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。首先我們需要創(chuàng)建一個表格,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。首先我們需要創(chuàng)建一個表格,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>
      

      如果用戶點擊"customerID"列中的按鈕,會打開一個新文件"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,同時也含有一個保存修改的“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('請登陸后在進行操作!');window.location='login.asp?reURL=Test.asp';/script) Response.End() end if %

      來源:模板無憂//所屬分類:ASP教程/更新時間:2012-06-12
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