C# 截取字符串 例子：截取ftp地址信息
时间：2011-03-29 来源：Vicky_Chen
string str1 = @"ftp://admin:[email protected]";
int i = str1.IndexOf("//");
int j = str1.LastIndexOf(":");
int k = str1.IndexOf("@");
label1.Text = str1.Substring(i+2, j-i-2);//admin
label2.Text = str1.Substring(j+1,k-j-1);//111
label3.Text = str1.Substring(k+1,str1.Length-k-1);//172.16.145.121
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