public static CheckablePatternDataViewModel ToCheckable(this PatternDataViewModel source, ItemState state)
{
return(new CheckablePatternDataViewModel(source, state));
}
public CheckablePatternDataViewModel(PatternDataViewModel viewModel)
: base(viewModel.Name, viewModel.PatternType, viewModel.Data)
{
Id = viewModel.Id;
}
public CheckablePatternDataViewModel(PatternDataViewModel viewModel, ItemState state)
: this(viewModel)
{
State = state;
}
private void AddPatterns()
{
OpenFileDialog fileDialog = new OpenFileDialog()
{
CheckFileExists = true,
CheckPathExists = true,
Multiselect = true,
Filter = "JPEG Files (*.jpeg)|*.jpeg|PNG Files (*.png)|*.png|JPG Files (*.jpg)|*.jpg"
};
Func <string, bool> isValidFile = file =>
{
string[] extensions =
{
".png",
".jpeg",
".jpg"
};
string ext = Path.GetExtension(file);
return(extensions.Contains(ext));
};
fileDialog.FileOk += (sender, args) =>
{
if (!fileDialog.FileNames.All(isValidFile))
{
args.Cancel = true;
}
};
bool?dialogResult = fileDialog.ShowDialog();
if (dialogResult.HasValue && dialogResult.Value)
{
try
{
Stream[] files = fileDialog.OpenFiles();
for (int i = 0; i < fileDialog.FileNames.Length; i++)
{
string filePath = fileDialog.FileNames[i];
Stream file = files[i];
byte[] fileData = null;
using (var stream = new MemoryStream())
{
file.CopyTo(stream);
fileData = stream.ToArray();
}
CheckablePatternDataViewModel viewModel = new PatternDataViewModel(Path.GetFileName(filePath), Pattern.PatternType, fileData)
.ToCheckable(ItemState.Added);
Children.Add(viewModel);
}
}
catch (Exception ex)
{
}
CheckItem();
}
}