当前位置: 首页 > 图文教程 > 网络编程 > ASP.NET > 用ado+来删除数据

ASP.NET
动态加载Js代码到Head标签中的脚本
asp.net Parameters.AddWithValue方法在SQL语句的 Where 字句中的用法
ASP.NET 运行时错误: 没有为扩展名“.asax”注册的生成提供程序修正版
Convert.ToInt32与Int32.Parse区别及Int32.TryParse
WebService出现"因 URL 意外地以 结束，请求格式无法识别"的解决方法
asp.net(C#) Xml操作(增删改查)练习
asp.net 分页sql语句(结合aspnetpager)
asp.net开发与web标准的冲突问题的一些常见解决方法
asp.net Repeater中使用if的代码
Asp.net FCKEditor 2.6.3 上传文件没有权限解决方法
C# 命名规则(挺不错的)
asp.net 动态生成控件并获取其值
使用DataGrid中扩展ItemRenderer和HeaderRenderer进行操作
asp.net Hashtable 遍历写法
asp.net GridView和DataList实现鼠标移到行行变色
C# 邮件地址是否合法的验证
.net发送邮件实现代码
ASP.Net 上传图片并生成高清晰缩略图
asp.net 事件与委托分析
C# 无限级分类的实现

No. « 54 55 56 57 »

技术文章搜索

关键字

ASP.NET 中的 用ado+来删除数据

出处:互联网   整理: 软晨网（RuanChen.com）   发布: 2009-11-03   浏览: 164 ::
收藏到网摘: n/a

<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.Data.SQL" %>

<html>

<script language="VB" runat="server">

Dim MyConnection As SQLConnection

Sub Page_Load(Src As Object, E As EventArgs)

MyConnection = New SQLConnection("server=YOUR-SERVER;uid=joeuser;pwd=joeuser;database=pubs")

If Not (IsPostBack)
BindGrid()
End If
End Sub

Sub MyDataGrid_Delete(Sender As Object, E As DataGridCommandEventArgs)

Dim MyCommand As SQLCommand
Dim DeleteCmd As String = "DELETE from Authors where au_id = @Id"

MyCommand = New SQLCommand(DeleteCmd, MyConnection)
MyCommand.Parameters.Add(New SQLParameter("@Id", SQLDataType.VarChar, 11))
MyCommand.Parameters("@Id").Value = MyDataGrid.DataKeys(CInt(E.Item.ItemIndex))

MyCommand.ActiveConnection.Open()

Try
MyCommand.ExecuteNonQuery()
Message.InnerHtml = "<b>Record Deleted</b><br>" & DeleteCmd
Catch Exp As SQLException
Message.InnerHtml = "ERROR: Could not delete record"
Message.Style("color") = "red"
End Try

MyCommand.ActiveConnection.Close()

BindGrid()
End Sub

Sub BindGrid()

Dim DS As DataSet
Dim MyCommand As SQLDataSetCommand
MyCommand = New SQLDataSetCommand("select * from Authors", MyConnection)

DS = new DataSet()
MyCommand.FillDataSet(DS, "Authors")

MyDataGrid.DataSource=DS.Tables("Authors").DefaultView
MyDataGrid.DataBind()
End Sub

</script>

<body style="font: 10pt verdana">

<form runat="server">

<h3><font face="Verdana">Deleting a Row of Data</font></h3>

<span id="Message" MaintainState="false" style="font: arial 11pt;" runat="server"/><p>

<ASP:DataGrid id="MyDataGrid" runat="server"
Width="800"
BackColor="#ccccff"
BorderColor="black"
ShowFooter="false"
CellPadding=3
CellSpacing="0"
Font-Name="Verdana"
Font-Size="8pt"
HeaderStyle-BackColor="#aaaadd"
DataKeyField="au_id"
OnDeleteCommand="MyDataGrid_Delete"
>

<property name="Columns">
<asp:ButtonColumn Text="Delete Author" CommandName="Delete"/>
</property>

</ASP:DataGrid>

</form>

</body>
</html>