DataGridColumnStyle paint override fails on last cell in row

[Mark.Larsen]

I made a class that extends DataGridColumnStyle. In the
Paint override I draw a border around each cell in the
column.

All cells look fine except for the last one (final row).
The lines I draw in the far right and bottom of the cell
don't show. I can draw 1 pixel up from the bottom and 1
pixel left of the right border. What is preventing me
from painting the border around this last cell?

[Dmitriy Lapshin [C# / .NET MVP]]

Hello Mark,

I'm afraid custom-drawn cells are not supposed to draw borders around
themselves. The grid has a feature called "GridLines" which will draw a
border around every cell in the grid.

Then, there's a "gotcha" with coordinates passed to DrawRect (or however it
is called in .NET) routines, related to just right-bottom corner. I'd
suggest reviewing MSDN docs to ensure how EXACTLY the passed coordinates are
interpreted by this routine.

--
Dmitriy Lapshin [C# / .NET MVP]
X-Unity Test Studio
http://x-unity.miik.com.ua/teststudio.aspx
Bring the power of unit testing to VS .NET IDE

"Ma*********@hill.af.mil" <an*******@discussions.microsoft.com> wrote in
message news:02****************************@phx.gbl...

I made a class that extends DataGridColumnStyle. In the
Paint override I draw a border around each cell in the
column.

All cells look fine except for the last one (final row).
The lines I draw in the far right and bottom of the cell
don't show. I can draw 1 pixel up from the bottom and 1
pixel left of the right border. What is preventing me
from painting the border around this last cell?

Who draws the grid lines? DataGrid? I need to override
whomever paints the lines so I can tailor the cell
borders.

-----Original Message-----
Hello Mark,

I'm afraid custom-drawn cells are not supposed to draw borders aroundthemselves. The grid has a feature called "GridLines" which will draw aborder around every cell in the grid.

Then, there's a "gotcha" with coordinates passed to DrawRect (or however itis called in .NET) routines, related to just right- bottom corner. I'dsuggest reviewing MSDN docs to ensure how EXACTLY the passed coordinates areinterpreted by this routine.

--
Dmitriy Lapshin [C# / .NET MVP]
X-Unity Test Studio
http://x-unity.miik.com.ua/teststudio.aspx
Bring the power of unit testing to VS .NET IDE

"Ma*********@hill.af.mil" <an*******@discussions.microsoft.com> wrote inmessage news:02****************************@phx.gbl...

I made a class that extends DataGridColumnStyle. In the Paint override I draw a border around each cell in the
column.

All cells look fine except for the last one (final row). The lines I draw in the far right and bottom of the cell don't show. I can draw 1 pixel up from the bottom and 1
pixel left of the right border. What is preventing me
from painting the border around this last cell?

.

[Dmitriy Lapshin [C# / .NET MVP]]

It's most likely the grid itself that draws the cell borders. However, you
cannot override this particular drawing step - you can only override the
whole grid painting routine.

--
Dmitriy Lapshin [C# / .NET MVP]
X-Unity Test Studio
http://x-unity.miik.com.ua/teststudio.aspx
Bring the power of unit testing to VS .NET IDE

<an*******@discussions.microsoft.com> wrote in message
news:14*****************************@phx.gbl...

Who draws the grid lines? DataGrid? I need to override
whomever paints the lines so I can tailor the cell
borders.