wb.DownloadFileAsync throw “WebClient does not support concurrent I/O operations.” exception
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I need help with this code #region Events public class DownloadProgressChangedEventArg { private long _ProgressPercentage; private long _BytesReceived; private long _TotalBytesToReceive; public DownloadProgressChangedEventArg(long BytesReceived, long TotalBytesToReceive) { _BytesReceived = BytesReceived; _TotalBytesToReceive = TotalBytesToReceive; _ProgressPercentage = BytesReceived * 100 / (TotalBytesToReceive); } public long BytesReceived { get { return _BytesReceived; } set { _BytesReceived = value; } } public long ProgressPercentage { get { return _ProgressPercentage; } set {