ASP.NET GridView用法（二） 模板，脚注，排序，编辑，删除，多选，分页，添加
2017-12-03 11:18
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这个例子是一个 图书管理的gridview. 项目地址：https://gitee.com/qiuyuhan/gridviewbookinfo
数据库：
如果要用脚注，基本每一项都需要改用模板的形式。
WebForm1.aspx
Web.Config
bookinfo.cs
运行效果：
数据库：
如果要用脚注，基本每一项都需要改用模板的形式。
WebForm1.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="gridview书籍管理.WebForm1" %>
<!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></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView runat="server" ID="gridview1" AllowPaging="True" AutoGenerateColumns="False" OnPageIndexChanging="gridview1_PageIndexChanging" ShowFooter="True" OnRowEditing="gridview1_RowEditing" OnRowCancelingEdit="gridview1_RowCancelingEdit" OnRowDataBound="gridview1_RowDataBound" OnRowUpdating="gridview1_RowUpdating" OnRowDeleting="gridview1_RowDeleting" AllowSorting="True" OnSorting="gridview1_Sorting" >
<Columns>
<asp:TemplateField HeaderText="书籍Id" SortExpression="Id" >
<ItemTemplate>
<asp:Label runat="server" ID="lbid" Text='<%# Eval("Id") %>' />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="书籍名称" SortExpression="Title">
<ItemTemplate>
<asp:Label runat="server" ID="lbtitle" Text='<%# Eval("Title") %>' />
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox runat="server" ID="txtEditTitle" Text='<%# Eval("Title") %>' ></asp:TextBox>
</EditItemTemplate>
<FooterTemplate>
<asp:TextBox runat="server" ID="txtTitle"></asp:TextBox>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="简介" SortExpression="Descript">
<ItemTemplate>
<asp:Label runat="server" ID="lbdes" Text='<%# Eval("Descript") %>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox runat="server" ID="txtEditDes" Text='<%# Eval("Descript") %>' ></asp:TextBox>
</EditItemTemplate>
<FooterTemplate>
<asp:TextBox runat="server" ID="txtDes"></asp:TextBox>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="图书分类" SortExpression="Booktype">
<ItemTemplate>
<asp:Label runat="server" ID="lbtype" Text='<%# Eval("Booktype") %>' />
</ItemTemplate>
<EditItemTemplate>
<asp:DropDownList runat="server" ID="ddEditType">
<asp:ListItem Text="计算机" Value="计算机"></asp:ListItem>
<asp:ListItem Text="其它" Value="其它"></asp:ListItem>
</asp:DropDownList>
</EditItemTemplate>
<FooterTemplate>
<asp:DropDownList runat="server" ID="ddType">
<asp:ListItem Text="计算机" Value="计算机"></asp:ListItem>
<asp:ListItem Text="其它" Value="其它"></asp:ListItem>
</asp:DropDownList>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="单价" SortExpression="Price">
<ItemTemplate>
<asp:Label runat="server" Text='<%# Eval("Price") %>' ID="labPrice"></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox runat="server" ID="txtEditPrice" Text='<%# Eval("Price") %>' ></asp:TextBox>
</EditItemTemplate>
<FooterTemplate>
<asp:TextBox runat="server" ID="txtPrice"></asp:TextBox>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="选择">
<ItemTemplate>
<asp:CheckBox runat="server" ID="chkbox"/>
</ItemTemplate>
<FooterTemplate>
<asp:Button runat="server" ID="btnadd" Text="添加" OnClick="btnadd_Click"/>
</FooterTemplate>
</asp:TemplateField>
<asp:CommandField runat="server" ShowEditButton="True" HeaderText="操作" />
<asp:CommandField runat="server" ShowDeleteButton="True" />
</Columns>
</asp:GridView>
</div>
<div>
<asp:CheckBox runat="server" ID="chkAll" Text="全选" AutoPostBack="true" OnCheckedChanged="chkAll_CheckedChanged"/>
<asp:Button runat="server" ID="btndelall" Text="删除" OnClick="btndelall_Click" />
</div>
<div>
<asp:Button runat="server" ID="btnpricesum" Text="价格求和" OnClick="btnpricesum_Click"/> <asp:Label runat="server" ID="labsum" Text="0.00"></asp:Label>
</div>
</form>
</body>
</html>WebForm1.aspx.csusing System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using BLL;
using Model;
using System.Data;
namespace gridview书籍管理
{
public partial class WebForm1 : System.Web.UI.Page
{
private int currentid;
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
//排序表达式 实际上就是 字段名（ViewState作为全局变量）
ViewState["sortexpression"] = "Id";
//排序顺序
ViewState["sortorder"] = "ASC";
//绑定数据
Bind();
}
}
public void Bind()
{
// this.gridview1.DataSource = BLL.UserBLL.selectAllbooks();
//设置datakey
this.gridview1.DataKeyNames = new string[] { "Id" };
//使用dataview进行排序
DataView view = BLL.UserBLL.selectAllbooks().DefaultView;
//设置排序
view.Sort = ViewState["sortexpression"] + " " + ViewState["sortorder"];
//设置dataview
this.gridview1.DataSource = view;
//绑定
this.gridview1.DataBind();
}
/// 分页时
protected void gridview1_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
///分页
this.gridview1.PageIndex = e.NewPageIndex;
//把编辑行恢复原状
this.gridview1.EditIndex = -1;
//重新绑定
Bind();
}
//行编辑时
protected void gridview1_RowEditing(object sender, GridViewEditEventArgs e)
{
//设置编辑行
this.gridview1.EditIndex = e.NewEditIndex;
//保存当前正在编辑的行的id
currentid = Convert.ToInt32(this.gridview1.DataKeys[e.NewEditIndex].Value);
//重新绑定
Bind();
}
//退出编辑
protected void gridview1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
{
//编辑行恢复
this.gridview1.EditIndex = -1;
Bind();
}
//行数据绑定
protected void gridview1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (this.gridview1.EditIndex == e.Row.RowIndex) //当前绑定数据行是编辑行
{
int currentindex = e.Row.RowIndex;
DropDownList ddl =(DropDownList) (e.Row.FindControl("ddEditType"));
if (ddl != null)
{
bookinfo bi= UserBLL.selectbook(currentid);
if (bi.Booktype == "其它")
{
ddl.SelectedIndex = 1;
}
else {
ddl.SelectedIndex = 0;
}
}
}
}
//行更新时
protected void gridview1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
int index= e.RowIndex;
TextBox txtTitle= this.gridview1.Rows[index].FindControl("txtEditTitle") as TextBox;
TextBox txtDes = this.gridview1.Rows[index].FindControl("txtEditDes") as TextBox;
DropDownList ddl = this.gridview1.Rows[index].FindControl("ddEditType") as DropDownList;
TextBox txtPrice = this.gridview1.Rows[index].FindControl("txtEditPrice") as TextBox;
/////
bookinfo bi = new bookinfo();
bi.Title = txtTitle.Text;
bi.Decsript = txtDes.Text;
bi.Booktype = ddl.SelectedValue;
bi.Price = Convert.ToDouble(txtPrice.Text.Trim());
///获取id
bi.Id = Convert.ToInt32(this.gridview1.DataKeys[index].Value);
BLL.UserBLL.updateBook(bi);
////关闭编辑行
this.gridview1.EditIndex = -1;
//重新绑定数据
Bind();
}
//行删除时
protected void gridview1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
int index=e.RowIndex;
int id=Convert.ToInt32( this.gridview1.DataKeys[index].Value);
BLL.UserBLL.deleteByid(id);
//重新绑定
Bind();
}
//脚注里面的添加数据按钮点击事件
protected void btnadd_Click(object sender, EventArgs e)
{
//行对象.FindControl("ID")
// FooterRow.FindControl()
TextBox txttitle=this.gridview1.FooterRow.FindControl("txtTitle") as TextBox;
TextBox txtDes = this.gridview1.FooterRow.FindControl("txtDes") as TextBox;
DropDownList ddl = this.gridview1.FooterRow.FindControl("ddType") as DropDownList;
TextBox txtPrice = this.gridview1.FooterRow.FindControl("txtPrice") as TextBox;
////
bookinfo bi = new bookinfo();
bi.Title = txttitle.Text;
bi.Decsript = txtDes.Text;
bi.Booktype = ddl.SelectedValue;
bi.Price = Convert.ToDouble(txtPrice.Text.Trim());
//
BLL.UserBLL.addBook(bi);
Bind();
}
//全选
protected void chkAll_CheckedChanged(object sender, EventArgs e)
{
if (this.chkAll.Checked == true)
{
for (int i = 0; i < this.gridview1.Rows.Count; i++)
{
CheckBox chb = this.gridview1.Rows[i].FindControl("chkbox") as CheckBox;
chb.Checked = true;
}
}
else {
for (int i = 0; i < this.gridview1.Rows.Count; i++)
{
CheckBox chb = this.gridview1.Rows[i].FindControl("chkbox") as CheckBox;
chb.Checked = false;
}
}
}
//选择删除按钮
protected void btndelall_Click(object sender, EventArgs e)
{
for (int i = 0; i < this.gridview1.Rows.Count; i++)
{
CheckBox chb = this.gridview1.Rows[i].FindControl("chkbox") as CheckBox;
if (chb.Checked == true)
{
int id = Convert.ToInt32(this.gridview1.DataKeys[i].Value);
BLL.UserBLL.deleteByid(id);
}
}
Bind();
}
//求和
protected void btnpricesum_Click(object sender, EventArgs e)
{
double sum = 0;
for (int i = 0; i < this.gridview1.Rows.Count; i++)
{
CheckBox chb = this.gridview1.Rows[i].FindControl("chkbox") as CheckBox;
if (chb.Checked == true)
{
Label lab=this.gridview1.Rows[i].FindControl("labPrice") as Label;
sum += Convert.ToDouble(lab.Text.Trim());
}
}
this.labsum.Text = sum.ToString();
}
//排序时
protected void gridview1_Sorting(object sender, GridViewSortEventArgs e)
{
//产生点击事件的排序字符串
string expression = e.SortExpression;
if (ViewState["sortexpression"].ToString() == expression) //如果上次点击的是这个，就直接设置ASC,DESC
{
if (ViewState["sortorder"].ToString() == "ASC")
{
ViewState["sortorder"] = "DESC";
}
else
{
ViewState["sortorder"] = "ASC";
}
}
else
{
//如果上次没有点击这个 就直接排序
ViewState["sortexpression"] = expression;
}
/////////////这里只是设置一些全局变量 实际排序操作 在 DataView的Sort排序字符串里面设置
Bind();//重新绑定
}
}
}Web.Config
<?xml version="1.0" encoding="utf-8"?> <!-- 有关如何配置 ASP.NET 应用程序的详细信息，请访问 https://go.microsoft.com/fwlink/?LinkId=169433 --> <configuration> <system.web> <compilation debug="true" targetFramework="4.5.2"/> <httpRuntime targetFramework="4.5.2"/> </system.web> <system.codedom> <compilers> <compiler language="c#;cs;csharp" extension=".cs" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=1.0.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:6 /nowarn:1659;1699;1701"/> <compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.VBCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=1.0.3.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:14 /nowarn:41008 /define:_MYTYPE=\"Web\" /optionInfer+"/> </compilers> </system.codedom> <connectionStrings> <add name="MYSQL" connectionString="Data Source=.;Initial Catalog=gridview;Integrated Security=True"/> </connectionStrings> </configuration>SQLHELPER.cs
using System;
using System.Collections.Generic;
using System.Text;
//添加引用 System.Configuration
using System.Configuration;
using System.Data;
using System.Data.Sql;
using System.Data.SqlClient;
namespace DAL
{
public class SQLHELPER
{
//获取Web.config里面的连接字符串
public static String configuration = ConfigurationManager.ConnectionStrings["MYSQL"].ConnectionString;
/// <summary>
/// 返回首行首列
/// </summary>
/// <param name="sqltext">sql语句</param>
/// <returns>(object)</returns>
public static object ExecuteScalar(string sqltext)
{
using (SqlConnection conn = new SqlConnection(configuration))
{
conn.Open();
SqlCommand cmd = new SqlCommand(sqltext, conn);
return cmd.ExecuteScalar();
}
}
/// <summary>
/// 返回受影响行数
/// </summary>
/// <param name="sqltext"></param>
/// <returns></returns>
public static object ExecuteNonQuery(string sqltext)
{
using (SqlConnection conn = new SqlConnection(configuration))
{
conn.Open();
SqlCommand cmd = new SqlCommand(sqltext, conn);
return cmd.ExecuteNonQuery();
}
}
/// <summary>
/// 返回DataSet结果集
/// </summary>
/// <param name="sqltext">SQL语句</param>
/// <returns>DataSet</returns>
public static DataSet ExecuteDataSet(string sqltext)
{
using (SqlConnection conn = new SqlConnection(configuration))
{
conn.Open();
SqlDataAdapter adapter = new SqlDataAdapter(sqltext, conn);
DataSet dataset = new DataSet();
adapter.Fill(dataset);
return dataset;
}
}
}
}UserServer.csusing System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Data;
using Model;
namespace DAL
{
public class UserServer
{
public static DataSet selectAllBooks()
{
string sql = " select * from bookinfo order by id desc";
return SQLHELPER.ExecuteDataSet(sql);
}
public static object addBook(bookinfo bi)
{
return SQLHELPER.ExecuteNonQuery(" insert into bookinfo (title,descript,booktype,price)values('" + bi.Title + "','" + bi.Decsript + "','" + bi.Booktype + "',' "+ bi.Price+"')");
}
//根据id查找book
public static DataSet selectBook(int id)
{
return SQLHELPER.ExecuteDataSet(" select [title],[descript],[booktype],[price] from bookinfo where id='" + id + "'");
}
//更新书籍信息
public static object updateBook(bookinfo bi)
{
return SQLHELPER.ExecuteNonQuery(" update bookinfo set title='" + bi.Title + "',descript='" + bi.Decsript + "',booktype='" + bi.Booktype+ "',price='" + bi.Price+"' where id='" + bi.Id+"'");
}
//删除书籍
public static object deleteByid(int id)
{
return SQLHELPER.ExecuteNonQuery(" delete from bookinfo where id='" + id + "'");
}
}
}UserBLL.csusing System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Data;
using DAL;
using Model;
namespace BLL
{
public class UserBLL
{
public static DataTable selectAllbooks()
{
return UserServer.selectAllBooks().Tables[0];
}
public static int addBook(bookinfo bi)
{
return Convert.ToInt32(UserServer.addBook(bi));
}
///根据id查找book
public static bookinfo selectbook(int id)
{
DataTable dt= UserServer.selectBook(id).Tables[0];
bookinfo bi = new bookinfo();
bi.Id = id;
bi.Title = dt.Rows[0][0].ToString();
bi.Decsript= dt.Rows[0][1].ToString();
bi.Booktype = dt.Rows[0][2].ToString();
return bi;
// bi.Price = dt.Rows[0][3]
}
//更新书籍信息
public static int updateBook(bookinfo bi)
{
return Convert.ToInt32(DAL.UserServer.updateBook(bi));
}
//删除书籍
public static int deleteByid(int id)
{
return Convert.ToInt32(DAL.UserServer.deleteByid(id));
}
}
}bookinfo.cs
using System;
using System.Collections.Generic;
using System.Text;
namespace Model
{
/// <summary>
/// 图书信息实体类
/// </summary>
public class bookinfo
{
private int id;
private string title;
private string decsript;
private string booktype;
private double price;
public int Id { get => id; set => id = value; }
public string Title { get => title; set => title = value; }
public string Decsript { get => decsript; set => decsript = value; }
public string Booktype { get => booktype; set => booktype = value; }
public double Price { get => price; set => price = value; }
}
}运行效果：
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