GridView用法详解

1. 前台页面：

   Default.aspx

　　

 <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

 <!DOCTYPE html>

 <html xmlns="http://www.w3.org/1999/xhtml">
 <head runat="server">
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
     <title>GridView用法</title>
 </head>
 <body>
     <form id="form1" runat="server">
     <div>
            <asp:GridView ID="gvUserInfo" runat="server"  AllowPaging="True" PageSize="" OnSorting="gvUserInfo_Sorting" AllowSorting="true" AutoGenerateEditButton="true" OnRowDataBound="gvUserInfo_RowDataBound" OnRowEditing="gvUserInfo_RowEditing"  OnRowUpdating="gvUserInfo_RowUpdating" OnRowCancelingEdit="gvUserInfo_RowCancelingEdit" OnPageIndexChanging="gvUserInfo_PageIndexChanging" OnRowDeleting="gvUserInfo_RowDeleting" EnableModelValidation="True" CellPadding="" ForeColor="#333333" GridLines="None" >
              <AlternatingRowStyle BackColor="White" ForeColor="#284775" />
             <Columns>
   <%--                    ！！！  DataNavigateUrlFields属性是获取或设置数据源中字段的名称，用于为其超链接构造URL，其字段名称应为GridView中的数据字段名
       --%>        

                 <asp:HyperLinkField  NavigateUrl="Info.aspx" DataNavigateUrlFields="用户编号" DataNavigateUrlFormatString="Info.aspx?userId={0}" Target="_blank" Text="详细信息"/>
                <asp:TemplateField>
                     <ItemTemplate>
                         <asp:Button ID="btnDelete" runat="server"  CommandName="Delete"  Text="删除" CausesValidation="false" OnClientClick="return confirm('确定删除？')"  >
                         </asp:Button>
                     </ItemTemplate>
                 </asp:TemplateField>
             </Columns>
             <EditRowStyle BackColor="#999999" />
             <FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
             <HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
             <PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />
             <RowStyle BackColor="#F7F6F3" ForeColor="#333333" />
             <SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />
         </asp:GridView>
     </div>
     </form>
 </body>
 </html>

info.aspx

 <%@ Page Language="C#" AutoEventWireup="true" CodeFile="info.aspx.cs" Inherits="info" %>

 <!DOCTYPE html>

 <html xmlns="http://www.w3.org/1999/xhtml">
 <head runat="server">
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
     <title>用户详细信息</title>
 </head>
 <body>
     <form id="form1" runat="server">
     <div>
     <asp:Table runat="server" Caption="用户信息" >
         <asp:TableRow>
             <asp:TableCell>用户编号：</asp:TableCell>
             <asp:TableCell>
                 <asp:Label ID="lblUserId" runat="server" Text=""></asp:Label></asp:TableCell>
         </asp:TableRow>
         <asp:TableRow>
             <asp:TableCell>性别：</asp:TableCell>
             <asp:TableCell><asp:Label ID="lblSex" runat="server" Text=""></asp:Label></asp:TableCell>
         </asp:TableRow>
         <asp:TableRow>
             <asp:TableCell>邮箱：</asp:TableCell>
             <asp:TableCell><asp:Label ID="lblMail" runat="server" Text=""></asp:Label></asp:TableCell>
         </asp:TableRow>
     </asp:Table>
         <asp:Button ID="btnExit" runat="server" Text="关闭窗口"  OnClientClick="javascript:window.opener=null;window.close();"/>
     </div>
     </form>
 </body>
 </html>

1. 后台页面：

   Default.aspx.cs

 using System;
 using System.Collections.Generic;
 using System.Web;
 using System.Web.UI;
 using System.Web.UI.WebControls;
 using System.Data;
 using System.Data.SqlClient;

 public partial class _Default : System.Web.UI.Page
 {
     protected void Page_Load(object sender, EventArgs e)
     {
         if (!IsPostBack)
         {
             ViewState["SortOrder"] = "用户编号";
             ViewState["OrderDir"] = "DESC";
             dataBind();
         }
     }

     /// <summary>
     ///   绑定数据库中的数据到GridView控件中
     /// </summary>
     protected void dataBind()
     {
         string conStr = System.Configuration.ConfigurationManager.ConnectionStrings["ConStr"].ToString();
         SqlConnection conn = new SqlConnection(conStr);
         if (conn.State == ConnectionState.Closed)
         {
             conn.Open();
         }
        // string strSql = "select userId,userName  from tabUserInfo";
         string strSql = "select userId as 用户编号,userName as 用户名  from tabUserInfo";
         SqlDataAdapter da = new SqlDataAdapter(strSql, conn);
         DataSet ds = new DataSet();
         da.Fill(ds, "tabUserInfo");

         string sort = (string)ViewState["SortOrder"] + " " + (string)ViewState["OrderDir"];
         DataView view = ds.Tables["tabUserInfo"].DefaultView;
         view.Sort = sort;

         gvUserInfo.DataSource = view;
         gvUserInfo.DataKeyNames = new string[]{"用户编号"};
         gvUserInfo.DataBind();

         //对特定数据用特定的显示方式
         for (int i = ; i < gvUserInfo.Rows.Count; i++)
         {
             DataRowView myDrv = ds.Tables["tabUserInfo"].DefaultView[i];
             string id = myDrv["用户编号"].ToString();
             if (Convert.ToInt32(id) < )
             {
                 gvUserInfo.Rows[i].Cells[].BackColor = System.Drawing.Color.Red;
             }
         }
         if (conn.State == ConnectionState.Open)
         {
             conn.Close();
         }
     }

     /// <summary>
     /// 实现分页功能
     /// </summary>
     /// <param name="sender"></param>
     /// <param name="e"></param>
     protected void gvUserInfo_PageIndexChanging(object sender, GridViewPageEventArgs e)
     {
         gvUserInfo.PageIndex = e.NewPageIndex;
         dataBind();
     }

     /// <summary>
     /// 删除GridView中数据
     /// </summary>
     /// <param name="sender"></param>
     /// <param name="e"></param>
     protected void gvUserInfo_RowDeleting(object sender, GridViewDeleteEventArgs e)
     {
         SqlConnection conn = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["ConStr"].ToString());
         string strSql = "delete from tabUserInfo where userId=" +gvUserInfo.DataKeys[e.RowIndex].Value.ToString()+ "";
         conn.Open();
         SqlCommand cmd = new SqlCommand(strSql, conn);
         if (cmd.ExecuteNonQuery() > )
             Response.Write("<script>alert('删除成功!')</script>");
         else
             Response.Write("<script>alert('删除失败!')</script>");
         conn.Close();
         dataBind();
     }
     /// <summary>
     /// 编辑GridView中的数据
     /// </summary>
     /// <param name="sender"></param>
     /// <param name="e"></param>
     protected void gvUserInfo_RowEditing(object sender, GridViewEditEventArgs e)
     {
         gvUserInfo.EditIndex = e.NewEditIndex;
         dataBind();
     }
     /// <summary>
     ///更改数据并提交到数据库
     /// </summary>
     /// <param name="sender"></param>
     /// <param name="e"></param>
     protected void gvUserInfo_RowUpdating(object sender, GridViewUpdateEventArgs e)
     {
         string conStr = System.Configuration.ConfigurationManager.ConnectionStrings["ConStr"].ToString();
         SqlConnection conn = new SqlConnection(conStr);
         string strSql = "update tabUserInfo set userName='" + ((TextBox)(gvUserInfo.Rows[e.RowIndex].Cells[].Controls[])).Text.ToString().Trim() + "' where userId=" + gvUserInfo.DataKeys[e.RowIndex].Value.ToString() + "";
         //
         conn.Open();
         SqlCommand cmd = new SqlCommand(strSql, conn);
         cmd.ExecuteNonQuery();
         Response.Write("<script>alert('更改成功！')</script>");
         conn.Close();
         gvUserInfo.EditIndex = -;
         dataBind();
     }
     /// <summary>
     /// 取消对GridView中数据的编辑
     /// </summary>
     /// <param name="sender"></param>
     /// <param name="e"></param>
     protected void gvUserInfo_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
     {
         gvUserInfo.EditIndex = -;
         dataBind();
     }
     /// <summary>
     /// RowDataBound事件
     /// </summary>
     /// <param name="sender"></param>
     /// <param name="e"></param>
     protected void gvUserInfo_RowDataBound(object sender, GridViewRowEventArgs e)
     {
         //高亮显示鼠标指定行数据
         if (e.Row.RowType == DataControlRowType.DataRow)
         {
             e.Row.Attributes.Add("onMouseOver", "Color=this.style.backgroundColor;this.style.backgroundColor='lightblue'");
             e.Row.Attributes.Add("onMouseOut", "this.style.backgroundColor=Color;");
         }
     }
     /// <summary>
     /// 排序代码
     /// </summary>
     /// <param name="sender"></param>
     /// <param name="e"></param>
     protected void gvUserInfo_Sorting(object sender, GridViewSortEventArgs e)
     {
         string strPage = e.SortExpression;
         if (ViewState["SortOrder"].ToString() == strPage)
         {
             if (ViewState["OrderDir"].ToString() == "DESC")
             {
                 ViewState["OrderDir"] = "ASC";
             }
             else
             {
                 ViewState["OrderDir"] = "DESC";
             }
         }
         else
         {
             ViewState["SortOrder"] = e.SortExpression;
         }
         dataBind();
     }
 }

info.aspx.cs

 using System;
 using System.Collections.Generic;
 using System.Web;
 using System.Web.UI;
 using System.Web.UI.WebControls;
 using System.Data;
 using System.Data.SqlClient;

 public partial class info : System.Web.UI.Page
 {
     protected void Page_Load(object sender, EventArgs e)
     {
         if (!IsPostBack)
         {
             dataBind();
         }
     }

     protected void dataBind()
     {
         string conStr=System.Configuration.ConfigurationManager.ConnectionStrings["ConStr"].ToString();
         SqlConnection conn = new SqlConnection(conStr);
         if (conn.State == ConnectionState.Closed)
         {
             conn.Open();
         }
         string strSql = "select * from tabUserInfo where userId="+Request["userId"].ToString()+";";
         SqlDataAdapter da = new SqlDataAdapter(strSql, conn);
         DataSet ds = new DataSet();
         da.Fill(ds, "tabInfo");
         DataRowView rowView = ds.Tables["tabInfo"].DefaultView[];
         lblUserId.Text = Convert.ToString(rowView["userId"]);
         lblSex.Text = Convert.ToString(rowView["userSex"]);
         lblMail.Text = Convert.ToString(rowView["userMail"]);

         if (conn.State == ConnectionState.Open)
         {
             conn.Close();
         }
     }
 }