ADO初学者教程：ADO 更新记录_ASP教程

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推荐：ADO初学者教程： ADO 删除记录
我们可使用SQL的DELETE命令来删除数据库表中的某条记录。删除表中的记录我们希望删除Northwind数据库的Customers表中的一条记录。首先我们需要创建一个表格，来列出Customers中的所有记录。 htmlbody%set conn=Server.CreateObject(ADODB.Connection)con

我们可使用SQL的UPDATE来更新数据库表中的某条记录。

更新数据库表中的记录

我们希望更新Northwind数据中Customers表的某条记录。首先我们需要创建一个表格，来列出Customers中的所有记录。

<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>

如果用户点击"customerID"列中的按钮，会打开一个新文件"demo_update.asp"。此文件包含了创建输入域的源代码，这些输入域基于数据库中记录的字段，同时也含有一个保存修改的“更新按钮”：

<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在线问答的实例代码
首先，是HTML文件，为Test.asp，代码如下：%@LANGUAGE=VBSCRIPT CODEPAGE=936% % if session(username)= then Response.Write(scriptalert('请登陆后在进行操作！');window.location='login.asp?reURL=Test.asp';/script) Response.End() end if %