Connection property has not been initialized
Hello, I need help, I tried to fix the problem but i am stuck
14 Replies
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Please post code 🙂
ok
I am doint desktop application, jus so you know
@Citizen of Pluto
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private void textBoxPretraziMarke_TextChanged(object sender, EventArgs e)
{
PrimeniPretragu();
}
private void NadjiModelMarke()
{
int tekuciRed = dataGridViewMarke.CurrentRow.Index;
int MarkaID = (int)dataGridViewMarke.Rows[tekuciRed].Cells[0].Value;
podaciModela.DataSource = ModelDAO.UcitajModel(MarkaID);
dataGridViewModel.DataSource = podaciModela;
}
private void dataGridViewMarke_SelectionChanged(object sender, EventArgs e)
{
NadjiModelMarke();
}
}
}
Are you initializing the connection property?
as the error says
yes
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Microsoft.Data.SqlClient;
using System.Configuration;
namespace AutiKlijent
{
internal class Konekcija
{
public static readonly string konekcioniString = ConfigurationManager.ConnectionStrings["AutiDB"].ConnectionString;
public static void TestKonekcije()
{
using SqlConnection konekcija = new(konekcioniString);
konekcija.Open();
}
}
}
Using implies that it is freed (disposed) when it goes out of scope. So no, you are not.
Also you are not storing the connection variable anywhere
Your method seems to just test the connection, not actually connect and be used.
Unknown User•11mo ago
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