SuperMap.Web.iServerJava6R.SpatialAnalyst.DatasetBufferAnalystService.ProcessAsync C# (CSharp) Method

        public void ProcessAsync(DatasetBufferAnalystParameters parameters)
        {
            ProcessAsync(parameters, null);
        }

 private void DatasetBufferAnalyst_Click(object sender, RoutedEventArgs e)
 {
     DatasetBufferAnalystParameters param = new DatasetBufferAnalystParameters
     {
         BufferSetting = new BufferSetting
         {
             EndType = BufferEndType.ROUND,
             LeftDistance = new BufferDistance 
             {
                 Value =Convert.ToDouble(MyTextBox.Text)
             },
             SemicircleLineSegment = 12,
             
         },
         FilterQueryParameter = new SuperMap.Web.iServerJava6R.FilterParameter
         {
             AttributeFilter = "SmID=19"
         },
         Dataset = "Landuse_R@Jingjin",
         
     };
     DatasetBufferAnalystService datasetBufferAnalyst = new DatasetBufferAnalystService(url2);
     datasetBufferAnalyst.ProcessAsync(param);
     datasetBufferAnalyst.Failed += new EventHandler<ServiceFailedEventArgs>(datasetBufferAnalyst_Failed);
     datasetBufferAnalyst.ProcessCompleted += new EventHandler<DatasetBufferAnalystArgs>(datasetBufferAnalyst_ProcessCompleted);
 }