几乎集Girdview所有技术为一体的超级变形金刚

全部由后台cs代码实现GirdView的各种功能，实现了GridView的所有事件：



1.GridView动态创建控件，而且回发不会消失，绑定事件依然有效。

2.分页，动态添加页脚页码控件，且绑定事件

3.在最合适的地方动态注册添加js事件

4.实现删除、编辑、插入、查找、更新"、取消、新建、选择等事件

5.动态创建模板列，含编辑模板列

6.自定义点击表头排序

7.最合适的地方动态添加css样式

<asp:GridView ID="GridView1" runat="server"
    OnRowUpdating="GridView1_RowUpdating" 
    onrowcancelingedit="GridView1_RowCancelingEdit" 
    onrowediting="GridView1_RowEditing"
    onsorting="GridView1_Sorting" AllowSorting="True" 
    ondatabound="GridView1_DataBound" onrowdatabound="GridView1_RowDataBound" 
    onsorted="GridView1_Sorted" AutoGenerateColumns="false"
    ondatabinding="GridView1_DataBinding" oninit="GridView1_Init" 
    onload="GridView1_Load" onrowupdated="GridView1_RowUpdated" 
    ondisposed="GridView1_Disposed" onpageindexchanged="GridView1_PageIndexChanged" 
    onpageindexchanging="GridView1_PageIndexChanging" 
    onprerender="GridView1_PreRender" onrowcommand="GridView1_RowCommand" 
    onrowcreated="GridView1_RowCreated" onrowdeleted="GridView1_RowDeleted" 
    onrowdeleting="GridView1_RowDeleting" 
    onselectedindexchanged="GridView1_SelectedIndexChanged" 
    onselectedindexchanging="GridView1_SelectedIndexChanging" 
    onunload="GridView1_Unload" AllowPaging="True" PageSize="3" >
</asp:GridView>

cs文件代码

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

namespace a.b.c
{
    public partial class Default2 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
        }

        protected void GridView1_Init(object sender, EventArgs e)
        {
            DataTable dt = new DataTable("ttt");
            dt.Columns.Add("c1");
            dt.Columns.Add("c2", typeof(int));
            dt.Columns.Add("c3");
            dt.Rows.Add("1", 11, "r1811");
            dt.Rows.Add("2", 21, "rkey2");
            dt.Rows.Add("3", 1131, "r1113");
            dt.Rows.Add("4", 41, "r1181");
            dt.Rows.Add("5", 51, "rkey22");
            dt.Rows.Add("6", 613, "r11413");
            dt.Rows.Add("7", 71, "r1115");
            ViewState["dt"] = dt;

            GridView gv = (GridView)sender;
            int index = -1;
            foreach (DataColumn dc in dt.Columns)
            {
                BoundField bf = new BoundField();
                bf.HeaderText = dc.ColumnName;
                bf.DataField = dc.ColumnName;
                bf.SortExpression = dc.ColumnName;
                gv.Columns.Insert(++index, bf);
            }
            TemplateField tf = new TemplateField();
            tf.ItemTemplate = new GridViewTemplate(DataControlRowType.DataRow, "编辑", false) { eddhander=new EventHandler(btn_Click)};
            tf.EditItemTemplate = new GridViewTemplate(DataControlRowType.DataRow, "更新", true);
            gv.Columns.Add(tf);

            CommandField cd = new CommandField();
            cd.HeaderText = "综合操作";
            cd.InsertText = "插入";
            cd.DeleteText = "删除";
            cd.EditText = "编辑";
            cd.SelectText = "查找";
            cd.UpdateText = "更新";
            cd.CancelText = "取消";
            cd.NewText = "新建";
            cd.SelectText = "选择";
            cd.ButtonType = ButtonType.Button;
            cd.ShowInsertButton = cd.ShowDeleteButton = cd.ShowEditButton = cd.ShowSelectButton = cd.ShowCancelButton = cd.ShowSelectButton = true;
            gv.Columns.Add(cd);

        }
        void btn_Click(object sender, EventArgs e)//自定义按钮事件
        {
            Response.Write(DateTime.Now.ToString());
        }
        protected void GridView1_Load(object sender, EventArgs e)
        {
            GridView gv = (GridView)sender;
            if (!IsPostBack)
            {
                gv.DataBind();
            }
        }
        protected void GridView1_DataBinding(object sender, EventArgs e)
        {
            GridView gv = (GridView)sender;
            DataTable dt = ViewState["dt"] as DataTable;
            DataCount = dt.Rows.Count;

            DataView dv = new DataView(dt);
            if (ViewState["sortstr"] != null && ViewState["sortstr"].ToString().Length > 0)
                dv.Sort = ViewState["sortstr"].ToString();

            gv.DataKeyNames = new[] { "c1" };
            gv.DataSource = dv;

        }
        protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e)
        {
            if (e.Row.RowType == DataControlRowType.DataRow)
            {
                e.Row.Attributes.Add("onmouseover", "this.style.backgroundColor='teal'");
                e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor=''");

                foreach (DataControlFieldCell fc in e.Row.Cells)
                    foreach (Control c in fc.Controls)
                        if (c is Button && (c as Button).CommandName == "Delete")
                            (c as Button).Attributes.Add("onclick", "if(!confirm('您确定删除该项吗?')) return;");
            }
            else if (e.Row.RowType == DataControlRowType.Footer)
            {
                GridView gv = (GridView)sender;
                DropDownList dp = new DropDownList();
                for (int i = 0; i < gv.PageCount; i++)
                    dp.Items.Add(new ListItem((i + 1).ToString(), i.ToString()));
                dp.AutoPostBack = true;
                dp.SelectedIndexChanged += new EventHandler(dp_SelectedIndexChanged);
                dp.SelectedValue = gv.PageIndex.ToString();
                e.Row.Cells[0].Controls.Add(dp);
            }
            //引发GridView1_RowDataBound
        }
        protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
        {
            if (e.Row.RowType == DataControlRowType.DataRow)
            {
                //下面的代码可以写在GridView1_RowCreated中
                //e.Row.Attributes.Add("onmouseover", "this.style.backgroundColor='red'");
                //e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor=''");

                foreach (TableCell tc in e.Row.Cells)
                    if (tc.Text.Contains("key"))
                        tc.Text = tc.Text.Replace("key", "<font color=red>key</font>");
                //tc.Attributes.Add("style","color:red");
            }
        }
        protected void GridView1_DataBound(object sender, EventArgs e)
        {
            //在绑定完所有数据后触发
            GridView gv = (GridView)sender;
            int count = gv.Rows.Count;
            if (count > 0 && count % gv.PageSize > 0)
                for (int i = 0; i < gv.PageSize - count % gv.PageSize; i++)
                {
                    //dt.Rows.Add(dt.NewRow());
                    GridViewRow row = new GridViewRow(-1, -1, DataControlRowType.DataRow, DataControlRowState.Normal);
                    for (int j = 0; j < gv.Rows[0].Cells.Count; j++)
                    {
                        TableCell cell = new TableCell();
                        cell.Text = " ";
                        row.Cells.Add(cell);
                    }
                    gv.FooterRow.Controls[0].Controls.Add(row);
                }
        }
        protected void GridView1_PreRender(object sender, EventArgs e)
        {
            GridView gv = (GridView)sender;
            gv.Attributes.Add("style", "border:solid 2px yellow");
            //可以注册js到客户端
            //客户端脚本,响应网页的onunload事件
            //this.ClientScript.RegisterClientScriptBlock(this.GetType(), "unload", "<SCRIPT event='onunload' for='window'>alert('页面卸载');</SCRIPT>");

        }
        protected void GridView1_Unload(object sender, EventArgs e)
        {
            ViewState.Remove("dt");
        }
        protected void GridView1_Disposed(object sender, EventArgs e)
        {
            //XXXXX.Dispose();
        }
        protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
        {
            GridView gv = (GridView)sender;
            gv.AllowSorting = false;
            gv.EditIndex = e.NewEditIndex;
            gv.DataBind();
        }
        protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
        {
            DataTable dt = ViewState["dt"] as DataTable;
            dt.Rows[e.RowIndex]["c1"] = (GridView1.Rows[e.RowIndex].Cells[0].Controls[0] as TextBox).Text;
            dt.Rows[e.RowIndex]["c2"] = (GridView1.Rows[e.RowIndex].Cells[1].Controls[0] as TextBox).Text;
            dt.Rows[e.RowIndex]["c3"] = (GridView1.Rows[e.RowIndex].Cells[2].Controls[0] as TextBox).Text;
            ViewState["dt"] = dt;

            GridView gv = (GridView)sender;
            gv.AllowSorting = true;
            gv.EditIndex = -1;
            gv.DataBind();
        }
        protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
        {
            GridView gv = (GridView)sender;
            gv.AllowSorting = true;
            gv.EditIndex = -1;
            gv.DataBind();
        }
        protected void GridView1_RowUpdated(object sender, GridViewUpdatedEventArgs e)
        {
            //e.KeepInEditMode = false;
            //在没有绑定DataSourceID的情况下，暂时确定为不会触发        
        }
        protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
        {
            DataTable dt = ViewState["dt"] as DataTable;
            dt.Rows[e.RowIndex].Delete();
            ViewState["dt"] = dt;

            GridView gv = (GridView)sender;
            gv.DataBind();
        }
        protected void GridView1_RowDeleted(object sender, GridViewDeletedEventArgs e)
        {
            //在没有绑定DataSourceID的情况下，暂时确定为不会触发  
        }
        protected void GridView1_SelectedIndexChanging(object sender, GridViewSelectEventArgs e)
        {
            GridView gv = (GridView)sender;
            gv.SelectedIndex = e.NewSelectedIndex;
        }
        protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
        {
            GridView gv = (GridView)sender;
            gv.PageIndex = e.NewPageIndex;
        }
        protected void GridView1_PageIndexChanged(object sender, EventArgs e)
        {
            //分页事件，绑定数据
            GridView gv = (GridView)sender;
            gv.DataBind();
        }
        protected void dp_SelectedIndexChanged(object sender, EventArgs e)
        {
            DropDownList dp = (DropDownList)sender;
            GridView1.PageIndex = int.Parse(dp.SelectedValue);
            //GridView1.EditIndex = -1;
            GridView1.DataBind();
        }
        protected void GridView1_SelectedIndexChanged(object sender, EventArgs e)
        {
            GridView gv = (GridView)sender;
            foreach (GridViewRow r in gv.Rows)
                r.Font.Size = r.RowIndex == gv.SelectedIndex ? new FontUnit(16) : new FontUnit(12);

        }
        protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
        {
            GridView gv = (GridView)sender;//或者 GridView gv = (GridView)e.CommandSource;
        }
        protected void GridView1_Sorting(object sender, GridViewSortEventArgs e)
        {
            //Type t = sender.GetType();
            //BindingFlags flag = BindingFlags.NonPublic | BindingFlags.Instance;
            //t.GetProperty("SortExpressionInternal", flag).SetValue(sender, e.SortExpression, null);
            //t.GetProperty("SortDirectionInternal", flag).SetValue(sender, e.SortDirection, null);
            SortOrder = SortOrder == "asc" ? "desc" : "asc";
            SortColumn = e.SortExpression;
            ViewState["sortstr"] = SortColumn + " " + SortOrder;

            GridView gv = (GridView)sender;
            gv.DataBind();

        }
        protected void GridView1_Sorted(object sender, EventArgs e)
        {
            GridView gv = (GridView)sender;
            for (int i = 0; i < gv.Columns.Count; i++)
                if (gv.Columns[i].SortExpression == SortColumn)
                    gv.HeaderRow.Cells[i].Controls.Add(new Literal() { Text = SortOrder == "asc" ? "↑" : "↓" });
        }
        int DataCount
        {
            get
            {
                var obj = ViewState["DataCount"];
                if (obj != null)
                    return (int)obj;
                return 0;
            }
            set
            {
                ViewState["DataCount"] = value;
            }
        }
        string SortOrder
        {
            get
            {
                var obj = ViewState["SortOrder"];
                if (obj != null)
                    return (string)obj;
                return "asc";
            }
            set
            {
                ViewState["SortOrder"] = value;
            }
        }
        string SortColumn
        {
            get
            {
                var obj = ViewState["SortColumn"];
                if (obj != null)
                    return (string)obj;
                return string.Empty;
            }
            set
            {
                ViewState["SortColumn"] = value;
            }
        }
        protected void Button1_Click(object sender, EventArgs e)
        {
            
        }
        protected void LinkButton1_Click(object sender, EventArgs e)
        {
            Response.Write(DateTime.Now.ToString());
        }
}
    public class GridViewTemplate : ITemplate
    {
        private DataControlRowType templateType;
        private string columnName;
        bool IsEditTemplate;
        public EventHandler eddhander;
        public GridViewTemplate(DataControlRowType type, string colname, bool _IsEditTemplate)
        {
            templateType = type;
            columnName = colname;
            IsEditTemplate = _IsEditTemplate;
        }

        public void InstantiateIn(System.Web.UI.Control container)
        {
            switch (templateType)
            {
                case DataControlRowType.Header:
                    Literal lc = new Literal();
                    lc.Text = columnName;
                    container.Controls.Add(lc);
                    break;
                case DataControlRowType.DataRow:
                    if (IsEditTemplate)
                    {
                        Button btn1 = new Button();
                        btn1.CausesValidation = true;
                        btn1.CommandName = "Update";
                        btn1.Text = "更新";

                        Button btn2 = new Button();
                        btn2.CausesValidation = false;
                        btn2.CommandName = "Cancel";
                        btn2.Text = "取消";

                        container.Controls.Add(btn1);
                        container.Controls.Add(btn2);
                    }
                    else
                    {

                        Button btn3 = new Button();
                        btn3.CausesValidation = false;
                        btn3.CommandName = "Edit";
                        btn3.Text = "编辑";

                        Button mmm = new Button();
                        mmm.Click += eddhander;//添加事件
                        mmm.Text = "我自定义的按钮，可输出时间";

                        container.Controls.Add(mmm);
                        container.Controls.Add(btn3);
                    }
                    break;
                default:
                    break;
            }
        }
    }
}