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DataTable.WriteXml Method (String)


Writes the current contents of the DataTable as XML using the specified file.

Namespace:   System.Data
Assembly:  System.Data (in System.Data.dll)

public void WriteXml(
	string fileName


Type: System.String

The file to which to write the XML data.

The WriteXml method provides a way to write either data only, or both data and schema from a DataTable into an XML document, whereas the WriteXmlSchema method writes only the schema. To write both data and schema, use one of the overloads that includes the XmlWriteMode parameter, and set its value to WriteSchema.

Note that the same is true for the ReadXml and ReadXmlSchema methods, respectively. To read XML data, or both schema and data into the DataTable, use the ReadXml method. To read just the schema, use the ReadXmlSchema method.


An InvalidOperationException will be thrown if a column type in the DataRow being read from or written to implements IDynamicMetaObjectProvider and does not implement IXmlSerializable.

.NET Framework
Available since 2.0
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