C# wpf固定文档动态数据
我正在创建C# wpf固定文档动态数据,c#,wpf,fixeddocument,C#,Wpf,Fixeddocument,我正在创建FixedDocument并动态向其中添加页面 public partial class Window1 : Window { FixedDocument fd = new FixedDocument(); TextBlock page1Text = new TextBlock(); public Window1() { InitializeComponent(); } private void Print_Click
FixedDocument
并动态向其中添加页面
public partial class Window1 : Window
{
FixedDocument fd = new FixedDocument();
TextBlock page1Text = new TextBlock();
public Window1()
{
InitializeComponent();
}
private void Print_Click(object sender, RoutedEventArgs e)
{
PrintDialog pd = new PrintDialog();
fd.DocumentPaginator.PageSize = new Size(pd.PrintableAreaWidth, pd.PrintableAreaHeight);
for (int i = 0; i <= 5; i++)
{
FixedPage page1 = new FixedPage();
page1.Width = fd.DocumentPaginator.PageSize.Width;
page1.Height = fd.DocumentPaginator.PageSize.Height;
pages();
page1.Children.Add(page1Text);
PageContent page1Content = new PageContent();
((IAddChild)page1Content).AddChild(page1);
fd.Pages.Add(page1Content);
}
DocumentViewer dr = new DocumentViewer();
dr.Height = 700;
dr.Document =fd;
stack.Children.Add(dr);
}
private void pages()
{
page1Text.Text = "This is a test";
page1Text.FontSize = 40;
page1Text.Margin = new Thickness(96);
}
}
公共部分类窗口1:窗口
{
FixedDocument fd=新的FixedDocument();
TextBlock page1Text=新建TextBlock();
公共窗口1()
{
初始化组件();
}
私有作废打印\单击(对象发送者,路由目标e)
{
PrintDialog pd=新建PrintDialog();
fd.DocumentPaginator.PageSize=新尺寸(pd.PrintableAreaWidth,pd.PrintableAreaHeight);
对于(int i=0;i这是一个很容易诊断的错误;一个可视化对象只能有一个父对象,否则您将在VisualTree
中有一个循环依赖项。请查看您的代码以检查您是否使用同一个可视化对象两次
如果希望视觉效果同时出现在两个位置,则需要复制它;如果第二次使用是有意的,则可以通过从父视觉效果中移除自身来取消父视觉效果。例如(canvas.parent.Remove(canvas)
)
在发布的代码示例中,我可以确定至少一个发生这种情况的实例,并在下面详细说明
您在while(loop)
块中将vCanvas
的实例添加到多个。您需要为每个迭代创建一个新的Canvas
var visual = /* unknown */;
var fd = new FixedDocument();
while(loop)
{
var canvas = PageInit();
var page = new FixedPage();
page.Width = visual.DocumentPaginator.PageSize.Width;
page.Height = visual.DocumentPaginator.PageSize.Height;
page.Children.Add(canvas);
PageContent pageContent = new PageContent();
((IAddChild)pageContent).AddChild(page);
visual.Pages.Add(pageContent);
}
在本例中,我将在PageInit()
中打开画布
我做到了。解决办法如下
private void Print_Click(object sender, RoutedEventArgs e)
{
PrintDialog pd = new PrintDialog();
fd.DocumentPaginator.PageSize = new Size(pd.PrintableAreaWidth,fd.PrintableAreaHeight);
for (int i = 0; i <= 5; i++)
{
FixedPage page1 = new FixedPage();
page1.Width = fd.DocumentPaginator.PageSize.Width;
page1.Height = fd.DocumentPaginator.PageSize.Height;
UIElement page1Text = pages();
page1.Children.Add(page1Text);
PageContent page1Content = new PageContent();
((IAddChild)page1Content).AddChild(page1);
fd.Pages.Add(page1Content);
}
DocumentViewer dr = new DocumentViewer();
dr.Height = 700;
dr.Document =fd;
stack.Children.Add(dr);
}
private UIElement pages()
{
Canvas pcan = new Canvas();
TextBlock page1Text = new TextBlock();
page1Text.Text = "This is a test";
page1Text.FontSize = 40;
page1Text.Margin = new Thickness(96);
pcan.Children.Add(page1Text);
return pcan;
}
private void打印\u单击(对象发送方,路由目标)
{
PrintDialog pd=新建PrintDialog();
fd.DocumentPaginator.PageSize=新尺寸(pd.可打印区域宽度,fd.可打印区域高度);
对于(int i=0;i),对于“canvas”,它现在给出了相同的错误,即该元素已经是另一个父元素的一部分。我使用了canvas canvas=new canvas();canvas=printinit();它的语法是否正确。由于您尚未发布完整的代码示例,我无法进一步帮助您(我也不想).我已经编辑了我的答案,以便更清楚地解释这个问题。祝你好运。
private void Print_Click(object sender, RoutedEventArgs e)
{
PrintDialog pd = new PrintDialog();
fd.DocumentPaginator.PageSize = new Size(pd.PrintableAreaWidth,fd.PrintableAreaHeight);
for (int i = 0; i <= 5; i++)
{
FixedPage page1 = new FixedPage();
page1.Width = fd.DocumentPaginator.PageSize.Width;
page1.Height = fd.DocumentPaginator.PageSize.Height;
UIElement page1Text = pages();
page1.Children.Add(page1Text);
PageContent page1Content = new PageContent();
((IAddChild)page1Content).AddChild(page1);
fd.Pages.Add(page1Content);
}
DocumentViewer dr = new DocumentViewer();
dr.Height = 700;
dr.Document =fd;
stack.Children.Add(dr);
}
private UIElement pages()
{
Canvas pcan = new Canvas();
TextBlock page1Text = new TextBlock();
page1Text.Text = "This is a test";
page1Text.FontSize = 40;
page1Text.Margin = new Thickness(96);
pcan.Children.Add(page1Text);
return pcan;
}