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//------------------------------------------------------------------------------
// <copyright file="TypedTableBase.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
// <owner current="true" primary="true">[....]</owner>
// <owner current="true" primary="false">spather</owner>
//------------------------------------------------------------------------------
using System;
using System.Collections.Generic;
using System.Collections;
using System.Linq;
using System.Linq.Expressions;
using System.Runtime.Serialization;
namespace System.Data {
/// <summary>
/// This is the generic base class for TypedDataSet
/// </summary>
[Serializable]
public abstract class TypedTableBase<T> : DataTable, IEnumerable<T> where T : DataRow {
/// <summary>
/// Default constructor for generic TypedTableBase.
/// Will be called by generated Typed DataSet classes and is not for public use.
/// </summary>
protected TypedTableBase() : base() {}
/// <summary>
/// Constructor for the generic TypedTableBase with takes SerializationInfo and StreamingContext.
/// Will be called by generated Typed DataSet classes and
/// is not for public use.
/// </summary>
/// <param name="info">
/// SerializationInfo containing data to construct the object.
/// </param>
/// <param name="context">
/// The streaming context for the object being deserializad.
/// </param>
protected TypedTableBase(System.Runtime.Serialization.SerializationInfo info, System.Runtime.Serialization.StreamingContext context)
: base(info, context) {}
/// <summary>
/// This property returns a enumerator of T for the TypedTable. Note, this could
/// execute the underlying Linq expression.
/// </summary>
/// <returns>
/// IEnumerable of T.
/// </returns>
public IEnumerator<T> GetEnumerator() {
return this.Rows.Cast<T>().GetEnumerator();
}
IEnumerator IEnumerable.GetEnumerator() {
return GetEnumerator();
}
/// <summary>
/// Casts an EnumerableDataTable_TSource into EnumerableDataTable_TResult
/// </summary>
public EnumerableRowCollection<TResult> Cast<TResult>()
{
EnumerableRowCollection<T> erc = new EnumerableRowCollection<T>((DataTable)this);
return erc.Cast<TResult>();
}
}
}
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