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ActiveReports工作总结12——用Designer控件实现用户自定义报表印刷

2007-03-09 08:49 639 查看
用Designer控件实现用户自定义报表印刷

环境:

vs2005+ActiveReportsNet2

本节代码:http://files.cnblogs.com/batoosai/SimpleExample12.rar

前面我们所讲的报表,不管简单的还是复杂的,都遵循这样一个流程:

开发人员事先做好模版——〉用户运行程序——〉用户选择相应条件——〉打印或预览帐票——〉程序把用户选择的数据填充到我们的模版上,然后显示

可以说,用户除了选择条件,控制显示的数据之外,能做的控制很少(除非把一些简单的控制放在条件里面)。

本节我就讲讲如何用AR的Designer控件,实现用户自定义帐票印刷。

比如,要打印如下数据:

Class:

A

AttendNo:

1

Name:

Tony

Sex:

Male

当然我们可以先做好相应的模版,然后让用户选择数据就可以打印出来了。

但是,万一用户又需要一张类似的帐票,但需要把Name写在Class前面,那我们怎么办?

1)重新做一个。真是个好办法,下面的文章可以不用看了。

2)在用户的条件中加一个条件(比如一个radio button,先显示Class还是先显示Name),然后我们在模版里面判断一下这个条件,根据它来对模版进行相应的调整。

这种方法其实在我们项目也是常常用到的(比如判断显示subject的全称还是简称,就是在条件中放个Check box的条件,模版做相应判断)。

但在本例中却不适用,万一用户又要求把Class和AttendNo放一行上怎么办?用户的需求可是千变万化的。

3)用AR提供的Designer控件,可以实现用户自定义模版。

对于本例来说,用户可以自己把Class,name这些控件,拖到模版上,自己设定大小位置,然后打印。

ok,下面我们就来创建一个最简单的自定义帐票:

1,数据源如下:

Class

AttendNo

Name

Sex



1

Tony

male



2

Mary

female



3

Tom

male



4

Jack

male



5

Smith

male



1

John

male



2

Li

female



3

Zhang

female



4

Wang

male



1

Gong

male



2

Tian

female

2,需要打印出来的帐票也超级简单,就是根据Class来换页的一张普通二维表:

page1:

Class

AttendNo

Name

Sex



1

Tony

male



2

Mary

female



3

Tom

male



4

Jack

male



5

Smith

male

3,创建如下文件:



frmShowAR和前面几个例子一样,用来放view控件显示报表

test.mdb是数据源

ReportDesigner里面放Designer控件,让用户进行自定义操作

4,让我们来看ReportDesigner:



1)左侧放了个Designer控件:



2)右上放一些button控件,包括添加空白label,添加item,预览帐票的按钮。

3)右下放一个PropertyGrid控件,可以用来显示和修改Designer中所有控件的public property.



5,添加好几个控件之后,你可以先运行程序看看



哈哈,不错吧,在程序运行当中,你可以直接在模版上添加section了,和我们设计模版时完全一样,这下可以让用户自己来设计帐票了。

6,不过先在还不能在模版上增加控件。先在我们编写代码,使得可以在模版上创建控件,并且用PropertyGrid控件来修改这些控件的属性。最后通过Preview按钮预览帐票。

1)在模版上增加一个控件的方法:

先选中特定section (比如Detail,GroupFooter)

然后就可以用代码:

CType(Me.Designer1.Selection(0), DataDynamics.ActiveReports.PageHeader).Controls.Add(control)

2)预览的实现,把当前Designer的模版传给frmShowAR,然后在frmShowAR中显示这个模版

ReportDesigner.vb

Private Sub btnPreview_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnPreview.Click

Dim _frm As New frmShowAR()

_frm.Report = Me.Designer1.Report

_frm.ShowDialog(Me)

End Sub

frmShowAR.vb

Public Property Report() As DataDynamics.ActiveReports.ActiveReport

Get

Return _rpt

End Get

Set(ByVal Value As DataDynamics.ActiveReports.ActiveReport)

_rpt = Value

End Set

End Property

Private Sub frmShowAR_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

_rpt.Run()

Me.Viewer1.Document = _rpt.Document

End Sub

完整代码如下:

Public Class ReportDesigner

#Region "UI Event"

''' <summary>

''' Handles the Click event of the btnAddTextBox control.

''' </summary>

''' <param name="sender">The source of the event.</param>

''' <param name="e">The <see cref="System.EventArgs" /> instance containing the event data.</param>

''' <remarks></remarks>

''' <history>

''' [TonyGong] 3/8/2007 2:17 PM Created

''' </history>

Private Sub btnAddTextBox_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnAddTextBox.Click

If Me.listItem.SelectedIndex = -1 Then

Return

End If

Dim arControl As New DataDynamics.ActiveReports.TextBox

Select Case Me.listItem.SelectedItem.ToString()

Case "Class"

arControl.DataField = "Class"

Case "AttendNo"

arControl.DataField = "AttendNo"

Case "Name"

arControl.DataField = "Name"

Case "Sex"

arControl.DataField = "Sex"

End Select

Me.addControlToReport(arControl)

End Sub

''' <summary>

''' Handles the Load event of the ReportDesigner control.

''' </summary>

''' <param name="sender">The source of the event.</param>

''' <param name="e">The <see cref="System.EventArgs" /> instance containing the event data.</param>

''' <remarks></remarks>

''' <history>

''' [TonyGong] 3/8/2007 2:17 PM Created

''' </history>

Private Sub ReportDesigner_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

Me.PropertyGrid1.SelectedObject = Me.Designer1

End Sub

''' <summary>

''' Designer1_s the selection changed.

''' </summary>

''' <remarks></remarks>

''' <history>

''' [TonyGong] 3/8/2007 2:17 PM Created

''' </history>

Private Sub Designer1_SelectionChanged() Handles Designer1.SelectionChanged

Me.PropertyGrid1.SelectedObject = Me.Designer1.Selection(0)

End Sub

''' <summary>

''' Handles the Click event of the btnAddLabel control.

''' </summary>

''' <param name="sender">The source of the event.</param>

''' <param name="e">The <see cref="System.EventArgs" /> instance containing the event data.</param>

''' <remarks></remarks>

''' <history>

''' [TonyGong] 3/8/2007 2:17 PM Created

''' </history>

Private Sub btnAddLabel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnAddLabel.Click

Me.addControlToReport(New DataDynamics.ActiveReports.Label)

End Sub

''' <summary>

''' Handles the Click event of the btnPreview control.

''' </summary>

''' <param name="sender">The source of the event.</param>

''' <param name="e">The <see cref="System.EventArgs" /> instance containing the event data.</param>

''' <remarks></remarks>

''' <history>

''' [TonyGong] 3/8/2007 2:17 PM Created

''' </history>

Private Sub btnPreview_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnPreview.Click

Dim rpt As New DataDynamics.ActiveReports.ActiveReport()

Dim _stream As New System.IO.MemoryStream()

Me.Designer1.Report.SaveLayout(_stream)

_stream.Position = 0

rpt.LoadLayout(_stream)

_stream.Close()

Dim _frm As New frmShowAR()

_frm.Report = rpt

_frm.ShowDialog(Me)

End Sub

#End Region

#Region "Private Method"

''' <summary>

''' Adds the control to report.

''' </summary>

''' <param name="control">The control.</param>

''' <remarks></remarks>

''' <history>

''' [TonyGong] 3/8/2007 2:17 PM Created

''' </history>

Private Sub addControlToReport(ByVal control As DataDynamics.ActiveReports.ARControl)

Select Case Me.Designer1.Selection(0).GetType.FullName

Case GetType(DataDynamics.ActiveReports.Detail).FullName

CType(Me.Designer1.Selection(0), DataDynamics.ActiveReports.Detail).Controls.Add(control)

Case GetType(DataDynamics.ActiveReports.PageHeader).FullName

CType(Me.Designer1.Selection(0), DataDynamics.ActiveReports.PageHeader).Controls.Add(control)

Case GetType(DataDynamics.ActiveReports.PageFooter).FullName

CType(Me.Designer1.Selection(0), DataDynamics.ActiveReports.PageFooter).Controls.Add(control)

Case GetType(DataDynamics.ActiveReports.GroupHeader).FullName

CType(Me.Designer1.Selection(0), DataDynamics.ActiveReports.GroupHeader).Controls.Add(control)

Case GetType(DataDynamics.ActiveReports.GroupFooter).FullName

CType(Me.Designer1.Selection(0), DataDynamics.ActiveReports.GroupFooter).Controls.Add(control)

Case Else

Return

End Select

End Sub

#End Region

End Class

7,在frmShowAR中给模版设置数据源

Private Sub frmShowAR_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

'Show the table1

Dim conn As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=test.mdb;Persist Security Info=False"

Dim cmd As String = "Select * from table1"

Dim adapter As New OleDbDataAdapter(cmd, conn)

Dim ds As New DataSet

adapter.Fill(ds)

_rpt.DataSource = ds

_rpt.DataMember = ds.Tables(0).TableName

_rpt.Run()

Me.Viewer1.Document = _rpt.Document

End Sub

8,ok!我们的工作结束了,接下去用户可以在程序中自己设计模版了

1)用户运行程序,出来如下界面:



2)用户自己添加group,添加控件,调整大小,增加控件的框线等等,如下:



3)不要忘记给GroupHeader1设置换页字段



4)ok,按Preview吧,看看我们的成果:



9,呵呵,现在用户想怎么打就怎么打了。

也许可能有人要问了,每次运行程序,用户都要去设置模版,都麻烦啊。

恩,我们可以增加一个save和load模版的功能,让用户自己把设计好的模版保存下来,今后直接load。

这个超级简单,只要增加2个控件,编码如下就可以了

Private Sub btnSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSave.Click

Me.Designer1.ExecuteAction(DataDynamics.ActiveReports.Design.DesignerAction.FileSave)

End Sub

Private Sub btnLoad_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnLoad.Click

Me.Designer1.ExecuteAction(DataDynamics.ActiveReports.Design.DesignerAction.FileOpen)

End Sub

10,好了,本节就到这。

AR的自定义功能很强大的,运用的好,很多帐票都可以用自定义实现。

当然,文中举的例子比较简单,仅当抛砖引玉。
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