c# - 正则表达式问题 C#

Question

我在尝试使用以下正则表达式时遇到问题:

string profileConfig = File.ReadAllText(str);

string startIndex = "user_pref(\"network.proxy.autoconfig_url\", \"";
string endIndex = "\"";

var regex = startIndex + "(.*)" + endIndex;
// Here we call Regex.Match.
Match match = Regex.Match(profileConfig, 
                          regex,
                          RegexOptions.IgnoreCase);

// Here we check the Match instance.
if (match.Success)
{
    // Finally, we get the Group value and display it.
    string key = match.Groups[1].Value;
    MessageBox.Show(key);
}

我得到错误:

Additional information: parsing "user_pref("network.proxy.autoconfig_url", "(.*)"" - Not enough )'s.

我的正则表达式是否存在某种形式的错误？

Answer 1

如果您打算匹配字符 ( 字面意思是:

，请转义第一个括号

string startIndex = "user_pref\\(\"network.proxy.autoconfig_url\", \"";