用Split劈开一个字符串

private string splitstr(string str)

{

string str = "xxxxxx[12345]";

string[] a = str.Split('[');

//a[0] = "xxxxxx";

//a[1] = "12345]";

if(a.Length >1)

{

string[] b = a[1].Split(']');

return b[0];

}

else

{

string[] b = {""};

return b[0];

}

}