/// <summary>${IS6_QueryByCenterService_method_ProcessAsync_D}</summary>
/// <param name="parameters">${IS6_QueryByCenterService_method_ProcessAsync_param_parameters}</param>
/// <param name="state">${IS6_QueryByCenterService_method_ProcessAsync_param_state}</param>
public void ProcessAsync(QueryByCenterParameters parameters, object state)
{
if (parameters == null)
{
//TODO:资源
// throw new ArgumentNullException("QueryByCenterParamters is Null");
throw new ArgumentNullException(ExceptionStrings.ArgumentIsNull);
}
if (string.IsNullOrEmpty(this.Url))
{
//TODO:资源
//throw new InvalidOperationException("Url is not set");
throw new InvalidOperationException(ExceptionStrings.InvalidUrl);
}
base.SubmitRequest(base.Url + "/query.ashx?", GetParameters(parameters),
new EventHandler<RequestEventArgs>(request_Completed), state, false);
}
//中心点查询
private void point_DrawCompleted(object sender, DrawEventArgs e)
{
QueryParam queryParam = new QueryParam();
QueryLayer queryLayer = new QueryLayer();
queryLayer.LayerName = comboBox.SelectionBoxItem.ToString();
List<QueryLayer> queryLayers = new List<QueryLayer> { queryLayer };
queryParam = new QueryParam()
{
ExpectCount = 0,
QueryLayers = queryLayers,
StartRecord = 0
};
//将文本中读取的容限值转换为Double类型，如果值为0则将其设为100
double tolerance;
if (!double.TryParse(MyTextBox.Text, out tolerance))
{
tolerance = 100;
}
QueryByCenterParameters parameters = new QueryByCenterParameters
{
MapName = "changchun",
CenterPoint = e.Geometry.Bounds.Center,
Tolerance = tolerance,
QueryParam = queryParam
};
if (FindNearest.IsChecked == true)
{
parameters.IsNearest = true;
}
//与服务器交互
QueryByCenterService query = new QueryByCenterService("http://localhost/IS/AjaxDemo");
query.ProcessAsync(parameters);
query.Failed += new EventHandler<ServiceFailedEventArgs>(query_Failed);
query.ProcessCompleted += new EventHandler<QueryServiceEventArgs>(query_ProcessCompleted);
featuresLayer.MouseLeftButtonDown+=new EventHandler<FeatureMouseButtonEventArgs>(featuresLayer_MouseLeftButtonDown);
}
private void point_DrawCompleted(object sender, DrawEventArgs e)
{
Pushpin pushPin = new Pushpin();
pushPin.Location = e.Geometry.Bounds.Center;
elementsLayer.AddChild(pushPin);
QueryByCenterParameters queryParameters = new QueryByCenterParameters()
{
MapName = "changchun",
Tolerance = 100,
IsNearest = true,
QueryParam = new QueryParam()
{
QueryAllLayer = false,
QueryLayers = new List<QueryLayer>() { new QueryLayer() { LayerName = "RoadNet@changchun" } },
HasGeometry = true,
ReturnShape = true,
ExpectCount = 1,
}
};
queryParameters.CenterPoint = e.Geometry.Bounds.Center;
QueryByCenterService queryService = new QueryByCenterService("http://localhost/IS/AjaxDemo");
queryService.ProcessAsync(queryParameters);
queryService.ProcessCompleted += new EventHandler<QueryServiceEventArgs>(queryService_ProcessCompleted);
}
private Dictionary<string, string> GetParameters(QueryByCenterParameters parameters)
{
Dictionary<string, string> dictionary = new Dictionary<string, string>();
string method = parameters.IsNearest ? "FindNearest" : "QueryByPoint";
dictionary.Add("map", parameters.MapName);
dictionary.Add("method", method);
dictionary.Add("point", JsonHelper.FromPoint2D(parameters.CenterPoint));
dictionary.Add("tolerance", parameters.Tolerance.ToString());
dictionary.Add("queryParam", QueryParam.ToJson(parameters.QueryParam));
dictionary.Add("trackingLayerIndex", "-1");
dictionary.Add("userID", string.Format("\"{0}\"", Guid.NewGuid()));
return dictionary;
}
/// <summary>${IS6_QueryByCenterService_method_ProcessAsync_D}</summary>
/// <overloads>${IS6_QueryByCenterService_method_ProcessAsync_overloads_D}</overloads>
/// <param name="paramters">${IS6_QueryByCenterService_method_ProcessAsync_param_parameters}</param>
public void ProcessAsync(QueryByCenterParameters paramters)
{
ProcessAsync(paramters, null);
}