//服务器返回查询结果
private void bufferQueryService_ProcessCompleted(object sender, BufferQueryEventArgs e)
{
if (e.BufferResultSet == null || e.BufferResultSet.ResultSet.RecordSets == null || e.BufferResultSet.ResultSet.RecordSets.Count < 0)
{
MessageBox.Show("查询结果为空!");
return;
}
else
{
MyDataGrid.Visibility = Visibility.Visible;
//将指定查询图层的查询结果加载到矢量图层中
foreach (RecordSet item in e.BufferResultSet.ResultSet.RecordSets)
{
resultLayer.AddFeatureSet(item.ToFeatureSet());
}
//将查询到的地物赋予用户自定义的样式
foreach (Feature item in resultLayer.Features)
{
if (item.Geometry is GeoLine)
{
item.Style = LineSelectStyle;
}
else if (item.Geometry is GeoRegion)
{
item.Style = SelectStyle;
}
else
{
item.Style = new PredefinedMarkerStyle() { Color = new SolidColorBrush(Colors.Blue), Size = 20, Symbol = PredefinedMarkerStyle.MarkerSymbol.Diamond };
}
}
//将指定查询图层的查询缓冲区域加载到矢量图层中
Feature buffer = new Feature
{
Geometry = e.BufferResultSet.BufferRegion,
};
resultLayer.AddFeature(buffer);
}
}
private void request_Completed(object sender, RequestEventArgs e)
{
JsonObject jsonObject = (JsonObject)JsonObject.Parse(e.Result);
BufferResultSet result = BufferResultSet.FromJson(jsonObject);
LastResult = result;
BufferQueryEventArgs args = new BufferQueryEventArgs(result, e.Result, e.UserState);
OnProcessCompleted(args);
}
private void OnProcessCompleted(BufferQueryEventArgs args)
{
if (ProcessCompleted != null)
{
Application.Current.RootVisual.Dispatcher.BeginInvoke(
ProcessCompleted, new object[] { this, args });
}
}