How to convert the object list into string list.

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I write a code for Classes i saved the data in the list of user defined type in which i want to delete the data from the user defined type list so if the list contains the data then it will remove it from the list so i use the function of list that is Contain but in contain function it only accept the string data
Plz tell me how should i convert the user defined list to the string list. Then i can check the following data is avaible or not then it will delete it from th

What I have tried:

public void remove_item(List<Male_zone>mens, Male_zone m)
       {
             List<string> asobj = new List<string>();

             asobj = mens.Cast<string>().ToList();

           if (asobj.Contains(m.m_item))
               {
                   asobj.Remove(m.m_item);
                   Console.WriteLine("Successfully delete");

               }
           else
           {
               Console.WriteLine("Not Found");
           }

       }

Main Function

Male_zone mens121 = new Male_zone();
Console.WriteLine("Please Enter the name of the item");

 mens121.m_item = Console.ReadLine();
mens121.remove_item(male_outlet, mens121);

Posted 11-Oct-19 19:40pm

mutasadiq iqbal

Updated 11-Oct-19 20:20pm

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OriginalGriff · Answer 1 · 2019-10-11T20:20:00

Your code is rather confused:
You don't actually remove anything from the list you pass in - because the Cast operation creates a copy of the original, not provides access to to the original under a different type.
Casting a list of objects doesn't use the contents of the objects and return the first string, it returns the object as a string - which means the object must implement an explicit casting operator.
Even if it did convert it to the "right string", it would be a list of strings, which wouldn't allow you to remove the item from the original collection!
Try this:

private bool RemoveItem(List<Male_zone> mens, Male_zone m)
    {
    Male_zone found = mens.FirstOrDefault(i => i.m_item == m.m_item);
    if (found != null)
        {
        mens.Remove(found);
        return true;
        }
    return false;
    }

And please, use standard naming conventions - no underscores, CamelCase, no "m_" prefix on members,... Whatever you are using is outdated: it's very old C++ format which predates C#, and that has been available since 2002 ...