我正在尝试创建一个DbGeometry类型的多边形。它在我的本地机器上工作很好,但是当我在Azure Web角色上托管我的网站时,返回语句出现了错误。
代码:
string polygon = “POLYGON ((-30.3637216 30.7124139,-30.3632216 30.7124139,-30.3632216 30.7129139,-30.3637216 30.7129139,-30.3637216 30.7124139))”;
return DbGeometry.FromText(polygon, 4326);例外:
Exception has been thrown by the target of an invocation.
at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)
at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
at System.Data.SqlClient.SqlSpatialServices.GeometryFromText(String geometryText)
at Library.Modules.FindMyWay.SpatialFunctions.GetDefaultBox(Decimal latitude, Decimal longitude)
at Library.Stop.ImportStops(String userName, IEnumerable`1 stops, Int32 companyId) Inner Exception: at Microsoft.SqlServer.Types.GLNativeMethods.IsValid(GeoMarshalData g, Boolean& result)
at Microsoft.SqlServer.Types.GLNativeMethods.IsValid(GeoData g)
at Microsoft.SqlServer.Types.SqlGeometry.IsValidExpensive()
at Microsoft.SqlServer.Types.SqlGeometry.GeometryFromText(OpenGisType type, SqlChars text, Int32 srid)
at Microsoft.SqlServer.Types.SqlGeometry.Parse(SqlString s)你知道为什么这个多边形无效吗?
发布于 2013-08-01 10:51:11
好的,通过将SqlGeometry转换为DbGeometry,我以一种迂回的方式修复了这个问题:
SqlGeometry geom = SqlGeometry.STPolyFromText(new SqlChars(new SqlString(polygon)), 4326);
return DbGeometry.FromBinary(geom.STAsBinary().Buffer);此代码产生异常:
Unable to load DLL 'SqlServerSpatial.dll': The specified module could not be found. (Exception from HRESULT: 0x8007007E)修复:
64位dll导致此异常:
An attempt was made to load a program with an incorrect format. (Exception from HRESULT: 0x8007000B)因此,我不得不将32位dll添加到项目中,以便与Azure一起工作。
结果:现在很好,但是我仍然不知道为什么DbGeometry不工作在Azure上,也不知道为什么64位dll也不工作在Azure上。
发布于 2015-05-26 12:45:31
我也有同样的问题。我的修正是将以下Dll放在文件夹C:/windows/System32 32中:
SqlServerSpatial.dll SqlServerSpatial110.dll
实体框架根据以下来源使用这些dll:https://alastaira.wordpress.com/2011/08/19/spatial-applications-in-windows-azure-redux-including-denali/
https://stackoverflow.com/questions/17977391
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