如何从使用OpenFileDialog读取的行中获取特定数据？

Question

示例.txt：

127.0.0.1@user1;pass1
127.5.452.211@user2;pass2
27.33.5.31@user3;pass3
127.66.3.32@user4;pass4

我的程序需要从我的.txt文件中读取每一行，然后使用它提供的IP，用户名和密码。我只设法让它读取所有行，但我不知道如何从每行选择IP /用户/通行证以供以后使用。

private: System::Void button1_Click(System::Object^  sender, System::EventArgs^  e) {
             //bool found = true;

             //std::string IP;
             //std::string Username;
             //std::string Password;


             //Stream^ myStream;  
             OpenFileDialog^ openFileDialog1 = gcnew OpenFileDialog;  
             openFileDialog1->InitialDirectory = "c:\\";  
             openFileDialog1->Title = "Game Account Database";  
             openFileDialog1->Filter = "CP files (*.cp)|*.cp|All files (*.*)|*.*|txt files (*.txt)|*.txt";  
             openFileDialog1->FilterIndex = 2;  
             openFileDialog1->Multiselect = true;  

             if ( openFileDialog1->ShowDialog() == System::Windows::Forms::DialogResult::OK )  
             {  
                 array<String^>^ lines = System::IO::File::ReadAllLines(openFileDialog1->FileName);  
                 for each (String^ line in lines) {  

                     System::Diagnostics::Debug::WriteLine("",line);  

                 }  
             }  
         }
};