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Normal Topic How to hide a row of TableNode? (Read 3993 times)
CanadaProgrammer
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How to hide a row of TableNode?
Apr 1st, 2012 at 11:33pm
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I try to hide a row of a TableNode. The Head property of row is true or false. To collapse and to expand a row is not what I need.



Thanks a lot.
  
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Stoyo
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Re: How to hide a row of TableNode?
Reply #1 - Apr 2nd, 2012 at 6:14am
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There's no Visible property for rows, but you could set their Height to 0 as a work-around. The Bounds assignment forces links to update their positions after the row height is changed:

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private void diagram_CellClicked(object sender, CellEventArgs e)
{
	// hide the clicked row
	e.Table.Rows[e.Row].Height = 0;
	e.Table.Bounds = e.Table.Bounds;
}


I hope that helps,
Stoyan
  
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CanadaProgrammer
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Re: How to hide a row of TableNode?
Reply #2 - Apr 2nd, 2012 at 2:43pm
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then how to show a row again? thanks.
  
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Stoyo
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Re: How to hide a row of TableNode?
Reply #3 - Apr 2nd, 2012 at 4:45pm
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If all rows are the same height, you could set table.Rows[n].Height = table.RowHeight. If rows can be of different heights, you will have to store the original row height somewhere, e.g. as a value of some cell's Tag.

I hope that helps,
Stoyan
  
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CanadaProgrammer
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Re: How to hide a row of TableNode?
Reply #4 - Apr 2nd, 2012 at 5:34pm
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why need "e.Table.Bounds = e.Table.Bounds;", looks it does nothing
  
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Stoyo
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Re: How to hide a row of TableNode?
Reply #5 - Apr 2nd, 2012 at 6:01pm
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It's a hack to redraw the table and update link positions, since the row.Height setter doesn't do that. If you are hiding rows before the table is drawn and has links connected to it, you don't need to reset Bounds.

I hope that helps,
Stoyan
  
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CanadaProgrammer
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Re: How to hide a row of TableNode?
Reply #6 - Apr 2nd, 2012 at 7:56pm
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In my case, all links connect to table, no row, so is it necessary to set Bounds property?
  
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Re: How to hide a row of TableNode?
Reply #7 - Apr 3rd, 2012 at 6:43am
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Yes, if there aren't links connected to rows, you can skip that. You might still have to call Invalidate to redraw the table though.
  
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