DataColumn Constructor (String^, Type^, String^)

 

Initializes a new instance of the DataColumn class using the specified name, data type, and expression.

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

public:
DataColumn(
	String^ columnName,
	Type^ dataType,
	String^ expr
)

Parameters

columnName
Type: System::String^

A string that represents the name of the column to be created. If set to null or an empty string (""), a default name will be specified when added to the columns collection.

dataType
Type: System::Type^

A supported DataType.

expr
Type: System::String^

The expression used to create this column. For more information, see the Expression property.

Exception Condition
ArgumentNullException

No dataType was specified.

The following example creates a computed column.

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

.NET Framework
Available since 1.1
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