一步步打造自己的分页控件1

asp.net数据绑定控件内置了分页功能，但是分页功能有限，样式不好控制，于是想自己开发分页控件

先晒晒图片效果 不要见笑哦

先晒晒前台页面分页代码前台用到的是linkbutton然后触发事件改变页码 绑定到下拉列表控件里面需要知道总页数pagedatasource的属性PageCount

<div id="showTfenye">
    当前页：<asp:Label ID="lblPage" runat="server" Text="1"></asp:Label>&nbsp;&nbsp; 总页数：<asp:Label
        ID="lblBackPage" runat="server" Text=""></asp:Label>&nbsp;&nbsp;
    <asp:LinkButton ID="lbtnOne" runat="server" ForeColor="Red" OnClick="lbtnOne_Click">首页</asp:LinkButton>&nbsp;&nbsp;
    <asp:LinkButton ID="lbtnUp" runat="server" ForeColor="Red" OnClick="lbtnUp_Click">上一页</asp:LinkButton>&nbsp;&nbsp;
    <asp:LinkButton ID="lbtnNext" runat="server" ForeColor="Red" OnClick="lbtnNext_Click">下一页</asp:LinkButton>&nbsp;&nbsp;
    <asp:LinkButton ID="lbtnBack" runat="server" ForeColor="Red" OnClick="lbtnBack_Click">末页</asp:LinkButton>&nbsp;&nbsp;
    <asp:DropDownList ID="DropDownList1" runat="server" Width="40px">
    </asp:DropDownList>
    &nbsp;&nbsp;
    <asp:Button ID="Button1" runat="server" BackColor="#99FFCC" BorderColor="#3333FF"
        BorderWidth="2px" OnClick="Button1_Click" Text="Go" />
</div>

这个分页我是封装在用户控件里面，用pagedatasource作为中间中间数据源，然后传给数据绑定控件比如，GridView

重要的利用pageDataSource的 

ps.DataSource = dt.DefaultView;
        //是否可以分页 
        ps.AllowPaging = true;
        //显示分页的数量 
        ps.PageSize = this.ShowCount;
        //取得当前页的页码 
        ps.CurrentPageIndex = curPage - 1;

 //显示分页数量 
        this.lblBackPage.Text = Convert.ToString(ps.PageCount);

  1 using System;
  2 using System.Data;
  3 using System.Web.UI.WebControls;
  4 namespace Pager.controls
  5 {
  6 public partial class pager1 : System.Web.UI.UserControl
  7 {
  8     protected void Page_Load(object sender, EventArgs e)
  9     {
 10         if (!IsPostBack)
 11         {
 12             bind();
 13             showPage();
 14         }
 15     }
 16     #region 定义相关属性   
 17 
 18     private DataBoundControl dataControl;
 19     public DataBoundControl DataControl
 20     {
 21         get { return this.dataControl; }
 22         set { this.dataControl = value; }
 23     }
 24     #region 其他数据源控件   
 25    
 26     //private BaseDataBoundControl dataControl;//数据源控件类型  
 27     /// <summary>
 28     /// 数据绑定控件
 29     /// </summary>
 30     //public BaseDataBoundControl DataControl
 31     //{
 32     //    get { return this.dataControl; }
 33     //    set { this.dataControl = value; }
 34     //}
 35     //DataList控件
 36     //private DataList dataControl;
 37     //public DataList DataControl
 38     //{
 39     //    get { return this.dataControl; }
 40     //    set { this.dataControl = value; }
 41     //}
 42     //repeater控件
 43     //private Repeater dataControl;
 44     //public Repeater DataControl
 45     //{
 46     //    get { return this.dataControl; }
 47     //    set { this.dataControl = value; }
 48     //} 
 49     #endregion
 50     private int showCount;//每页数量
 51     /// <summary>
 52     /// 每页显示的数量
 53     /// </summary>
 54     public int ShowCount
 55     {
 56         get { return this.showCount; }
 57         set { this.showCount = value; }
 58     }
 59     private DataTable objSource;//数据源
 60     /// <summary>
 61     /// DataTable类型的数据源
 62     /// </summary>
 63     public DataTable Objsource
 64     {
 65         get { return this.objSource; }
 66         set { this.objSource = value; }
 67     }
 68     #endregion
 69 
 70     #region 分页方法
 71     #region  分页
 72     /// <summary>  
 73     /// 分页  
 74     /// </summary>  
 75     protected void bind()
 76     {
 77         //获得当前的页码  
 78         int curPage = Convert.ToInt32(this.lblPage.Text);
 79         //使用PageDataSource类实现数据控件的分页  
 80         PagedDataSource ps = new PagedDataSource();
 81         //获取数据源 
 82         DataTable dt = new DataTable();
 83         dt = this.objSource;
 84         ps.DataSource = dt.DefaultView;
 85         //是否可以分页  
 86         ps.AllowPaging = true;
 87         //显示分页的数量  
 88         ps.PageSize = this.ShowCount;
 89         //取得当前页的页码  
 90         ps.CurrentPageIndex = curPage - 1;
 91         this.lbtnUp.Enabled = true;
 92         this.lbtnNext.Enabled = true;
 93         this.lbtnBack.Enabled = true;
 94         this.lbtnOne.Enabled = true;
 95         if (curPage == 1)
 96         {
 97             //不显示第一页按钮  
 98             this.lbtnOne.Enabled = false;
 99             //不显示上一页按钮  
100             this.lbtnUp.Enabled = false;
101         }
102         if (curPage == ps.PageCount)
103         {
104             //不显示下一页按钮  
105             this.lbtnNext.Enabled = false;
106             //不显示最后一页按钮  
107             this.lbtnBack.Enabled = false;
108         }
109         //显示分页数量  
110         this.lblBackPage.Text = Convert.ToString(ps.PageCount);
111         //绑定到数据源控件  
112         this.DataControl.DataSource = ps;
113         this.DataControl.DataBind();
114     }
115     #endregion
116     #region 第一页
117     /// <summary>  
118     /// 第一页  
119     /// </summary>  
120     /// <param name="sender"></param>  
121     /// <param name="e"></param>  
122     protected void lbtnOne_Click(object sender, EventArgs e)
123     {
124         this.lblPage.Text = "1";
125         this.bind();
126     }
127     #endregion
128     #region 上一页
129     /// <summary>  
130     /// 上一页  
131     /// </summary>  
132     /// <param name="sender"></param>  
133     /// <param name="e"></param>  
134     protected void lbtnUp_Click(object sender, EventArgs e)
135     {
136         this.lblPage.Text = Convert.ToString(Convert.ToInt32(this.lblPage.Text) - 1);
137         this.bind();
138     }
139     #endregion
140     #region 下一页
141     /// <summary>  
142     /// 下一页  
143     /// </summary>  
144     /// <param name="sender"></param>  
145     /// <param name="e"></param>  
146     protected void lbtnNext_Click(object sender, EventArgs e)
147     {
148         this.lblPage.Text = Convert.ToString(Convert.ToInt32(this.lblPage.Text) + 1);
149         this.bind();
150     }
151     #endregion
152     #region 最后一页
153     /// <summary>  
154     /// 最后一页  
155     /// </summary>  
156     /// <param name="sender"></param>  
157     /// <param name="e"></param>  
158     protected void lbtnBack_Click(object sender, EventArgs e)
159     {
160         this.lblPage.Text = this.lblBackPage.Text;
161         this.bind();
162     }
163     #endregion
164     //显示所有页数
165     public void showPage()
166     {
167         int count = Convert.ToInt32(lblBackPage.Text);
168         int[] num = new int[count];
169         for (int i = 1; i <= count; i++)
170         {
171             num[i - 1] = i;
172             //DropDownList1.DataValueField = i.ToString();//指定下拉列表中的值部分 
173         }
174         DropDownList1.DataSource = num;
175         DropDownList1.DataBind();
176     }
177     //跳转到指定页
178     protected void Button1_Click(object sender, EventArgs e)
179     {
180         string page = DropDownList1.SelectedValue;
181         lblPage.Text = page;//由于显示当前页控件从1开始
182         bind();
183     }
184     #endregion
185 }
186 }

调用时 需要给属性 数据源控件DataControl，每页显示数量ShowCount，数据源Objsource为DataTable类型

  protected void Page_Load(object sender, EventArgs e)
2         {
3             //gridview的分页
4          this.pager11.DataControl = this.GridView1;
5          this.pager11.ShowCount = 20;
6          sqlHelper s = new sqlHelper();
7          this.pager11.Objsource =s.getAll().Tables[0];
8         }

其中注意一点是 调用时代码不能写在 Ispostback里面

代码在下一页提供，欢迎期待……