private void LoadImage(FileUpload 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 SetSprite(string path, Image image)
{
if (File.Exists(path))
{
byte[] bytes = File.ReadAllBytes(path);
Texture2D tex = null;
if (bytes[0] == 'G' && bytes[1] == 'I' && bytes[2] == 'F')
{
tex = GIFDecoder.Decode(bytes, false);
}
else
{
tex = new Texture2D(1, 1, TextureFormat.ARGB32, false);
tex.LoadImage(bytes);
}
if (tex != null)
{
Sprite sprite = Sprite.Create(tex, new Rect(0, 0, tex.width, tex.height), Vector2.zero);
image.sprite = sprite;
}
}
}
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(MessageResource.Uploader_InvalidFileExtension, Newegg.Oversea.Silverlight.Controls.Components.MessageType.Warning);
continue;
}
if (!this.Filter.Contains("*.*") && !this.Filter.ToLower().Contains(suffix.ToLower()))
{
this.ShowMessage(MessageResource.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(MessageResource.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(MessageResource.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(MessageResource.Uploader_InvalidImageType, Newegg.Oversea.Silverlight.Controls.Components.MessageType.Warning);
continue;
}
}
}
}
}//检查文件是否正在使用
catch (IOException)
{
this.ShowMessage(MessageResource.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;
}
}
}
FileUpload upload = new FileUpload(this.Dispatcher, UploadUrl, file, this);
upload.UploadCanceled += (o, b) =>
{
if (this.UploadCanceled != null)
{
UploadCanceled(this, b);
}
};
upload.CanEditFileName = CanEditFileName;
if (UploadChunkSize > 0)
{
upload.ChunkSize = UploadChunkSize;
}
if (MaximumFileNameLength > 0 && upload.File.Name.Length > MaximumFileNameLength)
{
this.ShowMessage(string.Format(MessageResource.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(MessageResource.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(MessageResource.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(MessageResource.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;
}
}
}
private void hbAddImage_Click(object sender, RoutedEventArgs e)
{
OpenFileDialog openDialog = new OpenFileDialog();
if (openDialog.ShowDialog() == true)
{
using (Stream stream = openDialog.File.OpenRead())
{
// Don't allow big files.
if (stream.Length > 5000000)
{
MessageBox.Show("图片尺寸必须小于5MB.");
}
else
{
////BitmapImage image = new BitmapImage();
////byte[] data = new byte[stream.Length];
////stream.Read(data, 0, (int)stream.Length);
////tmpImageName = openDialog.File.Name.ToString();
////tmpImageStream = data;
////image.SetSource(stream);
////imgLoad.Source = image;
////imgLoad.Visibility = Visibility.Visible;
////stream.Close();
string fileExtension = System.IO.Path.GetExtension(openDialog.File.Name.ToString());
BitmapImage image = new BitmapImage();
byte[] data = new byte[stream.Length];
//stream.Read(data, 0, (int)stream.Length);
//tmpImageName = openDialog.File.Name.ToString();
//tmpImageStream = data;
////image.SetSource(stream);
////imgOwner.Source = image;
//stream.Close();
GifImage tmpgif = null;
if (fileExtension == ".gif")
{
//stream.Read(data, 0, (int)stream.Length);
//ExtendedImage extendedImage = new ExtendedImage();
//extendedImage.SetSource(stream);
//cusImage.Source = extendedImage;
tmpgif = GIFDecoder.Decode(stream);
tmpImageName = openDialog.File.Name.ToString();
for (int count = 0; count < tmpgif.Frames.Count; count++)
{
imgLoad.Source = tmpgif.Frames[count].Image;
imgLoad.Visibility = Visibility.Visible;
//imgOwner.Source = tmpgif.Frames[count].Image;
//image.SetSource(imgOwner.Source);
}
//byte[] data = new byte[stream.Length];
stream.Read(tmpgif.GlobalColorTable, 0, (int)tmpgif.GlobalColorTable.Length);
tmpImageStream = tmpgif.GlobalColorTable;
//image.SetSource(stream);
}
else
{
stream.Read(data, 0, (int)stream.Length);
tmpImageName = openDialog.File.Name.ToString();
tmpImageStream = data;
image.SetSource(stream);
imgLoad.Source = image;
imgLoad.Visibility = Visibility.Visible;
}
stream.Close();
}
}
}
}