WPF datagrid empty row at bottom

Question

I bind my datagrid using

//fill datagrid
public DataTable GameData
{
    get
    {
        DataSet ds = new DataSet();
        FileStream fs = new FileStream(IMDB.WebPage.Class.Config.XMLPath,
        FileMode.Open, FileAccess.Read);
        StreamReader reader = new StreamReader(fs, Encoding.Default);
        ds.ReadXml(reader);
        fs.Close();
        DataTable temp = ds.Tables[0];
        return ds.Tables[0];
     }
 }

For some reason I get an empty row at the bottom. And sometimes after clicking on some buttons and checkboxes in the grid, more empty rows are added.

Why is this? And how do I block this?

Tomi Junnila · Accepted Answer · 2009-11-23 18:44:45Z

508

Sounds like you probably have CanUserAddRows set to true for the DataGrid. Just add

CanUserAddRows="false"

to the XAML.

answered Nov 23, 2009 at 18:44

Tomi Junnila

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3 Comments

Tobias Valinski Over a year ago

keep in mind that even if the check box in the grid's properties is unchecked you have to explicitly add that line of code to hide the additional row (or check and uncheck the check box)

ZZZ Over a year ago

If you don't want code behind, add attribute CanUserAddRows="False". It looks like a bug in WPF that you have to set it to false explicitly.

Shimmy Weitzhandler Over a year ago

I rather have the opposite problem. It does not create an empty row, while I'd rather want that.

ΩmegaMan · Accepted Answer · 2016-06-21 18:26:50Z

28

It also works with the attribute:

IsReadOnly="true"

edited Jun 21, 2016 at 18:26

ΩmegaMan

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answered Jul 10, 2014 at 10:47

Arti

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1 Comment

RDV Over a year ago

This worked better than CanUserAddRows & CanUserDeleteRows

Glorfindel · Accepted Answer · 2022-01-17 09:05:45Z

14

If your backing collection that implements IEditableCollectionView returns true from its CanAddNew method, the DataGrid will assume that is what you want to do.

There's a good overview here:Overview of the editing features in the WPF DataGrid

edited Jan 17, 2022 at 9:05

Glorfindel

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answered Nov 10, 2010 at 16:51

Alastair Maw

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Comments

Kate Gregory · Accepted Answer · 2013-08-02 20:33:07Z

3

If you're creating DataGrid on-the-fly through Source Code...

DataGrid grid = new DataGrid();

grid.CanUserAddRows = false;

//... 
grid.AutoGenerateColumns = false;
grid.Margin = new Thickness(10,20,10,10);
grid.VerticalAlignment = VerticalAlignment.Top;
grid.ItemsSource = //... and so on

edited Aug 2, 2013 at 20:33

Kate Gregory

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answered Jun 9, 2011 at 19:26

Francisco Campos

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1 Comment

Alexandru Dicu Over a year ago

If you do this while using WPF, you're doing it wrong.

AdvApp · Accepted Answer · 2020-03-18 17:09:00Z

3

Though the OP was asking how to REMOVE the empty row, the title isn't specific, and this article appeared in my search while trying to figure out how to ADD the empty row. I found that, for the empty row to appear, it not only needs to have CanUserAddRows="True" but the ItemsSource needs to have a default constructor public MyClass () { }.

answered Mar 18, 2020 at 17:09

AdvApp

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