我正在尝试创建一个DbGeometry
类型的多边形。它在我的本地计算机上可以正常工作,但是将我的网站托管在Azure Web角色上时,在return语句上出现错误。
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)
您知道为什么这个多边形无效吗?
最佳答案
好吧,我通过将SqlGeometry转换为DbGeometry,以一种about回的方式解决了这个问题:
is there something like dbgeometry makevalid in .net 4.5
SqlGeometry geom = SqlGeometry.STPolyFromText(new SqlChars(new SqlString(polygon)), 4326);
return DbGeometry.FromBinary(geom.STAsBinary().Buffer);
这段代码产生了异常:
Unable to load DLL 'SqlServerSpatial.dll': The specified module could not be found. (Exception from HRESULT: 0x8007007E)
修理:
Unable to load DLL 'SqlServerSpatial.dll'
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,我必须将32位dll添加到项目中才能使用Azure。
结果:现在还好,但是我仍然不确定
DbGeometry
为什么不能在Azure上运行,也不确定为什么64bit dll也不能在Azure上运行。关于c# - 在Azure Web角色上托管时,SqlGeometry/DbGeometry是无效异常,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/17977391/