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Jun 7th, 2016
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  1. String^ constring=L"datasource=localhost;port=3306;username=root;password=Bbaco2013";
  2. MySqlConnection^ conDataBase= gcnew MySqlConnection(constring);
  3. MySqlCommand^ cmdDataBase=gcnew MySqlCommand("select * from biblioteca.login where = usuario'"+this->username_txt->Text+"' and contraseña='"+this->password_txt->Text+"';",conDataBase);
  4. MySqlDataReader^myReader;
  5. try{
  6. conDataBase->Open();
  7. conDataBase->Open();
  8. cmdDataBase->Parameters->AddWithValue("Raul", username_txt->Text);
  9. cmdDataBase->Parameters->AddWithValue("root", password_txt->Text);
  10. myReader=cmdDataBase->ExecuteReader();
  11. int count=0;
  12. while(myReader->Read()){
  13. count=count+1;
  14. }
  15. if(count==1){
  16. MessageBox::Show("Usuario y contraseña correctos");
  17. }
  18. else if(count>1){
  19. MessageBox::Show("Usuario y contraseña Duplicados");
  20. }
  21. else
  22. MessageBox::Show("Usuario y contraseña incorrectos");
  23. }catch(Exception^ex){
  24. MessageBox::Show(ex->Message);
  25. }
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