private async Task NotifyCpsProjectSystemAsync(
IProjectItemDesignerTypeUpdateService updateService,
DesignerAttributeData data,
CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
try
{
await updateService.SetProjectItemDesignerTypeAsync(data.FilePath, data.Category).ConfigureAwait(false);
}
catch (ObjectDisposedException)
{
// we might call update service after project is already removed and get object disposed exception.
// we will catch the exception and ignore.
// see this PR for more detail - https://github.com/dotnet/roslyn/pull/35383
}
}
private void NotifyLegacyProjectSystemOnUIThread(
IVSMDDesignerService designerService,
IVsHierarchy hierarchy,
DesignerAttributeData data)
{
this.AssertIsForeground();
var itemId = hierarchy.TryGetItemId(data.FilePath);
if (itemId == VSConstants.VSITEMID_NIL)
{
return;
}
// PERF: Avoid sending the message if the project system already has the current value.
if (ErrorHandler.Succeeded(hierarchy.GetProperty(itemId, (int)__VSHPROPID.VSHPROPID_ItemSubType, out var currentValue)))
{
var currentStringValue = string.IsNullOrEmpty(currentValue as string) ? null : (string)currentValue;
if (string.Equals(currentStringValue, data.Category, StringComparison.OrdinalIgnoreCase))
{
return;
}
}
try
{
designerService.RegisterDesignViewAttribute(
hierarchy, (int)itemId, dwClass: 0,
pwszAttributeValue: data.Category);
}
catch
{
// DevDiv # 933717
// turns out RegisterDesignViewAttribute can throw in certain cases such as a file failed to be checked out by source control
// or IVSHierarchy failed to set a property for this project
//
// just swallow it. don't crash VS.
}
}
