DataColumn::ColumnMapping Property

 

Gets or sets the MappingType of the column.

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

public:
property MappingType ColumnMapping {
	virtual MappingType get();
	virtual void set(MappingType value);
}

Property Value

Type: System.Data::MappingType

One of the MappingType values.

The ColumnMapping property determines how a DataColumn is mapped when a DataSet is saved as an XML document using the WriteXml method.

For example, if a DataColumn is named "customerID," and its ColumnMapping property is set to MappingType.Element, the column value will produce the following XML:

<Customers>
 <customerID>ALFKI</customerID>
......
 </Customers>
 <Orders>
 <OrderID>12345</OrderID>
 <customerID>ALFKI</customerID>
......
 </Orders>

However, if the same column is mapped to MappingType.Attribute, the following XML is produced:

<Customers customerID="ALFKI"........more attributes.....>
 <Order orderID="1234"....more attributes..../>
 <Order orderID="1234"....more attributes..../>
...... More orders for this customer
 </Customers>

Use the DataColumn constructor that contains the type argument to specificy how the DataColumn is mapped when its DataSet is transformed to an XML document.

The ColumnMapping property corresponds to the constructor argument type.

The following example sets the ColumnMapping type property of new DataColumn.

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

.NET Framework
Available since 1.1
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