/// <summary>
/// 检查文件信息。
/// </summary>
private void btnCheck_Click(object sender, EventArgs e)
{
// 初始化 MultiThreadedWebDownloader。
downloader = new MultiThreadedWebDownloader(tbURL.Text);
downloader.Proxy = this.proxy;
try
{
downloader.CheckFile();
//更新UI界面。
tbURL.Enabled = false;
btnCheck.Enabled = false;
tbPath.Enabled = true;
btnDownload.Enabled = true;
}
catch
{
// 如果有任何的异常，像System.Net.WebException 或者
// System.Net.ProtocolViolationException, 就说明读取文件信息时有错误，
//并且该文件是不能被下载的。
MessageBox.Show("获取文件信息有错误."
+ " 请确保URL是有效的！");
}
}
/// <summary>
/// Check the file information.
/// </summary>
private void btnCheck_Click(object sender, EventArgs e)
{
// Initialize an instance of MultiThreadedWebDownloader.
downloader = new MultiThreadedWebDownloader(tbURL.Text);
downloader.Proxy = this.proxy;
// Register the events of HttpDownloadClient.
downloader.DownloadCompleted += DownloadCompleted;
downloader.DownloadProgressChanged += DownloadProgressChanged;
downloader.StatusChanged += StatusChanged;
try
{
string filename = string.Empty;
downloader.CheckUrl(out filename);
if (string.IsNullOrEmpty(filename))
{
this.DownloadPath = string.Format("{0}\\{1}",
Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments),
downloader.Url.Segments.Last());
}
else
{
this.DownloadPath = string.Format("{0}\\{1}",
Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments),
filename);
}
// Update the UI.
tbURL.Enabled = false;
btnCheck.Enabled = false;
tbPath.Enabled = true;
btnDownload.Enabled = true;
}
catch
{
// If there is any exception, like System.Net.WebException or
// System.Net.ProtocolViolationException, it means that there may be an
// error while reading the information of the file and it cannot be
// downloaded.
MessageBox.Show("There is an error while get the information of the file."
+ " Please make sure the url is accessible.");
}
}
/// <summary>
/// 检查文件信息。
/// </summary>
private void btnCheck_Click(object sender, EventArgs e)
{
// 初始化 MultiThreadedWebDownloader。
downloader = new MultiThreadedWebDownloader(tbURL.Text);
downloader.Proxy = this.proxy;
try
{
downloader.CheckFile();
//更新UI界面。
tbURL.Enabled = false;
btnCheck.Enabled = false;
tbPath.Enabled = true;
btnDownload.Enabled = true;
}
catch
{
// 如果有任何的异常，像System.Net.WebException 或者
// System.Net.ProtocolViolationException, 就说明读取文件信息时有错误，
//并且该文件是不能被下载的。
MessageBox.Show("获取文件信息有错误."
+ " 请确保URL是有效的！");
}
}
