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string str = "王小名--300-36";
string[] ss = str.Split(new char[] { '-'},StringSplitOptions.RemoveEmptyEntries);
foreach (string s in ss)
{
Response.Write(s+"<br/>");
}
String str = "王小名--300-36";
String str1 = str.Substring((str.LastIndexOf("--")+1));
String str2 = str.Remove(str.LastIndexOf("--"));