// Experiment with DataGridView
// sestoft@dina.kvl.dk * 2005-05-03

using System;
using System.Windows.Forms;

class MyTest {
  public static void Main(String[] args) {
    Form form = new Form();
    form.Text = "SuperCalc 2005";
    DataGridView dgv = new DataGridView();
    dgv.ShowEditingIcon = false;
    // Show current cell's reference in top lefthand corner:
    dgv.CellEnter +=
      delegate(Object sender, DataGridViewCellEventArgs arg) { 
        int row = arg.RowIndex, col = arg.ColumnIndex;
        dgv.TopLeftHeaderCell.Value = ColumnName(col) + (row+1);
      };
    dgv.ColumnCount = 70;
    dgv.RowCount = 40;
    dgv.AllowUserToAddRows = false;
    // Put labels on columns and rows:
    for (int col=0; col<dgv.ColumnCount; col++)
      dgv.Columns[col].Name = ColumnName(col);
    for (int row=0; row<dgv.RowCount; row++) 
      dgv.Rows[row].HeaderCell.Value = (row+1).ToString();
    // Set data grid size, add to form, and display:
    dgv.Size = new System.Drawing.Size(800,500);
    form.Controls.Add(dgv);
    form.ClientSize = dgv.Size;
    form.StartPosition = FormStartPosition.CenterScreen;
    form.ShowDialog();
  }

  // Convert column numbers 0 1 2 ... to A B ... Z AA AB ... AZ BA BB ...
  public static String ColumnName(int col) { 
    String name = "";
    while (col >= 26) {
      name = (char)('A' + col % 26) + name;
      col = col / 26 - 1;
    }
    return (char)('A' + col) + name;
  }
}