Bug with RowCount="1"

[Dvornik]

Bug with RowCount="1":

<wpfAutoGrid:AutoGrid RowCount="1" Columns="60,*">
    <Label Content="TEST" />
    <TextBox/>
</wpfAutoGrid:AutoGrid>

Result is strange:

No Label and TextBox's width doesn't stretch.

But with this code:

<wpfAutoGrid:AutoGrid RowCount="2" Columns="60,*">
    <Label Content="TEST" />
    <TextBox/>
</wpfAutoGrid:AutoGrid>

Result is OK:

P.S. I really like you container. Thank you very much.

[carbonrobot]

Good catch, not sure what is going on here. Looks like its placing all elements in the first row and first column.

[Dvornik]

Looks like its placing all elements in the first row and first column.

Yes. Exactly.

[zspitz]

RowCountChanged is not getting called for the default value, in this case 1. Therefore there are no row definitions, and PerformLayout returns early.

[boatschl]

Quickly jumping in here, as I had the same problem and there hasn't been anything done in 3 years.
The problem is that RowCount and ColumnCount are initially 1 (in dep. prop), but the underlying Grid's RowDefinitions and ColumnDefinitions never get that memo and the PerformLayout() method therefore exits early.

To fix this I added a constructor like this (it's not the most elegant solution but gets the job done):
public AutoGrid() : base() { Debug.Assert(ColumnDefinitions.Count == 0 && RowDefinitions.Count == 0); ColumnDefinitions.Add(new ColumnDefinition() { Width = GridLength.Auto }); RowDefinitions.Add(new RowDefinition() { Height = GridLength.Auto }); }