wpf DataTable 或 DataSet 的 XML 反序列化
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XML Deserialization of DataTable or DataSet
提问by Adam Szabo
I have the following XML:
我有以下 XML：
<NewDataSet>
<xs:schema id="NewDataSet" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
<xs:element name="NewDataSet" msdata:IsDataSet="true" msdata:MainDataTable="Data" msdata:UseCurrentLocale="true">
<xs:complexType>
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element name="Data">
<xs:complexType>
<xs:sequence>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:choice>
</xs:complexType>
</xs:element>
</xs:schema>
</NewDataSet>
I know this was created by serializing a DataTable with new XmlSerializer(typeof(DataTable)).Serialize(writer, (DataTable)myDataTable);.
我知道这是通过使用new XmlSerializer(typeof(DataTable)).Serialize(writer, (DataTable)myDataTable);.
The schema as well as the actual data can be different in them.
模式以及实际数据在其中可能不同。
I need to deserialize it, and tried the following:
我需要反序列化它，并尝试了以下操作：
reader.ReadStartElement("NewDataSet");
var dataSet = (DataTable)new XmlSerializer(typeof(DataTable)).Deserialize(reader);
reader.ReadEndElement();
and also:
并且：
reader.ReadStartElement("NewDataSet");
var dataSet = (DataSet)new XmlSerializer(typeof(DataSet)).Deserialize(reader);
reader.ReadEndElement();
All I got was
我得到的只是
System.InvalidOperationException was unhandled Message=There is an error in XML document (26, 14). Source=System.Xml
System.InvalidOperationException 未处理 Message=XML 文档中存在错误 (26, 14)。源=系统.Xml
InnerException:
内部异常：
"http://www.w3.org/2001/XMLSchema'> was not expected."
“http://www.w3.org/2001/XMLSchema'> 不是预期的。”
How can I deserialize that thing?
我怎样才能反序列化那个东西？
回答by Adam Szabo
Managed to solve it. Seems like when we directly read to an existing DataSetusing its ReadXml()method, it just works.
设法解决它。似乎当我们DataSet使用它的ReadXml()方法直接读取现有文件时，它就可以工作。
var dataSet = new DataSet();
dataSet.ReadXml(reader);
Now I can reach the table as dataSet.Tables[0]
现在我可以到达桌子 dataSet.Tables[0]
回答by Mataniko
I can't really provide you with sample code as I don't have context to the rest of your code.
我无法真正为您提供示例代码，因为我没有其他代码的上下文。
Look at the documentation to XmlSerializer.Deserialize at: http://msdn.microsoft.com/en-us/library/system.xml.serialization.xmlserializer.deserialize.aspxand notice the different ways to initalize it.
查看 XmlSerializer.Deserialize 的文档：http: //msdn.microsoft.com/en-us/library/system.xml.serialization.xmlserializer.deserialize.aspx并注意初始化它的不同方法。
Your reader should be at the beginning of the stream, which it is not after you called
您的读者应该在流的开头，而不是在您调用之后
reader.ReadStartElement("NewDataSet");
Simply don't begin reading the XML and just pass Deserialize your reader. Even easier you can just pass it the file/memory stream directly.
简单地不要开始阅读 XML 并通过反序列化你的阅读器。更简单的是，您可以直接将文件/内存流传递给它。
