.NET grid and delete key

Cory Rainbeau

September 02, 2011 13:54

Hi,

Does the .NET grid support deleting rows using the delete key?

Thanks,
Cory

0

• 

  Dapfor Team

  September 02, 2011 14:01

  Hello,
  The following code demonstrates how to implement this functionality. After removing the selection, the grid selects a new row that is closest to the removal and ensures this row visible (i.e scrolls the content if necessary).

  grid.KeyDown += grid_KeyDown;
  ...
  
  void grid_KeyDown(object sender, KeyEventArgs e) 
  { 
   if (Equals(Keys.Delete, e.KeyCode)) 
   { 
   //Copy selected rows 
   List<Row> rows = new List<Row>(grid.Selection); 
   
   //Get an index of the first selected row 
   int firstSelectedRow = rows.Count > 0 ? rows[0].VisibleIndex : -1; 
   
   //Remove selection (from last to first for performance reasons) 
   for(int i = rows.Count - 1; i >= 0; --i) 
   { 
   rows[i].Remove(); 
   } 
   
   //Ensure the closest row selected, focused and visible 
   firstSelectedRow = firstSelectedRow < grid.Rows.Count ? firstSelectedRow : grid.Rows.Count - 1; 
   if(firstSelectedRow >= 0) 
   { 
   grid.Rows[firstSelectedRow].Focused = true; 
   grid.Rows[firstSelectedRow].Selected = true; 
   grid.Rows[firstSelectedRow].EnsureVisible(); 
   } 
   } 
  }

  Best regards,
  The Dapfor Team

  0

Please sign in to leave a comment.