Application - 全局公共变量组
存放位置：服务端
所有的访问用户都是访问的同一个变量
声明周期：永久
用法同session类似
viewstate-病例
因为http的无状态性，需要记录上一个页面的状态，因而需要一个viewstate记录上一个页面的状态，然后返回成相应的内容
纯HTML提交：
HTML界面：
要写action与method：
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title></title>
</head>
<body>
<form action="Default.aspx" method="get">
货品名称：<input type="text" name="t1"/><br />
货品数量：<input type="text" name="t2"/><br />
单价：        <input type="text" name="t3"/><br />
进货时间：<input type="text" name="t4"/><br />
联系电话：<input type="text" name="t5"/><br />
仓库号：    
<select id="Select1" name="t6">
<option>g01</option>
<option>g02</option>
<option>g03</option>
</select> <br />
<input type="submit" value="提交" />
</form>
</body>
</html>
实体类：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
/// <summary>
/// goods 的摘要说明
/// </summary>
public class goods
{
public goods()
{
//
// TODO: 在此处添加构造函数逻辑
//
}
public string goodsname { get; set; }
public string number { get; set; }
public string sprice { get; set; }
public DateTime intime { get; set; }
public string gtel { get; set; }
public string goodsbase { get; set; }
}
数据访问类：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Data.SqlClient;
/// <summary>
/// goodsdata 的摘要说明
/// </summary>
public class goodsdata
{
SqlConnection conn = null;
SqlCommand cmd = null;
public goodsdata()
{
conn = new SqlConnection("server=.;database=data0928;user=sa;pwd=123");
cmd = conn.CreateCommand();
}
public bool insert(goods g)
{
bool ok = false;
int count = 0;
cmd.CommandText = "insert into goods values(@a,@b,@c,@d,@e,@f)";
cmd.Parameters.Clear();
cmd.Parameters.AddWithValue("@a",g.goodsname);
cmd.Parameters.AddWithValue("@b",g.number);
cmd.Parameters.AddWithValue("@c",g.sprice);
cmd.Parameters.AddWithValue("@d",DateTime.Now);
cmd.Parameters.AddWithValue("@e",g.gtel);
cmd.Parameters.AddWithValue("@f",g.goodsbase);
conn.Open();
count = cmd.ExecuteNonQuery();
conn.Close();
if (count > 0)
{ ok = true; }
return ok;
}
}
aspx界面：
using System;
using System.Collections.Generic;
using System.Data.SqlClient;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
goods g = new goods();
g.goodsname = Request["t1"];
g.number = Request["t2"];
g.sprice = Request["t3"];
g.intime = Convert.ToDateTime(Request["t4"]);
this.Title = g.intime.ToString();
g.gtel = Request["t5"];
g.goodsbase = Request["t6"];
bool ok = new goodsdata().insert(g);
if (ok)
{
Response.Write("<script>alert(‘添加成功‘)</script>");
}
}
}
时间： 2024-08-25 06:50:15