Name

DataRelationCollection

Synopsis

This collection contains all DataRelation objects for a DataSet. This collection is accessed through the DataSet.Relations property. You can look up a DataRelation object by index or by name.

public abstract class DataRelationCollection : InternalDataCollectionBase {

// Protected Constructors

   protected DataRelationCollection( );  

// Public Instance Properties

   public abstract DataRelation this[string 

                  name

                  ]{get; } 

   public abstract DataRelation this[int 

                  index

                  ]{get; } 

// Public Instance Methods

   public virtual DataRelation Add(DataColumn[ ] parentColumns, DataColumn[ ] childColumns);

   public virtual DataRelation Add(DataColumn parentColumn, DataColumn childColumn);

   public virtual DataRelation Add(string name, DataColumn[ ] parentColumns, DataColumn[ ] childColumns);

   public virtual DataRelation Add(string name, DataColumn[ ] parentColumns, 

      DataColumn[ ] childColumns, bool createConstraints);

   public virtual DataRelation Add(string name, DataColumn parentColumn, DataColumn childColumn);

   public virtual DataRelation Add(string name, DataColumn parentColumn, DataColumn childColumn, bool createConstraints);

   public void Add(DataRelation relation);  

   public virtual void AddRange(DataRelation[ ] relations);  

   public virtual bool CanRemove(DataRelation relation);  

   public virtual void Clear( );  

   public virtual bool Contains(string name);  

   public virtual int IndexOf(DataRelation relation);  

   public virtual int IndexOf(string relationName);  

   public void Remove(DataRelation relation);  

   public void Remove(string name);  

   public void RemoveAt(int index);  

// Protected Instance Methods

   protected virtual void AddCore(DataRelation relation);  

   protected abstract DataSet GetDataSet( );  

   protected virtual void OnCollectionChanged(System.ComponentModel.CollectionChangeEventArgs ccevent);

   protected internal virtual void OnCollectionChanging(

        System.ComponentModel.CollectionChangeEventArgs ccevent);  

   protected virtual void RemoveCore(DataRelation relation);  

// Events

   public event CollectionChangeEventHandler CollectionChanged;  

}

Hierarchy

System.Object → InternalDataCollectionBase(System.Collections.ICollection, System.Collections.IEnumerable) → DataRelationCollection

Returned By

DataSet.Relations, DataTable.{ChildRelations, ParentRelations}