<CategoryAttribute("Data")>
<DescriptionAttribute("Occurs when edit mode begins.")>
Public Event CellBeginEdit As CellBeginEditEventHandler

[CategoryAttribute("Data")]
[DescriptionAttribute("Occurs when edit mode begins.")]
public event CellBeginEditEventHandler CellBeginEdit

/*
  * Sets the initial entry text to "Jim" when entry mode is initiated for cell B1.
  * 
  * Cancels entry mode for any cell other than B1.
  */
 private void workbookView_CellBeginEdit(object sender, 
     SpreadsheetGear.Windows.Forms.CellBeginEditEventArgs e)
 {
     // Acquire a workbook set lock.
     workbookView.GetLock();
     try
     {
         // Get a reference to the active worksheet's cells.
         SpreadsheetGear.IRange cells = workbookView.ActiveWorksheet.Cells;
 
         // Check if the correct cell is selected.
         if (workbookView.RangeSelection.Equals(cells["B1"]))
             // Change the entry text to "Jim".
             e.Entry = "Jim";
         else
             // Cancel CellBeginEdit.
             e.Cancel = true;
     }
     finally
     {
         // Release the workbook set lock.
         workbookView.ReleaseLock();
     }
 }