ReadXmlSchema Method (TextReader)
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DataTable::ReadXmlSchema Method (TextReader^)

 

Reads an XML schema into the DataTable using the specified TextReader.

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

public:
void ReadXmlSchema(
	TextReader^ reader
)

Parameters

reader
Type: System.IO::TextReader^

The TextReader used to read the schema information.

Use the ReadXmlSchema method to create the schema for a DataTable. The schema includes table, relation, and constraint definitions.

To write a schema to an XML document, use the WriteXmlSchema method.

The XML schema is interpreted according to the XSD standard.

Data corruption can occur if the msdata:DataType and the xs:type types do not match. No exception will be thrown.

The ReadXmlSchema method is generally invoked before invoking the ReadXml method which is used to fill the DataTable.

To create a nested relation using XML schema, use implicit nested elements. You can also reconfigure the nested relation to use explicit column names. Elements must be implicitly nested in order for the corresponding DataTables to participate in a nested relation.

The following console application creates a new DataTable, and writes the schema for that table to a MemoryStream. Then, the example creates a new DataTable and reads its schema from the saved XML schema, using a StreamReader (which inherits from TextReader) as its source.

No code example is currently available or this language may not be supported.

.NET Framework
Available since 2.0
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