动态datagrid类

using System;
using System.Data;
using System.Collections;
using System.ComponentModel;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace IMS.Class
{
    /**//// <summary>
    /// DynamicDataGrid 的摘要说明。
    /// </summary>
    public class DynamicDataGrid
    {
        //        string DataGridName;
        string DataGridHeader;
        string PermStr;
        DataTable dt;
        DataGrid dg;
        string ModifyLinkFileName,DeleteLinkFileName,ViewLinkFlieName;
        string DataGridHeaderStr;
        int Type;
        bool Mflag=false;
        bool Dflag=false;
        public DynamicDataGrid()
        {
            //
            // TODO: 在此处添加构造函数逻辑
            //
        }
        /**//// <summary>
        /// 构造动态DataGrid
        /// </summary>
        /// <param name="DG">将改变的DataGrid</param>
        /// <param name="Headerstr">头标题,用于在界面的datagrid头标题上显示的汉字</param>
        /// <param name="Header">对应于头标题,取数据库中的各字段</param>
        /// <param name="PermissionStr">权限（字符串，以逗号分隔开）</param>
        /// <param name="dtable">绑定的数据源(DataTable)</param>
        /// <param name="LinkModifyFile">修改转向的页面的链接</param>
        /// <param name="LinkDeleteFile">删除转向的页面的链接</param>
        /// <param name="LinkViewFile">浏览转向的页面的链接</param>
        /// <param name="TypeId">int型</param>
        public DynamicDataGrid(DataGrid DG,string Headerstr,string Header,string PermissionStr,DataTable dtable,string LinkModifyFile,string LinkDeleteFile,string LinkViewFile,int TypeId)
        {
            this.dg=DG;
            //            this.dg.DataSource=null;
            this.DataGridHeader=Header;
            this.DataGridHeaderStr=Headerstr;
            this.dt=dtable;
            this.DeleteLinkFileName=LinkDeleteFile;
            this.ModifyLinkFileName=LinkModifyFile;
            this.ViewLinkFlieName=LinkViewFile;
            this.PermStr=PermissionStr;
            this.Type=TypeId;
            this.ModifyDataGrid();
            //
            // TODO: 在此处添加构造函数逻辑
            //
        }

        public DataGrid ModifyDataGrid()
        {
            //datagrid样式
            this.dg.AllowSorting=true;//允许排序
            this.dg.AllowPaging=true;//允许分页
            this.dg.PageSize=15;//每页15项
            this.dg.PagerStyle.Mode=PagerMode.NumericPages;
            this.dg.PagerStyle.BackColor=System.Drawing.Color.FromName("#AAAADD");
            this.dg.PagerStyle.HorizontalAlign=HorizontalAlign.Right;
            this.dg.AutoGenerateColumns=false;
            this.dg.BackColor=System.Drawing.Color.White;//datagrid背景色设为天蓝色
            this.dg.BorderStyle=BorderStyle.Ridge;//边框样式
            this.dg.BorderWidth=1;//DataGrid的边框宽度
            //            this.dg.CaptionAlign=TableCaptionAlign.Bottom;
            this.dg.HorizontalAlign=HorizontalAlign.Center;//datagrid相对于页面居中
            this.dg.ItemStyle.HorizontalAlign=HorizontalAlign.Left;//datagrid中文字居左对齐
            this.dg.CellPadding=5;
            this.dg.CellSpacing=1;
            this.dg.DataKeyField="Id";
            this.dg.HeaderStyle.BackColor=System.Drawing.Color.FromName("#D6DFF7");
            this.dg.HeaderStyle.HorizontalAlign=HorizontalAlign.Left;//标题居左对齐
            this.dg.HeaderStyle.Font.Bold=true;//标题字体加粗
            this.dg.HeaderStyle.Font.Size=FontUnit.XLarge;
            this.dg.AlternatingItemStyle.BackColor=System.Drawing.Color.AliceBlue;
            this.dg.ItemCreated+=new DataGridItemEventHandler(dg_ItemCreated);
            this.dg.PageIndexChanged+=new DataGridPageChangedEventHandler(dg_PageIndexChanged);
            //动态创建模板列
            string[] HeaderStr=this.DataGridHeader.Split(',');
            string[] HeaderStr1=this.DataGridHeaderStr.Split(',');
            int HeaderCount=HeaderStr.Length;
            for(int i=0;i<HeaderCount;i++)
            {
                TemplateColumn Tm=new TemplateColumn();
                Tm.ItemTemplate=new ColumnTemplate(HeaderStr[i]);
                Tm.HeaderText=HeaderStr1[i];
                this.dg.Columns.Add(Tm);
            }
            //建立查看、修改和删除列
            if(this.Type==1)
            {
                HyperLinkColumn hl=new HyperLinkColumn();
                hl.HeaderText="浏览";
                hl.Text="浏览";
                hl.ItemStyle.Width=30;
                hl.HeaderStyle.Width=30;
                this.dg.Columns.Add(hl);

            }
            else if(this.Type==0)
            {
                if(this.PermStr.IndexOf("修改")>-1)
                {
                    HyperLinkColumn hl=new HyperLinkColumn();
                    hl.HeaderText="修改";
                    hl.Text="修改";
                    hl.ItemStyle.Width=30;
                    hl.HeaderStyle.Width=30;
                    this.dg.Columns.Add(hl);
                    this.Mflag=true;
                    if(this.PermStr.IndexOf("删除")>-1)
                    {
                        HyperLinkColumn hl1=new HyperLinkColumn();
                        hl1.HeaderText="删除";
                        hl1.Text="删除";
                        hl1.ItemStyle.Width=30;
                        hl1.HeaderStyle.Width=30;
                        this.dg.Columns.Add(hl1);
                        this.Dflag=true;

                    }
                }
                else if(this.PermStr.IndexOf("删除")>-1)
                {
                    HyperLinkColumn hl=new HyperLinkColumn();
                    hl.HeaderText="删除";
                    hl.Text="删除";
                    hl.ItemStyle.Width=30;
                    hl.HeaderStyle.Width=30;
                    this.dg.Columns.Add(hl);
                    this.Dflag=true;
                }

            }
            try
            {
//                this.dg.CurrentPageIndex=0;
                this.dg.DataSource=this.dt;
                this.dg.DataBind();
                return this.dg;
            }
            catch(Exception err)
            {
                throw new Exception(err.Message);
            }

        }


        private void dg_ItemCreated(object sender, DataGridItemEventArgs e)
        {
            if ( e.Item.ItemType == ListItemType.Pager)
            {
                //Add a new Label Control
                Label lblPagerText = new Label();
                lblPagerText.Text = " | Pages --> " ;
                lblPagerText.ID = "lblPagerText1";
                lblPagerText.Font.Bold = false;
                lblPagerText.Attributes.Add("onmouseover","this.style.fontWeight='bold'");
                lblPagerText.Attributes.Add("onmouseout","this.style.fontWeight='normal'");
                //Finally add label to Pager control collection 
                if ( e.Item.Controls[0].FindControl("lblPagerText1" ) == null)
                {
                
                    e.Item.Controls[0].Controls.AddAt(0,lblPagerText);
                }
            }//end if 


            if(e.Item.ItemType==ListItemType.Item||e.Item.ItemType==ListItemType.AlternatingItem) 
            { 
                int Id=(int)this.dg.DataKeys[e.Item.ItemIndex];
                if(this.Type==1)
                    ((HyperLink)e.Item.Cells[e.Item.Cells.Count-1].Controls[0]).NavigateUrl=this.ViewLinkFlieName+"?id="+Id.ToString();
                else if(this.Type==0)
                {
                    if(this.Mflag&&this.Dflag)
                    {
                        ((HyperLink)e.Item.Cells[e.Item.Cells.Count-2].Controls[0]).NavigateUrl=this.ModifyLinkFileName+"?id="+Id.ToString();
                        ((HyperLink)e.Item.Cells[e.Item.Cells.Count-1].Controls[0]).Attributes.Add("onclick",   "return confirm('您真的要删除吗？')");
                        ((HyperLink)e.Item.Cells[e.Item.Cells.Count-1].Controls[0]).NavigateUrl=this.DeleteLinkFileName+"?id="+Id.ToString();
                    }
                    else if(this.Dflag)
                    {
                        ((HyperLink)e.Item.Cells[e.Item.Cells.Count-1].Controls[0]).Attributes.Add("onclick",   "return confirm('您真的要删除吗？')");
                        ((HyperLink)e.Item.Cells[e.Item.Cells.Count-1].Controls[0]).NavigateUrl=this.DeleteLinkFileName+"?id="+Id.ToString();
                    }
                    else if(this.Mflag)
                        ((HyperLink)e.Item.Cells[e.Item.Cells.Count-1].Controls[0]).NavigateUrl=this.ModifyLinkFileName+"?id="+Id.ToString();

                }//end if
                e.Item.Attributes.Add("onmouseover","this.style.backgroundColor='seashell'"); 
                if(e.Item.ItemType == ListItemType.Item) 
                { 
                    e.Item.Attributes.Add("onmouseout", "this.style.backgroundColor='white'"); 
                } 

                if(e.Item.ItemType ==ListItemType.AlternatingItem) 
                { 
                    e.Item.Attributes.Add("onmouseout", "this.style.backgroundColor='AliceBlue'"); 
                } 


            }//end if

        }

        private void dg_PageIndexChanged(object source, DataGridPageChangedEventArgs e)
        {
//            int count = this.dt.Rows.Count;
//            int Page=((count%this.dg.PageSize)>0)?(count/this.dg.PageSize)+1:(count/this.dg.PageSize);
//            this.dg.CurrentPageIndex=(Page>e.NewPageIndex)?e.NewPageIndex:Page;
            this.dg.CurrentPageIndex=e.NewPageIndex;
            this.dg.DataSource=this.dt;
            this.dg.DataBind();
        }
    }

    public class ColumnTemplate : ITemplate 
    { 
        //第一个模板列 
        string Str;
        public ColumnTemplate(string str)
        {

            this.Str=str;
        }
        public void InstantiateIn(Control container)       
        { 
            LiteralControl l = new LiteralControl(); 
            l.DataBinding += new EventHandler(this.OnDataBinding); 
            //数据绑定 
            container.Controls.Add(l); 
            //为模板列加入LiteralControl 
        } 

        public void OnDataBinding(object sender, EventArgs e) 
        { 
            LiteralControl l = (LiteralControl) sender;//LiteralControl发送绑定请求 
            DataGridItem container = (DataGridItem) l.NamingContainer; 
            if(((DataRowView)container.DataItem)[this.Str].ToString()=="")
                l.Text=@"&nbsp;";
            else
                l.Text = ((DataRowView)container.DataItem)[this.Str].ToString();//绑定字段 
        } 
    } 
}