c# - 返回基于 int 的字符串

Question

在 C# .NET2 中，是否有更简单的方法来返回基于 int 值的字符串？

        if (intRelatedItems == 4)
        {
            _relatedCategoryWidth = "3";
        }
        else if (intRelatedItems == 3)
        {
            _relatedCategoryWidth = "4";
        }
        else if (intRelatedItems == 2)
        {
            _relatedCategoryWidth = "6";
        }
        else if (intRelatedItems == 1)
        {
            _relatedCategoryWidth = "12";
        }
        else
        {
            _relatedCategoryWidth = "0";
        }

Answer 1

Dictionary<int, string> dictionary = new Dictionary<int, string>
{
    {4, "3"},
    {3, "4"},
    {2, "6"},
    {1, "12"},
};

string defaultValue = "0";

if(dictionary.ContainsKey(intRelatedItems))
    _relatedCategoryWidth = dictionary[intRelatedItems];
else
    _relatedCategoryWidth = defaultValue;

或使用三元运算符，但我发现它的可读性较差:

_relatedCategoryWidth = dictionary.ContainsKey(intRelatedItems) ? dictionary[intRelatedItems] : defaultValue;

或者使用 TryGetValue 方法，正如 CodesInChaos 友善建议的那样:

if(!dictionary.TryGetValue(intRelatedItems, out _relatedCategoryWidth))
    _relatedCategoryWidth = defaultValue;