查看创建和引发异常挑战的解决方案

已完成

以下代码是上一单元挑战的一种可能解决方案：

string[][] userEnteredValues = new string[][]
{
            new string[] { "1", "2", "3"},
            new string[] { "1", "two", "3"},
            new string[] { "0", "1", "2"}
};

try
{
    Workflow1(userEnteredValues);
    Console.WriteLine("'Workflow1' completed successfully.");

}
catch (DivideByZeroException ex)
{
    Console.WriteLine("An error occurred during 'Workflow1'.");
    Console.WriteLine(ex.Message);
}

static void Workflow1(string[][] userEnteredValues)
{
    foreach (string[] userEntries in userEnteredValues)
    {
        try
        {
            Process1(userEntries);
            Console.WriteLine("'Process1' completed successfully.");
            Console.WriteLine();
        }
        catch (FormatException ex)
        {
            Console.WriteLine("'Process1' encountered an issue, process aborted.");
            Console.WriteLine(ex.Message);
            Console.WriteLine();
        }
    }
}

static void Process1(String[] userEntries)
{
    int valueEntered;

    foreach (string userValue in userEntries)
    {
        bool integerFormat = int.TryParse(userValue, out valueEntered);

        if (integerFormat == true)
        {
            if (valueEntered != 0)
            {
                checked
                {
                    int calculatedValue = 4 / valueEntered;
                }
            }
            else
            {
                throw new DivideByZeroException("Invalid data. User input values must be non-zero values.");
            }
        }
        else
        {
            throw new FormatException("Invalid data. User input values must be valid integers.");
        }
    }
}

运行此应用程序将生成所需的输出：

'Process1' completed successfully.

'Process1' encountered an issue, process aborted.
Invalid data. User input values must be valid integers.

An error occurred during 'Workflow1'.
Invalid data. User input values must be non-zero values.

此代码只是“一种可能的解决方案”，因为有许多方法可以创建和引发异常。 只要你根据挑战中的规则获得正确的结果，那么你就做得很棒！

如果成功了，恭喜你！ 继续进行下一个单元中的知识检查。

重要

如果在完成此项挑战时遇到问题，可能需要先回顾前面的几个单元，然后再继续。