IntegerMan

public void WithdrawMoney(decimal amount)
{
   if (amount <= 0)
   {
      throw new ArgumentOutOfRangeException(nameof(amount), amount, "The amount to withdraw must be positive");
   }
   // Actual withdraw code
}

IntegerMan

public void WithdrawMoney(decimal amount)
{
   if (amount <= 0)
   {
      throw new InvalidOperationException();
   }
   // Actual withdraw code
}

IntegerMan

try
{
   // Do something that might cause an exception
}
catch (IOException ex)
{
   // Rethrow the exception without replacing its call stack
   throw;
}

IntegerMan

try
{
   // Do something that might cause an exception
}
catch (IOException ex)
{
   // We decide we don't really want to handle this exception
   // Let's re-throw it so calling methods can catch it
   throw ex;
}

IntegerMan

if (quantity <= 0)
{
   throw new Exception("Quantity must be a positive number");
}

IntegerMan

try
{
   // Some code
}
catch
{
}

IntegerMan

try
{
   // Some code
}
catch (Exception ex)
{
}

IntegerMan

int sum = 0;
try
{
   for (int i = 0; i <= myArray.Length; i++)
   {
      sum += myArray[i];
   }
}
catch (IndexOutOfRangeException ex)
{

IntegerMan

public int FindLargestNumber(List<int> numbers)
{
   int largest = int.MinValue;
   if (numbers != null)
   {
      foreach (int num in numbers)
      {
         if (largest < num)
         {
            largest = num;

IntegerMan

try
{
   string text = File.ReadAllText("MyFile.txt");
   // Do something with text
}
catch (IOException ex)
{
   // Display an error message
}