我有一个程序，在加载用户控件时，将图形添加到地图层（你不应该对地图有太多的了解，我相信问题出在我的循环逻辑上。）
这是我的代码：
private void UserControl_Loaded(object sender, RoutedEventArgs e)
{
con = new System.Data.SqlClient.SqlConnection();
con.ConnectionString = "Data Source=USSW7DEVWS16\\DEVELOPER;Initial Catalog=acrGIS;Integrated Security=True";
con.Open();
using (SqlCommand command = new SqlCommand("SELECT * FROM arcObjects", con))
{
SqlDataReader reader = command.ExecuteReader();
while (reader.Read())
{
int ID = reader.GetInt32(0);
Object = reader.GetString(1);
OComment = reader.GetString(2);
OStreet = reader.GetString(3);
OCity = reader.GetString(4);
OState = reader.GetString(5);
OZip = reader.GetString(6);
OSpec = reader.GetString(7);
arcObjects.Add(new arcObject() { Object_Num = Object, Comments = OComment, Street = OStreet, City = OCity, State = OState, Zip = OZip, Spec = OSpec });
}
con.Close();
foreach (arcObject objects in arcObjects)
{
Locator InitialLocatorTask = new Locator("http://tasks.arcgisonline.com/ArcGIS/rest/services/Locators/TA_Streets_US_10/GeocodeServer");
InitialLocatorTask.AddressToLocationsCompleted += InitialLocatorTask_AddressToLocatonCompleted;
InitialLocatorTask.Failed += InitialLocatorTask_Failed;
AddressToLocationsParameters addressParams = new AddressToLocationsParameters();
Dictionary<string, string> address = addressParams.Address;
address.Add("Street", objects.Street);
address.Add("City", objects.City);
address.Add("State", objects.State);
address.Add("Zip", objects.Zip);
InitialLocatorTask.AddressToLocationsAsync(addressParams);
}
}
}
private void InitialLocatorTask_AddressToLocatonCompleted(object sender, ESRI.ArcGIS.Client.Tasks.AddressToLocationsEventArgs args)
{
con = new System.Data.SqlClient.SqlConnection();
con.ConnectionString = "Data Source=USSW7DEVWS16\\DEVELOPER;Initial Catalog=acrGIS;Integrated Security=True";
con.Open();
using (SqlCommand command = new SqlCommand("SELECT * FROM arcObjects", con))
{
SqlDataReader reader = command.ExecuteReader();
while (reader.Read())
{
int ID = reader.GetInt32(0);
Object = reader.GetString(1);
OComment = reader.GetString(2);
OStreet = reader.GetString(3);
OCity = reader.GetString(4);
OState = reader.GetString(5);
OZip = reader.GetString(6);
OSpec = reader.GetString(7);
CandidateListBox.Items.Clear();
List<AddressCandidate> returnedCandidates = args.Results;
foreach (AddressCandidate candidate in returnedCandidates)
{
if (candidate.Score >= 80)
{
CandidateListBox.Items.Add(candidate.Address);
if (OSpec == "Meter")
{
Graphic graphic = new Graphic()
{
Symbol = AddressLayout.Resources["WaterMeterRenderer"] as ESRI.ArcGIS.Client.Symbols.Symbol,
Geometry = candidate.Location
};
string address2 = OCity + ", " + OState + " " + OZip;
graphic.Attributes.Add("MeterNum", Object);
graphic.Attributes.Add("Comment", OComment);
graphic.Attributes.Add("Address1", OStreet);
graphic.Attributes.Add("Address2", address2);
if (candidate.Location.SpatialReference == null)
{
candidate.Location.SpatialReference = new SpatialReference(4326);
}
// if (!candidate.Location.SpatialReference.Equals(MyMap.SpatialReference))
//{
// if (MyMap.SpatialReference.Equals(new SpatialReference(102100)) && candidate.Location.SpatialReference.Equals(new SpatialReference(4326)))
// graphic.Geometry = _mercator.FromGeographic(graphic.Geometry);
// else if (MyMap.SpatialReference.Equals(new SpatialReference(4326)) && candidate.Location.SpatialReference.Equals(new SpatialReference(102100)))
// graphic.Geometry = _mercator.ToGeographic(graphic.Geometry);
// else if (MyMap.SpatialReference != new SpatialReference(4326))
// {
GeometryService geometryService = new
GeometryService("http://sampleserver3.arcgisonline.com/ArcGIS/rest/services/Geometry/GeometryServer");
geometryService.ProjectCompleted += (s, a) =>
{
graphic.Geometry = a.Results[0].Geometry;
};
geometryService.Failed += (s, a) =>
{
MessageBox.Show("Projection error: " + a.Error.Message);
};
//geometryService.ProjectAsync(new List<Graphic> { graphic }, MyMap.SpatialReference);
// }
//}
FeatureLayer graphicsLayer = MyMap.Layers["WaterMeterLayer"] as FeatureLayer;
graphicsLayer.Graphics.Add(graphic);
//return;
}
if (OSpec == "Lot")
{
Graphic graphic = new Graphic()
{
Symbol = AddressLayout.Resources["LotRenderer"] as ESRI.ArcGIS.Client.Symbols.Symbol,
Geometry = candidate.Location
};
string address2 = OCity + ", " + OState + " " + OZip;
graphic.Attributes.Add("MeterNum", Object);
graphic.Attributes.Add("Comment", OComment);
graphic.Attributes.Add("Address1", OStreet);
graphic.Attributes.Add("Address2", address2);
if (candidate.Location.SpatialReference == null)
{
candidate.Location.SpatialReference = new SpatialReference(4326);
}
//if (!candidate.Location.SpatialReference.Equals(MyMap.SpatialReference))
// {
// if (MyMap.SpatialReference.Equals(new SpatialReference(102100)) && candidate.Location.SpatialReference.Equals(new SpatialReference(4326)))
// graphic.Geometry = _mercator.FromGeographic(graphic.Geometry);
// else if (MyMap.SpatialReference.Equals(new SpatialReference(4326)) && candidate.Location.SpatialReference.Equals(new SpatialReference(102100)))
// graphic.Geometry = _mercator.ToGeographic(graphic.Geometry);
// else if (MyMap.SpatialReference != new SpatialReference(4326))
// {
GeometryService geometryService = new GeometryService("http://sampleserver3.arcgisonline.com/ArcGIS/rest/services/Geometry/GeometryServer");
geometryService.ProjectCompleted += (s, a) =>
{
graphic.Geometry = a.Results[0].Geometry;
};
geometryService.Failed += (s, a) =>
{
MessageBox.Show("Projection error: " + a.Error.Message);
};
//geometryService.ProjectAsync(new List<Graphic> { graphic }, MyMap.SpatialReference);
// }
// }
FeatureLayer graphicsLayer = MyMap.Layers["LotLayer"] as FeatureLayer;
graphicsLayer.Graphics.Add(graphic);
// return;
}
}
}
}
}
con.Close();
}
public void InitialLocatorTask_Failed(object sender, TaskFailedEventArgs e)
{
MessageBox.Show("Locator service failed: " + e.Error);
}
我知道它发生了什么，UserControl_Loaded 中的 foreach 循环正在向字典中添加内容，然后 InitailTaskToAddress_Completed 中的 while 循环一遍又一遍地运行（准确地说是 9 次）。问题是，虽然所有图形都放置在正确的位置，但这些图形的属性都是相同的......
由于某种原因，它没有得到它们。如果你想让我澄清任何事情，请告诉我。此外，如果您想查看我的 XAML，我也可以向您展示。我正在使用 C# 和 WPF，以及 arcGIS。谢谢您的帮助。