WPF

public class SortObservableCollection<T> : ObservableCollection<T>
{
  public void Sort<TResult>(Func<T, TResult> expression, ListSortDirection sortDirection)
  {
    switch (sortDirection)
    {
      case ListSortDirection.Ascending:
        Sort(Items.OrderBy(expression));
        break;
      case ListSortDirection.Descending:
        Sort(Items.OrderByDescending(expression));
        break;
    }
  }

  private void Sort(IEnumerable<T> items)
  {
    var sort = items.ToList();
    foreach (var item in sort)
    {
      Move(IndexOf(item), sort.IndexOf(item));
    }
  }
}

Pete O'Hanlon wrote:

case ListSortDirection.Ascending:
Sort(Items.OrderBy(expression));
break;
case ListSortDirection.Descending:
Sort(Items.OrderByDescending(expression));
break;

public class MyData {
            public string Caption;
            public double Result;
        }

ObservableCollection<MyData> data = new ObservableCollection<MyData>();
            data.Add(new MyData(){ Caption = "A", Result = 10 });
            data.Add(new MyData() { Caption = "B", Result = 1 });
            data.Add(new MyData() { Caption = "C", Result = 5 });
            data.Add(new MyData() { Caption = "D", Result = 3 });

var sortedData = from mydata in data
                 orderby mydata.Result
                 select mydata;

foreach (var d in sortedData) {
               Console.WriteLine(d.Caption + " - " + d.Result.ToString());
           }

BlitzPackage wrote:

I thought that LINQ didn't work with observable collections.

BlitzPackage wrote:

I thought that LINQ didn't work with observable collections

microsoft_kc wrote:

I am using WrapPanel with VirtualizationMode="Recycling"

Mark Salsbery
Microsoft MVP - Visual C++

Eric Vonjacson wrote:

If any changes are made to the collection "colltest". The togglebutton's "IsChecked" could update accordingly.

Mark Salsbery
Microsoft MVP - Visual C++

brucedkyle wrote:

Learn more about Microsoft emerging technologies

<Style x:Key="StyleUDPBaseButton" TargetType="{x:Type Button}" >
    <Style.Triggers>
        <Trigger Property="IsEnabled" Value="false">
            <Setter Property="Opacity" Value="0.40" />
        </Trigger>
    </Style.Triggers>
</Style>

<Style x:Key="ToolbarButtonNewServiceOrder" TargetType="{x:Type Button}"
                BasedOn="{StaticResource StyleToolbarButtonEx}" >
    <Setter Property="ToolTip" Value="Create a new service order" />
    <Setter Property="Template" >
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type Button}">
                <Image Source="/CometResources;component/Images/GlassServiceOrder64.png" />
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

<Grid Name="gridToolbarObjects" MinHeight="41" MaxHeight="41">
    <Button Name="buttonNewServiceOrder" Style="{DynamicResource ToolbarButtonNewServiceOrder}" />
</Grid>

<Application.Resources>
    <ResourceDictionary>
        <ResourceDictionary.MergedDictionaries>
            <ResourceDictionary Source="/CometResources;component/Styles.xaml" />
            <ResourceDictionary Source="/CometResources;component/Buttons.xaml" />
        </ResourceDictionary.MergedDictionaries>
    </ResourceDictionary>
</Application.Resources>

startIndex cannot be larger than length of string.<br />
Parameter name: startIndex