Question

我想编写一个动态搜索函数来读取字符串并将其拆分取决于某些常量。

我的示例代码仅适用于搜索字符串，而不适用于它的不同变体。

        // String to clean
        searchString = "month == Jan || (name == “ni*” && age > 18)";

        const string ageStr = "age";
        const string monthStr = "month == ";
        const string nameStr = "name == ";
        const string startQutation = "“";
        const string endQutation = "”";
        const string star = "*";

        string month = searchString.Substring(searchString.IndexOf(monthStr) + 9, 3);
        searchString = searchString.Remove(searchString.IndexOf(monthStr), 12);

        string nameOrginal = searchString.Substring(searchString.IndexOf(startQutation) + 1, 
                                searchString.IndexOf(endQutation) - searchString.IndexOf("“") - 1);
        string name = nameOrginal;
        if (name.Contains("*"))
        {
            name = name.Remove(name.IndexOf(star), 1);
        }
        searchString = searchString.Remove(searchString.IndexOf(nameStr), 8 + nameOrginal.Length + 2);

        string ageCompare = searchString.Substring(searchString.IndexOf(ageStr) + 6, 2);
        ageCompare = ageCompare.Trim();
        string age = searchString.Substring(searchString.IndexOf(ageStr) + 8, 2);

        MessageBox.Show(string.Format("Name: {0}\nMonth: {1}\nAge:{2}\nAge compare operator:{3}",
                                             name, month, age, ageCompare));

结果是并且应该是： month =“jan” name =“ni” 年龄= 18岁 ageCompare =“＆gt;”

我需要一个更好的函数来清除常量之后的字符串，这样如果字符串与硬编码字符串不同则不会出错。

祝你好运

搜索方法与比较运算符

0 个答案: