博客介绍从XML文件加载数据集时可能出现的异常，如属性引发的InvalidCastException，或ReadXml(fileName, XmlReadMode.InferSchema)时的ArgumentException。给出解决办法，即使用ReadXml(fileName, XmlReadMode.IgnoreSchema)，再更新属性值，可通过将XML文件加载到XmlDocument实现。
After loaded dataset from xml file, if InvalidCastException was thrown with properties, or ArgumentException was thrown while ReadXml(fileName, XmlReadMode.InferSchema):
A way: ReadXml(fileName, XmlReadMode.IgnoreSchema), then update the properties value(this can be done by load xml file to XmlDocument, then replace the dataset properties with the XmlDocument values.)
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