Gets the number of bytes sent.
Assembly: System (in System.dll)
Uploading data to a server may result in a download from the server. For example, suppose your application uploads a POST request to a Web server. The resulting download will update BytesReceived and TotalBytesToReceive.
To determine what percentage of the transfer has occurred, use the ProgressPercentage property. When the upload is complete, ProgressPercentage will be 50%. When the download completes, ProgressPercentage will be 100%.