wpf 深度复制控件,打印控件

原文:wpf 深度复制控件,打印控件

<Window x:Class="WpfApp2.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:WpfApp2"
        mc:Ignorable="d"
        Name="thisWin"
        Title="MainWindow"  >
    <Grid   Background="AliceBlue">

        <ScrollViewer Name="myscrollvier" CanContentScroll="True" VerticalScrollBarVisibility="Auto"   >

            <StackPanel Name="PrintContainer" >
                <TextBox></TextBox>
                <TextBox></TextBox>
                <TextBox></TextBox>
                <TextBox></TextBox>
                <TextBox></TextBox>
                <TextBox></TextBox>
                <TextBox></TextBox>
                <TextBox></TextBox>
                <TextBox></TextBox>
                <TextBox></TextBox>
                <TextBox></TextBox>
                <TextBox></TextBox>
                <TextBox></TextBox>
                <TextBox></TextBox>
                <TextBox></TextBox>

            </StackPanel>

        </ScrollViewer>

        <Button Content="Print" Width="50" Height="20" Click="btnPrint" />

    </Grid>
</Window>

　　

using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Xml.Serialization;

namespace WpfApp2
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window, INotifyPropertyChanged
    {
        public MainWindow()
        {
            InitializeComponent();
            var t1 = new List<object>() { new { Key = "肯肯肯" }, new { Key = "吃嘱吃" } };
            Listbox_ItemsSource = t1;

        }

        public event PropertyChangedEventHandler PropertyChanged;
        private void RisePropertyChanged(string varName)
        {
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(varName));
        }

        private List<object> _Listbox_ItemsSource;
        /// <summary>
        /// listbox itemsSource
        /// </summary>
        public List<object> Listbox_ItemsSource
        {
            get { return _Listbox_ItemsSource; }
            set
            {
                _Listbox_ItemsSource = value;
                RisePropertyChanged("Listbox_ItemsSource");
            }
        }

        private void btnPrint(object sender, RoutedEventArgs e)
        {
            PrintDialog printDialog = new PrintDialog();

            if (printDialog.ShowDialog() == true)
            {
                var control = CloneControl(myscrollvier);

                System.Printing.PrintCapabilities capabilities = printDialog.PrintQueue.GetPrintCapabilities(printDialog.PrintTicket);
                double scale = Math.Min(capabilities.PageImageableArea.ExtentWidth / myscrollvier.ActualWidth, capabilities.PageImageableArea.ExtentHeight /
               myscrollvier.ActualHeight);

                control.LayoutTransform = new ScaleTransform(scale, scale);

                Size sz = new Size(capabilities.PageImageableArea.ExtentWidth, capabilities.PageImageableArea.ExtentHeight);
                //update the layout of the visual to the printer page size.
                control.Measure(sz);
                control.Arrange(new Rect(new Point(capabilities.PageImageableArea.OriginWidth, capabilities.PageImageableArea.OriginHeight), sz));

                printDialog.PrintVisual(control, "123");
            }

        }
        public T CloneControl<T>(T control) where T : Control, new()
        {
            string xaml = System.Windows.Markup.XamlWriter.Save(control);
            T rtb2 = System.Windows.Markup.XamlReader.Parse(xaml) as T;
            return rtb2;
        }
    }
}