Treestyleview in a datagridview?

Treestyleview in a datagridview?

• zwang2

  I've had a play with your great examples but I confess to getting a bit lost.

  My tree structure is just like a directory structure where the nodes that have children have no other row information - finally you get to the 'file' data which has many cells filling the row.

  I'm struggling with accessing the cells from a selected row - if it's a node with children then I don't access cells as there aren't any. If it doesn't have children then its the actual data.

  I'm experimenting with the following that just tries to fill a couple of labels with cell data. But it doesn't work - it picks up different data according to whether or not rows above the selected line are expanded or not.

  //this doesn't quite work right - trying to work out how to access rows but not nodes!!!

  private void treeGridView1_CellClick(object sender, DataGridViewCellEventArgs e)

  {

  TreeGridNode node = treeGridView1.Nodes[e.RowIndex];

  if (!node.HasChildren)

  {

  DataGridViewRow row = treeGridView1.Rows[e.RowIndex];

  if (row.Cells[2] != null)

  {

  label1.Text = row.Cells[1].Value.ToString();

  label2.Text = row.Cells[3].Value.ToString();

  }

  }

  else

  {

  label1.Text = "Node selected";

  label2.Text = node.HasChildren.ToString();

  }

  }

  I know I'm missing something simple, any pointers you could offer would be much appreciated.

  Thanks

  Steve

  
  

• JM32714

  Looks like it will be perfect - I'll see how i can incorporate it.
  Many thanks
  Steve
  
  

• hoabinh

  Works perfectly.
  I now have a simple test app that:
  fills the treegridview
  changes the folder icons as nodes expand and collapse
  fills labels with data from the grid according to the row you select
  and has expand all, collapse all, expand selected and collapse selected buttons.
  Thanks to your help I think I'm finally getting the hang of it.
  
  Happy to post it somewhere if you think it might be useful.
  
  Thanks again
  Steve
  
  

• sbellware

  Check out my blog for a sample that combines a TreeView with a DataGridView -- I call it a TreeGridView: http://blogs.msdn.com/markrideout/archive/2006/01/08/510700.aspx < xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

   

  -mark

  DataGridView Program Manager

  Microsoft

  This post is provided "as-is"

   

   

  
  

• Bryce Eddings

  Yes - this is where better documentation (or more samples) on my part would be helpful -- a node index and a row index do not correlate, except for the root nodes, so there is a helper method that goes from row index to node: GetNodeForRow(). You can pass in an actual row or a row index.

  Let me know if this works for you.

  -mark

  DataGridView Program Manager

  Microsoft

  This post is provided "as-is"

  
  

• ghenap

  Thanks for the quick response - I'll give it a try at a more civilized hour (in the UK)

  Cheers

  Steve

  
  
• Treestyleview in a datagridview?