private static async Task <PpsObject> AppendAsync(IPpsAttachments attachments, PpsEnvironment environment, Func <Task <PpsObject> > createObject)
{
// every file one transaction, and exception handling
using (var trans = await environment.MasterData.CreateTransactionAsync(PpsMasterDataTransactionLevel.Write))
{
var obj = await createObject();
attachments.Append(obj);
trans.Commit();
return(obj);
}
} // func AppendAsync
private void OnAttachmentsSourceChanged(IPpsAttachments newValue, IPpsAttachments oldValue)
{
zusaList.ItemsSource = newValue;
} // proc OnAttachmentsSourceChanged
/// <summary>Append a stream to the attachemnts list</summary> /// <param name="attachments"></param> /// <param name="environment"></param> /// <param name="source"></param> /// <param name="name"></param> /// <param name="mimeType"></param> /// <returns></returns> public static Task <PpsObject> AppendAsync(this IPpsAttachments attachments, PpsEnvironment environment, Stream source, string name, string mimeType) => AppendAsync(attachments, environment, () => environment.CreateNewObjectFromStreamAsync(source, name, mimeType));
} // func AppendAsync
/// <summary>Append a file to the attachments list.</summary>
/// <param name="attachments"></param>
/// <param name="environment"></param>
/// <param name="fileName"></param>
/// <returns></returns>
public static Task <PpsObject> AppendAsync(this IPpsAttachments attachments, PpsEnvironment environment, string fileName)
=> AppendAsync(attachments, environment, () => environment.CreateNewObjectFromFileAsync(fileName));
