WPF Listview selecting item problem

Question

3.00/5 (2 votes)

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Hello,
I have this listView in xaml:

XML

<ListView Height="100" HorizontalAlignment="Left" Margin="32,196,0,0" Name="listView1" VerticalAlignment="Top" Width="438">
    <ListView.View>
        <GridView>
            <GridViewColumn Header="ID" DisplayMemberBinding="{Binding ID}"/>
            <GridViewColumn Header="Description" DisplayMemberBinding="{Binding Description}"/>
        </GridView>
    </ListView.View>
</ListView>

and i am adding items from code:

C#

listView1.Items.Add(new {ID="item1", Description="item2" } );
listView1.Items.Add(new {ID="item3", Description="item4" } );
listView1.Items.Add(new {ID="item5", Description="item6" } );

The problem is that always the first item is selected, and i want to select other items, clicking on other items wont work, what should i do?

Posted 18-Oct-11 3:47am

Gabriel Sas

Updated 18-Oct-11 4:02am

v2

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Wayne Gaylard 18-Oct-11 10:09am

Your code works for me. What is it exactly you are trying to achieve?

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N_tro_P · Accepted Answer · 2011-10-18T04:45:00

You can use custom objects rather than annonomous. That should solve it.

i.e.

C#

public class CustomListItem
{
    public string ID {get; set;}
    public string Description {get; set;}
}

...

listView1.Items.Add(new CustomListItem(){ID = "item1", Description="item2"};

Also if you want a specific item to be selected you can then hold on to it.

C#

CustomListItem _default = null;
...

_default = new CustomListItem(){ID = "item1", Description="item2"};
listView1.Items.Add(_default);

...
listView1.SelectedItem = _default;

FYI - the reason being is that the annonomous objects are on the stack (I believe... I dont use them really but the behavior leads one to this assumption). By making your own object it is reference based so even if the props are the exact same, they are different. Until you override the Equals and HashCode to say otherwise.

Gabriel Sas · Accepted Answer · 2011-10-18T04:38:00

i figured it out, it's like OMG.

i cant have the same items in the list:

listView1.Items.Add(new {ID="item1", Description="item2" } );

listView1.Items.Add(new {ID="item1", Description="item2" } );

listView1.Items.Add(new {ID="item1", Description="item2" } );

listView1.Items.Add(new {ID="item1", Description="item2" } );

listView1.Items.Add(new {ID="item1", Description="item2" } );

because it will always select the first one.

any solution if i do have the same items?

WPF Listview selecting item problem

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