using System.Collections.Generic;
using System.Data;

namespace Core.StlMes.Client.Qcm
{
    /// <summary>
    /// 用于比较DataRow是否相同
    /// </summary>
    public class DataRowComparer : IEqualityComparer<DataRow>
    {
        #region IEqualityComparer<DataRow> 成员

        bool IEqualityComparer<DataRow>.Equals(DataRow x, DataRow y)
        {
            string value = "";
            foreach (DataColumn dc in x.Table.Columns)
            {
                value += x[dc.ColumnName].ToString();
            }

            string value2 = "";
            foreach (DataColumn dc in y.Table.Columns)
            {
                value2 += y[dc.ColumnName].ToString();
            }
            return value == value2;
        }

        int IEqualityComparer<DataRow>.GetHashCode(DataRow obj)
        {
            string value = "";
            foreach (DataColumn dc in obj.Table.Columns)
            {
                value += obj[dc.ColumnName].ToString();
            }
            return value.GetHashCode();
        }

        #endregion
    }
}