DataRelationPropertyDescriptor.cs :  » 2.6.4-mono-.net-core » System.Data » System » Data » C# / CSharp Open Source

using System;
using System.ComponentModel;

namespace System.Data{
  internal class DataRelationPropertyDescriptor : PropertyDescriptor
  {
    #region Fields

    DataRelation _relation;

    #endregion // Fields

    #region Constructors

    internal DataRelationPropertyDescriptor(DataRelation relation) : base(relation.RelationName,null)
    {
      _relation = relation;
    }

    #endregion // Constructors

    #region Properties

    public override Type ComponentType 
    { 
      get {
        return typeof(DataRowView);
      }
    }

    public override bool IsReadOnly 
    { 
      get {
        return false;
      }
    }

    public override Type PropertyType 
    { 
      get {
        return typeof(IBindingList);
      }
    }

    public DataRelation Relation 
    { 
      get {
        return _relation;
      }
    }

    #endregion // Properties

    #region Methods

    public override bool CanResetValue(object obj)
    {
      return false;
    }

    public override bool Equals(object obj)
    {
      DataRelationPropertyDescriptor descriptor = obj as DataRelationPropertyDescriptor;

      if (descriptor == null) {
        return false;
      }

      return (Relation == descriptor.Relation);
    }

    public override int GetHashCode()
    {
      return _relation.GetHashCode();
    }

        public override object GetValue(object obj)
    {
      DataRowView dr = (DataRowView)obj;
      return dr.CreateChildView(Relation);
    }

    public override void ResetValue(object obj)
    {
    }

    public override void SetValue(object obj, object val)
    {
    }

    public override bool ShouldSerializeValue(object obj)
    {
      return false;
    }

    #endregion // Methods
  }
}