菜鸟级分页用户控件

菜鸟级分页用户控件

新项目开始了，先前总结了以前做项目的缺点，问题特别突出的是关于GridView控件分页的问题，想了很久，几乎每个页面都要用到GridView控件，而且按照原来的拖放式修改起来很麻烦，所以开始菜鸟分页用户控件的制作。

采用的方法肯定是存储过程分页了，自己SQL又学得差，只会那几条，写不出来那么好的，所以在网上找了一个认为比较好的，看看下面的代码：

Code

好了，研究了下上面的SQL代码，所在VS2005里面做一个分页用户控件，就是专门对上面的那个存储过程的，原理基本上是通过用户控件来控制显示的条数和页码，应该是吧？看看下面的代码。

前台：

<%@ Control Language="C#" AutoEventWireup="true" CodeFile="PageControl.ascx.cs" Inherits="Page" %>

<table width="">
  <tr>
    <td>第<asp:Label ID="labdang" runat="server" Text="1"></asp:Label>页/共<asp:Label ID="labgong" runat="server" Text=""></asp:Label>页</td>
    <td><asp:LinkButton ID="lkbfirst" runat="server" OnClick="lkbfirst_Click">第一页</asp:LinkButton></td>
    <td><asp:LinkButton ID="lkblast" runat="server" OnClick="lkblast_Click">上一页</asp:LinkButton></td>
    <td><asp:LinkButton ID="lkbnext" runat="server" OnClick="lkbnext_Click">下一页</asp:LinkButton></td>
    <td><asp:LinkButton ID="lkbback" runat="server" OnClick="lkbback_Click">最后页</asp:LinkButton></td>
    <td>跳转<asp:TextBox ID="tbxgo" runat="server" Width="30px">1</asp:TextBox></td>
    <td><asp:Button ID="btngo" runat="server" Text="跳转" Width ="60px" OnClick="btngo_Click" /></td>
    <td>
       每页显示
       <asp:DropDownList ID="drpcount" runat="server" AutoPostBack="True" OnSelectedIndexChanged="drpcount_SelectedIndexChanged">
           <asp:ListItem>10</asp:ListItem>
           <asp:ListItem>15</asp:ListItem>
           <asp:ListItem>20</asp:ListItem>
           <asp:ListItem>50</asp:ListItem>
           <asp:ListItem>100</asp:ListItem>
        </asp:DropDownList>条
    </td>
  </tr>
</table>

后台：

using System;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class Page : System.Web.UI.UserControl
{

    #region 定义变量
    //第几页
    private int ofcount = 1;
    //共几页
    private int pagecounts;
    //跳转到几页
    private int gocount;
    //显示多少条
    private int showcounts;
    //申明委托，执行翻页后数据绑定的页面层方法
    public delegate void RefreshPage();
    private RefreshPage refresh;
    //表名
    private string _TBName;
    //字段
    private string _Field;
    //条件
    private string _WhereStr;
    #endregion

    #region 定义属性

    /// <summary>
    /// 设置数据源表名
    /// </summary>
    public string TBname
    {
        set { _TBName = value; }
    }
    /// <summary>
    /// 设置字段，使用","隔开
    /// </summary>
    public string Field
    {
        set { _Field = value; }
    }
    /// <summary>
    /// 设置查询的条件
    /// </summary>
    public string WhereStr
    {
        set { _WhereStr = value; }
    }
    public RefreshPage Refresh
    {
        get
        {
            return refresh;
        }
        set
        {
            refresh = value;
        }
    }
    /// <summary>
    /// 设置总页数
    /// </summary>
    private int SetCounts
    {
        get
        {
            return Convert.ToInt32(labgong.Text);
        }
        set
        {
            labgong.Text = value.ToString();
        }
    }
    /// <summary>
    /// 获取请求第几页的index
    /// </summary>
    private int OfCount
    {
        get
        {
            return ofcount;
        }
    }
    /// <summary>
    /// 获取输入的每页显示多少条
    /// </summary>
    private int ShowCounts
    {
        get
        {
            try
            {
                showcounts = Convert.ToInt32(drpcount.SelectedValue);
                return showcounts;
            }
            catch
            {
                return 10;
            }
        }
    }

    #endregion

    #region 定义方法
    public DataSet GvDataBind()
    {
        showcounts = Convert.ToInt32(drpcount.SelectedValue);
        return GetDataSet();
    }
    #endregion

    #region 定义事件
    protected void Page_Load(object sender, EventArgs e)
    {
        //初始化加载
        if (!IsPostBack)
        {

        }

    }
    protected void btngo_Click(object sender, EventArgs e)
    {
        //跳转
        int tmp = 0;
        try
        {
            tmp = Convert.ToInt32(tbxgo.Text);
        }
        catch
        {
            tmp = 1;
            tbxgo.Text = "1";
        }
        if (tmp <= 0)
        {
            tmp = 1;
        }
        int tmp2 = Convert.ToInt32(labgong.Text);
        if (tmp > tmp2)
        {
            ofcount = tmp2;
        }
        else
        {
            ofcount = tmp;
        }
        labdang.Text = ofcount.ToString();
        tbxgo.Text = ofcount.ToString();
        Refresh();
    }
    protected void lkbfirst_Click(object sender, EventArgs e)
    {
        //第一页
        ofcount = 1;
        labdang.Text = ofcount.ToString();
        Refresh();
    }
    protected void lkblast_Click(object sender, EventArgs e)
    {
        //上一页
        int tmp = Convert.ToInt32(labdang.Text);
        tmp = tmp - 1;
        if (tmp <= 0)
        {
            tmp = 1;
        }
        ofcount = tmp;
        labdang.Text = tmp.ToString();
        Refresh();
    }

    protected void lkbnext_Click(object sender, EventArgs e)
    {
        //下一页
        int tmp = Convert.ToInt32(labgong.Text);
        int tmp2 = Convert.ToInt32(labdang.Text);
        tmp2 = tmp2 + 1;
        if (tmp2 > tmp)
        {
            ofcount = tmp;
            labdang.Text = tmp.ToString();
        }
        else
        {
            ofcount = tmp2;
            labdang.Text = tmp2.ToString();
        }
        Refresh();
    }
    protected void lkbback_Click(object sender, EventArgs e)
    {
        //最后一页
        ofcount = Convert.ToInt32(labgong.Text);
        labdang.Text = ofcount.ToString();
        Refresh();
    }
    protected void drpcount_SelectedIndexChanged(object sender, EventArgs e)
    {
        //设置显示条数
        showcounts = Convert.ToInt32(drpcount.SelectedValue);
        labdang.Text = "1";
        Refresh();
    }
    #endregion

    #region 数据源
    private DataSet GetDataSet()
    {
        WMS.DataAccess.DataBase ado = new WMS.DataAccess.DataBase();
        SqlCommand cmd = new SqlCommand();
        cmd.CommandText = "proc_ListPage";
        //存储过程分页,表名
        SqlParameter tbname = new SqlParameter("@tblName", SqlDbType.VarChar, 50);
        tbname.Value = _TBName;
        cmd.Parameters.Add(tbname);
        //字段
        SqlParameter fldName = new SqlParameter("@fldName", SqlDbType.VarChar, 50);
        fldName.Value = _Field;
        cmd.Parameters.Add(fldName);
        //每页显示多少条
        SqlParameter pageSize = new SqlParameter("@pageSize", SqlDbType.VarChar, 10);
        pageSize.Value = showcounts;
        cmd.Parameters.Add(pageSize);
        //显示第几页
        SqlParameter page = new SqlParameter("@page", SqlDbType.VarChar, 20);
        page.Value = ofcount;
        cmd.Parameters.Add(page);
        //总页数
        SqlParameter pageCount = new SqlParameter("@pageCount", SqlDbType.VarChar, 20);
        pageCount.Direction = ParameterDirection.Output;
        cmd.Parameters.Add(pageCount);
        //总条数
        SqlParameter Counts = new SqlParameter("@Counts", SqlDbType.VarChar, 20);
        Counts.Direction = ParameterDirection.Output;
        cmd.Parameters.Add(Counts);
        //排序字段
        SqlParameter fldSort = new SqlParameter("@fldSort", SqlDbType.VarChar, 20);
        fldSort.Value = "flngID";
        cmd.Parameters.Add(fldSort);
        //排序方式
        SqlParameter Sort = new SqlParameter("@Sort", SqlDbType.VarChar, 20);
        Sort.Value = "1";
        cmd.Parameters.Add(Sort);
        //查询条件
        SqlParameter strCondition = new SqlParameter("@strCondition", SqlDbType.VarChar, 100);
        strCondition.Value = _WhereStr;
        cmd.Parameters.Add(strCondition);
        //表主键
        SqlParameter ID = new SqlParameter("@ID", SqlDbType.VarChar, 10);
        ID.Value = "flngID";
        cmd.Parameters.Add(ID);

        SqlParameter Dist = new SqlParameter("@Dist", SqlDbType.Bit);
        Dist.Value = 0;
        cmd.Parameters.Add(Dist);

        DataSet ds = ado.GetDataSet(ref cmd);
        pagecounts = Convert.ToInt32(pageCount.Value);
        labgong.Text = pagecounts.ToString();
        return ds;
    }
    #endregion

}

好了，大功告成了，再通过页面调用试试，怎么调用：

protected void Page_Load(object sender, EventArgs e)
    {
        p1.Refresh = gvDataBind;
        if (!IsPostBack)
        {
            gvDataBind();
        }

    }
    private void gvDataBind()
    {
        p1.TBname = "Customers";
        p1.Field = "CustomerID, CompanyName ";
        p1.WhereStr = string.Empty;
        DataSet ds = p1.GvDataBind();
        GridView1.DataSource = ds;
        GridView1.DataBind();

    }

应该可以了吧？
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原文地址：https://www.cnblogs.com/yunxizfj/p/1260211.html