Question

Every time my forms loads/open it will prompt “System.Data.DataRowView”, How can I possibly remove this?

Here is my code:

    {
        InitializeComponent();
        GetProcessorCardTypes();
    }

    private void GetProcessorCardTypes()
    {
        cn.Open();

        MySqlCommand cmd = new MySqlCommand("call GetProcessorMethod(1)", cn);
        MySqlDataAdapter adapter = new MySqlDataAdapter(cmd);
        DataTable dt = new DataTable();
        adapter.Fill(dt);

        cmbProcessorMethods.DataSource = dt;
        cmbProcessorMethods.ValueMember = "method_id";
        cmbProcessorMethods.DisplayMember = "method_name";
    }

    private void cmbProcessorMethods_SelectedIndexChanged(object sender, EventArgs e)
    {
        MessageBox.Show(cmbProcessorMethods.SelectedValue.ToString());
    }

Answer 1

If you want to completely remove message box, then remove cmbProcessorMethods_SelectedIndexChanged event handler. Or you can change it to display method_name of selected row:

private void cmbProcessorMethods_SelectedIndexChanged(object sender, EventArgs e)
{
     DataRowView row = (DataRowView)cmbProcessorMethods.SelectedItem;
     MessageBox.Show(row["method_name"].ToString());
}

---

As Derek pointed, just set DisplayMember and ValueMember properties before assigning data source and your original code will work:

cmbProcessorMethods.ValueMember = "method_id";
cmbProcessorMethods.DisplayMember = "method_name";
cmbProcessorMethods.DataSource = dt;