internal static string ToJson(BufferParam param)
{
if (param == null)
{
return null;
}
string json = "{";
List<string> list = new List<string>();
list.Add(string.Format("\"distance\":{0}", param.Distance));
list.Add(string.Format("\"fromCustomGeo\":{0}", param.FromCustomGeo.ToString().ToLower()));
if (param.FromLayer != null)
{
list.Add(string.Format("\"fromLayer\":{0}", QueryLayer.ToJson(param.FromLayer)));
}
else
{
list.Add(string.Format("\"fromLayer\":null"));
}
//外边让用户设置Geometry，但在内部要将其转为ServerGeometry
if (param.Geometries != null && param.Geometries.Count > 0)
{
List<string> temp = new List<string>();
for (int i = 0; i < param.Geometries.Count; i++)
{
temp.Add(ServerGeometry.ToJson(param.Geometries[i].ToServerGeometry()));
}
list.Add(string.Format("\"geometries\":[{0}]", string.Join(",", temp.ToArray())));
}
else
{
list.Add("\"geometries\":null");
}
list.Add(string.Format("\"queryMode\":{0}", (int)param.QueryMode));
list.Add(string.Format("\"smoothness\":{0}", param.Smoothness));
json += string.Join(",", list.ToArray());
json += "}";
return json;
}
//设置缓冲区查询参数
private void Button_Click(object sender, RoutedEventArgs e)
{
BufferQueryParameters parameters = new BufferQueryParameters();
//几何对象缓冲区查询
if (BufferQuery.IsChecked == true)
{
BufferParam bufferParam = new BufferParam()
{
Distance = 500,
FromCustomGeo = true,
Geometries = geometries,
Smoothness = 12,
QueryMode = SpatialQueryMode.AreaIntersect,
ReturnBufferResult = true
};
QueryLayer queriedLayer = new QueryLayer();
queriedLayer.LayerName = QueriedComboBox.SelectionBoxItem.ToString();
QueryParam queryParam = new QueryParam() { QueryLayers = new List<QueryLayer> { queriedLayer } };
parameters = new BufferQueryParameters() { MapName = "changchun", QueryParam = queryParam, BufferParam = bufferParam };
}
//地物缓冲区查询
else
{
QueryLayer queryLayer = new QueryLayer();
queryLayer.LayerName = QueryComboBox.SelectionBoxItem.ToString();
queryLayer.WhereClause = queryText.Text;
BufferParam bufferParam = new BufferParam()
{
FromLayer = queryLayer,
Distance = 500,
FromCustomGeo = false,
Smoothness = 12,
QueryMode = SpatialQueryMode.AreaIntersect,
ReturnBufferResult = true
};
QueryLayer queriedLayer = new QueryLayer();
queriedLayer.LayerName = QueriedComboBox.SelectionBoxItem.ToString();
QueryParam queryParam = new QueryParam() { QueryLayers = new List<QueryLayer> { queriedLayer } };
parameters = new BufferQueryParameters() { MapName = "changchun", QueryParam = queryParam, BufferParam = bufferParam };
}
BufferQueryService bufferQueryService = new BufferQueryService("http://localhost/IS/AjaxDemo");
bufferQueryService.ProcessAsync(parameters);
bufferQueryService.Failed += new EventHandler<ServiceFailedEventArgs>(Service_Failed);
bufferQueryService.ProcessCompleted += new EventHandler<BufferQueryEventArgs>(bufferQueryService_ProcessCompleted);
resultLayer.MouseLeftButtonDown += new EventHandler<FeatureMouseButtonEventArgs>(resultLayer_MouseLeftButtonDown);
}
private string GetQueryStr(BufferParam bufferParam, QueryParam queryParam)
{
if (bufferParam != null && queryParam != null)
{
List<string> temp = new List<string>();
temp.Add("\"bufferDistance\":" + bufferParam.Distance.ToString(CultureInfo.InvariantCulture));
temp.Add("\"bufferSmoothness\":" + bufferParam.Smoothness.ToString(CultureInfo.InvariantCulture));
//temp.Add("\bufferSourceHighlight\":"+queryParam.he)
temp.Add("\"queryMode\":" + ((int)bufferParam.QueryMode).ToString(CultureInfo.InvariantCulture));
temp.Add("\"queryParam\":" + QueryParam.ToJson(queryParam));
temp.Add("\"returnBufferResult\":" + bufferParam.ReturnBufferResult.ToString(CultureInfo.InvariantCulture).ToLower(CultureInfo.InvariantCulture));
string str = "{" + string.Format("{0}", string.Join(",", temp.ToArray())) + "}";
return str;
}
else
{
return string.Empty;
}
}