Customizing the appearance of a Persian DatePicker (JalaliDatePickerControl)

Question

I have a Persian DatePicker that works properly, and I only want to add to it some public properties to customize its appearance.

What I'd want to add is as follows:

• Background
• BorderBrush
• CornerRadius

I want to be able to access these three attributes directly in XAML and C# (Intellisense). Additionally, I would like DatePicker's text to be closer together, as the image above shows.

You can download JalaliDatePickerControl.dll from here.

I tried to modify the dll using dnSpy, but I was unsuccessful.

After the aforementioned dll has been recompiled using .NET Framework 4.5, please upload it to github.com or nuget.org.

Answer 1

using System;
using System.Windows;

public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();

        var grid = new System.Windows.Controls.Primitives.UniformGrid();
        grid.Background = Brushes.LightGreen;
        grid.Columns = 1;
        grid.Rows = 2;
        this.Content = grid;

        var jdp1 = new JalaliDatePicker.JalaliDatePickerControl();
        jdp1.HorizontalAlignment = HorizontalAlignment.Center;
        jdp1.VerticalAlignment = VerticalAlignment.Center;
        jdp1.BorderBrush = Brushes.Black;
        jdp1.BorderThickness = new Thickness(1);
        jdp1.Margin = new Thickness(5);
        grid.Children.Add(jdp1);

        var jdp2 = new JalaliDatePicker.JalaliDatePickerControl();
        jdp2.HorizontalAlignment = HorizontalAlignment.Center;
        jdp2.VerticalAlignment = VerticalAlignment.Center;
        jdp2.BorderBrush = Brushes.Black;
        jdp2.BorderThickness = new Thickness(1);
        jdp2.Margin = new Thickness(5);
        grid.Children.Add(jdp2);

        jdp2.Loaded += OnPickerLoaded;

    }

    private void OnPickerLoaded(object sender, EventArgs e)
    {
        var jdp = (JalaliDatePicker.JalaliDatePickerControl)sender;

        var border = VisualTreeHelper.GetChild(jdp, 0) as Border;

        //var MainGrid = jdp.FindName("MainGrid") as Grid;
        var YearBlock = jdp.FindName("YearBlock") as TextBox;
        //var MonthBlock = jdp.FindName("MonthBlock") as TextBox;
        //var DayOfMonth = jdp.FindName("DayOfMonthBlock") as TextBox;
        //var TimeGrid = jdp.FindName("TimeGrid") as Grid;
        //var HourBlock = jdp.FindName("HourBlock") as TextBox;
        //var MinuteBlock = jdp.FindName("MinuteBlock") as TextBox;
        //var DayOfWeekBlock = jdp.FindName("DayOfWeekBlock") as TextBlock;
        var PickerBtn = jdp.FindName("PickerBtn") as Button;
        var PickerPopup = jdp.FindName("PickerPopup") as System.Windows.Controls.Primitives.Popup;


        jdp.Background = Brushes.Pink;
        jdp.BorderThickness = new Thickness(2);

        SetBorderCorner(jdp, new CornerRadius(5));
        SetBorderCorner(PickerBtn, new CornerRadius(0, 5, 5, 0));

        YearBlock.Margin = new Thickness(YearBlock.Margin.Left, YearBlock.Margin.Top, YearBlock.Margin.Right - 5, YearBlock.Margin.Bottom);
        YearBlock.HorizontalContentAlignment = HorizontalAlignment.Right;

        PickerPopup.LayoutTransform = new ScaleTransform(2, 2);
    }

    private void SetBorderCorner(DependencyObject d, CornerRadius cr)
    {
        var count = VisualTreeHelper.GetChildrenCount(d);
        if (count == 1 && VisualTreeHelper.GetChild(d, 0) is Border border)
        {
            border.CornerRadius = cr;
        }
    }
}