Question

我正在尝试以横向或纵向打印本地报告。

private void Export(LocalReport report)
{
    Warning[] warnings;
    m_streams = new List<Stream>();

    var deviceInfo = new StringBuilder();
    deviceInfo.AppendLine("<DeviceInfo>");
    deviceInfo.AppendLine("<OutputFormat>EMF</OutputFormat>");
    //"11.7in", "8.3in"
    deviceInfo.AppendLine("<PageWidth>11.7in</PageWidth>");
    deviceInfo.AppendLine("<PageHeight>8.3in</PageHeight>");

    deviceInfo.AppendLine("</DeviceInfo>");

    report.Render("Image", deviceInfo.ToString(), CreateStream, out warnings);            
    foreach (var stream in m_streams) { stream.Position = 0; }
}

我有2个不同的报告，一个是纵向模式，一个是横向模式，但是我为PageWidth和PageSize更改的值无关紧要，它始终以纵向打印。我在11.7英寸和8.3英寸之间交换宽度和高度，但它总是以纵向模式打印。

Answer 1

您可以使用ReportPageSettings.IsLandscape属性来验证报告是否已定义为格局（报告属性＆gt;页面设置＆gt;方向）。

如果是横向，则需要在DeviceInfo声明中交换纸张宽度和纸张高度。

Dim rdlLocalReport As New LocalReport
Dim strDeviceInfo As String

With rdlLocalReport.GetDefaultPageSettings

    Dim intPaperSizeWidth As Integer = 0
    Dim intPaperSizeHeight As Integer = 0

    If .IsLandscape Then
        intPaperSizeWidth = .PaperSize.Height
        intPaperSizeHeight = .PaperSize.Width
    Else
        intPaperSizeWidth = .PaperSize.Width
        intPaperSizeHeight = .PaperSize.Height
    End If

    strDeviceInfo = "<DeviceInfo>" _
        & "<OutputFormat>EMF</OutputFormat>" _
        & "<PageWidth>" & Strings.Replace(intPaperSizeWidth / 100, ",", ".") & "in</PageWidth>" _
        & "<PageHeight>" & Strings.Replace(intPaperSizeHeight / 100, ",", ".") & "in</PageHeight>" _
        & "<MarginTop>" & Strings.Replace(.Margins.Top / 100, ",", ".") & "in</MarginTop>" _
        & "<MarginLeft>" & Strings.Replace(.Margins.Left / 100, ",", ".") & "in</MarginLeft>" _
        & "<MarginRight>" & Strings.Replace(.Margins.Right / 100, ",", ".") & "in</MarginRight>" _
        & "<MarginBottom>" & Strings.Replace(.Margins.Bottom / 100, ",", ".") & "in</MarginBottom>" _
        & "</DeviceInfo>"

End With

如果您使用PrintDocument，则还需要相应地更改PageSettings.Landscape属性。

Dim printDoc As New PrintDocument
printDoc.DefaultPageSettings.Landscape = rdlLocalReport.GetDefaultPageSettings.IsLandscape

Answer 2

您可以使用“报告”（LocalReport / ServerReport）中的“ GetDefaultPageSettings（）”来执行此操作并从reportviewer内部窃取此代码：

private string CreateEMFDeviceInfo(int startPage, int endPage)
{
    string text = "";
    PageSettings pageSettings = PageSettings;
    int hundrethsOfInch = pageSettings.Landscape ? pageSettings.PaperSize.Height : pageSettings.PaperSize.Width;
    int hundrethsOfInch2 = pageSettings.Landscape ? pageSettings.PaperSize.Width : pageSettings.PaperSize.Height;
    text = string.Format(CultureInfo.InvariantCulture, "<MarginTop>{0}</MarginTop><MarginLeft>{1}</MarginLeft><MarginRight>{2}</MarginRight><MarginBottom>{3}</MarginBottom><PageHeight>{4}</PageHeight><PageWidth>{5}</PageWidth>", ToInches(pageSettings.Margins.Top), ToInches(pageSettings.Margins.Left), ToInches(pageSettings.Margins.Right), ToInches(pageSettings.Margins.Bottom), ToInches(hundrethsOfInch2), ToInches(hundrethsOfInch));
    return string.Format(CultureInfo.InvariantCulture, "<DeviceInfo><OutputFormat>emf</OutputFormat><StartPage>{0}</StartPage><EndPage>{1}</EndPage>{2}</DeviceInfo>", startPage, endPage, text);
}

private static string ToInches(int hundrethsOfInch)
{
    return ((double)hundrethsOfInch / 100.0).ToString(CultureInfo.InvariantCulture) + "in";
}

通过这种方式，您可以获取报表定义中设置的页面方向和页边距。

在没有预览的情况下在rdlc中打印横向/纵向

2 个答案: