c# - 尝试在 C# 中更新货币字段时出错

Question

我正在尝试从我的 C# 代码更新发票字段“freightamount”。我能够像字符串和 Guid 一样更新其他字段，但是对于 Money，我在创建或更新发票实体时收到此错误：

There was an error while trying to serialize parameter      
 http://schemas.microsoft.com/xrm/2011/Contracts/Services:entity. The InnerException 
 message was 'Type 'Microsoft.Xrm.Sdk.Money' with data contract name 
'Money:http://schemas.microsoft.com/xrm/2011/Contracts' is not expected. Consider using a 
DataContractResolver or add any types not known statically to the list of known types - 
for example, by using the KnownTypeAttribute attribute or by adding them to the list of 
 known types passed to DataContractSerializer.'.  Please see InnerException for more 
 details.

这是我的代码的一部分：

我使用对“ Microsoft.Xrm.Sdk”的引用

然后在代码中：

 invoice.Attributes.Add(new KeyValuePair<string, object>("freightamount",  new Microsoft.Xrm.Sdk.Money (row.amount)));

哪里row.amount是十进制值。

Answer 1

您是否尝试过将 Money 添加为 Entity 类的 KnownTypeAttribute，方法是将其添加到 web.config 中？

<system.runtime.serialization>
    <dataContractSerializer>
        <declaredTypes>
            <add type="Microsoft.Xrm.Sdk.Entity, Microsoft.Xrm.Sdk, Version=5.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35">
                <knownType type = "Microsoft.Xrm.Sdk.Money, Microsoft.Xrm.Sdk, Version=5.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>                 
             </add>
        </declaredTypes>
    </dataContractSerializer>
</system.runtime.serialization>