72绝技

1.GridView无代码分页排序：效果图：1.AllowSorting设为True，aspx代码中是AllowSorting="True"；2.默认1页10条，如果要修改每页条数，修改PageSize即可，在aspx代码中是PageSi ze="12"。

3.默认的是单向排序的，右击GridView弹出“属性”，选择AllowSorting为True即可。

2.GridView选中，编辑，取消，删除：效果图：后台代码：你可以使用sqlhelper,本文没用。

代码如下：using System;using System.Data;using System.Configuration;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using System.Data.SqlClient;public partial class _Default : System.Web.UI.Page{//清清月儿/21aspnetSqlConnection sqlcon;SqlCommand sqlcom;string strCon = "Data Source=(local);Database=数据库名;Uid=帐号;Pwd=密码"; protected void Page_Load(object sender, EventArgs e){if (!IsPostBack){bind();}}protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e) {GridView1.EditIndex = e.NewEditIndex;bind();}//删除protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e) {string sqlstr = "delete from 表where id='" + GridView1.DataKeys[e.RowIndex].Value. ToString() + "'";sqlcon = new SqlConnection(strCon);sqlcom = new SqlCommand(sqlstr,sqlcon);sqlcon.Open();sqlcom.ExecuteNonQuery();sqlcon.Close();bind();}//更新protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e) {sqlcon = new SqlConnection(strCon);string sqlstr = "update 表set 字段1='"+ ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',字段2='"+ ((TextBox)(GridView1.Rows[e.RowIndex].Cells[2].Controls[0])).Text.ToString().Trim() + "',字段3='"+ ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim()+ "' where id='"+ GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";sqlcom=new SqlCommand(sqlstr,sqlcon);sqlcon.Open();sqlcom.ExecuteNonQuery();sqlcon.Close();GridView1.EditIndex = -1;bind();}//取消protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEvent Args e){GridView1.EditIndex = -1;bind();}//绑定public void bind(){string sqlstr = "select * from 表";sqlcon = new SqlConnection(strCon);SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);DataSet myds = new DataSet();sqlcon.Open();myda.Fill(myds, "表");GridView1.DataSource = myds;GridView1.DataKeyNames = new string[] { "id" };//主键GridView1.DataBind();sqlcon.Close();}}前台主要代码：... ...<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPad ding="4"ForeColor="#333333" GridLines="None" OnRowDeleting="GridView1_RowDeleting" O nRowEditing="GridView1_RowEditing"OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCa ncelingEdit"><FooterStyle BackColor="#990000" Font-Bold="True" ForeColor="White" /><Columns><asp:BoundField DataField="身份证号码" HeaderText="用户ID" ReadOnly="True" /> <asp:BoundField DataField="姓名" HeaderText="用户姓名" /><asp:BoundField DataField="员工性别" HeaderText="性别" /><asp:BoundField DataField="家庭住址" HeaderText="家庭住址" /><asp:CommandField HeaderText="选择" ShowSelectButton="True" /><asp:CommandField HeaderText="编辑" ShowEditButton="True" /><asp:CommandField HeaderText="删除" ShowDeleteButton="True" /></Columns><RowStyle ForeColor="#000066" /><SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" /> <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" /><HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" /></asp:GridView>3.GridView正反双向排序：效果图：点姓名各2次的排序，点其他也一样可以。

后台代码：using System;using System.Data;using System.Configuration;using System.Collections;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using System.Data.SqlClient;public partial class Default3 : System.Web.UI.Page{//清清月儿的博客/21aspnetSqlConnection sqlcon;string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd="; protected void Page_Load(object sender, EventArgs e){if (!IsPostBack){ViewState["SortOrder"] = "身份证号码";ViewState["OrderDire"] = "ASC";bind();}}protected void GridView1_Sorting(object sender, GridViewSortEventArgs e) {string sPage = e.SortExpression;if (ViewState["SortOrder"].ToString() == sPage){if (ViewState["OrderDire"].ToString() == "Desc")ViewState["OrderDire"] = "ASC";elseViewState["OrderDire"] = "Desc";}else{ViewState["SortOrder"] = e.SortExpression;}bind();}public void bind(){string sqlstr = "select top 5 * from 飞狐工作室";sqlcon = new SqlConnection(strCon);SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);DataSet myds = new DataSet();sqlcon.Open();myda.Fill(myds, "飞狐工作室");DataView view = myds.Tables["飞狐工作室"].DefaultView;string sort = (string)ViewState["SortOrder"] + " " + (string)ViewState["OrderDire"]; view.Sort = sort;GridView1.DataSource = view;GridView1.DataBind();sqlcon.Close();}}前台主要代码：<asp:GridView ID="GridView1" runat="server" AllowSorting="True" AutoGenerateColu mns="False"CellPadding="3" Font-Size="9pt" OnSorting="GridView1_Sorting" BackColor="White" B orderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px"><FooterStyle BackColor="White" ForeColor="#000066" /><Columns><asp:BoundField DataField="身份证号码" HeaderText="用户ID" SortExpression="身份证号码" /><asp:BoundField DataField="姓名" HeaderText="用户姓名" SortExpression="姓名"/> <asp:BoundField DataField="员工性别" HeaderText="性别" SortExpression="员工性别" /><asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址"/></Columns><RowStyle ForeColor="#000066" /><SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" /><PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" /><HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" /> </asp:GridView>GridView和下拉菜单DropDownList结合：效果图：后台代码：using System;using System.Data;using System.Configuration;using System.Collections;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using System.Data.SqlClient;public partial class Default4 : System.Web.UI.Page{SqlConnection sqlcon;string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa"; protected void Page_Load(object sender, EventArgs e){DropDownList ddl;if (!IsPostBack){string sqlstr = "select top 5 * from 飞狐工作室";sqlcon = new SqlConnection(strCon);SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);DataSet myds = new DataSet();sqlcon.Open();myda.Fill(myds, "飞狐工作室");GridView1.DataSource = myds;GridView1.DataBind();for (int i = 0; i <= GridView1.Rows.Count - 1; i++){DataRowView mydrv = myds.Tables["飞狐工作室"].DefaultView[i];if (Convert.ToString(mydrv["员工性别"]).Trim() == "True"){ddl = (DropDownList)GridView1.Rows[i].FindControl("DropDownList1"); ddl.SelectedIndex = 0;}if (Convert.ToString(mydrv["员工性别"]).Trim() == "False"){ddl = (DropDownList)GridView1.Rows[i].FindControl("DropDownList1"); ddl.SelectedIndex = 1;}}sqlcon.Close();}}public SqlDataReader ddlbind(){string sqlstr = "select distinct 员工性别from 飞狐工作室";sqlcon = new SqlConnection(strCon);SqlCommand sqlcom = new SqlCommand(sqlstr, sqlcon);sqlcon.Open();return sqlcom.ExecuteReader();}。