自定义GridView控件（WebBarGridView）

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using System;
using System.Collections.Generic;
using System.Text;
using System.Web.UI.WebControls;
using System.Drawing;
using System.ComponentModel;
using System.Web.UI.HtmlControls;

namespace WebBar.Controls
{
    public class WebBarGridView : GridView
    {
        private HtmlInputCheckBox cb;
        private Button HideButton = new Button();

        [Browsable(true)]
        [Description("双击时激发")]
        public event EventHandler DblClick;

        #region 自定义属性
        [Browsable(true)]
        [Category("Appearance")]
        [Description("隔行背景色(单号行的背景)")]
        public Color SingleBackGroundColor
        {
            get
            {
                return ViewState["SingleBackGroundColor"] != null ? (Color)ViewState["SingleBackGroundColor"] : Color.Empty;
            }
            set
            {

                ViewState["SingleBackGroundColor"] = value;
            }

        }

        [Browsable(true)]
        [Category("Appearance")]
        [Description("隔行背景色(双号行的背景)")]
        public Color DoubleBackGroundColor
        {
            get
            {
                return ViewState["DoubleBackGroundColor"] != null ? (Color)ViewState["DoubleBackGroundColor"] : Color.Empty;
            }
            set
            {

                ViewState["DoubleBackGroundColor"] = value;
            }

        }

        [Browsable(true)]
        [Category("Appearance")]
        [Description("选中行背景色")]
        public Color ClickBackGroundColor
        {
            get
            {
                return ViewState["ClickBackGroundColor"] != null ? (Color)ViewState["ClickBackGroundColor"] : Color.Empty;
            }
            set
            {

                ViewState["ClickBackGroundColor"] = value;
            }

        }

        [Browsable(true)]
        [Category("Appearance")]
        [Description("鼠标经过时背景色")]
        public Color MouseOverColor
        {
            get
            {
                return ViewState["MouseOverColor"] != null ? (Color)ViewState["MouseOverColor"] : Color.Empty;
            }
            set
            {

                ViewState["MouseOverColor"] = value;
            }

        }
        [Description("双击事件后取出该行的行号")]
        public int SelectRowIndex
        {
            get
            {
                int index = -1;
                try
                {
                    HtmlInputHidden hidden = (HtmlInputHidden)this.FindControl("hdSelectedRowId");
                    index = int.Parse(hidden.Value);
                }
                catch
                {
                    index = -1;
                }
                return index;
            }
            set
            {
                try
                {
                    HtmlInputHidden hidden = (HtmlInputHidden)this.FindControl("hdSelectedRowId");
                    hidden.Value = value.ToString();
                }
                catch
                {
                    base.SelectedIndex = value;
                }
            }
        }
        #endregion

        #region 自定义方法
        /// <summary>
        /// 返回选中的选号数组
        /// </summary>
        /// <returns>string[]</returns>
        public string[] SelectRows()
        {
            string selectIndex = "";
            foreach (GridViewRow row in this.Rows)
            {
                if (row.RowType == DataControlRowType.DataRow)
                {
                    HtmlInputCheckBox cb = (HtmlInputCheckBox)row.Cells[0].FindControl("cb" + row.RowIndex.ToString());
                    if (cb == null) continue;
                    if (cb.Checked)
                    {
                        selectIndex += "," + cb.Value;
                    }
                }
            }
            if (selectIndex!="") { selectIndex = selectIndex.Substring(1); } else { return null; }
            string[] re = selectIndex.Split(char.Parse(","));
            return re;
        }
       
        protected void CreateSelectedRowItems()
        {
            if (this.Rows.Count > 0)
            {
                HtmlInputHidden hdSelectedRowId = (HtmlInputHidden)this.FindControl("hdSelectedRowId");
                if (hdSelectedRowId == null)
                {
                    hdSelectedRowId = new HtmlInputHidden();
                    hdSelectedRowId.ID = "hdSelectedRowId";
                    this.Controls.Add(hdSelectedRowId);
                }
                if (((Button)this.FindControl("HideButton")) == null)
                {
                    this.HideButton.ID = "HideButton";
                    this.HideButton.Width = 0;
                    this.Controls.Add(this.HideButton);
                }
            }
        }

        private void OnClick(object sender,EventArgs e)
        {
            try
            {
                this.DblClick(this, e);
            }
            catch
            {
            }
        }
        #endregion

        /// <summary>
        /// 重写初实化事件处理方法
        /// </summary>
        /// <param name="e"></param>
        protected override void OnInit(EventArgs e)
        {
            this.HideButton.Click += new EventHandler(this.OnClick);
            TemplateField gc = new TemplateField();
            gc.HeaderText = "<input type='checkbox' id='cbAll' onclick='checkAll(this.form);' />全选";
            this.Columns.Insert(0, gc);
            base.OnInit(e);
        }
        protected override void OnRowCreated(GridViewRowEventArgs e)
        {
            if (e.Row.RowType == DataControlRowType.DataRow)
            {
                cb = new HtmlInputCheckBox();
                cb.ID = "cb" + e.Row.RowIndex.ToString();
                cb.Value = e.Row.RowIndex.ToString();
                //cb.Attributes["onclick"] = "checkOne('" + r.ClientID.ToString() + "_cb" + r.RowIndex.ToString() + "','" + r.ClientID.ToString() + "','" + (r.RowIndex % 2).ToString() + "');";
                //cb.Attributes["onclick"] = "checkOne('" + this.ID + "_ctl" + (e.Row.RowIndex + 2).ToString("00") + "_cb" + e.Row.RowIndex.ToString() + "','" + this.ID + "_ctl" + (e.Row.RowIndex + 2).ToString("00") + "','" + (e.Row.RowIndex % 2).ToString() + "');";
                //cb.Attributes["onclick"] = "checkOne('" + this.ID + "_ctl" + (e.Row.RowIndex + 2).ToString("00") + "_cb" + e.Row.RowIndex.ToString() + "',this.parent,'" + (e.Row.RowIndex % 2).ToString() + "');";
                cb.Attributes["onclick"] = "checkOneByBoxClick(this,this.parent,'" + (e.Row.RowIndex % 2).ToString() + "');";
                e.Row.Cells[0].Controls.Add(cb);
            }
            base.OnRowCreated(e);
        }

        /// <summary>
        /// 重写行数据绑定事件处理方法
        /// </summary>
        /// <param name="e"></param>
        protected override void OnRowDataBound(GridViewRowEventArgs e)
        {

            if (SingleBackGroundColor != null)
            {
                if (e.Row.RowType == DataControlRowType.DataRow)
                {

                    if (e.Row.RowIndex != -1)
                    {
                        //e.Row.Attributes["onmouseover"] = "javascript:this.style.background='" + ColorTranslator.ToHtml(MouseOverColor) + "'";
                        //e.Row.Attributes["onmouseout"] = "onmouseoutchangestyle('" + e.Row.ClientID.ToString() + "_cb" + e.Row.RowIndex.ToString() + "','" + e.Row.ClientID.ToString() + "');";
                        //e.Row.Attributes["onclick"] = "checkOne('"+e.Row.ClientID.ToString()+"_cb"+e.Row.RowIndex.ToString()+"','"+e.Row.ClientID.ToString()+"','"+(e.Row.RowIndex % 2).ToString()+"');";
                        e.Row.Attributes["onclick"] = "checkOne('" + e.Row.ClientID.ToString() + "_cb" + e.Row.RowIndex.ToString() + "',this,'" + (e.Row.RowIndex % 2).ToString() + "');";
                        e.Row.Attributes["ondblclick"] = "dblClick('" + e.Row.RowIndex.ToString() + "','" + this.ClientID + "_hdSelectedRowId')";
                        if (e.Row.RowIndex % 2 == 0) { e.Row.BackColor = this.SingleBackGroundColor; } else { e.Row.BackColor = this.DoubleBackGroundColor; }
                        //e.Row.Attributes.Add("onClick", "javascript:__doPostBack('" + this.ClientID + "','Select$" + e.Row.RowIndex + "');");
                    }
                }
            }
            base.OnRowDataBound(e);

        }
        protected override void OnLoad(EventArgs e)
        {
            this.CreateSelectedRowItems();
            base.OnLoad(e);
        }
        protected override void OnPreRender(EventArgs e)
        {
            this.CreateSelectedRowItems();
            string js = @"<script type='text/javascript'>
                          function checkOne(checkBoxId,row,rowIndex)
                          {
                            if(document.getElementById(checkBoxId)==null){return;}
                            if(document.getElementById(checkBoxId).checked==true)
                            {
                                document.getElementById(checkBoxId).checked=false;
                                if(rowIndex=='1')
                                {
                                    row.style.backgroundColor='" + ColorTranslator.ToHtml(DoubleBackGroundColor) + @"';
                                }
                                else
                                {
                                    row.style.backgroundColor='" + ColorTranslator.ToHtml(SingleBackGroundColor) + @"';
                                }
                            }
                            else
                            {
                                document.getElementById(checkBoxId).checked=true;
                                row.style.backgroundColor='" + ColorTranslator.ToHtml(ClickBackGroundColor) + @"';
                            }
                            
                          }
                          function checkOneByBoxClick(checkBox,row,rowIndex)
                          {
                            if(checkBox==null){return;}
                            if(checkBox.checked==true)
                            {
                                checkBox.checked=false;
                               
                            }
                            else
                            {
                                checkBox.checked=true;
                            }
                            
                          }
                        function checkAll(form)
                        {
                          for (var i=0;i<form.elements.length;i++) 
                          {
                              var e = form.elements[i];
                              if (e.name != 'cbAll')
                              {
                                e.checked = form.cbAll.checked;
                              }
                          }
                        }
                        function dblClick(rowIndex,objHiddenId)
                        {
                          document.getElementById(objHiddenId).value=rowIndex;
                          __doPostBack('" + this.ID + @":HideButton','');
                        }
                        </script>";
            this.Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "ClientScript", js);
            base.OnPreRender(e);
        }
    }
}