这是我使用的一个简单的扩展方法:
public static string Between(this string src, string findfrom, string findto)
{
int start = src.IndexOf(findfrom);
int to = src.IndexOf(findto, start + findfrom.Length);
if (start < 0 || to < 0) return "";
string s = src.Substring(
start + findfrom.Length,
to - start - findfrom.Length);
return s;
}
有了这个你可以使用
string valueToFind = sourceString.Between("car=", "</value>")
你也可以试试这个:
public static string Between(this string src, string findfrom,
params string[] findto)
{
int start = src.IndexOf(findfrom);
if (start < 0) return "";
foreach (string sto in findto)
{
int to = src.IndexOf(sto, start + findfrom.Length);
if (to >= 0) return
src.Substring(
start + findfrom.Length,
to - start - findfrom.Length);
}
return "";
}
有了这个,您可以提供多个结束标记(它们的顺序很重要)
string valueToFind = sourceString.Between("car=", ";", "</value>")