数据未使用C＃和Visual Studio保存在数据库中

Question

I have a project that used to work fine last time I worked on it, but after I formatted the PC the program couldn't find the database, the solution I found was to use this :

SqlConnection cn = new SqlConnection(@"Data Source=(LocalDB)\MSSQLLocalDB;AttachDbFilename=|DataDirectory|PAPPloran.mdf;Integrated Security=True;Connect Timeout=30");

Instead having the full path for the database file location.

That was the change that might be causing my problem, data isn't being saved on database anymore, it is shown on a datagridview on program after I "save" but when I close and reopen the program isn't there anymore.

Example from my program of a save button:

private void fusionButton1_Click(object sender, EventArgs e)
{
    {
        if (textBox1.Text != "" & dateTimePicker1.Text != "" & textBox3.Text != "" & textBox4.Text != "" & textBox5.Text != "" & comboBox2.Text != "" & textBox7.Text != "" & textBox8.Text != "" & textBox9.Text != "")
        {
            cn.Open();
            cmd.CommandText = "INSERT INTO Pagamentos ( NomeFornecedor, NFatura, Data, Valor, IVA, Total, Situacao, MPagamento, Dataliquidacao, Obs) VALUES ( '" + comboBox1.Text + "', '" + textBox1.Text + "', '" + dateTimePicker1.Text + "', '" + textBox3.Text + "' , '" + textBox4.Text + "','" + textBox5.Text + "', '" + comboBox2.Text + "','" + textBox7.Text + "','" + textBox8.Text + "','" + textBox9.Text + "')";
            cmd.ExecuteNonQuery();
            cmd.Clone();
            MessageBox.Show("Pagamento Inserido");
            cn.Close();
        }
    }
}

Answer 1

查看bin / debug文件夹，您将在其中找到databasr文件的副本（其中包含数据）