Cannot complicity convert type char to string

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C#

I created a player class and made a array from that class for my menu driven player system I am trying to use my GetChar method to keep displaying the prompt and reading whatever the user typed on the keyboard until Char.TryParse can convert the input to an char But I keep getting the error Cannot complicity convert type char to string when I call my GetChar method.

Any help would be appreciated

//Creates a player in the tables if the array is not already full and the name is not a duplicate
      static void ProcessCreate(Int32 number, String firstName, String lastName, Int32 goals,
          Int32 assists, Player[] players, ref Int32 playerCount, Int32 MAXPLAYERS)
      {
          //Int32 player = 0;
          if (playerCount < MAXPLAYERS)
          {
            number = IOConsole.GetInt32("\nCreate Player: please enter the player's number");
                         //Console.ReadLine();
              if (GetPlayerIndex(number, firstName, lastName, goals, assists, players, ref playerCount) == -1)
              {
                  firstName = IOConsole.GetChar("\nCreate Player: please enter the player's First Name");
                    //Console.ReadLine();
                    lastName = IOConsole.GetChar("\nCreate Player: please enter the player's Last  Name");
                   //Console.ReadLine();
                   goals = IOConsole.GetInt32("\nCreate Player: please enter the player's goals");
                 Int32.Parse(Console.ReadLine());
                 assists = IOConsole.GetInt32("\nCreate Player: please enter the player's assists");
                   //Console.ReadLine();
                  InsertPlayer(number, firstName, lastName, goals, assists, players, ref playerCount);
                  Console.WriteLine("\n{0,7}   {1,-20}{2, -20}{3,8}{4,8}{5,8}\n", "Number", "First Name", "Last Name", "Goals", " Assists", "Points");
                  for (Int32 player = 0; player < playerCount; player++)
                  Console.WriteLine("{0,7}   {1,-20}{2, -20}{3,8}{4,8}{5,8}",
                players[player].Number, players[player].FirstName, players[player].LastName,
                players[player].Goals, players[player].Assists, players[player].Points());


                  Console.WriteLine();
              }
              else
                  Console.WriteLine("\nCreate Player: the player number already exists");
          }
          else
              Console.WriteLine("\nCreate Player: the player roster is already full");

      }

Here is my get char method

public static char GetChar(String prompt)
        {

            // declare variables
            char validChar;
            while (!Char.TryParse(Console.ReadLine(), out validChar))
            {
                Console.WriteLine("Invalid entery - try again.");
                Console.Write(prompt);
            }
            return validChar;
        }