用于向字典添加值的 C# IL 代码

我有一个动态方法，它采用DataRecord并将数据映射到某种类型的对象。

来源于DynamicMethod_ILGenerator

这些对象具有类型为 Dictionary<string,object> 的字典，用于保存 DataRecord 中无法绑定的任何属性。

但是，我似乎无法弄清楚如何将这些添加到字典中。

我知道我必须在字典上调用Emit(OpCodes.Callvirt, addMethod)，但无论我尝试什么，我都无法弄清楚如何让它工作。

public static Load CreateBuilder(IDataRecord dataRecord)
    {
        var dynamicBuilder = new DynamicBuilder<T>();
        var method = new DynamicMethod("DynamicCreate", typeof(T), new[] { typeof(IDataRecord) }, typeof(T), true);
        var generator = method.GetILGenerator();
        var result = generator.DeclareLocal(typeof(T));
        generator.Emit(OpCodes.Newobj, typeof(T).GetConstructor(Type.EmptyTypes));
        generator.Emit(OpCodes.Stloc, result);

        // Dictionary to store.
        var dictType = typeof (Dictionary<string, object>);
        var dict = typeof(T).GetProperty("CustomFields");
        var addMethod = dictType.GetMethod("Add");
        for (var i = 0; i < dataRecord.FieldCount; i++)
        {
            var propertyInfo = typeof(T).GetProperty(dataRecord.GetName(i));
            var endIfLabel = generator.DefineLabel();
            if (propertyInfo != null && propertyInfo.GetSetMethod() != null)
            {
                var attributes = propertyInfo.GetCustomAttributes(typeof(DbIgnore), true) as DbIgnore[];
                if (attributes != null && attributes.Length > 0) continue;
                bool isNullable = false;
                if (propertyInfo.PropertyType.Name.ToLower().Contains("nullable"))
                    isNullable = true;
                Type _type = dataRecord.GetFieldType(i);
                generator.Emit(OpCodes.Ldarg_0);
                generator.Emit(OpCodes.Ldc_I4, i);
                generator.Emit(OpCodes.Callvirt, IsDbNullMethod);
                generator.Emit(OpCodes.Brtrue, endIfLabel);
                generator.Emit(OpCodes.Ldloc, result);
                generator.Emit(OpCodes.Ldarg_0);
                generator.Emit(OpCodes.Ldc_I4, i);
                generator.Emit(OpCodes.Callvirt, GetValueMethod);
                if (isNullable)
                    generator.Emit(OpCodes.Unbox_Any, GetNullableType(_type));
                else
                    generator.Emit(OpCodes.Unbox_Any, _type);
                //generator.Emit(OpCodes.Unbox_Any, dataRecord.GetFieldType(i));
                generator.Emit(OpCodes.Callvirt, propertyInfo.GetSetMethod());
                generator.MarkLabel(endIfLabel);
            } else {
                  // How-To Add to Dictionary
            }
        }
        generator.Emit(OpCodes.Ldloc, result);
        generator.Emit(OpCodes.Ret);
        return (Load)method.CreateDelegate(typeof(Load));
    }