ADO初學(xué)者教程：ADO 更新記錄_ASP教程

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推薦：ADO初學(xué)者教程： ADO 刪除記錄
我們可使用SQL的DELETE命令來刪除數(shù)據(jù)庫表中的某條記錄。刪除表中的記錄我們希望刪除Northwind數(shù)據(jù)庫的Customers表中的一條記錄。首先我們需要?jiǎng)?chuàng)建一個(gè)表格，來列出Customers中的所有記錄。 htmlbody%set conn=Server.CreateObject(ADODB.Connection)con

我們可使用SQL的UPDATE來更新數(shù)據(jù)庫表中的某條記錄。

更新數(shù)據(jù)庫表中的記錄

我們希望更新Northwind數(shù)據(jù)中Customers表的某條記錄。首先我們需要?jiǎng)?chuàng)建一個(gè)表格，來列出Customers中的所有記錄。

<html>
<body>
<%
set conn=Server.CreateObject("ADODB.Connection")
conn.Provider="Microsoft.Jet.OLEDB.4.0"
conn.Open "c:/webdata/northwind.mdb"
set rs=Server.CreateObject("ADODB.Recordset")
rs.open "SELECT * FROM customers",conn
%>
<h2>List Database</h2>
<table border="1" width="100%">
<tr>
<%
for each x in rs.Fields
  response.write("<th>" & ucase(x.name) & "</th>")
next
%>
</tr>
<% do until rs.EOF %>
<tr>
<form method="post" action="demo_update.asp">
<%
for each x in rs.Fields
  if lcase(x.name)="customerid" then%>
    <td>
    <input type="submit" name="customerID" value="<%=x.value%>">
    </td>
  <%else%>
    <td><%Response.Write(x.value)%></td>
  <%end if
next
%>
</form>
<%rs.MoveNext%>
</tr>
<%
loop
conn.close
%>
</table>
</body>
</html>

如果用戶點(diǎn)擊"customerID"列中的按鈕，會(huì)打開一個(gè)新文件"demo_update.asp"。此文件包含了創(chuàng)建輸入域的源代碼，這些輸入域基于數(shù)據(jù)庫中記錄的字段，同時(shí)也含有一個(gè)保存修改的“更新按鈕”：

<html>
<body>
<h2>Update Record</h2>
<%
set conn=Server.CreateObject("ADODB.Connection")
conn.Provider="Microsoft.Jet.OLEDB.4.0"
conn.Open "c:/webdata/northwind.mdb"
cid=Request.Form("customerID")
if Request.form("companyname")="" then
  set rs=Server.CreateObject("ADODB.Recordset")
  rs.open "SELECT * FROM customers WHERE customerID='" & cid & "'",conn
  %>
  <form method="post" action="demo_update.asp">
  <table>
  <%for each x in rs.Fields%>
  <tr>
  <td><%=x.name%></td>
  <td><input name="<%=x.name%>" value="<%=x.value%>"></td>
  <%next%>
  </tr>
  </table>
  <br /><br />
  <input type="submit" value="Update record">
  </form>
<%
else
  sql="UPDATE customers SET "
  sql=sql & "companyname='" & Request.Form("companyname") & "',"
  sql=sql & "contactname='" & Request.Form("contactname") & "',"
  sql=sql & "address='" & Request.Form("address") & "',"
  sql=sql & "city='" & Request.Form("city") & "',"
  sql=sql & "postalcode='" & Request.Form("postalcode") & "',"
  sql=sql & "country='" & Request.Form("country") & "'"
  sql=sql & " WHERE customerID='" & cid & "'"
  on error resume next
  conn.Execute sql
  if err<>0 then
    response.write("No update permissions!")
  else 
    response.write("Record " & cid & " was updated!")
  end if 
end if
conn.close
%>
</body>
</html>

分享：ASP在線問答的實(shí)例代碼
首先，是HTML文件，為Test.asp，代碼如下：%@LANGUAGE=VBSCRIPT CODEPAGE=936% % if session(username)= then Response.Write(scriptalert('請(qǐng)登陸后在進(jìn)行操作！');window.location='login.asp?reURL=Test.asp';/script) Response.End() end if %