数据控件+PagedDataSource完成分页

最新推荐文章于 2022-05-17 15:59:09 发布

最新推荐文章于 2022-05-17 15:59:09 发布 · 173 阅读

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本文介绍如何使用ASP.NET中的Repeater控件结合PagedDataSource实现数据分页功能，包括页面显示逻辑与后台代码实现过程。

前台:


    <asp:Repeater ID="Repeater1" runat="server">...</asp:Repeater>
    <asp:Label ID="Label1" runat="server" Text="当前页"></asp:Label>
    <asp:Label ID="Label2" runat="server" Text="1"></asp:Label> <!--用来显示当前页码-->
    <asp:Label ID="Label3" runat="server" Text="总页数"></asp:Label>
    <asp:Label ID="Label4" runat="server" Text=""></asp:Label>  <!--用来显示总页数-->
    <asp:Button ID="BtnFirst" runat="server" Text="首页" onclick="BtnFirst_Click" /> 
    <asp:Button ID="BtnPrevious" runat="server" Text="上一页" onclick="BtnPrevious_Click" />
    <asp:Button ID="BtnNext" runat="server" Text="下一页" onclick="BtnNext_Click" />
    <asp:Button ID="BtnLast" runat="server" Text="末页" onclick="BtnLast_Click" />

后台:


    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            this.Label2.Text = "1";
            DataListDataBind();
        }        
    }
    protected DataTable GetData()
    {
	...//获取数据方法
    }
    protected void MyDataBind()  //主要方法
    {
        PagedDataSource pds = new PagedDataSource();
        pds.DataSource = GetData().DefaultView;
        pds.AllowPaging = true;
        pds.PageSize = 10;
        pds.CurrentPageIndex = Convert.ToInt32(this.Label2.Text) - 1;
        this.Repeater1.DataSource = pds;
        this.Label2.Text = (pds.CurrentPageIndex + 1).ToString();
        this.Label4.Text = pds.PageCount.ToString();
        this.BtnFirst.Enabled = true;
        this.BtnPrevious.Enabled = true;
        this.BtnNext.Enabled = true;
        this.BtnLast.Enabled = true;
        if (pds.CurrentPageIndex<1)
        {
            this.BtnFirst.Enabled = false;
            this.BtnPrevious.Enabled = false;
            this.BtnNext.Enabled = true;
            this.BtnLast.Enabled = true;
        }
        if (pds.CurrentPageIndex==pds.PageCount-1)
        {
            this.BtnFirst.Enabled = true;
            this.BtnPrevious.Enabled = true;
            this.BtnNext.Enabled = false;
            this.BtnLast.Enabled = false;
        }
        this.Repeater1.DataBind();
    }
    protected void BtnFirst_Click(object sender, EventArgs e)  //首页事件
    {
        this.Label2.Text = "1";
        DataListDataBind();
    }
    protected void BtnPrevious_Click(object sender, EventArgs e) //上一页事件
    {
        this.Label2.Text = (Convert.ToInt32(this.Label2.Text) - 1).ToString();
        DataListDataBind();
    }
    protected void BtnNext_Click(object sender, EventArgs e)  //下一页事件
    {
        this.Label2.Text = (Convert.ToInt32(this.Label2.Text) + 1).ToString();
        DataListDataBind();
    }
    protected void BtnLast_Click(object sender, EventArgs e)  //末页事件
    {
        this.Label2.Text = this.Label4.Text;
        DataListDataBind();
    }