CODEWITHSUNDEEP
c#wpfxamldatagrid
Gleb
Gleb

Reputation: 1432

Make WPF DataGrid column editable

I need to make my DataGrid column editable, but can't figure out how to make this. When I try to edit column I catch an exception "EditItem is not allowed for this view".

My XAML:

    <DataGrid IsReadOnly="False" AutoGenerateColumns="False" Margin="6,6,5,18" Name="dataGrid1" ItemsSource="{Binding MyDictionary}" CellEditEnding="dataGrid1_editCells">
        <DataGrid.Columns>
            <DataGridTextColumn IsReadOnly="True" Header="Name" Binding="{Binding Key}" />
            <DataGridTextColumn IsReadOnly="False" Header="Value" Binding="{Binding Value}"  />
        </DataGrid.Columns>
    </DataGrid>

And .cs:

public partial class MyView : Window
{
    private Dictionary<string, string> myDictionary = new Dictionary<string, string>();

    public Dictionary<string, string> Dictionary { get { return myDictionary ; } set { myDictionary  = value; } }

    public MyView()
    {
        // Here is some code that fills dictionary

        InitializeComponent();
        this.DataContext = this;
    }
}

What is the problem? How can I make my second column editable?

Upvotes: 1

Views: 1499

Answers (2)

wiero
wiero

Reputation: 2246

DataGrid works with collections and Dictioanry is a collection of KeyValuePair. If you look at this struct you'll see you that it's not mutable.

Upvotes: 0

brunnerh
brunnerh

Reputation: 184296

If you bind to a dictionary it enumerates the contents as KeyValuePair instances, which is a struct. You cannot edit the members of a struct keeping the same instance (and the properties are get-only in this case).

Bind to a list of class instances instead.

Upvotes: 2

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