kkding

无心无为 手机电脑一个都不能少。

 

DataGrid分页中文效果,与大家共享,顺便有能者把DropDownList的触发找到。我是放在呈现上。

///<copyright>kkding 2005</copyright>
///<version>V1.0  </verion>
///<createdate>2003-7-7</createdate>
///<author>丁科康</author>
///<email>kkdingsoft@sina.com</email>
///<log date="2003-7-7">创建</log>


using System;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.ComponentModel;
using System.Drawing;
using System.Drawing.Design;
using System.Reflection;
using System.Globalization;

namespace Kkding.Web.UI.WebControls
{
    #region Summary
 /// <summary>
 /// DataGrid 的摘要说明。
 /// </summary>
    #endregion
    [DefaultProperty("Text"), ToolboxBitmap(typeof(System.Web.UI.WebControls.DataGrid)),
    ToolboxData("<{0}:DataGrid runat=server></{0}:DataGrid>")]
    public class DataGrid : System.Web.UI.WebControls.DataGrid,INamingContainer {

     #region Variable 
        private string sStartPage="首页";
        private string sPrevPage="上页";
        private string sNextPage="下页";
        private string sEndPage="尾页";
        //private int maxRecord=0;
        private string pageCSS="scrollButton";
        private const string PAGERBAR="共<font color=red>$MaxRecord$</font>条/每页<font color=red>$PageSize$</font>条&nbsp;当前第<font color=red>$CurrentPage$</font>页/共<font color=red>$PageCount$</font>页";
        private DropDownList ddlbottum;
        private DropDownList ddltop;
        private bool bottumflag =false;
        #endregion

        #region Event
        //public event  DataGridPageChangedEventHandler  PageIndexChanged;
        #endregion

        #region Property
        /// <summary>
        /// 总记录数
        /// </summary>
        [Bindable(true),
        Category("分页"),
        Description("总记录数")]
        public int MaxRecord{
            get{
                object obj=ViewState["maxRecord"];
                return ((null ==obj ) ? 0 : Convert.ToInt32( obj));
            }
            set{
                VirtualItemCount = (value-1) / PageSize+1;
                ViewState["maxRecord"]=value;
            }
        }
        [Bindable(true),
        Category("翻页"),
        DefaultValue("首页"),Description("回到首页")]
        public string StartPage{
            get{
                return sStartPage;
            }
            set{
                sStartPage=value;
            }
           
        }
        [Bindable(true),
        Category("翻页"),
        DefaultValue("尾页"),Description("回到尾页")]
        public string EndPage{
            get{
                return sEndPage;
               
            }
            set{
                sEndPage=value;
            }
           
        }
        [Bindable(true),
        Category("翻页"),
        DefaultValue("上页"),Description("上一页")]
        public string PrevPage{
            get{
                return sPrevPage;
            }
            set{
                sPrevPage=value;
            }
        }
        [Bindable(true),
        Category("翻页"),
        DefaultValue("下页"),Description("下一页")]
        public string NextPage{
            get{
                return sNextPage;
            }
            set{
                sNextPage=value;
            }
        }
        [Bindable(true),
        Category("翻页外观"),
        DefaultValue(""),Description("按钮的CSS")]
        public string PageCSS{
            get{
                return pageCSS;
            }
            set{
                pageCSS=value;
            }
        }
        [DesignerSerializationVisibilityAttribute(DesignerSerializationVisibility.Hidden)]
        [BrowsableAttribute(false)]
        [DescriptionAttribute("DataGrid_PageCount")]
        public new int PageCount
        {
            get
            {
                if (PagerStyle.Mode == PagerMode.NextPrev)
                {
                    return VirtualItemCount;
                }
                else
                {
                    return base.PageCount;
                }
            }
        }
        [BrowsableAttribute(false)]
        [BindableAttribute(true)]
        [DesignerSerializationVisibilityAttribute(DesignerSerializationVisibility.Hidden)]
        [DescriptionAttribute("DataGrid_CurrentPageIndex")]
        public int CurrentPage
        {
            get
            {
                object local = base.ViewState["CurrentPage"];
                if (local != null)
                {
                    return (int)local;
                }
                else
                {
                    return 0;
                }
            }

            set
            {
                if (value < 0)
                {
                    throw new ArgumentOutOfRangeException("value");
                }
                base.ViewState["CurrentPage"] = value;
            }
        }
        #endregion

        #region 构造
        /*
        public DataGridTable():base(){
           
           
        }*/
        #endregion

        #region Method

        protected override void OnInit(EventArgs e){
           
            EnableViewState = true;
            //CssClass="coolGrid";
            base.OnInit(e);
           
            //this.Attributes["cols"] = this.Columns.Count+"";
        }

       
        protected override void OnPreRender(EventArgs e) {
            OnDropDownListEvent(e,ddltop);
            OnDropDownListEvent(e , ddlbottum);
            Page.GetPostBackEventReference(this);
        }
        private void OnDropDownListEvent(EventArgs e , DropDownList ddl)
        {
            if(ddl != null)
            {
                if(Convert.ToInt32( ddl.SelectedValue ) !=CurrentPage )
                {
                    OnPageIndexChanged(new DataGridPageChangedEventArgs(e,Convert.ToInt32( ddl.SelectedValue )));
                }
            }
        }
        protected override void OnItemDataBound(DataGridItemEventArgs e) {
            base.OnItemDataBound(e);
        }
        protected override void OnItemCommand(DataGridCommandEventArgs e){
            base.OnItemCommand(e);
           
        }
        protected override bool OnBubbleEvent(object source,EventArgs e){
            if(source is DataGridItem)
            {
                if(PagerStyle.Mode == PagerMode.NextPrev)
                {
                    DataGridCommandEventArgs dge = (DataGridCommandEventArgs)e;
                    if(dge.CommandName.Equals("Page"))
                    {
                        OnPageIndexChanged(new DataGridPageChangedEventArgs(dge.Item,Convert.ToInt32( dge.CommandArgument)));
                    }
                    return true;
                }
            }
            return base.OnBubbleEvent( source,e);
        }
        protected override void InitializeItem(DataGridItem item, DataGridColumn[] columns)
        {
           
            base.InitializeItem(item,columns);
        }
        /// <summary>
        ///
        /// </summary>
        /// <param name="ddl"></param>
        /// <param name="tableCell"></param>
        private void InitializeDropDownList(ref DropDownList ddl , TableCell tableCell)
        {
            ddl = new DropDownList();
            ddl.AutoPostBack = true;
            for(int i=0;i<PageCount;i++)
            {
                ddl.Items.Add( new ListItem ( (i+1)+"", i + "" ) );
            }
            ddl.ClearSelection();
            ddl.SelectedIndex = CurrentPage;
            tableCell.Controls.Add(new LiteralControl("到第"));
            tableCell.Controls.Add( ddl );
            tableCell.Controls.Add(new LiteralControl("页"));
        }
        protected override void InitializePager(DataGridItem item, int columnSpan, PagedDataSource pagedDataSource)
        {
            TableCell tableCell = new TableCell();
            tableCell.ColumnSpan = columnSpan;
            DataGridPagerStyle dataGridPagerStyle = PagerStyle;
            if (PagerStyle.Mode == PagerMode.NextPrev)
            {
                tableCell.Controls.Add(new LiteralControl("<table class="+PageCSS+" width=100%> <tr><td nowrap>"));
                tableCell.Controls.Add(new LiteralControl( PAGERBAR.Replace("$MaxRecord$",MaxRecord+"").Replace("$PageSize$",PageSize+"").Replace("$CurrentPage$",(CurrentPage+1)+"").Replace("$PageCount$",VirtualItemCount+"")) );
                tableCell.Controls.Add(new LiteralControl("</td><td>"));
                bool pageflag = (CurrentPage != 0 );
//                if (CurrentPage != 0)
//                {
                    LinkButton link1 = new LinkButton();
                    link1.Text = sStartPage;
                    link1.CommandName = "Page";
                    link1.CommandArgument = "0";///"First";
                    link1.CausesValidation = false;
               link1.Enabled = pageflag;
                    tableCell.Controls.Add(link1);
                    tableCell.Controls.Add(new LiteralControl("&nbsp;"));
                    LinkButton linkButton1 = new LinkButton();
                    linkButton1.Text = sPrevPage;
                    linkButton1.CommandName = "Page";
                    linkButton1.CommandArgument = (CurrentPage-1)+"" ;//"Prev";
                    linkButton1.CausesValidation = false;
                linkButton1.Enabled = pageflag;
                    tableCell.Controls.Add(linkButton1);
//                }
//                else
//                {
//                    tableCell.Controls.Add(new LiteralControl("&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;"));
//                }
                tableCell.Controls.Add(new LiteralControl("&nbsp;&nbsp;"));
                //if (!pagedDataSource.IsLastPage)
//                if(CurrentPage< VirtualItemCount -1)
//                {
             pageflag = (CurrentPage< VirtualItemCount -1 );      
                    LinkButton linkButton2 = new LinkButton();
                    linkButton2.Text = sNextPage;
                    linkButton2.CommandName = "Page";
                    linkButton2.CommandArgument = (CurrentPage+1)+"" ; //"Next";
                    linkButton2.CausesValidation = false;
                linkButton2.Enabled = pageflag;
                    tableCell.Controls.Add(linkButton2);
                    tableCell.Controls.Add(new LiteralControl("&nbsp;"));
                    LinkButton link2 = new LinkButton();
                    link2.Text = sEndPage;
                    link2.CommandName = "Page";
                    link2.CommandArgument =  (PageCount-1)+"";   //"Last";
                    link2.CausesValidation = false;
                link2.Enabled = pageflag;
                    tableCell.Controls.Add(link2);
                   
//                }
//                else
//                {
//                    tableCell.Controls.Add(new LiteralControl("&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;"));
//                }
                tableCell.Controls.Add(new LiteralControl("</td><td nowrap align='right'>"));
                if(!bottumflag)
                {
                    InitializeDropDownList(ref ddlbottum ,tableCell);
                }else
                {
                    InitializeDropDownList(ref ddltop ,tableCell);
                }
                bottumflag=!bottumflag;
                tableCell.Controls.Add(new LiteralControl("</td></tr></table>"));
            }
            else
            {
                int i1 = pagedDataSource.PageCount;
                int j1 = pagedDataSource.CurrentPageIndex + 1;
                int k1 = dataGridPagerStyle.PageButtonCount;
                int i2 = k1;
                if (i1 < i2)
                {
                    i2 = i1;
                }
                int j2 = 1;
                int k2 = i2;
                if (j1 > k2)
                {
                    j2 = pagedDataSource.CurrentPageIndex / k1 * k1 + 1;
                    k2 = j2 + k1 - 1;
                    if (k2 > i1)
                    {
                        k2 = i1;
                    }
                    if (k2 - j2 + 1 < k1)
                    {
                        j2 = Math.Max(1, k2 - k1 + 1);
                    }
                }
                if (j2 != 1)
                {
                    LinkButton linkButton3 = new LinkButton();
                    linkButton3.Text = "...";
                    linkButton3.CommandName = "Page";
                    int k3 = j2 - 1;
                    linkButton3.CommandArgument = k3.ToString(NumberFormatInfo.InvariantInfo);
                    linkButton3.CausesValidation = false;
                    tableCell.Controls.Add(linkButton3);
                    tableCell.Controls.Add(new LiteralControl("&nbsp;"));
                }
                for (int j3 = j2; j3 <= k2; j3++)
                {
                    string str = j3.ToString(NumberFormatInfo.InvariantInfo);
                    if (j3 == j1)
                    {
                        Label label3 = new Label();
                        label3.Text = str;
                        tableCell.Controls.Add(label3);
                    }
                    else
                    {
                        LinkButton linkButton3 = new LinkButton();
                        linkButton3.Text = str;
                        linkButton3.CommandName = "Page";
                        linkButton3.CommandArgument = str;
                        linkButton3.CausesValidation = false;
                        tableCell.Controls.Add(linkButton3);
                    }
                    if (j3 < k2)
                    {
                        tableCell.Controls.Add(new LiteralControl("&nbsp;"));
                    }
                }
                if (i1 > k2)
                {
                    tableCell.Controls.Add(new LiteralControl("&nbsp;"));
                    LinkButton linkButton3 = new LinkButton();
                    linkButton3.Text = "...";
                    linkButton3.CommandName = "Page";
                    int k3 = k2 + 1;
                    linkButton3.CommandArgument = k3.ToString(NumberFormatInfo.InvariantInfo);
                    linkButton3.CausesValidation = false;
                    tableCell.Controls.Add(linkButton3);
                }
            }
            item.Cells.Add(tableCell);
        }

       

//        /// <summary>
//        /// 捕获回发事件
//        /// </summary>
//        /// <param name="eventArgument">命令行</param>
//        public void RaisePostBackEvent(string eventArgument)
//        {
//            int NewPageIndex=0;
//            if(PagerStyle.Position.Equals(PagerPosition.Bottom)){
//                CurrentPageIndex=Convert.ToInt32( Page.Request.Params[this.UniqueID+":numPageBottom"])-1;
//            }else{
//                CurrentPageIndex=Convert.ToInt32( Page.Request.Params[this.UniqueID+":numPageTop"])-1;
//            }
//            if("prevPage".Equals( eventArgument)){
//                NewPageIndex=CurrentPageIndex-1;
//            }else if("nextPage".Equals( eventArgument)){
//                NewPageIndex=CurrentPageIndex+1;
//            }else if(eventArgument.StartsWith("endPage" )){
//                NewPageIndex=Convert.ToInt32(eventArgument.Substring(7));
//            }else if("numPageTop".Equals( eventArgument)){
//                NewPageIndex=Convert.ToInt32( Page.Request.Params[this.UniqueID+":numPageTop"])-1;
//            }
//            else if("numPageBottom".Equals( eventArgument)){
//                NewPageIndex=Convert.ToInt32( Page.Request.Params[this.UniqueID+":numPageBottom"])-1;
//            }
//            OnPageIndexChanged(new DataGridPageChangedEventArgs(this,NewPageIndex));
//        }

        /// <summary>
        /// 将此控件呈现给指定的输出参数。
        /// </summary>
        /// <param name="output"> 要写出到的 HTML 编写器 </param>
        ///

//        protected override void Render(HtmlTextWriter output) {
//            if(IsAllowPaging){
//                AllowPaging=true;
//                PagerStyle.Visible=false;
//                myPanel.CopyBaseAttributes(this);
//                Style.Remove("POSITION");
//                Style.Remove("Z-INDEX");
//                myPanel.RenderBeginTag(output);
//                Table table=new Table();
//                table.CopyBaseAttributes(this);
//                table.BackColor=(PagerStyle.BackColor.Equals(Color.Empty))?this.BackColor:PagerStyle.BackColor;
//                table.BackImageUrl=BackImageUrl;
//                table.BorderColor=PagerStyle.BorderColor.IsEmpty?BorderColor:PagerStyle.BorderColor;
//                table.BorderStyle=PagerStyle.BorderStyle;
//                table.BorderWidth=Unit.Point(0);//(PagerStyle.BorderWidth.IsEmpty)?BorderWidth:PagerStyle.BorderWidth;
//                table.HorizontalAlign=this.HorizontalAlign;
//                table.Width=Width;
//                table.CellPadding=CellPadding;
//                table.CellSpacing=CellSpacing;
//                table.GridLines=GridLines;
//                table.Font.Size=FontUnit.Point(9);
//                TableRow tr=new TableRow();
//                table.Controls.Add(tr);
//                TableCell td=new TableCell();
//                startPage.CssClass=pageCSS;
//                startPage.Text=sStartPage;
//                prevPage.CssClass=pageCSS;
//                prevPage.Text=sPrevPage;
//                nextPage.CssClass=pageCSS;
//                nextPage.Text=sNextPage;
//                endPage.CssClass=pageCSS;
//                endPage.Text=sEndPage;
//                numPage.CssClass=pageCSS;
//                tr.Controls.Add(td);
//                td.Attributes["style"]="BORDER-TOP-STYLE: none; BORDER-RIGHT-STYLE: none; BORDER-LEFT-STYLE: none; BORDER-BOTTOM-STYLE: none";
//                td.Controls.Add(new LiteralControl("&nbsp;&nbsp;共<font color=red>"+MaxRecord+"</font>条/每页<font color=red>"+PageSize+"</font>条"));
//                td.Controls.Add(new LiteralControl("&nbsp;当前第<font color=red>"+(CurrentPageIndex+1)+"</font>页/共<font color=red>"+PageCount+"</font>页"));
//                td.Controls.Add(new LiteralControl("</td><td  style=\"BORDER-TOP-STYLE: none; BORDER-RIGHT-STYLE: none; BORDER-LEFT-STYLE: none; BORDER-BOTTOM-STYLE: none\">"));
//                if(CurrentPageIndex!=0){
//                    startPage.Attributes["href"]="javascript:"+Page.GetPostBackEventReference(this,"startPage");
//                    prevPage.Attributes["href"]="javascript:"+Page.GetPostBackEventReference(this,"prevPage");
//                    td.Controls.Add(startPage);
//                    td.Controls.Add(new LiteralControl("&nbsp;"));
//                    td.Controls.Add(prevPage);
//                    td.Controls.Add(new LiteralControl("&nbsp;"));
//                }else{
//                    td.Controls.Add(new LiteralControl("&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;"));
//                }
//                if(CurrentPageIndex<(PageCount-1)){
//                    nextPage.Attributes["href"]="javascript:"+Page.GetPostBackEventReference(this,"nextPage");
//                    endPage.Attributes["href"]="javascript:"+Page.GetPostBackEventReference(this,"endPage"+(PageCount-1));
//                    td.Controls.Add(nextPage);
//                    td.Controls.Add(new LiteralControl("&nbsp;"));
//                    td.Controls.Add(endPage);
//                    td.Controls.Add(new LiteralControl("&nbsp;"));
//                }else{
//                    td.Controls.Add(new LiteralControl("&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;"));
//                }
//                for(int i=0;i<PageCount;i++){
//                    ListItem list=new ListItem((i+1).ToString());
//                    if(i==CurrentPageIndex) list.Selected=true;
//                    numPage.Items.Add(list);
//                }
//                td.Controls.Add(new LiteralControl("</td><td align=right style=\"BORDER-TOP-STYLE: none; BORDER-RIGHT-STYLE: none; BORDER-LEFT-STYLE: none; BORDER-BOTTOM-STYLE: none\">转到第"));
//                td.Controls.Add(numPage);
//                td.Controls.Add(new LiteralControl("页"));
//                if(PagerStyle.Position==PagerPosition.Top||PagerStyle.Position==PagerPosition.TopAndBottom){
//                    numPage.ID=this.UniqueID+":numPageTop";
//                    numPage.Attributes["onchange"]=Page.GetPostBackEventReference(this,"numPageTop");
//                    table.RenderControl(output);
//                }
//                base.Render(output);
//               
//                if(PagerStyle.Position==PagerPosition.Bottom||PagerStyle.Position==PagerPosition.TopAndBottom){
//                    numPage.ID=this.UniqueID+":numPageBottom";
//                    numPage.Attributes["onchange"]=Page.GetPostBackEventReference(this,"numPageBottom");
//                    table.RenderControl(output);
//                }
//                myPanel.RenderEndTag(output);
//            }else{
//                base.Render(output);
//            }
//            EnableViewState=false;
//        }

        #endregion


    }


}

posted on 2005-06-29 11:23  kkding  阅读(2778)  评论(6编辑  收藏

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