我正在尝试使用RenderTargetBitmap渲染列表视图。下面的代码仅呈现一页。它不会根据列表视图将页面添加到下载的pdf中。此代码获取页面上显示的快照，而不是整个列表的快照。我点击了以下链接：XAML To PDF Conversion
这是我在文件后面的代码：
using Syncfusion.Pdf;
using Syncfusion.Pdf.Graphics;
using System;
using System.Collections.Generic;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices.WindowsRuntime;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.Graphics.Display;
using Windows.Graphics.Imaging;
using Windows.Storage;
using Windows.Storage.Pickers;
using Windows.UI.Popups;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Media.Imaging;
using Windows.UI.Xaml.Navigation;
namespace XAMLtoPDF_Sample
{
/// <summary>
/// An empty page that can be used on its own or navigated to within a Frame.
/// </summary>
public sealed partial class MainPage : Page
{
public class ItemsListPDF
{
public string CarrierName { get; set; }
public string PackageID { get; set; }
public int Bill { get; set; }
public string Location { get; set; }
public string ItemType { get; set; }
public string Quantity { get; set; }
public string DeliverTo { get; set; }
public string Sender { get; set; }
public string CreationDate { get; set; }
public string PONumber { get; set; }
public string ControlNumber { get; set; }
}
public MainPage()
{
this.InitializeComponent();
var item1 = new ItemsListPDF { CarrierName = "asdasd", PackageID = "erwerwer", Bill = 1, Location = "er wrrty", ItemType = "xcvxcv", Quantity = "4", DeliverTo = "kiran", Sender = "tushar", CreationDate = "12/12/19", PONumber = "1", ControlNumber = "1" };
var item2 = new ItemsListPDF { CarrierName = "asdasd", PackageID = "erwerwer", Bill = 1, Location = "er wrrty", ItemType = "xcvxcv", Quantity = "4", DeliverTo = "kiran", Sender = "tushar", CreationDate = "12/12/19", PONumber = "1", ControlNumber = "1" };
var item3 = new ItemsListPDF { CarrierName = "asdasd", PackageID = "erwerwer", Bill = 1, Location = "er wrrty", ItemType = "xcvxcv", Quantity = "4", DeliverTo = "kiran", Sender = "tushar", CreationDate = "12/12/19", PONumber = "1", ControlNumber = "1" };
var item4 = new ItemsListPDF { CarrierName = "asdasd", PackageID = "erwerwer", Bill = 1, Location = "er wrrty", ItemType = "xcvxcv", Quantity = "4", DeliverTo = "kiran", Sender = "tushar", CreationDate = "12/12/19", PONumber = "1", ControlNumber = "1" };
var item5 = new ItemsListPDF { CarrierName = "asdasd", PackageID = "erwerwer", Bill = 1, Location = "er wrrty", ItemType = "xcvxcv", Quantity = "4", DeliverTo = "kiran", Sender = "tushar", CreationDate = "12/12/19", PONumber = "1", ControlNumber = "1" };
var item6 = new ItemsListPDF { CarrierName = "asdasd", PackageID = "erwerwer", Bill = 1, Location = "er wrrty", ItemType = "xcvxcv", Quantity = "4", DeliverTo = "kiran", Sender = "tushar", CreationDate = "12/12/19", PONumber = "1", ControlNumber = "1" };
var item7 = new ItemsListPDF { CarrierName = "asdasd", PackageID = "erwerwer", Bill = 1, Location = "er wrrty", ItemType = "xcvxcv", Quantity = "4", DeliverTo = "kiran", Sender = "tushar", CreationDate = "12/12/19", PONumber = "1", ControlNumber = "1" };
var item8 = new ItemsListPDF { CarrierName = "asdasd", PackageID = "erwerwer", Bill = 1, Location = "er wrrty", ItemType = "xcvxcv", Quantity = "4", DeliverTo = "kiran", Sender = "tushar", CreationDate = "12/12/19", PONumber = "1", ControlNumber = "1" };
var item9 = new ItemsListPDF { CarrierName = "asdasd", PackageID = "erwerwer", Bill = 1, Location = "er wrrty", ItemType = "xcvxcv", Quantity = "4", DeliverTo = "kiran", Sender = "tushar", CreationDate = "12/12/19", PONumber = "1", ControlNumber = "1" };
var item10 = new ItemsListPDF { CarrierName = "asdasd", PackageID = "erwerwer", Bill = 1, Location = "er wrrty", ItemType = "xcvxcv", Quantity = "4", DeliverTo = "kiran", Sender = "tushar", CreationDate = "12/12/19", PONumber = "1", ControlNumber = "1" };
var item11 = new ItemsListPDF { CarrierName = "asdasd", PackageID = "erwerwer", Bill = 1, Location = "er wrrty", ItemType = "xcvxcv", Quantity = "4", DeliverTo = "kiran", Sender = "tushar", CreationDate = "12/12/19", PONumber = "1", ControlNumber = "1" };
var item12 = new ItemsListPDF { CarrierName = "asdasd", PackageID = "erwerwer", Bill = 1, Location = "er wrrty", ItemType = "xcvxcv", Quantity = "4", DeliverTo = "kiran", Sender = "tushar", CreationDate = "12/12/19", PONumber = "1", ControlNumber = "1" };
var itemsList = new List<ItemsListPDF>();
itemsList.Add(item1);
itemsList.Add(item1);
itemsList.Add(item2);
itemsList.Add(item3);
itemsList.Add(item4);
itemsList.Add(item5);
itemsList.Add(item6);
itemsList.Add(item7);
itemsList.Add(item8);
itemsList.Add(item9);
itemsList.Add(item10);
itemsList.Add(item11);
itemsList.Add(item12);
PDFItemsList.ItemsSource = itemsList;
}
private async void button_Click(object sender, RoutedEventArgs e)
{
//Creating new PDF Document
PdfDocument document = new PdfDocument();
//Initializing to render to Bitmap
var logicalDpi = DisplayInformation.GetForCurrentView().LogicalDpi;
var renderTargetBitmap = new RenderTargetBitmap();
//Create the Bitmpap from xaml page
await renderTargetBitmap.RenderAsync(SyncfusionForm);
var pixelBuffer = await renderTargetBitmap.GetPixelsAsync();
//Save the XAML in Bitmap image
using (var stream = new Windows.Storage.Streams.InMemoryRandomAccessStream())
{
var encoder = await BitmapEncoder.CreateAsync(BitmapEncoder.JpegEncoderId, stream);
encoder.SetPixelData(
BitmapPixelFormat.Bgra8,
BitmapAlphaMode.Ignore,
(uint)renderTargetBitmap.PixelWidth,
(uint)renderTargetBitmap.PixelHeight,
logicalDpi,
logicalDpi,
pixelBuffer.ToArray());
await encoder.FlushAsync();
//Load and draw the Bitmap image in PDF
PdfImage img = PdfImage.FromStream(stream.AsStream());
if (img.Width > img.Height)
document.PageSettings.Orientation = PdfPageOrientation.Portrait;
else
document.PageSettings.Orientation = PdfPageOrientation.Landscape;
var section = document.Sections.Add();
section.PageSettings.Size = new SizeF(img.Width, img.Height);
PdfPage page = section.Pages.Add();
page.Graphics.DrawImage(img, new RectangleF(0, 0, img.Width, img.Height));
}
//Save the Pdf document
MemoryStream docStream = new MemoryStream();
document.Save(docStream);
document.Close(true);
Save(docStream, "Sample.pdf");
}
#region Helper Methods
async void Save(MemoryStream stream, string filename)
{
stream.Position = 0;
StorageFile stFile;
if (!(Windows.Foundation.Metadata.ApiInformation.IsTypePresent("Windows.Phone.UI.Input.HardwareButtons")))
{
FileSavePicker savePicker = new FileSavePicker();
savePicker.DefaultFileExtension = ".pdf";
savePicker.SuggestedFileName = "Sample";
savePicker.FileTypeChoices.Add("Adobe PDF Document", new List<string>() { ".pdf" });
stFile = await savePicker.PickSaveFileAsync();
}
else
{
StorageFolder local = Windows.Storage.ApplicationData.Current.LocalFolder;
stFile = await local.CreateFileAsync(filename, CreationCollisionOption.ReplaceExisting);
}
if (stFile != null)
{
Windows.Storage.Streams.IRandomAccessStream fileStream = await stFile.OpenAsync(FileAccessMode.ReadWrite);
Stream st = fileStream.AsStreamForWrite();
st.SetLength(0);
st.Write((stream as MemoryStream).ToArray(), 0, (int)stream.Length);
st.Flush();
st.Dispose();
fileStream.Dispose();
MessageDialog msgDialog = new MessageDialog("Do you want to view the Document?", "File created.");
UICommand yesCmd = new UICommand("Yes");
msgDialog.Commands.Add(yesCmd);
UICommand noCmd = new UICommand("No");
msgDialog.Commands.Add(noCmd);
IUICommand cmd = await msgDialog.ShowAsync();
if (cmd == yesCmd)
{
// Launch the retrieved file
bool success = await Windows.System.Launcher.LaunchFileAsync(stFile);
}
}
}
#endregion
}
}
这是Xaml代码：
<Page
x:Class="XAMLtoPDF_Sample.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:XAMLtoPDF_Sample"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d">
<Grid x:Name="SyncfusionForm" Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
<!--<TextBlock Text="First Name
" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="64,91,0,0" RenderTransformOrigin="-3.711,-1.5" Width="130" Foreground="#FF1038EC" Height="30"/>
<TextBlock Text="Last Name" HorizontalAlignment="Left" VerticalAlignment="Top" RenderTransformOrigin="1.842,4.5" Margin="64,128,0,0" Foreground="#FF1038EC"/>
<TextBox HorizontalAlignment="Left" Height="20" TextWrapping="Wrap" VerticalAlignment="Top" Width="212" Margin="293,128,0,0" RenderTransformOrigin="0.351,0.761"/>
<TextBox HorizontalAlignment="Left" Height="20" TextWrapping="Wrap" VerticalAlignment="Top" Width="211" Margin="292,91,0,0"/>
<TextBlock Text="Email" HorizontalAlignment="Left" VerticalAlignment="Top" RenderTransformOrigin="1.395,6" Margin="64,163,0,0" Foreground="#FF1038EC"/>
<TextBlock Text="Mobile No
" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="64,200,0,0" Width="84" Foreground="#FF1038EC" RenderTransformOrigin="0.637,0.548" Height="30"/>
<TextBox HorizontalAlignment="Left" Height="20" TextWrapping="Wrap" VerticalAlignment="Top" Width="211" Margin="292,205,0,0"/>
<TextBox HorizontalAlignment="Left" Height="20" TextWrapping="Wrap" VerticalAlignment="Top" Width="211" Margin="294,165,0,0" />
<TextBlock Text="Education Grade
" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="51,295,0,0" Width="120" Foreground="#FFAA0909" RenderTransformOrigin="0.439,-0.619" Height="26"/>
<TextBlock Text="General Information" HorizontalAlignment="Left" VerticalAlignment="Top" RenderTransformOrigin="2.211,2.346" Margin="51,65,0,0" Foreground="#FFAA0909" Width="156"/>
<TextBlock Text="Highest Qualification" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="51,335,0,0" RenderTransformOrigin="0.842,-1.231" Foreground="#FF1038EC"/>
<CheckBox Content="Post Graduate" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="64,406,0,0" Foreground="#FF1038EC" RenderTransformOrigin="0.5,0.5" Height="20" Width="126">
</CheckBox>
<CheckBox Content="College" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="367,370,0,0" Foreground="#FF1038EC" Width="95" Height="24"/>
<CheckBox Content="Bachelor degree" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="236,370,0,0" Foreground="#FF1038EC" Height="24" Width="125"/>
<CheckBox Content="Associate degree" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="64,370,0,0" Width="143" Foreground="#FF1038EC" Height="24"/>
<CheckBox Content="MBA" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="237,411,0,0" Foreground="#FF1038EC" RenderTransformOrigin="-0.75,0.503" Height="26" Width="62">
</CheckBox>-->
<Button x:Name="button" Click="button_Click" Content="Submit" HorizontalAlignment="Center" VerticalAlignment="Top" Height="31"/>
<ListView Grid.Row="1" x:Name="PDFItemsList" Height="Auto" VerticalAlignment="Top" Margin="0,40,0,0" Foreground="Black" Background="White" Visibility="Visible" IsItemClickEnabled="False">
<ListView.ItemContainerStyle>
<Style TargetType="ListViewItem">
<Setter Property="BorderThickness" Value="0,0,0,1" />
<Setter Property="BorderBrush" Value="Black"/>
<Setter Property="Foreground" Value="Black"/>
</Style>
</ListView.ItemContainerStyle>
<ListView.ItemTemplate>
<DataTemplate>
<ContentControl>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition/>
<ColumnDefinition/>
<ColumnDefinition/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<Grid>
<Grid.RowDefinitions>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
</Grid.RowDefinitions>
<TextBlock Text="{Binding CarrierName}" Foreground="Black" Margin="20,20,0,0"/>
<TextBlock Text="{Binding PackageID}" Foreground="Black" Grid.Row="1" Margin="20,20,0,0"/>
<TextBlock Text="{Binding Bill}" Foreground="Black" Grid.Row="2" Margin="20,20,0,0"/>
</Grid>
<Grid Grid.Column="1">
<Grid.RowDefinitions>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
</Grid.RowDefinitions>
<TextBlock Text="{Binding Location}" Foreground="Black" Margin="20,20,0,0"/>
<TextBlock Text="{Binding ItemType}" Foreground="Black" Grid.Row="1" Margin="20,20,0,0"/>
<TextBlock Text="{Binding Quantity}" Foreground="Black" Grid.Row="2" Margin="20,20,0,0"/>
</Grid>
<Grid Grid.Column="2" HorizontalAlignment="Right">
<Grid.RowDefinitions>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
</Grid.RowDefinitions>
<TextBlock Text="{Binding DeliverTo}" HorizontalAlignment="Right" Foreground="Black" Margin="20,20,0,0"/>
<TextBlock Text="{Binding Sender}" HorizontalAlignment="Right" Foreground="Black" Grid.Row="1" Margin="20,20,0,0"/>
<TextBlock Text="" Foreground="Black" HorizontalAlignment="Right" Grid.Row="2" Margin="20,20,0,0"/>
<TextBlock Text="Signature" HorizontalAlignment="Right" Foreground="Black" FontWeight="ExtraLight" Grid.Row="3" Margin="20,20,0,0"/>
</Grid>
<Grid Grid.Column="3" HorizontalAlignment="Right">
<Grid.RowDefinitions>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
</Grid.RowDefinitions>
<TextBlock Text="{Binding CreationDate}" HorizontalAlignment="Right" Foreground="Black" Margin="20,20,0,0"/>
<TextBlock Text="{Binding PONumber}" HorizontalAlignment="Right" Grid.Row="1" Foreground="Black" Margin="20,20,0,0"/>
<TextBlock Text="{Binding ControlNumber}" HorizontalAlignment="Right" Grid.Row="2" Foreground="Black" Margin="20,20,0,0"/>
<TextBlock Text="" Foreground="Black" Grid.Row="3" Margin="20,20,0,0"/>
<TextBlock Text="Print Name Here" HorizontalAlignment="Right" Foreground="Black" FontWeight="ExtraLight" Grid.Row="4" Margin="20,20,0,0"/>
</Grid>
</Grid>
</ContentControl>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</Grid>
谢谢。