public DownloadFileDlg(long fileId, string fileHash, string fileName)
{
InitializeComponent();
this.FileId = fileId;
this.FileHash = Commons.NotBlank(fileHash, "fileHash").Trim();
this.FileName = Commons.NotBlank(fileName, "fileName").Trim();
this.label2.Text = string.Format(Properties.Resources.DownloadFileDlg_Downloading, this.FileName);
}