ASP.NET DataList Control - ItemCommand VS .NET 2003 (FX 1.1) |
ASP.NET DataList Control - ItemCommand (Visual Studio .NET 2003) ตัวอย่างนี้จะเป็นการใช้ ItemCommand ซึ่งเขียนบน Visual Studio .NET 2003 และ Framework 1.1 ในรูปแบบของ Code Behind
Language Code :  VB.NET || C#
Framework : 1.1
DataListItemCommand.aspx
<%@ Page Language="vb" AutoEventWireup="false" Codebehind="DataListItemCommand.aspx.vb" Inherits="MyDotNet.DataListItemCommand"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<title>ThaiCreate.Com ASP.NET - DataList</title>
<meta name="GENERATOR" content="Microsoft Visual Studio .NET 7.1">
<meta name="CODE_LANGUAGE" content="Visual Basic .NET 7.1">
<meta name="vs_defaultClientScript" content="JavaScript">
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server" enctype="multipart/form-data">
<asp:DataList id="myDataList" runat="server" RepeatColumns="2" cellpadding="2" cellspacing="2"
borderstyle="inset">
<HeaderTemplate>
<b>My Category</b><br />
</HeaderTemplate>
<ItemTemplate>
<div style="width:100px" align="center">
<asp:Image id="imgPicture" runat="server"></asp:Image>
<br />
<asp:HyperLink id="hplCategory" runat="server"></asp:HyperLink>
<br />
<asp:LinkButton id="lnkEdit" runat="server" CommandName="Edit">Edit</asp:LinkButton>
</div>
</ItemTemplate>
<EditItemTemplate>
<asp:Label id="lblCateID" runat="server" Visible = "False" text='<%#Container.DataItem("CategoryID")%>'>
</asp:Label>
<asp:TextBox id="txtCategory" runat="server" text='<%#Container.DataItem("CategoryName")%>'>
</asp:TextBox><br />
<input id="filPicture" type="file" runat="server" NAME="filPicture"><br />
<asp:LinkButton id="lnkUpdate" runat="server" CommandName="Update">Update</asp:LinkButton>
<asp:LinkButton id="lnkCancel" runat="server" CommandName="Cancel">Cancel</asp:LinkButton>
</EditItemTemplate>
</asp:DataList>
</form>
</body>
</html>
DataListItemCommand.aspx.vb
Imports System.Data
Imports System.Data.OleDb
Public Class DataListItemCommand
Inherits System.Web.UI.Page
Dim objConn As OleDbConnection
Dim objCmd As OleDbCommand
Dim strSQL As String
#Region " Web Form Designer Generated Code "
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
End Sub
Private designerPlaceholderDeclaration As System.Object
Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Init
InitializeComponent()
End Sub
#End Region
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim strConnString As String
strConnString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & Server.MapPath("database/mydatabase.mdb") & ";"
objConn = New OleDbConnection(strConnString)
objConn.Open()
If Not Page.IsPostBack() Then
BindData()
End If
End Sub
Protected Sub BindData()
strSQL = "SELECT * FROM category"
Dim dtReader As OleDbDataReader
objCmd = New OleDbCommand(strSQL, objConn)
dtReader = objCmd.ExecuteReader()
'*** BindData to DataList ***'
myDataList.DataSource = dtReader
myDataList.DataBind()
dtReader.Close()
dtReader = Nothing
End Sub
Private Sub Page_Unload(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Unload
objConn.Close()
objConn = Nothing
End Sub
Private Sub myDataList_CancelCommand(ByVal source As Object, ByVal e As DataListCommandEventArgs) Handles myDataList.CancelCommand
myDataList.EditItemIndex = -1
BindData()
End Sub
Private Sub myDataList_EditCommand(ByVal source As Object, ByVal e As DataListCommandEventArgs) Handles myDataList.EditCommand
myDataList.EditItemIndex = e.Item.ItemIndex
BindData()
End Sub
Private Sub myDataList_UpdateCommand(ByVal source As Object, ByVal e As DataListCommandEventArgs) Handles myDataList.UpdateCommand
'*** CategoryID ***'
Dim lblCateID As Label = CType(e.Item.FindControl("lblCateID"), Label)
'*** txtCategory ***'
Dim txtCategory As TextBox = CType(e.Item.FindControl("txtCategory"), TextBox)
strSQL = "UPDATE category SET CategoryName = '" & txtCategory.Text & "' " & _
" WHERE CategoryID = " & lblCateID.Text & " "
objCmd = New OleDbCommand(strSQL, objConn)
objCmd.ExecuteNonQuery()
'*** If Select File Upload ***'
Dim filPicture As HtmlInputFile = CType(e.Item.FindControl("filPicture"), HtmlInputFile)
Dim strFileName As String
If Trim(filPicture.PostedFile.FileName) <> "" Then
strFileName = System.IO.Path.GetFileName(filPicture.Value)
filPicture.PostedFile.SaveAs(Server.MapPath("images/" & strFileName))
strSQL = "UPDATE category SET Picture = 'images/" & strFileName & "' " & _
" WHERE CategoryID = " & lblCateID.Text & " "
objCmd = New OleDbCommand(strSQL, objConn)
objCmd.ExecuteNonQuery()
End If
myDataList.EditItemIndex = -1
BindData()
End Sub
Private Sub myDataList_ItemDataBound(ByVal sender As Object, ByVal e As DataListItemEventArgs) Handles myDataList.ItemDataBound
'*** Image ***'
Dim img As System.Web.UI.WebControls.Image = CType(e.Item.FindControl("imgPicture"), System.Web.UI.WebControls.Image)
If Not IsNothing(img) Then
img.ImageUrl = e.Item.DataItem("Picture")
'img.Attributes.Add("OnClick","window.location='https://www.thaicreate.com?CateID="&e.Item.DataItem("CategoryID")&"'")
'img.Style.Add("cursor","hand")
End If
'*** HyperLink ***'
Dim hplCate As HyperLink = CType(e.Item.FindControl("hplCategory"), HyperLink)
If Not IsNothing(hplCate) Then
hplCate.Text = e.Item.DataItem("CategoryName")
hplCate.ToolTip = e.Item.DataItem("CategoryName")
hplCate.NavigateUrl = "https://www.thaicreate.com?CateID=" & e.Item.DataItem("CategoryID")
End If
End Sub
End Class
Screenshot
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 ช่วยกันสนับสนุนรักษาเว็บไซต์ความรู้แห่งนี้ไว้ด้วยการสนับสนุน Source Code 2.0 ของทีมงานไทยครีเอท
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ThaiCreate.Com Team (บทความเป็นลิขสิทธิ์ของเว็บไทยครีเอทห้ามนำเผยแพร่ ณ เว็บไซต์อื่น ๆ) |
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2008-11-15 07:08:09 /
2017-03-28 21:29:09 |
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