/// <summary>
/// 缺省窗口过程
/// </summary>
/// <param name="m">消息</param>
protected override void DefWndProc(ref Message m)
{
switch (m.Msg)
{
case WM_RUN:
{
this.MessageText = "正在下载Web文件 " + this.Url;
if (string.IsNullOrEmpty(this.TempFielname) == true)
this.TempFielname = Path.GetTempFileName();
MyWebClient webClient = new MyWebClient();
if (string.IsNullOrEmpty(this.IfModifySince) == false)
webClient.IfModifiedSince = this.IfModifySince;
webClient.DownloadFileCompleted += new AsyncCompletedEventHandler(webClient_DownloadFileCompleted);
webClient.DownloadProgressChanged += new DownloadProgressChangedEventHandler(webClient_DownloadProgressChanged);
try
{
webClient.DownloadFileAsync(new Uri(this.Url, UriKind.Absolute),
this.TempFielname, null);
while (true)
{
Application.DoEvents();
if (eventComplete.WaitOne(100) == true)
break;
}
}
catch (Exception ex)
{
// File.Delete(this.OutputFielname);
this.ErrorInfo = "下载 " + this.Url + " 时发生错误 :" + ex.Message;
this.Close();
return;
}
finally
{
if (webClient.ResponseHeaders != null)
this.LastModified = webClient.ResponseHeaders["Last-Modified"];
webClient.CancelAsync();
webClient.Dispose();
}
if (this.e == null
|| this.e.Cancelled == true)
{
try
{
File.Delete(this.TempFielname);
}
catch
{
}
this.ErrorInfo = "下载 " + this.Url + " 被取消";
}
if (this.e != null)
{
if (e.Error != null)
{
try
{
File.Delete(this.TempFielname);
}
catch
{
}
// TODO: 准备处理304响应
var webException = this.e.Error as WebException;
if (null != webException)
{
var httWebResponse = webException.Response as HttpWebResponse;
if (null != httWebResponse)
{
if (HttpStatusCode.NotModified == httWebResponse.StatusCode)
{
this.NotModified = true;
}
}
}
this.ErrorInfo = "下载 " + this.Url + " 过程发生错误: " + ExceptionUtil.GetExceptionMessage(this.e.Error);
}
else
{
File.Copy(this.TempFielname, this.OutputFilename, true);
try
{
File.Delete(this.TempFielname);
}
catch
{
}
}
}
this.Close();
}
return;
}
base.DefWndProc(ref m);
}
/// <summary>
/// 缺省窗口过程
/// </summary>
/// <param name="m">消息</param>
protected override void DefWndProc(ref Message m)
{
switch (m.Msg)
{
case WM_RUN:
{
this.MessageText = "正在下载Web文件 " + this.Url;
if (string.IsNullOrEmpty(this.TempFielname) == true)
{
this.TempFielname = Path.GetTempFileName();
}
MyWebClient webClient = new MyWebClient();
if (string.IsNullOrEmpty(this.IfModifySince) == false)
{
webClient.IfModifiedSince = this.IfModifySince;
}
webClient.DownloadFileCompleted += new AsyncCompletedEventHandler(webClient_DownloadFileCompleted);
webClient.DownloadProgressChanged += new DownloadProgressChangedEventHandler(webClient_DownloadProgressChanged);
try
{
webClient.DownloadFileAsync(new Uri(this.Url, UriKind.Absolute),
this.TempFielname, null);
while (true)
{
Application.DoEvents();
if (eventComplete.WaitOne(100) == true)
{
break;
}
}
}
catch (Exception ex)
{
// File.Delete(this.OutputFielname);
this.ErrorInfo = "下载 " + this.Url + " 时发生错误 :" + ex.Message;
this.Close();
return;
}
finally
{
if (webClient.ResponseHeaders != null)
{
this.LastModified = webClient.ResponseHeaders["Last-Modified"];
}
webClient.CancelAsync();
webClient.Dispose();
}
if (this.e == null ||
this.e.Cancelled == true)
{
try
{
File.Delete(this.TempFielname);
}
catch
{
}
this.ErrorInfo = "下载 " + this.Url + " 被取消";
}
if (this.e != null)
{
if (e.Error != null)
{
try
{
File.Delete(this.TempFielname);
}
catch
{
}
// TODO: 准备处理304响应
var webException = this.e.Error as WebException;
if (null != webException)
{
var httWebResponse = webException.Response as HttpWebResponse;
if (null != httWebResponse)
{
if (HttpStatusCode.NotModified == httWebResponse.StatusCode)
{
this.NotModified = true;
}
}
}
this.ErrorInfo = "下载 " + this.Url + " 过程发生错误: " + ExceptionUtil.GetExceptionMessage(this.e.Error);
}
else
{
File.Copy(this.TempFielname, this.OutputFilename, true);
try
{
File.Delete(this.TempFielname);
}
catch
{
}
}
}
this.Close();
}
return;
}
base.DefWndProc(ref m);
}