C# Params Parameter Format Fix Guide

In C#, the params parameter allows a method to accept a variable number of parameters. To address the issue of params parameter format errors, you can follow these steps:

1. Ensure that the `params` parameter is the last argument of the method.
2. Ensure that the type of the params parameter is an array.
3. Ensure that the type of the variable number of arguments passed to the method matches the type of the params parameter.

Here is an example demonstrating the proper use of the params parameter:

public void PrintNumbers(params int[] numbers)
{
    foreach (int number in numbers)
    {
        Console.WriteLine(number);
    }
}

// 使用params参数调用方法
PrintNumbers(1, 2, 3, 4, 5);

In the example above, the PrintNumbers method uses the params parameter to accept a variable number of int type parameters. When calling the PrintNumbers method, you can pass any number of int parameters.