GridView 72般绝技（二）

GridView 72般绝技（二）

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http://blog.csdn.net/21aspnet     SqlConnection 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";             else                 ViewState["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" AutoGenerateColumns="False"                         CellPadding="3" Font-Size="9pt" OnSorting="GridView1_Sorting" BackColor="White" BorderColor="#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>   4.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();     } 前台主要代码： <asp:GridView ID="GridView1" runat="server" AllowSorting="True" AutoGenerateColumns="False"                         CellPadding="3" Font-Size="9pt" BackColor="White" BorderColor="#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:TemplateField HeaderText="员工性别">                                 <ItemTemplate>                                     <asp:DropDownList ID="DropDownList1" runat="server" DataSource='<%# ddlbind()%>' DataValueField="员工性别" DataTextField="员工性别">                                     </asp:DropDownList>                                 </ItemTemplate>                             </asp:TemplateField>                             <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>