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Need to create a full server custom control that is able to do paging

Posted on 2007-11-20
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Last Modified: 2013-11-07
Hi, I am totally new to this stuff, and I would like to know how to create a full custom web server control that allows me to do paging (set number of lines per page, get number of all pages, and to know the current page I am at)

The content that would be display would come from a array(list).

Any idea on doing that? I only know how to do the REALLY basic stuffs and I have no idea where to start.
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Question by:Sharalynn
2 Comments
 
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needo_jee earned 500 total points
ID: 20325563
here is full paging contol with complete details and working example
This one seems neat as its generic can be used with any control
http://www.codeproject.com/aspnet/paginguc.asp

for reference here are other examples with samples..
http://www.freevbcode.com/ShowCode.asp?ID=5574
http://www.15seconds.com/issue/030812.htm

thanks
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Author Comment

by:Sharalynn
ID: 20325981
The articles don't really code them inside the web control itself.

See attached code snippet. Am I in the correct direction? How should I continue?

Also, I need to raise the PageChange event whenever the next/prev buttons are clicked, so that it can provide information on the line count of the last sentence on the current page with the e parameter.

Imports System

Imports System.Collections.Generic

Imports System.ComponentModel

Imports System.Text

Imports System.Web

Imports System.Web.UI

Imports System.Web.UI.WebControls

Imports System.Drawing
 

<DefaultProperty("Text"), ToolboxData("<{0}:PageListBox1 runat=server></{0}:PageListBox1>")> _

Public Class PagedListBox

    Inherits WebControl

    Implements IPostBackEventHandler
 

    Private mLinesPerPage As Short

    Private mNumberOfPages As Short

    Private mCurrentPage As Short

    Private mStoreArray As Array
 

    Public Event PageChange()
 

    Public Property LinesPerPage() As Short

        Get

            Return mLinesPerPage

        End Get

        Set(ByVal value As Short)

            mLinesPerPage = value

        End Set

    End Property
 

    Public Property NumberOfPages() As Short

        Get

            Return mNumberOfPages

        End Get

        Set(ByVal value As Short)

            mNumberOfPages = value

        End Set

    End Property
 

    Public Property CurrentPage() As Short

        Get

            Return mCurrentPage

        End Get

        Set(ByVal value As Short)

            mCurrentPage = value

        End Set

    End Property
 

    Public Property StoreArray() As Array

        Get

            Return mStoreArray

        End Get

        Set(ByVal value As Array)

            mStoreArray = value

        End Set

    End Property
 

    '<Bindable(True), Category("Appearance"), DefaultValue(""), Localizable(True)> Property Text() As String

    '    Get

    '        Dim s As String = CStr(ViewState("Text"))

    '        If s Is Nothing Then

    '            Return String.Empty

    '        Else

    '            Return s

    '        End If

    '    End Get
 

    '    Set(ByVal Value As String)

    '        ViewState("Text") = Value

    '    End Set

    'End Property
 

    '<Bindable(True), Browsable(True)> _

    'Public Property DataSource() As IEnumerable

    '    Get

    '        Return _datasource

    '    End Get

    '    Set(ByVal value As IEnumerable)

    '        _datasource = value

    '    End Set

    'End Property
 

    'Private Sub CreateArrayList()

    '    Dim dataSource As IEnumerable = Nothing

    '    Try

    '        dataSource = Me._datasource

    '    Catch ex As Exception
 

    '    End Try
 

    '    If Not (dataSource Is Nothing) Then

    '        Dim dataObject As Object
 

    '        For Each dataObject In dataSource

    '            datalist.Add(dataObject)

    '        Next

    '        datalist.TrimToSize()

    '    End If

    'End Sub
 

    'Protected Overrides Sub DataBind(ByVal raiseOnDataBinding As Boolean)

    '    MyBase.DataBind(raiseOnDataBinding)

    '    MyBase.OnDataBinding(EventArgs.Empty)
 

    '    Controls.Clear()

    '    If HasChildViewState() Then

    '        ClearChildViewState()

    '    End If
 

    '    ChildControlsCreated = True
 

    '    If Not IsTrackingViewState() Then

    '        TrackViewState()

    '    End If
 

    '    CreateArrayList()

    'End Sub
 

    Protected Overrides Sub RenderContents(ByVal output As HtmlTextWriter)

        output.AddAttribute(HtmlTextWriterAttribute.Cellpadding, "0")

        output.AddAttribute(HtmlTextWriterAttribute.Cellspacing, "0")

        output.AddAttribute(HtmlTextWriterAttribute.Border, "1")

        output.AddAttribute(HtmlTextWriterAttribute.Width, "50%")

        output.AddStyleAttribute(HtmlTextWriterStyle.BorderColor, Color.Red.Name)
 

        output.AddAttribute(HtmlTextWriterAttribute.Cellpadding, "1", False)

        output.RenderBeginTag(HtmlTextWriterTag.Table)

        output.RenderBeginTag(HtmlTextWriterTag.Tr)

        output.RenderBeginTag(HtmlTextWriterTag.Td)

        output.RenderBeginTag(HtmlTextWriterTag.Button)

        output.Write("Next")

        output.RenderEndTag()

        output.RenderBeginTag(HtmlTextWriterTag.Td)

        output.Write("&nbsp;&nbsp;&nbsp;&nbsp;")

        output.RenderEndTag()

        output.RenderBeginTag(HtmlTextWriterTag.Td)

        output.RenderBeginTag(HtmlTextWriterTag.Button)

        output.Write("Previous")

        output.RenderEndTag()

        output.RenderEndTag()

        Dim i As Short

        For i = 0 To StoreArray.Length - 1

            output.RenderBeginTag(HtmlTextWriterTag.Tr)

            output.RenderBeginTag(HtmlTextWriterTag.Td)

            output.Write(StoreArray(i))

            output.RenderEndTag()

            output.RenderEndTag()

        Next

        output.RenderEndTag()

    End Sub
 

    Public Sub RaisePostBackEvent(ByVal eventArgument As String) Implements System.Web.UI.IPostBackEventHandler.RaisePostBackEvent
 

    End Sub

End Class

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