In C#, you can use the int.Parse or int.TryParse method to convert a string to an integer. If your string starts with a “+”, both methods will still correctly parse the integer value. Here’s an example:

string value = "+25";
int number;

bool success = int.TryParse(value, out number);

if (success)
{
    Console.WriteLine(number);  // Outputs: 25
}
else
{
    Console.WriteLine("Invalid integer");
}

In this code, int.TryParse attempts to convert the string value to an integer. If the conversion is successful, it stores the result in number and returns true. If the conversion is not successful (for example, if the string does not represent a valid integer), it returns false. The if statement then checks whether the conversion was successful.