/// <summary>
/// get minus element into list by model
/// </summary>
/// <typeparam name="T">model type</typeparam>
/// <param name="listA">model list 1</param>
/// <param name="listB">model list 2</param>
/// <returns>minus element list</returns>
public static List <T> GetMinus <T>(List <T> listA, List <T> listB) where T : class
{
if (listA == null || listA.Count <= 0)
{
return(null);
}
if (listB == null || listB.Count <= 0)
{
return(listA);
}
List <T> res = new List <T>();
listA.ForEach(a =>
{
bool flag = true;
foreach (T item in listB)
{
if (ModelTool.ACompareB(a, item))
{
flag = false;
break;
}
}
if (flag)
{
res.Add(a);
}
});
return(res.Count == 0 ? null : res);
}
/// <summary>
/// get same element into list by model
/// </summary>
/// <typeparam name="T">model type</typeparam>
/// <param name="listA">model list 1</param>
/// <param name="listB">model list 2</param>
/// <returns>same element list</returns>
public static List <T> GetJoin <T>(List <T> listA, List <T> listB) where T : class
{
if (listA == null || listA.Count <= 0)
{
return(null);
}
if (listB == null || listB.Count <= 0)
{
return(null);
}
List <T> res = new List <T>();
listB.ForEach(a =>
{
foreach (T item in listA)
{
if (ModelTool.ACompareB(a, item))
{
res.Add(a);
break;
}
}
});
return(res.Count == 0 ? null : res);
}