ASP.NET控件Repeater遍历

该例子实现在Repeater通过勾选CheckBox后，通过底部按钮获取到所选的所有数据（之后可以进行批量删除、更新等操作）

首先，定义一个类

public class UserInfo
{
    public int ID { get; set; }

    public string name { get; set; }
}

在页面上编写Repeater模板

<asp:Repeater ID="Repeater1" runat="server">
    <HeaderTemplate>
        <table style="width: 100%;">
            <tr>
                <td>
                    ID
                </td>
                <td>
                    名称
                </td>
                <td>
                    操作
                </td>
            </tr>
    </HeaderTemplate>
    <ItemTemplate>
        <tr>
            <td>
                <%#Eval("ID")%>
            </td>
            <td>
                <%#Eval("name")%>
            </td>
            <td>
                <asp:CheckBox ID="CheckBox1" runat="server" dataID='<%#Eval("ID")%>' />操作
            </td>
        </tr>
    </ItemTemplate>
    <FooterTemplate>
        </table>
    </FooterTemplate>
</asp:Repeater>

数据初始化

        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                List<UserInfo> userList = new List<UserInfo>();
                for (int i = 0; i < 10; i++)
                {
                    UserInfo user = new UserInfo();
                    user.ID = i;
                    user.name = "BDS";
                    userList.Add(user);
                }
                Repeater1.DataSource = userList;
                Repeater1.DataBind();
            }
        }

页面添加一个遍历操作的按钮

asp:Button ID="Button1" runat="server" Text="遍历Repeater" onclick="Button1_Click" />

遍历操作代码

protected void Button1_Click(object sender, EventArgs e)
{
    List<int> idList = new List<int>();
    foreach (RepeaterItem item in Repeater1.Items)
    {
        CheckBox cb = item.FindControl("CheckBox1") as CheckBox;
        if (cb.Checked)
        {
            int id = int.Parse(cb.Attributes["dataID"]);
            idList.Add(id);
        }

    }

    foreach (var item in idList)
    {
        Response.Write(item + ",");
    }
}