Question

我在.net wpf中有一个要求。在本地文件夹中有一些格式为 .gif 或 .jpg 的图像。我准备了一个字符串列表来存储文件名我想通过按钮点击将列表中的所有图像发送到打印机。

我搜索了Google但是对于Print文档，我们只能提供一个文件PrintFileName。

但我想为每个循环提供每个文件名。任何人都可以解释它是如何可能的？

谢谢..

Answer 1

问题主题看起来像错了...... 回答;

var filenames = Directory.EnumerateFiles(@"c:\targetImagePath", "*.*", SearchOption.AllDirectories)
                        .Where(s => s.EndsWith(".gif") || s.EndsWith(".jpg") || s.EndsWith(".bmp"));
foreach (var filename in filenames)
{
    //use filename
}

Answer 2

Private Sub btnPrint_Click(sender As Object, e As RoutedEventArgs) Handles btnPrint.Click
    Dim printDialog = New System.Windows.Controls.PrintDialog()
    If printDialog.ShowDialog = False Then
        Return
    End If
    Dim fixedDocument = New FixedDocument()
    fixedDocument.DocumentPaginator.PageSize = New System.Windows.Size(printDialog.PrintableAreaWidth, printDialog.PrintableAreaHeight)
    For Each p In _lablefilenames
        Dim page As New FixedPage()
        Dim info As System.IO.FileInfo = New FileInfo(p)
        'If info.Extension.ToLower = ".gif" Then
        '    page.Width = fixedDocument.DocumentPaginator.PageSize.Height
        '    page.Height = fixedDocument.DocumentPaginator.PageSize.Width
        'Else
        page.Width = fixedDocument.DocumentPaginator.PageSize.Width
        page.Height = fixedDocument.DocumentPaginator.PageSize.Height
        'End If
        Dim img As New System.Windows.Controls.Image()
        ' PrintIt my project's name, Img folder
        'Dim uriImageSource = New Uri(p, UriKind.RelativeOrAbsolute)
        'img.Source = New BitmapImage(uriImageSource)
        Dim Bimage As New BitmapImage()
        Bimage.BeginInit()
        Bimage.CacheOption = BitmapCacheOption.OnLoad
        Bimage.UriSource = New Uri(p)
        If info.Extension.ToLower = ".gif" Then Bimage.Rotation += Rotation.Rotate90
        Bimage.EndInit()
        'img.Width = 100
        'img.Height = 100
        img.Source = Bimage
        page.Children.Add(img)
        Dim pageContent As New PageContent()
        DirectCast(pageContent, IAddChild).AddChild(page)
        fixedDocument.Pages.Add(pageContent)
    Next
    ' Print me an image please!
    printDialog.PrintDocument(fixedDocument.DocumentPaginator, "Print")
End Sub

将多个文档发送到打印机

2 个答案: