c# Datagridview column width - Index was out of range. error

Question

I am trying to change the column width of my second column in datagridview. I keep on getting - Index out of range error. If I click on datagridview, it shows that it has binded with my datatable and all the columns and data are showing. Tried everything and are stuck, please help

DataTable dt = new DataTable();
        da.Fill(dt);
        dt.Columns["ID"].SetOrdinal(0);
        dt.Columns["Name"].SetOrdinal(1);
        dt.Columns["SKU"].SetOrdinal(2);
        dt.Columns["Price"].SetOrdinal(3);
        dt.Columns["QTY"].SetOrdinal(4);
        dt.Columns["Status"].SetOrdinal(5);

        DataRow row = dt.NewRow();
        bindingSource1.DataSource = dt;

        dataGridView2.DataSource = dt;

        dataGridView2.Location = new Point(0, 0);

        dataGridView2.ClientSize = new Size(850, 500);
        this.Controls.Add(dataGridView2); // Display table


        dataGridView2.Columns[1].Width = 300;    // ERROR here

I have also tried

DataGridViewColumn firstcolumn = dataGridView2.Columns[1];
        firstcolumn.Width = 300;