiting for the server's response, use one of the DownloadFileAsync methods. If the QueryString property is not an empty string, it is appended to address.

This member outputs trace information when you enable network tracing in your application. For more information, see Network Tracing in. NET Framework. When using this method in a middle tier application, such as an ASP. NET page, you will receive an error if the account under which the application executes does not have permission to access the file.

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