无效 XML。 ---&gt 在包含 FetchXML 的插件上

Question

当合约名称中有 & 或其他无效字符时会发生这种情况。我的问题是，如何处理这些无效字符？？！！

Microsoft.Crm.CrmException: Invalid XML. ---> System.Xml.XmlException: An error occurred while parsing EntityName. Line 13, position 117. at System.Xml.XmlTextReaderImpl.Throw(Exception e) at System.Xml.XmlTextReaderImpl.HandleEntityReference(Boolean isInAttributeValue, EntityExpandType expandType, Int32& charRefEndPos) at System.Xml.XmlTextReaderImpl.ParseAttributeValueSlow(Int32 curPos, Char quoteChar, NodeData attr) at System.Xml.XmlTextReaderImpl.ParseAttributes() at System.Xml.XmlTextReaderImpl.ParseElement() at System.Xml.XmlTextReaderImpl.ParseElementContent() at System.Xml.Linq.XContainer.ReadContentFrom(XmlReader r) at System.Xml.Linq.XContainer.ReadContentFrom(XmlReader r, LoadOptions o) at System.Xml.Linq.XDocument.Load(XmlReader reader, LoadOptions options) at Microsoft.Crm.Platform.Server.Utility.XmlHelper.LoadXmlInfo(String xmlInfo) at Microsoft.Crm.Query.EntityExpression.ExtractPlatformName(String fetchXml, XElement element).

问题代码如下：

//run a fetchXml query to get how many contract lines have these values

string fetchLines = @"
  <fetch version='1.0' output-format='xml-platform' mapping='logical' distinct='false'>
    <entity name='new_yummycontractline'>
      <attribute name='new_yummycontractlineid' />
      <filter type='and'>
        <condition attribute='new_servingtime' operator='eq' value='" + servingTime.ToString() + @"' />
        <condition attribute='new_servinggroup' operator='eq' value='" + servingGroup.ToString() + @"' />
        <condition attribute='new_destination' operator='eq' value='" + location.ToString() + @"' />
        <condition attribute='statecode' operator='eq' value='0' />
      </filter>
      <link-entity name='new_yummycontract' from='new_yummycontractid' to='new_contractid' link-type='inner' alias='ad'>
        <filter type='and'>
          <condition attribute='new_yummycontractid' operator='eq' uiname='" + uiname + @"' uitype='new_yummycontract' value='" + contractId.ToString() + @"' />
        </filter>
      </link-entity>
    </entity>
  </fetch>";

EntityCollection results = service.RetrieveMultiple(new FetchExpression(fetchLines));

Answer 1

我用了webutility.htmlencode(uiname)，问题似乎已经消失了。我猜 uiname 有一些无效的 XML 字符，这个方法解决了这个问题！

Answer 2

uiname 和 uitype 不是您的 fetchXml 工作所必需的。这些用于演示而不用于查询。我认为这些是由高级查找编辑器添加的；因此 "UI"

您可以像这样重写 XML 的那个部分

<link-entity name='new_yummycontract' from='new_yummycontractid' to='new_contractid' link-type='inner' alias='ad'>
  <filter type='and'>
    <condition attribute='new_yummycontractid' operator='eq' value='" + contractId.ToString() + @"' />
  </filter>
</link-entity>

不确定您使用的是哪个版本的 .NET，但您也可以使用 $ 特殊字符来指示 interpolated string，我认为这可以提高可读性并减少字符串连接

string fetchLines = @$"
  <fetch version='1.0' output-format='xml-platform' mapping='logical' distinct='false'>
    <entity name='new_yummycontractline'>
      <attribute name='new_yummycontractlineid' />
      <filter type='and'>
        <condition attribute='new_servingtime' operator='eq' value='{servingTime}' />
        <condition attribute='new_servinggroup' operator='eq' value='{servingGroup}' />
        <condition attribute='new_destination' operator='eq' value='{location}' />
        <condition attribute='statecode' operator='eq' value='0' />
      </filter>
      <link-entity name='new_yummycontract' from='new_yummycontractid' to='new_contractid' link-type='inner' alias='ad'>
        <filter type='and'>
          <condition attribute='new_yummycontractid' operator='eq' value='{contractId}' />
        </filter>
      </link-entity>
    </entity>
  </fetch>";

无效 XML。 ---&gt 在包含 FetchXML 的插件上

Invalid XML. ---&gt On A Plugin Containing FetchXML

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