Shops loading error

[Jaiz]

Thank you very much someone. But 1 question i have. The dbCon i cant make it change able?

/make a SQLConnection
string strConnection = @"server=127.0.0.1;database=testdb;uid=root;password=test";
dbCon.ConnectionString = strConnection;
try{
dbCon.Open();
}catch (Exception ex){
MessageBox.Show(ex.Message);
}

here server=textBox_host.Text thats work or? I want make it change able per textBox