reading data from text file and returning string

Ah, that will be because you've got a header line in your CSV file which you need to bypass.

You could do it by inserting this line before you attempt to parse the first field to an int:

if (fields[0] == "MobileId") continue;

The difference here is that the separator used in the CSV file is now a semi-colon rather than a tab.

So if you now use the following it should work:

string[] fields = line2.Split(';');

Thanks for your help, I really appreciate it.

I have a csv file that i need to read. It is the same Idea as the text file of before. But
It consists of 5 columns so I am not sure if split function will be a good idea to get the element that I am searching for. I wrote the following code to get the MenuName for a specific ID.

My problem is that it always read the element as a null and it does not return what is inside.

First take alook of a part of the csv file the the code after that

This is the CSV file
MobileId;MenuTreeView;MenuName;MenuInfo;MenuAction
747;SL_Menubaum;Desktop;0;Wait
747;SL_Menubaum;Wait;0;Wait

The code;
 static void Menu_Tree(int MobileID) {
            StreamReader reader = File.OpenText(@"C:\Robotron\Execution\MenuTree.csv");

            string line2;
            string MenuName = null;
            string MenuInfo = null;

            while ((line2 = reader.ReadLine()) != null)
            {
                string[] fields = line2.Split('\t');
                if (fields.Length != 5) continue;
                int id = Convert.ToInt32(fields[0]);
                if (id == MobileID)
                {
                    MenuName = fields[2];
                    MenuInfo = fields[3];
                    break;
                }
            }

            reader.Close();
            if (MenuName != null)
                Console.WriteLine("The Corresponding Endknot is " + MenuName + "The Corresponding MenuInfo"+ MenuInfo);
            else
                Console.WriteLine("There is no corresponding MenuName Information");
            Console.ReadKey();
       
       
        }

Do you have an idea how can i get the correct MenuName when i enter the ID. Thank you so much

Try this: