DataRelation Constructor (String^, DataColumn^, DataColumn^)
.NET Framework (current version)
Initializes a new instance of the DataRelation class using the specified DataRelation name, and parent and child DataColumn objects.
Assembly: System.Data (in System.Data.dll)
public:
DataRelation(
String^ relationName,
DataColumn^ parentColumn,
DataColumn^ childColumn
)
Parameters
- relationName
-
Type:
System::String^
The name of the DataRelation. If null or an empty string (""), a default name will be given when the created object is added to the DataRelationCollection.
- parentColumn
-
Type:
System.Data::DataColumn^
The parent DataColumn in the relationship.
- childColumn
-
Type:
System.Data::DataColumn^
The child DataColumn in the relationship.
| Exception | Condition |
|---|---|
| ArgumentNullException | One or both of the DataColumn objects contains null. |
| InvalidConstraintException |
The following example creates a new DataRelation and adds it to the DataRelationCollection of a DataSet.
.NET Framework
Available since 1.1
Available since 1.1
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