DataList控件Button事件

DataList控件，每笔记录会放置一个Button，让用户Click这个Button，将会获取这笔记录相关信息。下面这个例子演示是怎样获取记录的主键。

.aspx，你需要为Datalist写OnItemCreated事件和定义DataKwyField这样才可以定义记录铵钮事件与取得记录的主键值。

 <asp:ScriptManager ID="ScriptManager1" runat="server">
        </asp:ScriptManager>
        <asp:UpdatePanel ID="UpdatePanel1" runat="server">
            <ContentTemplate>
                <asp:DataList ID="DataList1" runat="server" DataKeyField="GalleryId" 
                    OnItemCreated="DataList1_ItemCreated">                   
                    <ItemTemplate>
                        <asp:Button ID="Button1" runat="server" Text="Button" />
                    </ItemTemplate>
                </asp:DataList>
            </ContentTemplate>
        </asp:UpdatePanel>

.aspx.cs:

 protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            Data_Binding();
        }
    }

    private void Data_Binding()
    {
        this.DataList1.DataSource = xxx;
        this.DataList1.DataBind();
    }

    protected void DataList1_ItemCreated(object sender, DataListItemEventArgs e)
    {
        if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
        {
            //判断Button是否存在
            if (e.Item.FindControl("Button1") != null)
            {
                //如果存在，把对象转换为Button。
                Button InsusButton = (Button)e.Item.FindControl("Button1");
                //产生Button Click事件
                InsusButton.Click += new EventHandler(InsusButton_Click);
            }
        }
    }

    private void InsusButton_Click(object sender, EventArgs e)
    {
        Button button = (Button)sender;
        DataListItem dli = (DataListItem)button.Parent;
        string pk = this.DataList1.DataKeys[dli.ItemIndex].ToString();
       //下面Utility请从Insus.NET博客下载
        (new InsusJsUtility()).JsAlert(pk);
    }