.net - 将 Microsoft.SqlServer.Types 与 Dapper 一起使用时的 RuntimeBinderInternalCompilerException

Question

使用目标平台设置为以下之一的 Sql Server Data Tools 项目:

SQL Server 2008

SQL Server 2012

SQL Server 2014

并部署到 (localdb)\Projects 或 (localdb)\ProjectsV12

调用返回 Geometry、Geography 或 HierachyId 类型的存储过程，例如:

CREATE PROCEDURE [dbo].[SelectSqlGeometry]
    @x Geometry
AS
    SELECT @x as y
RETURN 0

以下调用代码:

var result = Connection.Query("dbo.SelectSqlGeometry", new { x = geometry }, commandType: CommandType.StoredProcedure).First();
bool isSame = ((bool)geometry.STEquals(result.y));

在 STEquals 行上导致以下异常。

Microsoft.CSharp.RuntimeBinder.RuntimeBinderInternalCompilerException was unhandled by user code HResult=-2146233088 Message=An unexpected exception occurred while binding a dynamic operation
Source=Microsoft.CSharp StackTrace: at Microsoft.CSharp.RuntimeBinder.RuntimeBinder.Bind(DynamicMetaObjectBinder payload, IEnumerable1 parameters, DynamicMetaObject[] args,
DynamicMetaObject& deferredBinding)
at Microsoft.CSharp.RuntimeBinder.BinderHelper.Bind(DynamicMetaObjectBinder
action, RuntimeBinder binder, IEnumerable1 args, IEnumerable1
arginfos, DynamicMetaObject onBindingError)
at Microsoft.CSharp.RuntimeBinder.CSharpConvertBinder.FallbackConvert(DynamicMetaObject
target, DynamicMetaObject errorSuggestion)
at System.Dynamic.DynamicMetaObject.BindConvert(ConvertBinder binder)
at System.Dynamic.ConvertBinder.Bind(DynamicMetaObject target, DynamicMetaObject[] args)
at System.Dynamic.DynamicMetaObjectBinder.Bind(Object[] args, ReadOnlyCollection1 parameters, LabelTarget returnLabel) at System.Runtime.CompilerServices.CallSiteBinder.BindCore[T](CallSite`1 site, Object[] args) at System.Dynamic.UpdateDelegates.UpdateAndExecute1[T0,TRet](CallSite site, T0 arg0) at DATailor.Examples.Dapper.SqlClient.Test.AllTypesDAOTest.TestAllTypesDynamic()

Answer 1

虽然根本原因不是 Dapper，但有一个潜在的异常正在被吞噬。

使用 ADO.Net 代码，如:

var geometry = Util.CreateSqlGeometry();
SqlDataReader reader=null;
SqlCommand cmd=null;
try
{
    cmd = new SqlCommand("dbo.SelectSqlGeometry", (SqlConnection)Connection);
    cmd.CommandType = CommandType.StoredProcedure;
    cmd.Parameters.Add(new SqlParameter("@x", geometry) { UdtTypeName = "Geometry" });
    cmd.ExecuteNonQuery();
    reader = cmd.ExecuteReader();
    while (reader.Read())
    {
        var y = (SqlGeometry)reader.GetValue(0);
        var same = geometry.STEquals(y);
    }
    reader.Dispose();
    reader = null;
}
finally
{
    if (reader != null)
    {
        if (!reader.IsClosed) try { cmd.Cancel(); }
            catch {}
        reader.Dispose();
    }
    if (cmd != null) cmd.Dispose();
    Connection.Close();
}

在 reader.GetValue 处抛出以下异常

System.InvalidCastException was unhandled HResult=-2147467262
Message=[A]Microsoft.SqlServer.Types.SqlGeometry cannot be cast to [B]Microsoft.SqlServer.Types.SqlGeometry. Type A originates from 'Microsoft.SqlServer.Types, Version=10.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91' in the context 'Default' at location 'C:\Windows\assembly\GAC_MSIL\Microsoft.SqlServer.Types\10.0.0.0__89845dcd8080cc91\Microsoft.SqlServer.Types.dll'. Type B originates from 'Microsoft.SqlServer.Types, Version=11.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91' in the context 'Default' at location 'C:\Windows\assembly\GAC_MSIL\Microsoft.SqlServer.Types\11.0.0.0__89845dcd8080cc91\Microsoft.SqlServer.Types.dll'. Source=DynamicGeometryIssue StackTrace: at DynamicGeometryIssue.TestDao.TestGeometry() in c:\Users\rich\Documents\Visual Studio 2013\Projects\DynamicGeometryIssue\DynamicGeometryIssue\TestDao.cs:line 27 at DynamicGeometryIssue.Program.Main(String[] args) in c:\Users\rich\Documents\Visual Studio 2013\Projects\DynamicGeometryIssue\DynamicGeometryIssue\Program.cs:line 15 at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args) at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args) at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly() at System.Threading.ThreadHelper.ThreadStart_Context(Object state) at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ThreadHelper.ThreadStart() InnerException:

基础异常的原因是 SQL Server 2012 中已知的重大更改。请参阅 SQL CLR 数据类型 以下 MSDN 文档的部分

http://msdn.microsoft.com/en-us/library/ms143179(v=sql.110).aspx

对我有用的解决方案是在 app.config 或 web.config 中创建以下 bindingRedirect。

<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
  <dependentAssembly>
    <assemblyIdentity name="Microsoft.SqlServer.Types"
                      publicKeyToken="89845dcd8080cc91"
                      culture="neutral" />
    <bindingRedirect oldVersion="10.0.0.0"
                     newVersion="11.0.0.0"/>
  </dependentAssembly>
</assemblyBinding>
</runtime>

或者，在 .NET 4.5 中，您可以更改连接字符串以包含“类型系统版本”属性的“SQL Server 2012”值，以强制 SqlClient 加载程序集的 11.0 版。

另一种解决方法是如下代码:

var geo = SqlGeography.Deserialize(rdr.GetSqlBytes(0));

但是，我认为这不是 Dapper 的一个选项。