Binding DataGrid to List in wpf
I'm trying to bind a List
to a DataGrid
.
Here is the code snippet:
pu开发者_开发百科blic class Parson
{
public string LastName { get; set; }
public string FirstName { get; set; }
public Parson(string lastName, string firstName)
{
LastName = lastName;
FirstName = firstName;
}
}
public class Persons : List<Parson>
{
// Parameterless constructor
public Persons()
{
}
public new void Add(Person parson)
{
base.Add(parson);
}
}
the code behind:
Persons persons = new Persons();
persons.Add(new Parson("New","Person");
dataGrid1.DataContext = persons;
xaml:
<my:DataGrid Name="dataGrid1"
xmlns:my="http://schemas.microsoft.com/wpf/2008/toolkit"
CanUserAddRows="True"
ItemsSource="{Binding}"
AutoGenerateColumns="False">
<my:DataGrid.Columns>
<my:DataGridTextColumn Header="First Name" Binding="{Binding Path=FirstName}"/>
<my:DataGridTextColumn Header="Last Name" Binding="{Binding Path=LastName}"/>
</my:DataGrid.Columns>
</my:DataGrid>
The result is that an empty grid is displayed! Anyone know why?
Try setting AutoGenerateColumns = true
(Note: This answer was verified in .NET Framework v4.0):
A simple, 4-part operation...
- first, on your DataGrid control in the XAML mark-up I recommend you set
AutoGenerateColumns="False"
(you should be able to do this manually better than they can do it automatically) - second, on the same control set
ItemsSource="{Binding}"
, which informs the grid it will be getting it's column and row data from a source not defined at design-time. - third, construct the columns to look how you want them to look and for each bind to the column data with something like
Binding="{Binding Path=UniqueID}"
. Note that the value after Path is interpolated so mind things like case-sensitivity. For the List<> you are targetting the value will presumably be one of the property-names from objects in your target List<>. Rinse and repeat as many times as needed for each column in your DataGrid. - fourth, in your form code-behind, within the constructor or during form load or wherever it best suits your needs, set the DataContext of your grid. This should take a form similar to
{gridControlName}.DataContext = {target-List<>}
When the form is loaded its grid should auto-populate with content from objects in the your List<>.
Try setting the ItemsSource instead of DataContext, and remove the ItemsSource={Binding}
from your XAML. That may do the trick.
Edit:
I just checked some code I wrote that uses the same DataGrid control (WPF Toolkit), and I do in fact set the ItemsSource instead of DataContext. If you need an example, let me know.
In your DataGrid try:
ItemsSource="{Binding Path=.}"
This has worked sucessfully for me.
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