按内容高度增长区段报告

Question

我试图在ActiveReport的细节部分添加内容。但截面高度限制在2英寸以内。它只需要(2/0.2 = )10项。我希望这个部分随着内容的增加而增加高度，这样它就可以采用所有的项目。看来.CanGrow不起作用了。我使用的代码如下所示。

Dim lObjSecRpt As New GrapeCity.ActiveReports.SectionReport()
Dim lObjLbl As New GrapeCity.ActiveReports.SectionReportModel.Label()
Dim c As Single = 0.2F

Try

lObjSecRpt.Sections.InsertPageHF()
lObjSecRpt.Sections(0).BackColor = Color.WhiteSmoke
lObjSecRpt.Sections(0).Height = 0.0F

lObjSecRpt.Sections.Insert(1, New GrapeCity.ActiveReports.SectionReportModel.Detail())
lObjSecRpt.Sections(1).BackColor = Color.WhiteSmoke
lObjSecRpt.Sections(1).CanGrow = True

For Each dr As DataRow In mObjDtReport.Rows
    lObjLbl = New GrapeCity.ActiveReports.SectionReportModel.Label()

    lObjLbl.Alignment = GrapeCity.ActiveReports.Document.Section.TextAlignment.Left
    lObjLbl.Font = New System.Drawing.Font("Arial", 10, FontStyle.Regular)
    lObjLbl.Location = New PointF(0.0F, c)
    lObjLbl.Height = 0.2F
    lObjLbl.Width = 1.0F
    lObjLbl.Text = CStr(dr("RptObjNam"))
    lObjSecRpt.Sections(1).Controls.Add(lObjLbl)
    c += c
Next

Me.rptViewer.LoadDocument(lObjSecRpt)

Answer 1

阿玛尔

在代码中，您要做的是动态地创建节并将控件添加到节中。这就像在运行时创建一个报表布局一样。由于您只是将控件添加到detail部分，因此detail部分的format事件不会为每个控件触发，因为它不绑定到任何数据。相反，您只是在它中添加控件。您可以检查和示例动态创建报告的这里。

如果希望“详细信息”部分增长以显示所有添加的控件，则需要根据其内部控件的总高度增加其高度。例如，检查下面的示例代码，它演示了如何做到这一点。您可以简单地将此代码添加到Form_Load事件以验证它。

    Dim lObjLbl As New GrapeCity.ActiveReports.SectionReportModel.Label()
Dim c As Single = 0.2F
Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
    Dim rpt As New GrapeCity.ActiveReports.SectionReport
    rpt.Sections.InsertPageHF()
    rpt.Sections(0).BackColor = Color.Yellow
    rpt.Sections(0).Height = 1.0F
    rpt.Sections.Insert(1, New GrapeCity.ActiveReports.SectionReportModel.Detail())
    rpt.Sections(1).Name = "Detail"
    rpt.Sections("Detail").BackColor = Color.Gainsboro
    rpt.Sections("Detail").CanGrow = True

    Dim i As Integer
    For i = 0 To 20
        Dim lObjLbl As New GrapeCity.ActiveReports.SectionReportModel.Label()
        lObjLbl.Alignment = GrapeCity.ActiveReports.Document.Section.TextAlignment.Left
        lObjLbl.Font = New System.Drawing.Font("Arial", 10, FontStyle.Regular)
        lObjLbl.Location = New PointF(0.0F, c)
        lObjLbl.Size = New SizeF(1.0F, 0.2F)
        lObjLbl.Text = "Record: " + i.ToString()
        lObjLbl.BackColor = Color.Aqua
        rpt.Sections("Detail").Controls.Add(lObjLbl)
        c += 0.2
    Next
    Dim height As Double = 0
    For Each control As GrapeCity.ActiveReports.SectionReportModel.ARControl In rpt.Sections("Detail").Controls
        height = height + control.Height
    Next
    rpt.Sections("Detail").Height = height
    Viewer1.LoadDocument(rpt)
End Sub

我希望这能帮到你。