在没有预览的情况下在rdlc中打印横向/纵向

Question

我试图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; }
}

我有两个不同的报告，一个是纵向模式，另一个是横向模式，但是我为PageWidth和PageSize更改的值无关紧要，它始终以纵向打印。我已经在11.7英寸和8.3英寸之间交换宽度和高度，但它始终以纵向模式打印。

Answer 1

您可以使用ReportPageSettings.IsLandscape属性来验证报告是否定义为横向（报告属性>页面设置>方向）。

如果是横向，您需要在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，您还需要相应地更改PageSettings.Landscape属性。

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