How Do I Manipulate A List?

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Visual-Studio

WPF

C#3.5

Hi,

I have this set of this list.I have managed to add it inside the list and display it into a grid.

Now I would like to select the top 30 words inside the list. I am encountering some problems in doing so.

I would like to check the text that are typed into the textbox with the list and if the text already exist in the list, I would like to return the 30 words which includes the text.

Help needed.

Thanks in advance.

string check = textbox.Text;

       <pre lang="xml">List<string> duplicate = new List<string>();

             if (duplicate.Contains(check) == true)
             {
                 int remove = Math.Max(0, duplicate.Count - 28);
                 duplicate.RemoveRange(0, remove);

                 duplicate.Insert(5, check);

                 //duplicate.AddRange(final);
             }</pre>