ArcGIS Pro SDK running message only prompts once

Most tools are executed asynchronously, so the prompt information needs to be executed asynchronously before proceeding, so pay attention to the use of async and await.

For articles related to async and await, please check out C# to thoroughly understand async/await_c# async await-CSDN blog

public async Task InformationPrompt()
{
  string message = String.Empty;

  await ArcGIS.Desktop.Framework.Threading.Tasks.QueuedTask.Run(() =>
  {
      try
      {
        if(true){message = "true";}
        else{message = "false";}
        
      }
      catch (GeodatabaseException exObj)
      {
        message = exObj.Message;
      }
    }
  });

  if (!string.IsNullOrEmpty(message))
    MessageBox.Show(message);
}