1、GridView 行的多选

     

                                     
                                          
                                       
                                  
             private string GetSelIDlist()        {            string idlist = "";            bool BxsChkd = false;            for (int i = 0; i < gridView.Rows.Count; i++)            {                CheckBox ChkBxItem = (CheckBox)gridView.Rows[i].FindControl("DeleteThis");                if (ChkBxItem != null && ChkBxItem.Checked)                {                    BxsChkd = true;                    //#warning 代码生成警告：请检查确认Cells的列索引是否正确                    if (gridView.DataKeys[i].Value != null)                    {                                                idlist += gridView.DataKeys[i].Value.ToString() + ",";                    }                }            }            if (BxsChkd)            {                idlist = idlist.Substring(0, idlist.LastIndexOf(","));            }            return idlist;        }

/// 
  /// 批量删除数据  /// 
  public bool DeleteList(string Idlist )  {   StringBuilder strSql=new StringBuilder();   strSql.Append("delete from General_KnowledgePoint ");   strSql.Append(" where Id in ("+Idlist + ")  ");   int rows=DbHelperSQL.ExecuteSql(strSql.ToString());   if (rows > 0)   {    return true;   }   else   {    return false;   }  }

 方式二：

    <script type="text/JavaScript">

        function CheckBoxAll() {

            if ($("input[id*='ContentPlaceHolder1_GVListShow_chkAllProp']").attr("checked") == true) {

                $("input[id*='chkSelect']").attr("checked", true);

            }

            else {

                $("input[id*='chkSelect']").attr("checked", false);

            }

        }

    </script>

                    <asp:TemplateField HeaderText="选择">

                        <HeaderTemplate>

                            <input type="checkbox" id="chkAllProp" runat="server" οnclick="CheckBoxAll()" />全选

                        </HeaderTemplate>

                        <ItemTemplate>

                            <asp:CheckBox ID="chkSelect" runat="server" Text="选择" />

                        </ItemTemplate>

                    </asp:TemplateField>

        //取主键值

        string GetIndexKey()

        {

            string indexKey = "";

            for (int i = 0; i <= GVListShow.Rows.Count - 1; i++)

            {

                CheckBox cbox = (CheckBox)GVListShow.Rows[i].FindControl("chkSelect");

                if (cbox.Checked == true)

                {

                    if (indexKey == "")

                    {

                        indexKey = GVListShow.Rows[i].Cells[0].Text.Trim();

                    }

                    else

                    {

                        indexKey += "," + GVListShow.Rows[i].Cells[0].Text.Trim();

                    }

                }

            }

            return indexKey;

        }

相关实例：//批量删除        protected void btnDelect_Click(object sender, EventArgs e)        {            string indexKeys = GetIndexKey();            if (indexKeys != "")            {                string strWhere = string.Format("Id in ({0})", indexKeys);                DotNet.BLL.Web_Article BLL = new DotNet.BLL.Web_Article();                if (1 <= BLL.DeleteWhere(strWhere, null))                {                    Web_ArticleBind();                }            }        }        protected void btnTop_Click(object sender, EventArgs e)        {            string indexKeys = GetIndexKey();            if (indexKeys != "")            {                DotNet.BLL.Web_Article BLL = new DotNet.BLL.Web_Article();                int maxTopNum = 0;                string strGetWhere = "ComanyId = " + USER.SchoolId;                object selMaxTopNum = BLL.GetSingle("Max(OrderNum)", strGetWhere, null);                string strWhere = string.Format("Id in ({0})", indexKeys);                if (selMaxTopNum != null)                {                    maxTopNum = int.Parse(selMaxTopNum.ToString()) + 1;                    if (1 <= BLL.Update("OrderNum = " + maxTopNum, strWhere, null))                    {                        Web_ArticleBind();                    }                }            }        }        protected void btnCancelTop_Click(object sender, EventArgs e)        {            string indexKeys = GetIndexKey();            if (indexKeys != "")            {                DotNet.BLL.Web_Article BLL = new DotNet.BLL.Web_Article();                int maxTopNum = 0;                //object selMaxTopNum = BLL.GetSingle("Max(top_num)", "", null);                string strWhere = string.Format("Id in ({0})", indexKeys);                if (1 <= BLL.Update("OrderNum = " + maxTopNum, strWhere, null))                {                    Web_ArticleBind();                }            }        }        //审核新闻        protected void btnPass_Click(object sender, EventArgs e)        {            string indexKeys = GetIndexKey();            if (indexKeys != "")            {                DotNet.BLL.Web_Article BLL = new DotNet.BLL.Web_Article();                string strWhere = string.Format("Id in ({0})", indexKeys);                if (1 <= BLL.Update("StateNum = 2,StateName='已审核' ", strWhere, null))                {                    //Response.Redirect(Request.Url.ToString());                    Web_ArticleBind();                }            }        }        //取消审核        protected void btnUnpass_Click(object sender, EventArgs e)        {            string indexKeys = GetIndexKey();            string strUpdate = "SavedOn=getdate()";            if (indexKeys != "")            {                DotNet.BLL.Web_Article BLL = new DotNet.BLL.Web_Article();                string strWhere = string.Format("Id in ({0})", indexKeys);                if (1 <= BLL.Update(strUpdate+",StateNum = 1,StateName='未审核'", strWhere, null))                {                    //Web_NewsBind();                    //Response.Redirect(Request.Url.ToString());                    Web_ArticleBind();                }            }        }        //转移新闻栏目        protected void btnChangeCategory_Click(object sender, EventArgs e)        {            if (DdlCategoryIdNew.SelectedValue.Trim() == "0")            {                DotNet.Common.MessageBox.Show(this, "请选择栏目");                return;            }            string indexKeys = GetIndexKey();            if (indexKeys != "")            {                DotNet.BLL.Web_Article BLL = new DotNet.BLL.Web_Article();                string strField = "CategoryId = @CategoryId,CategoryName = @CategoryName";                Hashtable ht = new Hashtable();                ht.Add("@CategoryId", DdlCategoryIdNew.SelectedValue.Trim());                ht.Add("@CategoryName", DdlCategoryIdNew.SelectedItem.Text.Trim());                string strWhere = string.Format("Id in ({0})", indexKeys);                if (1 <= BLL.Update(strField, strWhere, ht))                {                    Web_ArticleBind();                }            }        }