比较两个DataTable内容是否相等，先是比数量，数量相等就比内容

#region 比较两个DataTable内容是否相等，先是比数量，数量相等就比内容
///   <summary>
///   比较两个DataTable内容是否相等，先是比数量，数量相等就比内容
///   </summary>
///   <param   name= "dtA "> </param>
///   <param   name= "dtB "> </param>
public static bool CompareDataTable(DataTable dtA, DataTable dtB)
{
if (dtA.Rows.Count == dtB.Rows.Count)
{
if (CompareColumn(dtA.Columns, dtB.Columns))
{
//比内容
for (int i = 0; i < dtA.Rows.Count; i++)
{
for (int j = 0; j < dtA.Columns.Count; j++)
{
if (!dtA.Rows[i][j].Equals(dtB.Rows[i][j]))
{
return false;
}
}
}
return true;
}
else
{
return false;
}
}
else
{
return false;
}
}
///   <summary>
///   比较两个字段集合是否名称,数据类型一致
///   </summary>
///   <param   name= "dcA "> </param>
///   <param   name= "dcB "> </param>
///   <returns> </returns>
private static bool CompareColumn(System.Data.DataColumnCollection dcA, System.Data.DataColumnCollection dcB)
{
if (dcA.Count == dcB.Count)
{
foreach (DataColumn dc in dcA)
{
//找相同字段名称
if (dcB.IndexOf(dc.ColumnName) > -1)
{
//测试数据类型
if (dc.DataType != dcB[dcB.IndexOf(dc.ColumnName)].DataType)
{
return false;
}
}
else
{
return false;
}
}
return true;
}
else
{
return false;
}
}
#endregion