WPF

<DataGrid Grid.Column="1" x:Name="GrdInsCardsLookup" AutoGenerateColumns="False" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" MaxWidth="600" Margin="3,6,3,-1" Background="{x:Null}">
               <DataGrid.BorderBrush>
                   <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
                       <GradientStop Color="Black" Offset="0"/>
                       <GradientStop Color="#FFE22020" Offset="1"/>
                   </LinearGradientBrush>
               </DataGrid.BorderBrush>

               <DataGrid.Columns>

                   <DataGridTextColumn Header="ID"  Width="130"  Binding="{Binding NationalId}"/>
                   <DataGridTextColumn Header="Name"  Width="140" Binding="{Binding Name}"/>
                   <DataGridTextColumn Header="Phone" Width="120" Binding="{Binding Phone}"/>
                   <DataGridTextColumn Header="City" Width="100" Binding="{Binding City}"/>

               </DataGrid.Columns>

           </DataGrid>

public DataSet AllInsDataSet = new DataSet();
public List<Instructer> InstructersByName = new List<Instructer>();

private void FillInsList() //2-Step Get Instructers List with there cities names from SQl Server
       {
           AllInsDataSet.Clear();
           var con1 = new SqlConnection(Connectionstring);
           SqlCommand cmd1;
           cmd1 =
               new SqlCommand(
                   "SELECT S1.[ins_id],S1.[ins_national_id],S1.[fname] as FName,S1.[father_name] as 'FatherName',S1.[lname] as 'LName',S1.[city_id],C1.[city],S1.[address],S1.[email],S1.[phone],S1.[mobile],S1.[birthday],S1.[pic_id],S1.[folder_id],S1.[other] FROM [DB_SchoolManager].[dbo].[tbl_ins_cards] S1 Inner Join [DB_SchoolManager].[dbo].[tbl_cities] C1 on S1.city_id=C1.city_id",
                   con1);
           SqlDataAdapter da1;
           da1 = new SqlDataAdapter(cmd1);
           da1.Fill(AllInsDataSet);
       }

private void FillLookupInsGrdByName(string name)
       {
           InstructersByName.Clear();
           GrdStuCardsLookup.ItemsSource = InstructersByName;
           string upname = name.ToUpper();

           for (int i = 0; i < AllInsDataSet.Tables[0].Rows.Count; i++)
           {
               if (((AllInsDataSet.Tables[0].Rows[i][2] + " " + AllInsDataSet.Tables[0].Rows[i][3] + " " + AllInsDataSet.Tables[0].Rows[i][4]).ToUpper()).Contains(upname))
               {
                   InstructersByName.Add(new Instructer()
                   {
                       Id = int.Parse(AllInsDataSet.Tables[0].Rows[i][0].ToString()),
                       NationalId = AllInsDataSet.Tables[0].Rows[i][1].ToString(),
                       Name = AllInsDataSet.Tables[0].Rows[i][2] + " " + AllInsDataSet.Tables[0].Rows[i][3] + " " + AllInsDataSet.Tables[0].Rows[i][4],
                       City = AllInsDataSet.Tables[0].Rows[i][6].ToString(),
                       Phone = AllInsDataSet.Tables[0].Rows[i][9].ToString(),
                       Picid = AllInsDataSet.Tables[0].Rows[i][12].ToString(),
                       Folder = AllInsDataSet.Tables[0].Rows[i][13].ToString()
                   });
               }
           }

           GrdInsCardsLookup.ItemsSource = InstructersByName;


       }

public class Instructer
 {
     public int Id { set; get; }
     public string NationalId { set; get; }
     public string Name { set; get; }
     public string Fname { set; get; }
     public string Lname { set; get; }
     public string FatherName { set; get; }
     public int Cityid { set; get; }
     public string City { set; get; }
     public string Address { set; get; }
     public string Email { set; get; }
     public string Phone { set; get; }
     public string Mobile { set; get; }
     public DateTime Birthday { set; get; }
     public string Picid { set; get; }
     public string Folder { set; get; }
 }

<ScrollViewer Name="TrackScroller" . . .
    <Grid x:Name="TrackGrid"  . . .
         <Grid.ColumnDefinitions>
             ...
                <local:TrackModule x: . . .

private List<bool> _OnOffValues;
public List<bool> OnOffValues
{
    get { return _OnOffValues; }
    set
    {
        if (_OnOffValues != value)
        {
            _OnOffValues = value;
            RaisePropertyChanged("OnOffValues");
        }
    }
}
public MyControl()
{
    InitializeComponent();
    this.DataContext = this;
    OnOffValues = new List<bool>();
    for (int x = 0; x < 24; x++)
    {
        OnOffValues.Add(true);
    }
}

<CheckBox Grid.Row="0"
            Grid.Column="0"
            IsChecked="{Binding OnOffValues[0], ElementName=control}"/>

System.Windows.Data Error: 17 : Cannot get 'Item[]' value (type 'Boolean') from 'OnOffValues' (type 'List`1'). BindingExpression:Path=OnOffValues[0]; DataItem='MyControl' (Name='control'); target element is 'CheckBox' (Name=''); target property is 'IsChecked' (type 'Nullable`1') ArgumentOutOfRangeException:'System.ArgumentOutOfRangeException: Specified argument was out of the range of valid values.
Parameter name: index'

var dragObj = new DataObject();
dragObj.SetFileDropList(new StringCollection() { @"H:\Temp\popeye.svg" });
DragDrop.DoDragDrop(new Window(), dragObj, DragDropEffects.Copy);

<datepicker>

        <datepicker.selecteddate>
            <binding path="DateDeb" stringformat="d" validatesondataerrors="True">
                  <binding.validationrules>
                        <communpresentation:regledatevalide>




        <datepicker.resources>

               <Setter Property="Control.Template">
                   <Setter.Value>
                        <ControlTemplate>
                          <CommunPresentation:MaskedTextbox Mask="##/##/####" Text="{Binding Path=DateDeb}" />
                        </controltemplate>
                    </setter.Value>
                </setter>

<Style x:Key="backButton" TargetType="{x:Type Button}">

    <Setter Property="SnapsToDevicePixels" Value="True"/>
    <Setter Property="OverridesDefaultStyle" Value="True"/>
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type Button}">

                <Grid>

                    <Ellipse Grid.Column="0"
                             Grid.Row="0"
                             Canvas.Top="2"
                             Canvas.Left="2"
                             Fill="Transparent"
                             Height="35"
                             Width="35"
                             StrokeThickness="2"
                             Stroke="#6E6E6E"
                             Margin="2"
                             x:Name="part_ellipse"/>

                    <Path Grid.Column="0"
                          Grid.Row="0"
                          Margin="12,10,0,0"
                          Fill="#6E6E6E"
                          Data="M 0 10 L 10 0 L 10 20 Z"
                          x:Name="part_path"/>

                </Grid>

                <ControlTemplate.Triggers>
                    <Trigger Property="IsMouseOver" Value="True">
                        <Setter TargetName="part_ellipse" Property="Fill" Value="#CCCCCC" />
                        <Setter TargetName="part_path" Property="Fill" Value="#CCCCCC" />
                    </Trigger>
                </ControlTemplate.Triggers>

            </ControlTemplate>
        </Setter.Value>
    </Setter>

</Style>