Control Study -> 自定义DataGrid翻页控件(示例代码下载) -优快云博客

本文链接：https://blog.youkuaiyun.com/techweb/article/details/1936957

(一)说明

一般情况下,使用DataGrid自带的翻页按钮就能够实现所有翻页操作了，但有时候想定制自己的翻页样式

或美化其显示效果，这时可以自已写个翻页用户控件.

(二).显示效果载图

说明: DataGrid上面的一些控件为自定义的翻页控件

(二)代码

1.*.aspx代码文件:

    <%@ Page language="c#" Codebehind="DGCustomerPagination.aspx.cs" AutoEventWireup="false" Inherits="New_DataGrid自定义分页事件.WebForm1" %>

  WebForm1



   http://schemas.microsoft.com/intellisense/ie5" name="vs_targetSchema">

2.*.aspx.cs代码文件

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;

namespace New_DataGrid自定义分页事件
{
///

/// DataGrid自定义分页
///

public class WebForm1 : System.Web.UI.Page
{
  protected System.Web.UI.WebControls.DataGrid DataGrid1;
  protected System.Web.UI.WebControls.LinkButton lbLastPage;
  protected System.Web.UI.WebControls.LinkButton lbNextPage;
  protected System.Web.UI.WebControls.LinkButton lbPrevPage;
  protected System.Web.UI.WebControls.LinkButton lbFirstPage;
  protected System.Web.UI.WebControls.Label lblDisplayPosition;
  protected System.Web.UI.WebControls.Button btnSelectPage;
  protected System.Web.UI.WebControls.TextBox txtSelectPage;
  protected System.Web.UI.WebControls.Label lblError;
  protected System.Web.UI.WebControls.Button Button1;

  protected System.Web.UI.WebControls.Label lbTotal; //显示记录总数
  private static int intRecord = 0;   //显示总记录数

  private void Page_Load(object sender, System.EventArgs e)
  {
   this.lblError.Text = "";
   if(!Page.IsPostBack)
   {
    GetData(); // 生成数据
    this.BindData(); //绑定数据到DataGrid
    DisPlayStats();   //显示这样的表示: 2/100 意思是:共100页，当前为第二页
   }
  }

///

/// 生成数据
///

  private void GetData()
  {
   DataTable table = new DataTable();
   DataColumnCollection columns = table.Columns;

   //定义结构
   columns.Add("学号",typeof(System.Int32));
   columns.Add("分数",typeof(System.Int32));

   Random myRandom = new Random();
   int intScore = 0;
   for(int i = 1;i < 101; i++)
   {
    intScore = myRandom.Next(100);
    DataRow drNew = table.NewRow();
    drNew[0] = i.ToString();
    drNew[1] = intScore.ToString();
    table.Rows.Add(drNew);
   }
   this.ViewState.Add("table",table);

   intRecord = table.Rows.Count;
   this.lbTotal.Text = "总共:"+intRecord.ToString()+"条记录";
  }

///

/// 绑定DataGrid
///

  private void BindData()
  {
   DataTable table = (DataTable)this.ViewState["table"];
   this.DataGrid1.DataSource = table;
   this.DataGrid1.DataBind();

}

///

/// 自定义控件按钮事件
///

  ///
  ///
  public void ChangePageClick(object sender, EventArgs e)
  {
   string CommandName = ((LinkButton)sender).CommandArgument.ToString();
   switch(CommandName)
   {
    case "next":
     if (DataGrid1.CurrentPageIndex < DataGrid1.PageCount - 1 )
     {
      DataGrid1.CurrentPageIndex += 1;
     }
     break;
    case "prev":
     if (DataGrid1.CurrentPageIndex > 0)
     {
      DataGrid1.CurrentPageIndex -= 1;
     }
     break;
    case "last":
     DataGrid1.CurrentPageIndex = (DataGrid1.PageCount - 1);
     break;
    default:
     DataGrid1.CurrentPageIndex = 0;
     break;
   }
   DisPlayStats();
  }

  public void DisPlayStats()
  {
   this.lblDisplayPosition.Text = (DataGrid1.CurrentPageIndex + 1).ToString() + "/";
   this.lblDisplayPosition.Text += DataGrid1.PageCount.ToString();
   this.txtSelectPage.Text = (DataGrid1.CurrentPageIndex + 1).ToString();
  }

  #region Web 窗体设计器生成的代码
  override protected void OnInit(EventArgs e)
  {
   //
   // CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
   //
   InitializeComponent();
   base.OnInit(e);
  }

  ///

  /// 设计器支持所需的方法 - 不要使用代码编辑器修改
  /// 此方法的内容。
  ///

  private void InitializeComponent()
  {
   this.DataGrid1.PageIndexChanged += new System.Web.UI.WebControls.DataGridPageChangedEventHandler(this.DataGrid1_PageIndexChanged);
   this.btnSelectPage.Click += new System.EventHandler(this.btnSelectPage_Click);
   this.Load += new System.EventHandler(this.Page_Load);

}
#endregion

  private void DataGrid1_PageIndexChanged(object source, System.Web.UI.WebControls.DataGridPageChangedEventArgs e)
  {
   try
   {
    this.DataGrid1.CurrentPageIndex = e.NewPageIndex;
   }
   catch
   {
    this.DataGrid1.CurrentPageIndex = 0;
   }
   this.BindData();
  }

  private void btnSelectPage_Click(object sender, System.EventArgs e)
  {
   int intPage = 0;
   try
   {
    intPage = int.Parse(this.txtSelectPage.Text);
   }
   catch
   {
    this.lblError.Text = "只能输入数字!";
    return;
   }

   try
   {
    this.DataGrid1.CurrentPageIndex = intPage-1;
    this.BindData();
   }
   catch
   {
    this.DataGrid1.CurrentPageIndex = 0;
    this.BindData();
                this.lblError.Text = "超出页码范围!";
   }

   DisPlayStats();
  }
}
}