Hide/Unhide columns in datagridview - C#

Hi,
Check the Attached Sample Source Program hope that will help you.

In your windows form place a button and one  Datagridview.

In Form Load

  private void Form1_Load(object sender, EventArgs e)
        {
            button1.Text = "+";
         DataTable   DTable = new DataTable();      
        //ServersTable - DataGridView
        for (int i = 1; i <= 6; ++i)
        {
            DTable.Columns.Add(new DataColumn("Col"+i));
        }

        for (int i = 0; i < 7; ++i)
        {
            DataRow r = DTable.NewRow();
            r.BeginEdit();
            foreach (DataColumn c in DTable.Columns)
            {
                r[c.ColumnName] = "Rows "+i;//writing values
            }
            r.EndEdit();
            DTable.Rows.Add(r);
        }
        dataGridView1.DataSource = DTable;

        showHideColumns(false);
        }

IN Button Click

 private void button1_Click(object sender, EventArgs e)
        {
            if (button1.Text == "+")
            {
                button1.Text = "-";
                showHideColumns(true);
            }
            else
            {
                button1.Text = "+";
                showHideColumns(false);
            }
        }

Show and Hide Datagridview Column

  private void showHideColumns(Boolean colHideStatus)
        {
            dataGridView1.Columns[0].Visible = colHideStatus;
            dataGridView1.Columns[1].Visible = colHideStatus;
            dataGridView1.Columns[2].Visible = colHideStatus;
        }