void UploadFiles()
{
while (m_files.Count(f => f.Status == UploadStatus.Uploading) < MaxConcurrentUploads && Uploading)
{
if (m_files.Count(f => f.Status != UploadStatus.Complete && f.Status != UploadStatus.Uploading && f.Status != UploadStatus.Error) > 0)
{
UploadClient fu = m_files.FirstOrDefault(f => f.Status != UploadStatus.Complete && f.Status != UploadStatus.Uploading);
if (fu != null)
{
if (this.EachFilePreStartUpload != null)
{
this.EachFilePreStartUpload(this, new UploadPreStartEventArgs(fu.File.Name, fu.File));
}
fu.Upload();
}
}
else if (m_files.Count(f => f.Status == UploadStatus.Uploading) == 0)
{
Uploading = false;
m_uploadFilesButton.Content = ResUploader.Uploader_UploadFiles;
}
else
{
break;
}
}
}
void upload_StatusChanged(object sender, EventArgs e)
{
UploadClient fu = sender as UploadClient;
if (fu.Status == UploadStatus.Complete)
{
if (Uploading)
{
UploadFiles();
}
}
else if (fu.Status == UploadStatus.Removed)
{
m_files.Remove(fu);
m_count--;
if (m_files.Count == 0)
{
this.m_borderBackground.Visibility = System.Windows.Visibility.Visible;
}
if (Uploading)
{
UploadFiles();
}
}
else if (fu.Status == UploadStatus.Uploading && m_files.Count(f => f.Status == UploadStatus.Uploading) < MaxConcurrentUploads)
{
UploadFiles();
}
}
void FileUploadRowControl_Loaded(object sender, RoutedEventArgs e)
{
UploadClient fu = DataContext as UploadClient;
fu.PropertyChanged += new System.ComponentModel.PropertyChangedEventHandler(fu_PropertyChanged);
LoadImage(fu);
}
void m_removeBtn_Click(object sender, RoutedEventArgs e)
{
UploadClient fu = DataContext as UploadClient;
if (fu != null)
{
fu.RemoveUpload();
}
}
void fu_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
{
UploadClient fu = sender as UploadClient;
if (e.PropertyName == "DisplayThumbnail")
{
LoadImage(fu);
}
else if (e.PropertyName == "Status")
{
switch (fu.Status)
{
case UploadStatus.Pending:
VisualStateManager.GoToState(this, "Pending", true);
break;
case UploadStatus.Uploading:
VisualStateManager.GoToState(this, "Uploading", true);
break;
case UploadStatus.Complete:
VisualStateManager.GoToState(this, "Complete", true);
break;
case UploadStatus.Error:
VisualStateManager.GoToState(this, "Error", true);
break;
case UploadStatus.Canceled:
VisualStateManager.GoToState(this, "Pending", true);
break;
case UploadStatus.Canceling:
VisualStateManager.GoToState(this, "Pending", true);
break;
case UploadStatus.Removed:
VisualStateManager.GoToState(this, "Pending", true);
break;
default:
break;
}
}
}
private void LoadImage(UploadClient fu)
{
if (fu != null && fu.DisplayThumbnail)
{
try
{
if ((fu.Name.ToLower().EndsWith("jpg") || fu.Name.ToLower().EndsWith("jpeg") || fu.Name.ToLower().EndsWith("png")))
{
BitmapImage imageSource = new BitmapImage();
using (var stream = fu.File.OpenRead())
{
imageSource.SetSource(stream);
}
m_previewImage.Source = imageSource;
m_previewImage.Visibility = Visibility.Visible;
}
else if (fu.Name.ToLower().EndsWith("gif"))
{
GifImage gif = null;
using (var stream = fu.File.OpenRead())
{
gif = GIFDecoder.Decode(stream);
if (gif.Frames.Count > 0)
{
m_previewImage.Source = gif.Frames[0].Image;
m_previewImage.Visibility = Visibility.Visible;
}
}
}
}
catch (Exception e)
{
string message = e.Message;
}
}
else
{
Dispatcher.BeginInvoke(() =>
{
m_previewImage.Visibility = Visibility.Collapsed;
});
}
}
void m_addFilesButton_Click(object sender, RoutedEventArgs e)
{
OpenFileDialog dlg = new OpenFileDialog();
dlg.Filter = Filter;
dlg.Multiselect = MultiSelect;
if (!MultiUpload)
{
dlg.Multiselect = false;
}
if ((bool)dlg.ShowDialog())
{
if (!MultiUpload)
{
m_files.Clear();
}
if (CheckUploadFilesEvent != null)
{
CheckUploadFileEventArgs checkArgs = new CheckUploadFileEventArgs(new List <FileInfo>(dlg.Files));
CheckUploadFilesEvent(this, checkArgs);
if (checkArgs.CheckResult == false)
{
return;
}
}
BitmapSource imageSource = null;
foreach (FileInfo file in dlg.Files)
{
string fileName = file.Name.ToLower().Trim();
var suffix = file.Extension;
//如果文件没有后缀名，需要提示User
if (string.IsNullOrEmpty(suffix))
{
this.ShowMessage(ResUploader.Uploader_InvalidFileExtension, Newegg.Oversea.Silverlight.Controls.Components.MessageType.Warning);
continue;
}
if (!this.Filter.Contains("*.*") && !this.Filter.ToLower().Contains(suffix.ToLower()))
{
this.ShowMessage(ResUploader.Uploader_InvalidFileExtension, Newegg.Oversea.Silverlight.Controls.Components.MessageType.Warning);
continue;
}
try
{
using (file.OpenRead())
{
if (fileName.EndsWith("jpg") || fileName.EndsWith("jpeg") || fileName.EndsWith("png"))
{
imageSource = new BitmapImage();
using (var stream = file.OpenRead())
{
try
{
imageSource.SetSource(stream);
}
catch
{
//捕获特定异常，比如把a.xls改成a.jpg,此时需要给一个友好提示
this.ShowMessage(ResUploader.Uploader_InvalidImageType, Newegg.Oversea.Silverlight.Controls.Components.MessageType.Warning);
continue;
}
}
}
else if (fileName.EndsWith("gif"))
{
GifImage gif = null;
using (var stream = file.OpenRead())
{
try
{
gif = GIFDecoder.Decode(stream);
}
catch
{
//捕获特定异常，比如把a.jpg改成a.gif,此时需要给一个友好提示
this.ShowMessage(ResUploader.Uploader_InvalidImageType, Newegg.Oversea.Silverlight.Controls.Components.MessageType.Warning);
continue;
}
if (gif.Frames.Count > 0)
{
imageSource = gif.Frames[0].Image;
}//如果user把jpg文件的后缀修改为.gif,需要抛异常提示User
else
{
this.ShowMessage(ResUploader.Uploader_InvalidImageType, Newegg.Oversea.Silverlight.Controls.Components.MessageType.Warning);
continue;
}
}
}
}
}//检查文件是否正在使用
catch (IOException)
{
this.ShowMessage(ResUploader.Uploader_FileInUsed, Newegg.Oversea.Silverlight.Controls.Components.MessageType.Error);
continue;
}
//Catch other exception
catch (Exception ex)
{
this.ShowMessage(ex.Message, Newegg.Oversea.Silverlight.Controls.Components.MessageType.Error);
continue;
}
//check image width and height
if (this.DimensionsMatch != DimensionsMatchType.None)
{
if (fileName.EndsWith("jpg") || fileName.EndsWith("png") || fileName.EndsWith("gif") ||
fileName.EndsWith("jpeg") || fileName.EndsWith("bmp"))
{
try
{
if (imageSource != null)
{
CheckImageDimensions(imageSource, file);
}
}
// Catch check exception
catch (ArgumentException ex)
{
this.ShowMessage(ex.Message, Newegg.Oversea.Silverlight.Controls.Components.MessageType.Warning);
continue;
}
}
}
UploadClient upload = new UploadClient(this.Dispatcher, UploadUrl, file, this);
upload.UploadCanceled += (o, b) =>
{
if (this.UploadCanceled != null)
{
UploadCanceled(this, b);
}
};
if (UploadChunkSize > 0)
{
upload.ChunkSize = UploadChunkSize;
}
if (MaximumFileNameLength > 0 && upload.File.Name.Length > MaximumFileNameLength)
{
this.ShowMessage(string.Format(ResUploader.Uploader_GreaterThanMaximumFileNameLength, upload.Name, upload.File.Name.Length, this.MaximumFileNameLength), Newegg.Oversea.Silverlight.Controls.Components.MessageType.Warning);
continue;
}
//单个文件超过限制的大小
if (MaximumUploadBytes >= 0 && upload.FileLength > MaximumUploadBytes)
{
this.ShowMessage(string.Format(ResUploader.Uploader_OutOfSingleAvailableUploadSize, upload.Name, this.MaximumUploadSize), Newegg.Oversea.Silverlight.Controls.Components.MessageType.Warning);
continue;
}
//全部的文件Size超过限制大小
if (MaximumTotalUploadBytes >= 0 && TotalUploadSize + upload.FileLength > MaximumTotalUploadBytes)
{
this.ShowMessage(string.Format(ResUploader.Uploader_OutOfTotalAvailableUploadSize, this.MaximumTotalUploadSize), Newegg.Oversea.Silverlight.Controls.Components.MessageType.Warning);
break;
}
//多文件上传的时候才作此Check
if (MaxNumberToUpload > -1 && MultiUpload)
{
if (++m_count > MaxNumberToUpload)
{
this.ShowMessage(string.Format(ResUploader.Uploader_OutOfMaximumNumber, this.MaxNumberToUpload), Newegg.Oversea.Silverlight.Controls.Components.MessageType.Warning);
break;
}
}
upload.DisplayThumbnail = (bool)this.m_displayThumbailCheckBox.IsChecked;
if (!this.AllowThumbnail)
{
upload.DisplayThumbnail = false;
}
upload.StatusChanged += new EventHandler(upload_StatusChanged);
upload.UploadProgressChanged += new ProgressChangedEvent(upload_UploadProgressChanged);
upload.UploadCompleted += new UploadCompletedEvent(upload_UploadCompleted);
m_files.Add(upload);
this.m_borderBackground.Visibility = System.Windows.Visibility.Collapsed;
}
}
}