How to remove the last element added into the List

Question

I have a List in c  in which i am adding list fields Now while adding i have to check condition if the condition satisfies then i need to remove the last row added from the list  Here is my sample code        List lt  gt  rows   new List lt  gt         foreach  User user in users                try                       Row row   new Row                row cell   new string 11               row cell 1    user                 row cell 0    user                 row cell 2    user                           rows Add row                if  row cell 0  Equals  Something                                     here i have to write code to remove last row from the list                   row means all the last three fields                             So my question is how to remove last row from list in c   Please help me

User · Accepted Answer

The direct answer to this question is   if rows Any      prevent IndexOutOfRangeException for empty list       rows RemoveAt rows Count - 1       However    in the specific case of this question  it makes more sense not to add the row in the first place   Row row   new Row                 if   row cell 0  Equals  Something          rows Add row       TBH  I d go a step further by testing  Something  against user     and not even instantiating a Row unless the condition is satisfied  but seeing as user    won t compile  I ll leave that as an exercise for the reader

User · Answer

I think the most efficient way to do this is this is using RemoveAt   rows RemoveAt rows Count - 1

User · Answer

if you need to do it more often   you can even create your own method for pop the last element  something like this   public void pop List lt string gt  myList        myList RemoveAt myList Count - 1       or even instead of void you can return the value like   public string pop  List lt string gt  myList           first assign the  last value to a seperate string      string extractedString   myList myList Count - 1          then remove it from list     myList RemoveAt myList Count - 1          then return the value      return extractedString      just notice that the second method s return type is not void   it is string b c we want that function to return us a string

User · Answer

rows RemoveAt rows Count - 1

User · Answer

You can use List lt T gt  RemoveAt method   rows RemoveAt rows Count -1

User · Answer

I would rather use Last   from LINQ to do it  rows   rows Remove rows Last      or rows   rows Remove rows LastOrDefault

[c#] How to remove the last element added into the List?

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