WEB controls turn pages

xiaoxiao2021-03-06  102

A total of three parts:. VB, Builder and Design

Imports system.componentmodel

Imports System.Web.ui.htmlControls

Imports System.Web.ui

Imports System.Web.ui.WebControls

Imports system.data

Imports system.data.OracleClient

Parsechildren (false), Persistchildren (false), _

Designer (Gettype (ChangePageDesigner), _

ToolboxData ("<{0}: changepage runat = server> ")> Public class changepage

Inherits System.Web.ui.WebControls.Panel

Implements inamingcontainer

Private Withevents TxtPage As NewTextBox

Private Withevents BTNFirst As NewButton

Private Withevents BTNNext As NewButton

Private Withevents bstnprevious as newbutton

Private Withevents btnlast as newbutton

Private withevents btngo as newbutton

Private Withevents LBLNOWPAGE As NewLabel

Private Withevents LBLallPage As NewLabel

Private Withevents LBLALLITEMS AS NEWLABEL

Private Withevents LBLPAGE AS NewLabel

Private HTMLTabel as Table

Private HTMLROW AS TABLEROW

Private iscreated as boolean

Private MDataGrid As String

Public Event PageIndexchange As EventHandler

Public Sub New ()

End Sub

#Region "プ プ パティ"

NotifyParentProperty (True), PersistenceMode (PersistenceMode.INNerProperty), _

Category ("ChildControl"), Description ("検 検 ボ ン ン")> _

Public Readonly Property PageTextBox () AS NewTextBox

Get

Me.ensureChildControls ()

Return TxtPage

END GET

End Property

NotifyParentProperty (True), PersistenceMode (PersistenceMode.INNerProperty), _

Category ("ChildControl"), Description ("First Page")> _Public Readonly Property FirstpageButton () AS NewButton

Get

Me.ensureChildControls ()

Return btnfirst

END GET

End Property

NotifyParentProperty (True), PersistenceMode (PersistenceMode.INNerProperty), _

Category ("ChildControl"), Description ("Add Ido")> _

Public Readonly Property NextPageButton () AS NewButton

Get

Me.ensureChildControls ()

Return btnnext

END GET

End Property

NotifyParentProperty (True), PersistenceMode (PersistenceMode.INNerProperty), _

Category ("ChildControl"), Description ("Previous Page ボ ン")> _

Public Readonly Property PrepageButton () As NewButton

Get

Me.ensureChildControls ()

Return bstnprevious

END GET

End Property

NotifyParentProperty (True), PersistenceMode (PersistenceMode.INNerProperty), _

Category ("ChildControl"), Description ("Last page ボ タ ン")> _

Public Readonly Property LastPageButton () AS NewButton

Get

Me.ensureChildControls ()

Return btnlast

END GET

End Property

NotifyParentProperty (True), PersistenceMode (PersistenceMode.INNerProperty), _

Category ("ChildControl"), Description ("Migrating ボ ン ン")> _

Public Readonly Property ChangeButton () As NewButton

Get

Me.ensureChildControls ()

Return BTNGO

END GET

End Property

NotifyParentProperty (True), PersistenceMode (PersistenceMode.INnerProperty), _Category ("ChildControl"), Description ("Now ベ ベ")> _

Public Readonly Property NowpageLabel () AS NewLabel

Get

Me.ensureChildControls ()

Return LBLNOWPAGE

END GET

End Property

NotifyParentProperty (True), PersistenceMode (PersistenceMode.INNerProperty), _

Category ("ChildControl"), Description ("Total Page ベ ベ")> _

Public Readonly Property AllpageLabel () AS NewLabel

Get

Me.ensureChildControls ()

Return LBLallPage

END GET

End Property

NotifyParentProperty (True), PersistenceMode (PersistenceMode.INNerProperty), _

Category ("ChildControl"), Description ("Total Project ベ ベ ベ")> _

Public Readonly Property AlliteMslabel () AS NewLabel

Get

Me.ensureChildControls ()

Return LBLALLITEMS

END GET

End Property

NotifyParentProperty (True), PersistenceMode (PersistenceMode.INNerProperty), _

Category ("ChildControl"), Description ("Page ベ ベ ベ")> _

Public Readonly Property Pagelabel () AS NewLabel

Get

Me.ensureChildControls ()

Return LBLPAGE

END GET

End Property

_

Public property DataGrid () AS String

Get

Return MDataGrid

END GET

Set (byval value as string)

MDataGrid = Value

End set

End Property

#End region

Protected Overrides Sub CreateChildControls ()

HTMLTabel = New Table

HTMLROW = New Tables

IF txtpage is nothing then

Iscreated = falsetxtPage = new new deskTextBox

TXTPAGE.ID = mybase.id & "_pagetextbox"

Else

Iscreated = true

END IF

IF btnfirst is nothing then

Iscreated = false

btnfirst = new new newbutton

Btnfirst.id = mybase.id & "_firstpagebutton"

Else

Iscreated = true

END IF

IF btnnext is nothing then

Iscreated = false

btnnext = new newbutton

btnnext.id = mybase.id & "_nextpagebutton"

Else

Iscreated = true

END IF

IF btnprevious is nothing then

Iscreated = false

Btnprevious = new newbutton

Btnprevious.id = mybase.id & "_prepagebutton"

Else

Iscreated = true

END IF

IF btnlast is nothing then

Iscreated = false

btnlast = new new new

Btnlast.id = mybase.id & "_lastpagebutton"

Else

Iscreated = true

END IF

IF btngo is nothing then

Iscreated = false

Btngo = new newbutton

btngo.id = mybase.id & "_changepagebutton"

Else

Iscreated = true

END IF

If lblnowpage is nothing then

Iscreated = false

LBLNOWPAGE = New NewLabel

LBLNOWPAGE.ID = mybase.id & "_nowpagelabel"

Else

Iscreated = true

END IF

If lblalpage is nothing then

Iscreated = false

LBLallPage = New NewLabel

LBLallPage.ID = mybase.id & "_allpagelabel"

Else

Iscreated = true

END IF

If lballitems is nothing then

Iscreated = false

LBLALLITEMS = New NewLabel

LBLALLITEMS.ID = MyBase.ID & "_allItemslabel"

Else

Iscreated = true

END IF

If lblpage is nothing then

Iscreated = false

LBLPAGE = New New NewLabel

LBLPAGE.ID = mybase.id & "_pagelabel"

Else

Iscreated = true

End ifmybase.createchildControls ()

If iscreated = false kil

LBLPage.Text = "Page へ"

btnfirst.text = "First Page"

btnprevious.text = "Previous"

btnnext.text = "Type Page"

btnlast.text = "Last"

btngo.text = "Migration"

LBLNOWPAGE.TEXT = "0"

LBLallPage.Text = "/ 0 pages"

LBLALLITEMS.TEXT = "whole て: 0 pieces"

TXTPAGE.WIDTH = Unit.pixel (40)

END IF

Htmltabel.cellpadding = 0

HTMLTabel.cellspacing = 0

HTMLTabel.Rows.Add (HTMLROW)

Htmlrow.cells.Add (New TableCell)

Htmlrow.cells (0). Horizontalalign = horizontalalign.Left

HTMLROW.CELLS (0) .controls.add (btnfirst)

HTMLROW.CELLS (0) .controls.add (btnprevious)

HTMLROW.CELLS (0) .controls.add (btnnext)

HTMLROW.CELLS (0) .controls.add (btnlast)

Htmlrow.cells.Add (New TableCell)

Htmlrow.cells (1) .horizontalalign = horizontalalign.Left

HTMLROW.CELLS (1) .controls.add (txtpage)

Htmlrow.cells.Add (New TableCell)

Htmlrow.cells (2) .horizontalalign = horizontalalign.Left

HTMLROW.CELLS (2) .controls.add (lblpage)

Htmlrow.cells.Add (New TableCell)

Htmlrow.cells (3) .horizontalalign = horizontalalign.left

HTMLROW.CELLS (3) .controls.add (btngo)

Htmlrow.cells.Add (New TableCell)

Htmlrow.cells (4) .hizontalalign = horizontalalign.left

HTMLROW.CELLS (4) .controls.add (lblnowpage)

Htmlrow.cells.Add (New TableCell)

Htmlrow.cells (5) .horizontalalign = horizontalalign.Left

HTMLROW.CELLS (5) .controls.add (lblallpage)

Htmlrow.cells.Add (New TableCell)

Htmlrow.cells (6) .horizontalalign = Horizontalalign.Left

Htmlrow.cells (6) .controls.add (lblallitems)

Mybase.controls.add (HTMLTabel)

End Sub

Protected Overrides Sub Render (Byval Output As System.Web.ui.htmlTextWriter)

Mybase.ensurechildControls ()

RenderChildren (Output)

End Sub

Protected Overrides Sub AddparsedSubObject (Byval Obj As Object)

Dim btnidname as array

Dim lblidname as array

If TypeOf Obj Is NewTextBox Then

TXTPAGE = OBJ

END IF

IF TypeOf Obj Is Newbutton Then

BtnidName = Split (ctype (obj, newbutton) .id.toString, "_")

SELECT CASE BTNIDNAME (1) .tostring

Case "firstpagebutton"

Me.btnfirst = OBJ

Case "NextPageButton"

Me.btnnext = OBJ

Case "prepagebutton"

Me.btnprevious = OBJ

Case "lastpagebutton"

Me.btnlast = OBJ

Case "ChangePageButton"

Me.btngo = OBJ

End SELECT

END IF

If Typeof Obj Is NewLabel Then

LBLidName = Split (ctype (obj, newlabel) .id.toString, "_")

SELECT CASE LBLIDNAME (1) .tostring

Case "nowpagelabel"

Me.lblnowpage = OBJ

Case "AllpageLabel"

Me.lblalpage = OBJ

Case "Allitemslabel"

Me.lbLallItems = OBJ

Case "Pagelabel"

Me.lblpage = OBJ

End SELECT

END IF

End Sub

Private sub btnfirst_click (Byval e as system.eventargs) Handles btnfirst.click

Mybase.ensurechildControls ()

If not page.FindControl (DataGrid) Is Nothing Then

Ctype (page.FindControl (DataGrid), DataGrid) .currentpageIndex = 0

TXTPAGE.TEXT = "" "

Raiseevent PageIndexchange (ME, E)

Call newPageDatabaseD ()

Else

Throw New Exception (DataGrid & "し し 当 当 当 当")

END IF

End Sub

Private sub btnlast_click (Byval e as system.eventargs) Handles btnlast.click

DIM PageCount as integer

Mybase.ensurechildControls ()

If not page.FindControl (DataGrid) Is Nothing Then

PageCount = ctype (page.FindControl (DataGrid), DataGrid) .pagecount

Ctype (page.FindControl (DataGrid), DataGrid) .CurrentPageIndex = _Math.max (PageCount - 1, 0)

TXTPAGE.TEXT = "" "

Raiseevent PageIndexchange (ME, E)

Call newPageDatabaseD ()

Else

Throw New Exception (DataGrid & "し し 当 当 当 当")

END IF

End Sub

Private sub btnnext_click (Byval e as system.eventargs) Handles btnnext.click

DIM CurrentPageIndex as in Integer

DIM PageCount as integer

Mybase.ensurechildControls ()

If not page.FindControl (DataGrid) Is Nothing Then

PageCount = ctype (page.FindControl (DataGrid), DataGrid) .pagecount

CurrentPageIndex = ctype (page.FindControl (DataGrid), DataGrid) .CurrentPageIndex

Ctype (page.FindControl (DataGrid), DataGrid) .CurrentPageIndex = _

Math.min (CurrentPageIndex 1, PageCount - 1)

TXTPAGE.TEXT = "" "

Raiseevent PageIndexchange (ME, E)

Call newPageDatabaseD ()

Else

Throw New Exception (DataGrid & "し し 当 当 当 当")

END IF

End Sub

Private sub btnprevious_click (Byval e as system.eventargs) Handles btnprevious.click

DIM CurrentPageIndex as in Integer

Mybase.ensurechildControls ()

If not page.FindControl (DataGrid) Is Nothing Then

CurrentPageIndex = ctype (page.FindControl (DataGrid), DataGrid) .CurrentPageIndex

Ctype (page.FindControl (DataGrid), DataGrid) .CurrentPageIndex = _

Math.max (CurrentPageIndex - 1, 0)

TXTPAGE.TEXT = "" "

Raiseevent PageIndexchange (ME, E)

Call newPageDatabaseD ()

Else

Throw New Exception (DataGrid & "し し 当 当 当 当")

END IF

End Sub

Public Sub NewPageDataBind ()

Dim Recordcount As Integer

DIM PageCount as integer

DIM PagedGDsize As INTEGER

DIM CurrentPageIndex as in Integer

CurrentPageIndex = ctype (page.FindControl (DataGrid), DataGrid) .CurrentPageIndexPagedGDsize = ctype (Page.FindControl (DataGrid), DataGrid) .pageSize

PageCount = ctype (page.FindControl (DataGrid), DataGrid) .pagecount

IF (ctype (page.findcontrol (datagrid), datagrid) .datasource is nothingin

SetButtonState (0, CurrentPageIndex)

EXIT SUB

END IF

IF (ctype (page.findcontrol), DataGrid) .DataSource.gettype (). Tostring (). _

TOLOWER () = "system.data.dataable") THEN

Recordcount = ctype (page.FindControl (DataGrid), DataGrid) .datasource.Rows.count

Elseif (CType (PagePe). DataSource.getType (). Tostring (). _

TOLOWER () = "system.data.dataview") THEN

Recordcount = ctype (page.FindControl (DataGrid), DataGrid) .DataSource.count

Elseif (CType (PagePe). DataSource.getType (). Tostring (). _

TOLOWER () = "system.data.dataset") THEN

Recordcount = ctype (page.FindControl (DataGrid), DataGrid) .DataSource.tables (0). _

Rows.count

END IF

IF PageCount.toString = 0 THEN

LBLNOWPAGE.TEXT = 0

Else

LBLNOWPAGE.TEXT = _

(Ctype (page.findcontrol (datagrid), DataGrid) .CurrentPageIndex 1) .tostring ()

END IF

LBLallPage.Text = "/" & pagecount.tostring () & "page"

LBLALLITEMS.TEXT = "全::" & RecordCount.toString () & "Pie"

SetButtonState (PageCount, CurrentPageIndex)

End Sub

Public Sub setButtonState (Byval CurrentPageIndex as integer): PUBLIC SUNT AS INTEGER

btnfirst.enabled = (0

Btnprevious.enabled = (0

Btnnext.enabled = (CurrentPageIndex

Btnlast.enabled = (CurrentPageIndex

TXTPAGE.ENABLED = (1

End Sub

Private sub btngo_click (Byval e as system.eventargs) Handles btngo.click

DIM PageCount as integer

If not page.FindControl (DataGrid) Is Nothing Then

PageCount = ctype (page.FindControl (DataGrid), DataGrid) .pagecount

Else

Throw New Exception (DataGrid & "し し 当 当 当 当")

EXIT SUB

END IF

IF txtpage.text.to TXTPAGE.TEXT.TOString.Equals ("") THEN

EXIT SUB

Else

IF PageCount

TXTPAGE.TEXT = "" "

EXIT SUB

Else

IF Math.min (PageCount - 1, CINT (TXTPAGE.TEXT) - 1) <0 THEN

TXTPAGE.TEXT = "" "

EXIT SUB

END IF

Ctype (page.FindControl (DataGrid), DataGrid) .CurrentPageIndex = _

Math.min (PageCount - 1, CINT (TXTPAGE.TEXT) - 1)

TXTPAGE.TEXT = "" "

Raiseevent PageIndexchange (ME, E)

Call newPageDatabaseD ()

END IF

END IF

End Sub

PRIVATE SUB CHANGEPAGE_LOAD (Byval e as system.eventargs) Handles mybase.load

Mybase.ensurechildControls ()

IF dataGrid is nothing then

Throw new Exception ("necessary DataGrid プ パティ が が れ い い")

EXIT SUB

END IF

If not page.FindControl (DataGrid) Is Nothing Then

Call newPageDatabaseD ()

Else

Throw New Exception (DataGrid & "し し 当 当 当 当")

END IF

End Sub

END CLASS

Imports system.componentmodel

Imports System.Web.ui

Public Class ChangePageBuilder

Inherits Controlbuilder

Public overrides function getchildControlType (Byval Tagname As String, Byval Attributes As Idictionary) AS TYPE

If Tagname.tolower (). Endswith ("NewTextBox") THEN

Return GetType (NewTextBox)

END IF

IF tagname.tolower (). Endswith ("newbutton") Thenreturn GetType (NewButton)

END IF

If tagname.tolower (). Endswith ("NewLabel") THEN

Return GetType (NewLabel)

END IF

Return Nothing

END FUNCTION

END CLASS

Imports system.io

Imports System.Web.ui

Imports System.Web.ui.WebControls

Imports system.web.ui.design

Imports system.componentmodel

Imports system.componentmodel.design

Public Class ChangePageDesigner

Inherits ControlDesigner

Public overrides function getdesigntimehtml () AS STRING

DIM STRWRITER AS STRINGWRITER DIM HTMLWRITER AS HTMLTEXTWRITER DIM Control As ChangePage

Strwriter = New StringWriter

HTMLWRITER = New HTMLTextWriter (Strwriter)

Control = ctype (me.component, changepage)

Mybase.getdesigntimehtml ()

IF not control.hascontrols kil

Return getemptyDesigntimehtml ()

END IF

Control.renderControl (HTMLWRITER)

Return strwriter.tostring

END FUNCTION

Public overrides function getPersistinnerHtml () AS STRING

DIM STRWRITER AS STRINGWRITER DIM HTMLWRITER AS HTMLTEXTWRITER DIM Control As ChangePage

Strwriter = New StringWriter

HTMLWRITER = New HTMLTextWriter (Strwriter)

Control = ctype (me.component, changepage)

Mybase.getpersistinnerhtml ()

HTMLWRITER.WRITE (ControlPersister.PersistControl (control.firstpagebutton))

HTMLWRITER.WRITE (ControlPersister.PersistControl (Control.PrepageButton))

HTMLWRITER.WRITE (ControlPersister.PersistControl (Control.NextPageButton))

HTMLWRITER.WRITE (ControlPersister.PersistControl (control.lastpagebutton))

HTMLWRITER.WRITE (ControlPersister.PersistControl (Control.PageTextBox))

HTMLWRITER.WRITE (ControlPersister.PersistControl (control.pagelabel))

HTMLWRITER.WRITE (Control.ChangePageButton) HTMLWRITER.WRITE (ControlPERSISTER.PERSISTCONTROL (Control.NowPageLabel)

HTMLWRITER.WRITE (ControlPersister.PersistControl (Control.allpageLabel))

HTMLWRITER.WRITE (ControlPersister.PersistControl (Control.allItemslabel))

Return strwriter.tostring

END FUNCTION

END CLASS

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