C#•11mo ago

❔ Guid from TappedEventArgs

For the TapGestureRecognizer event handler I am passing in a GUID. I have not figured out how to convert the TappedEventArgs.Parameter to a GUID:

protected async void OnItemSelected(object sender, TappedEventArgs args)
{
    Guid guid = args.Parameter as Guid;
}

protected async void OnItemSelected(object sender, TappedEventArgs args)
{
    Guid guid = args.Parameter as Guid;
}

Any help is appreciated.

4 Replies

r2d25551•11mo ago

protected async void OnItemSelected(object sender, TappedEventArgs args)
string guidStr = args.Parameter.ToString();
if (string.IsNullOrEmpty(guidStr)) return;
Guid guid = Guid.Empty;
Guid.TryParse(guidStr, out guid);

protected async void OnItemSelected(object sender, TappedEventArgs args)
string guidStr = args.Parameter.ToString();
if (string.IsNullOrEmpty(guidStr)) return;
Guid guid = Guid.Empty;
Guid.TryParse(guidStr, out guid);

Mayor McCheese•11mo ago

What type is Parameter?

protected async void OnItemSelected(object sender, TappedEventArgs args)
{
  if(!string.IsNullOrWhiteSpace(args.Parameter) && Guid.TryParse(guidStr, out var guid))
  {
    // This is now a valid guid
  }

protected async void OnItemSelected(object sender, TappedEventArgs args)
{
  if(!string.IsNullOrWhiteSpace(args.Parameter) && Guid.TryParse(guidStr, out var guid))
  {
    // This is now a valid guid
  }

r2d25551•11mo ago

Funny, debugger shows object {System.Guid} as I thought it should be:

args.Parameter   {966ebbb6-124e-4044-a788-1f927c9a4107}   object {System.Guid}

args.Parameter   {966ebbb6-124e-4044-a788-1f927c9a4107}   object {System.Guid}

Accord•11mo ago

Was this issue resolved? If so, run /close - otherwise I will mark this as stale and this post will be archived until there is new activity.

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❔ Guid from TappedEventArgs