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private string GetStr(string TxtStr, string FirstStr, string SecondStr)
{
if (FirstStr.IndexOf(SecondStr, 0) != -1)
return "";
int FirstSite = TxtStr.IndexOf(FirstStr, 0);
int SecondSite = TxtStr.IndexOf(SecondStr, FirstSite + 1);
if (FirstSite == -1 || SecondSite == -1)
return "";
return TxtStr.Substring(FirstSite + FirstStr.Length, SecondSite - FirstSite - FirstStr.Length);
}
private string GetStr(string TxtStr, string FirstStr, string SecondStr)
{
if (FirstStr.IndexOf(SecondStr, 0) != -1)
return "";
int FirstSite = TxtStr.IndexOf(FirstStr, 0);
int SecondSite = TxtStr.IndexOf(SecondStr, FirstSite + 1);
return TxtStr.Substring(FirstSite + FirstStr.Length, SecondSite - FirstSite - FirstStr.Length);
}
第一个字串不能包含第二个字串