private void LoadDataRecordValue(ParameterInfo parameter, int index)
{
MethodInfo getMethod = MethodSelector.Execute(parameter.ParameterType);
var tryLoadNullValue = DefineLabel();
var end = DefineLabel();
EmitCheckForValidOrdinal(index, tryLoadNullValue);
EmitCheckForDbNull(index, tryLoadNullValue);
EmitGetValue(index, getMethod, parameter.ParameterType);
EmitGoto(end);
MarkLabel(tryLoadNullValue);
if (parameter.ParameterType.IsValueType)
{
if (parameter.ParameterType.IsNullable())
{
var local = ILGenerator.DeclareLocal(parameter.ParameterType);
ILGenerator.Emit(OpCodes.Ldloca_S, local);
ILGenerator.Emit(OpCodes.Initobj, parameter.ParameterType);
ILGenerator.Emit(OpCodes.Ldloc, local);
}
else
{
ILGenerator.ThrowException(typeof(InvalidOperationException));
}
}
else
{
ILGenerator.Emit(OpCodes.Ldnull);
}
MarkLabel(end);
}
private void LoadDataRecordValue(PropertyInfo propertyInfo, int index)
{
MethodInfo getMethod = MethodSelector.Execute(propertyInfo.PropertyType);
var endLabel = DefineLabel();
EmitCheckForValidOrdinal(index, endLabel);
EmitCheckForDbNull(index, endLabel);
LoadInstance();
EmitGetValue(index, getMethod, propertyInfo.PropertyType);
EmitCallPropertySetterMethod(propertyInfo);
MarkLabel(endLabel);
}