get Value DataPicker and Radio Button

Question

i want to create advence search but i have problem to get RadioButton Value and DataPicker Value .

this is my Xml Code :

 <PersianDateControls:PersianDatePicker Name="DateEndPicker" HorizontalAlignment="Left" Margin="32,470,0,0" VerticalAlignment="Top" Width="115" Background="White" Height="25" Grid.Column="2"/>
   <PersianDateControls:PersianDatePicker Name="DateStartPicker" HorizontalAlignment="Left" Margin="32,418,0,0" VerticalAlignment="Top" Width="115" Background="White" Grid.Column="2"/>
    <RadioButton x:Name="Rad_Active" Content="Active" IsChecked="True" HorizontalAlignment="Left" Margin="407,433,0,0" VerticalAlignment="Top" Foreground="White" FontFamily="Iranian Sans"/>
    <RadioButton x:Name="Rad_DeActive" Content="DeActive" HorizontalAlignment="Left" Margin="272,433,0,0" VerticalAlignment="Top" Foreground="White" FontFamily="Iranian Sans"/>

how can i solve this problem ?

private void btn_search_MouseDown(object sender, MouseButtonEventArgs e)
    {
        string Name = txt_Name.Text;
        string Family = txt_family.Text;

        var QSearch = db.Tbl_User.Where(u => u.Name == Name).Where(u => u.Family == Family).ToList();
        dataGrid.ItemsSource = QSearch;
    }

show me this error when i using this code for compate to date

Edit

When i Use The RadioButton Show me this Error

bool Active;
if (Rad_Active.IsChecked) // Error 1 here
{
    Active = true;
}
else if (Rad_DeActive.IsChecked) // Error 1 here
{
    Active = false;
}

Error 1

Cannot implicitly convert type "bool?" to "bool".

Edit 2

DateTime Date = DateEndPicker.SelectedDate; // Error 2 here

Error 2

Cannot implicitly convert type 'Arash.PersianDate' to 'System.DateTime'

Edit 3

PersianDate DateEnd = DateEndPicker.SelectedDate;
PersianDate DateStart = DateEndPicker.SelectedDate;

var QSearch = db.Tbl.User.Where(u => u.Name == Name)
    .Where(u => u.Family == Family)
    .Where(u => u.Active == Active)
    .Where(u => u.DateReg >= DateStart && u.DateReg <= DateEnd).ToList(); // Error 3 here
dataGrid.ItemsSource = QSearch

Error 3

Severity Code Description Project File Line Suppression State Error CS0019 Operator '>=' cannot be applied to operands of type 'DateTime' and 'PersianDate' AnbarDari F:\\MyProject\\AnbarDari\\AnbarDari\\Win_Users.xaml.cs 77 Active

Answer 1

Look into just one radio button. Just set bool? Active = Rad_Active.IsChecked bool? Active = Rad_Active.IsChecked This will set your active flag based on the status of that single checkbox.

Answer 2

As IsChecked is a nullable bool you can't just do a straight cast. If it's null the cast will fail. Instead you can do this:

if (Rad_Active.IsChecked == true)
{
    Active = true;
}

As for converting between a PerisanDate and a regular DateTime there will be a method or property that returns a regular DateTime , but without knowing exactly which picker you are using it's hard to give a definitive answer. The IDE should be able to give you some clues via autocomplete or viewing the definition of the class (in Visual Studio, right click -> Go to definition)