Home > Developer > .Net Core

A simple message book program developed using DataList control components

Source: Internet
Author: User
Developer on Alibaba Coud: Build your first app with APIs, SDKs, and tutorials on the Alibaba Cloud. Read more ＞

<% @ Import Namespace = "System. Data" %>
<% @ Import Namespace = "System. Data. ADO" %>
<Html>
<Body BgColor = "White">
<H3> DataList control element <HR> </H3>
<Div id = Message runat = server> </div>
<Form runat = "server">
<Table cellspacing = 0 cellpadding = 0 width = "776" border = 0>
<Tr>
<Td width = "2%"> </td>
<Td width = "98%" bgcolor = #333333 align = "center"> <font face = color = # ffffcc> <B> message book </B> </font> </td>
</Tr>
</Table>
<Asp: DataList id = "DataList1" runat = "server"
Border = "1" BorderColor = "Black"
CellPadding = "2" CellSpacing = "0"
HeaderStyle-BackColor = "#888888"
ItemStyle-BackColor = "# eeeeee"
SelectedItemStyle-BackColor = "# ffffff"
HeaderTemplate-ColSpan = "3"
OnItemCommand = "DataList_ItemCommand"
Width = "776">

<! -- Id template -->
<Template name = "HeaderTemplate">
<Asp: LinkButton id = "Tosay" runat = "server" Text = "I want to speak" ForeColor = "# ffffff"/>
<A href = "temp. aspx"> <font color = "# ffffff"> refresh the page </font> </a>
<Asp: LinkButton id = "Mange" runat = "server" Text = "manage messages" ForeColor = "# ffffff"/>
</Template>


<! -- Content template -->
<Template name = "ItemTemplate">
<% # Container. DataItem ("book_id") %>
<% # Container. DataItem ("content") %>
<Asp: LinkButton id = "Detail" runat = "server" Text = "View Details" ForeColor = "#333333"/>
</Template>

<! -- View the message template -->
<Template name = "SelectedItemTemplate">
No.: <% # Container. DataItem ("book_id") %> <BR>
Spokesman: <% # Container. DataItem ("username") %> <BR>
Time: <% # Container. DataItem ("post_time") %> <BR>
Content: <% # Container. DataItem ("content") %> <BR>
<Div align = "right"> <asp: LinkButton id = "Title" runat = "server" Text = "Disable" ForeColor = "#333333"/> </div>
</Template>

</Asp: DataList>
<Table id = "foot" cellspacing = 0 cellpadding = 0 width = "776" border = 0 runat = "server" visible = "false">
<Tr>
& Lt; td bgcolor = #000000 & gt;
<Table cellspacing = 1 cellpadding = 3 width = "100%" border = 0>
<Tr bgcolor = # ffffff>
<Td> name: <Input Type = "Text" id = "Username" Size = 20 runat = "server"/> <br>
Message: <Input Type = "Text" id = "Content" Size = 20 runat = "server"/>
<Asp: LinkButton id = "save" runat = "server" Text = "save" OnClick = "linkbutton#click" AutoPostBack/> <br>
<Asp: LinkButton id = "close" runat = "server" Text = "close" OnClick = "LinkButton2_Click"/> </td>
</Tr>
</Table>
</Td>
</Tr>
</Table>

<Table cellspacing = 0 cellpadding = 0 width = "776" border = 0>
<Tr>
<Td width = "98%" bgcolor = #333333 align = "center"> <font face = color = # ffffcc> <B> message book </B> </font> </td>
<Td width = "2%"> </td>
</Tr>
</Table>


</Form>
<Hr>

<Asp: Label id = "Label1" runat = "server"/>
</Body>
</Html>

<Script Language = "VB" runat = "server">

Sub Page_Load (sender As Object, e As EventArgs)
DataList1.DataSource = CreateDataView ("data. mdb", "guestbook ")
DataList1.DataBind ()
End Sub

Function CreateDataView (Db As String, Table As String) As DataView
Dim Provider, ConnStr, SQL As String
Provider = "Microsoft. Jet. OLEDB.4.0 ;"
ConnStr = "Provider =" & Provider &_
"Data Source =" & Server. MapPath (Db)
Dim Cmd As ADODataSetCommand
Cmd = New ADODataSetCommand ("Select * from" & Table & "Order By post_time DESC", ConnStr)
Dim ds As DataSet = new DataSet ()
Cmd. FillDataSet (ds, Table)
CreateDataView = new DataView (ds. Tables (Table ))
End Function

Sub DataList_ItemCommand (sender As Object, e As DataListCommandEventArgs)
Select case e. CommandSource. Text
Case "I want to speak"
Foot. Visible = true

Case "manage messages"

Case "View Details"
DataList1.SelectedIndex = e. Item. ItemIndex
Case "close"
DataList1.SelectedIndex =-1
End select
DataList1.DataSource = CreateDataView ("data. mdb", "guestbook ")
DataList1.DataBind ()
End Sub
Sub LinkButton2_Click (sender As Object, e As EventArgs)
Foot. Visible = false
End Sub

Sub linkbutton#click (sender As Object, e As EventArgs)
Dim ConnStr, SQL As String
SQL = "Insert Into GuestBook (userName, post_time, content) Values (" & Username. Value & "," & DateTime. Now & "," & Content. Value &")"
ConnStr = "Provider = Microsoft. Jet. OLEDB.4.0 ;"&_
"Data Source =" & Server. MapPath ("data. mdb ")
Dim Cmd As ADOCommand = New ADOCommand (SQL, ConnStr)
Cmd. ActiveConnection. Open ()
Cmd. Execute ()
Message. InnerHtml = "<B> Message successful! </B>"
Foot. Visible = false
Page. Navigate ("temp. aspx ")
End Sub
</Script>

After studying for a long time, we can see the last sentence Page. navigate ("temp. aspx ") still cannot achieve the timely refresh effect: (see section C # In the essence area, which receives the REQUEST in the PAGE_LOAD event. after the FORM object is inserted, the DATESET is updated immediately. I don't know how to fix this...


This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Related Keywords:
simple c program using switch case simple java program using switch case control message create simple address book in php using mysql database electronic components book comptia a book 2016 best comptia a book
Related Article
asp.net Core Data protection (the data Protection cluster sce...
asp.net core-authorize characteristics
Micro-service Monitoring zipkin+asp.net core
Combine ASP NET Core and SQL Server with Docker Compose
ASP. net mvc creates 404 jump instances (not 302 and 200), mv...
Comparison between Orchard and ABP architectures (aspnetboile...

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

What's Trending
Top 10 Tags
datastax versions naming convention zookeeper client class definition md5 microsoft sql server 2005 data structures exception handling error handling
Top 10 Keywords
microsoft download center down wordpress address url site address url wordpress address url windows installer 4 0 download 302 not found web address url definition site address url wordpress db2 integer mac os installation step by step pdf abbreviation for return

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

Get Started for Free

  • Sales Support

    1 on 1 presale consultation

    Chat Contact Sales

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

    Open a Ticket

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.

    Learn More