C#中如何捕获内存不足异常？

string StudentName = "Tom";
string StudentSubject = "Maths";

StringBuilder sBuilder = new StringBuilder(StudentName.Length, StudentName.Length);

sBuilder.Insert(value: StudentSubject, index: StudentName.Length - 1, count: 1);

System.OutOfMemoryException: Out of memory

using System;
using System.Text;

namespace Demo {
   class Program {
      static void Main(string[] args) {
         try {
            string StudentName = "Tom";
            string StudentSubject = "Maths";
            StringBuilder sBuilder = new StringBuilder(StudentName.Length, StudentName.Length);
            // Append initial value
            sBuilder.Append(StudentName);
            sBuilder.Insert(value: StudentSubject, index: StudentName.Length - 1, count: 1);
         } catch (System.OutOfMemoryException e) {
               Console.WriteLine("Error:");
               Console.WriteLine(e);
         }
      }
   }
}

Error:
System.OutOfMemoryException: Out of memory