关于datagrid分页的问题

Question

就是我用的是datagrid自带的分页，能不能在系统生成分页的那一栏添加一个自己写跳转的功能？？
谢谢？？如何加进去~~~

Answer 1

private void DataGrid1_ItemDataBound(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
{
if(e.Item.ItemType==ListItemType.Pager)
{
TextBox txt=new TextBox();
txt.Text="aaa";
txt.ID="txt1";
e.Item.Controls.Add(txt);
}
}
试试行不行

Answer 2

一楼的方法可以在Pager里添加自己的控件，实现额外的分页功能，难倒不难，就是每个DataGrid都要如此处理非常啰嗦，所以推荐使用别人写好的翻页控件：http://community.csdn.net/Expert/topic/5084/5084788.xml?temp=.9058496

Answer 3

也可以自己写控件，例子：
using System;
using System.Collections;
using System.Collections.Specialized;
using System.Text;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Xml;
using System.Data;
using System.ComponentModel;namespace WebGridPager
{
/// <summary>
    /// 类 名 称：GridPager
    /// 内容摘要：该代码文件的主要功能是翻页控件，处理DataGrid的翻页。
/// </summary>
[ValidationPropertyAttribute("Text")]
    public class GridPager : Control, INamingContainer, IPostBackDataHandler, IPostBackEventHandler
    {
        #region 变量
        protected TextBox txtPageIndex;
        protected Label lblRowsCount,lblPageSize,lblPageCount;
        protected Button btnGO;
        protected DataGrid objectGrid;
        protected Button btnFirst,btnLast,btnPre,btnNext;
        protected System.Web.UI.HtmlControls.HtmlTable Table1;        //定义事件的委托
        public delegate void ButtonClickEventHandler(object sender,System.EventArgs e);        //定义事件
        public event ButtonClickEventHandler PageIndexChanged;
        #endregion         #region 属性
        private string ViewStateText
        {
            get
            {
                object local = base.ViewState["Text"];
                return (local != null) ? (String)local : "";
            }
        }        public string Text
        {
            get
            {
                return ViewStateText;
            }
            set
            {
                base.ViewState["Text"] = value;
            }
        }        public DataGrid ObjectGrid
        {
            
            set
            {
                objectGrid = value;
                objectGrid.AllowPaging = true;
                objectGrid.PagerStyle.Visible = false;
                objectGrid.DataBinding+=new EventHandler(dg_DataBinding);
                
            }
            
        }
       
        #endregion

Answer 4

#region 方法区
        protected override void OnInit(EventArgs e)
        {
            base.OnInit (e);            Table1 = new HtmlTable();
            Table1.Border = 0;
            Table1.CellPadding = 0;
            Table1.CellSpacing = 0;
            HtmlTableRow tableRow = new HtmlTableRow();
            HtmlTableCell tableCell = new HtmlTableCell();
            tableCell.NoWrap = true;
            //tableCell.VAlign = "bottom";
            tableRow.Cells.Add(tableCell);
            Table1.Rows.Add(tableRow);
            base.Controls.Add(Table1);            Label lblTitle = new Label();
            lblTitle.Text = "共有";
            tableCell.Controls.Add(lblTitle);            lblRowsCount = new Label();
            lblRowsCount.Text = "0";
            lblRowsCount.ForeColor = System.Drawing.Color.Blue;
            tableCell.Controls.Add(lblRowsCount);            lblTitle = new Label();
            lblTitle.Text = "项 每页";
            tableCell.Controls.Add(lblTitle);            lblPageSize = new Label();
            lblPageSize.Text = "0";
            lblPageSize.ForeColor = System.Drawing.Color.Blue;
            tableCell.Controls.Add(lblPageSize);            lblTitle = new Label();
            lblTitle.Text = "项 共";
            tableCell.Controls.Add(lblTitle);            lblPageCount = new Label();
            lblPageCount.Text = "0";
            lblPageCount.ForeColor = System.Drawing.Color.Blue;
            tableCell.Controls.Add(lblPageCount);            lblTitle = new Label();
            lblTitle.Text = "页 ";
            tableCell.Controls.Add(lblTitle);            btnFirst = new Button();
            btnFirst.Text = "9";
            btnFirst.Height=19;
            btnFirst.ForeColor = System.Drawing.Color.Blue;
            btnFirst.Font.Name = "webdings";
            btnFirst.Style.Add("BACKGROUND-COLOR","transparent");
            btnFirst.Style.Add("BORDER-TOP-STYLE","none");
            btnFirst.Style.Add("BORDER-BOTTOM-STYLE","none");
            btnFirst.Style.Add("BORDER-LEFT-STYLE","none");
            btnFirst.Style.Add("BORDER-RIGHT-STYLE","none");
            btnFirst.Style.Add("CURSOR","hand");
            btnFirst.Style.Add("FONT-SIZE","12pt");
            
            btnFirst.Attributes.Add("title","首页");
            btnFirst.Click+=new EventHandler(btnFirst_Click);
            tableCell.Controls.Add(btnFirst);            btnPre = new Button();
            btnPre.Text =  "7";
            btnPre.Height=19;
            btnPre.ForeColor = System.Drawing.Color.Blue;
            btnPre.Font.Name = "webdings";
            btnPre.Style.Add("BACKGROUND-COLOR","transparent");
            btnPre.Style.Add("BORDER-TOP-STYLE","none");
            btnPre.Style.Add("BORDER-BOTTOM-STYLE","none");
            btnPre.Style.Add("BORDER-LEFT-STYLE","none");
            btnPre.Style.Add("BORDER-RIGHT-STYLE","none");
            btnPre.Style.Add("CURSOR","hand");
            btnPre.Style.Add("FONT-SIZE","12pt");
           
            btnPre.Attributes.Add("title","上一页");
            btnPre.Click+=new EventHandler(btnPre_Click);
            tableCell.Controls.Add(btnPre);            btnNext = new Button();
            btnNext.Text =  "8";
            btnNext.Height=19;
            btnNext.ForeColor = System.Drawing.Color.Blue;
            btnNext.Font.Name = "webdings";
            btnNext.Style.Add("BACKGROUND-COLOR","transparent");
            btnNext.Style.Add("BORDER-TOP-STYLE","none");
            btnNext.Style.Add("BORDER-BOTTOM-STYLE","none");
            btnNext.Style.Add("BORDER-LEFT-STYLE","none");
            btnNext.Style.Add("BORDER-RIGHT-STYLE","none");
            btnNext.Style.Add("CURSOR","hand");
            btnNext.Style.Add("FONT-SIZE","12pt");
            
            btnNext.Attributes.Add("title","下一页");
            btnNext.Click+=new EventHandler(btnNext_Click);
            tableCell.Controls.Add(btnNext);            btnLast = new Button();
            btnLast.Text =  ": ";
            btnLast.Height=19;
            btnLast.ForeColor = System.Drawing.Color.Blue;
            btnLast.Font.Name = "webdings";
            btnLast.Style.Add("BACKGROUND-COLOR","transparent");
            btnLast.Style.Add("BORDER-TOP-STYLE","none");
            btnLast.Style.Add("BORDER-BOTTOM-STYLE","none");
            btnLast.Style.Add("BORDER-LEFT-STYLE","none");
            btnLast.Style.Add("BORDER-RIGHT-STYLE","none");
            btnLast.Style.Add("CURSOR","hand");
            btnLast.Style.Add("FONT-SIZE","12pt");
            
            btnLast.Attributes.Add("title","末页");
            btnLast.Click+=new EventHandler(btnLast_Click);
            tableCell.Controls.Add(btnLast);            lblTitle = new Label();
            lblTitle.Text = " 跳到第";
            tableCell.Controls.Add(lblTitle);            txtPageIndex = new TextBox();
            txtPageIndex.Width = 40;
            txtPageIndex.MaxLength = 5;
            txtPageIndex.Style.Add("TEXT-ALIGN","center");
            txtPageIndex.Attributes.Add("onkeydown","if(!((event.keyCode>=48&&event.keyCode<=57)||(event.keyCode>=96&&event.keyCode<=105) || event.keyCode == 8 || event.keyCode == 9))event.returnValue=false;");
           
            txtPageIndex.Style.Add("IME-MODE","disabled");
            tableCell.Controls.Add(txtPageIndex);            lblTitle = new Label();
            lblTitle.Text = "页";
            tableCell.Controls.Add(lblTitle);            btnGO = new Button();
            btnGO.Text = "GO";
            btnGO.Style.Add("CURSOR","hand");
            btnGO.Click+=new EventHandler(btnGO_Click);
            tableCell.Controls.Add(btnGO);            if(!Page.IsPostBack)
                Table1.Style.Add("display","none");
        }
        

Answer 5

        public virtual void RaisePostBackEvent(string eventArgument)
        {
        }        public virtual void RaisePostDataChangedEvent()
        {
        }        public virtual bool LoadPostData(string postDataKey, NameValueCollection values)
        {
            bool flag;            string str1 = ViewStateText;
            string str2 = values[base.ID];
            if (!str1.Equals(str2))
            {
                Text = str2;
                flag = true;
            }
            else
            {
                flag = false;
            }
            return flag;
        }        private void dg_DataBinding(object sender, EventArgs e)
        {
            
                if(objectGrid.DataSource != null)
                {
                    DataView dv = null;
                    if(objectGrid.DataSource.GetType().ToString() == "System.Data.DataView")
                        dv = (DataView)objectGrid.DataSource;
                    else if(objectGrid.DataSource.GetType().ToString() == "System.Data.DataTable")
                        dv = ((DataTable)objectGrid.DataSource).DefaultView;
    
                    if(Table1 != null) 
                    {
                        Table1.Style.Add("display","inline");
                        lblRowsCount.Text = dv.Count.ToString();
                        lblPageSize.Text = objectGrid.PageSize.ToString();                        int PageCount = (int)Math.Ceiling((double)dv.Count/objectGrid.PageSize);
                        if(objectGrid.CurrentPageIndex >= PageCount)
                            objectGrid.CurrentPageIndex = Math.Max(0,PageCount -1);                        lblPageCount.Text = PageCount.ToString();
                        txtPageIndex.Text = (objectGrid.CurrentPageIndex+1).ToString();
                    
                        btnFirst.Enabled = true;
                        btnPre.Enabled = true;
                        btnNext.Enabled = true;
                        btnLast.Enabled = true;                        if(PageCount<2)
                        {
                            btnNext.Enabled = false;
                            btnLast.Enabled = false;
                        }                        if(objectGrid.CurrentPageIndex == 0)
                        {
                            btnFirst.Enabled = false;
                            btnPre.Enabled = false;
                        }                        if(objectGrid.CurrentPageIndex == PageCount - 1)
                        {
                            btnNext.Enabled = false;
                            btnLast.Enabled = false;
                        }                        
                        if(dv.Count<1)
                        {
                            txtPageIndex.Text = "0";
                            txtPageIndex.Enabled = false;
                            btnGO.Enabled = false;
                        }
                        else
                        {
                            txtPageIndex.Enabled = true;
                            btnGO.Enabled = true;
                        }
                    }
                    
                }
                else
                {
                    if(Table1 != null)
                        Table1.Style.Add("display","none");
                }
            
        }        private void btnFirst_Click(object sender, EventArgs e)
        {
            if(objectGrid != null)
            {
                objectGrid.CurrentPageIndex = 0;                //如果有对象登记事件，通过委托的所有对象
                if (PageIndexChanged != null)
                {
                    PageIndexChanged(sender,e);
                }
            }
        }        private void btnPre_Click(object sender, EventArgs e)
        {
            if(objectGrid != null)
            {
                objectGrid.CurrentPageIndex = Math.Max(0,objectGrid.CurrentPageIndex-1);                //如果有对象登记事件，通过委托的所有对象
                if (PageIndexChanged != null)
                {
                    PageIndexChanged(sender,e);
                }
            }
        }        private void btnNext_Click(object sender, EventArgs e)
        {
            if(objectGrid != null)
            {
                objectGrid.CurrentPageIndex = Math.Min(objectGrid.CurrentPageIndex+1,objectGrid.PageCount-1);                //如果有对象登记事件，通过委托的所有对象
                if (PageIndexChanged != null)
                {
                    PageIndexChanged(sender,e);
                }
            }
        }        private void btnLast_Click(object sender, EventArgs e)
        {
            if(objectGrid != null)
            {
                objectGrid.CurrentPageIndex = objectGrid.PageCount - 1;                //如果有对象登记事件，通过委托的所有对象
                if (PageIndexChanged != null)
                {
                    PageIndexChanged(sender,e);
                }
            }
        }        private void btnGO_Click(object sender, EventArgs e)
        {
            if(objectGrid != null)
            {
                int newIndex = 0;
                try
                {
                    newIndex = Convert.ToInt32(txtPageIndex.Text.Trim());
                    newIndex = newIndex - 1;
                }
                catch{}                objectGrid.CurrentPageIndex = Math.Min(Math.Max(0,newIndex),objectGrid.PageCount - 1);                //如果有对象登记事件，通过委托的所有对象
                if (PageIndexChanged != null)
                {
                    PageIndexChanged(sender,e);
                }
            }
        }
        #endregion
        
    }
}