c# - 替换逗号分隔列表的单个字段中的字符

Question

我的c#代码中有字符串

a,b,c,d,"e,f",g,h

我想用“e f”替换“e,f”，即在引号内的 ',' 应该用空格替换。

我尝试使用 string.split，但它对我不起作用。

Answer 1

好吧，我懒得考虑正则表达式方法，所以我将提供一种老式的循环方法，它会起作用:

string DoReplace(string input)
{
    bool isInner = false;//flag to detect if we are in the inner string or not
    string result = "";//result to return

    foreach(char c in input)//loop each character in the input string
    {
        if(isInner && c == ',')//if we are in an inner string and it is a comma, append space
            result += " ";
        else//otherwise append the character
            result += c;

        if(c == '"')//if we have hit an inner quote, toggle the flag
            isInner = !isInner;
    }

    return result;
}

注意:此解决方案假设只能有一层内引号，例如您不能有 "a,b,c,"d,e,"f,g",h",i, j" - 因为这简直是疯了!