ArryList应用
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Configuration;
using System.Collections;
using System.Data.SqlClient;
/// <summary>
///Class1 的摘要说明
/// </summary>
public class Class1
{
public Class1()
{
//
//TODO: 在此处添加构造函数逻辑
//
}
public static readonly string cnnstring = ConfigurationManager.ConnectionStrings["con"].ConnectionString;
public static ArrayList a(string s)
{
using (SqlConnection con=new SqlConnection(cnnstring))
{
using (SqlCommand cmd=new SqlCommand("select * from usertable",con))
{
SqlDataReader myreader;
con.Open();
myreader = cmd.ExecuteReader();
ArrayList list = new ArrayList();
person p =null;
while (myreader.Read())
{
if (s=="1")
{
p = new person(myreader[1].ToString(), myreader[2].ToString());
list.Add(p);
}
else if (s=="2")
{
list.Add(myreader[1].ToString() + "," + myreader[2].ToString());
}
}
return list;
}
}
}
}
public class person
{
private string personname = "";
public string Personname
{
get { return personname; }
set { personname = value; }
}
private string personpwd = "";
public string Personpwd
{
get { return personpwd; }
set { personpwd = value; }
}
public person(string name,string pwd)
{
personname = name;
personpwd = pwd;
}
}
以上是一个类文件
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Configuration;
using System.Collections;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
if (RadioButton1.Checked)
{
ArrayList list = Class1.a("2") as ArrayList;
foreach (var item in list)
{
Response.Write(item + ";</br>");
}
}
else {
ArrayList list = Class1.a("1") as ArrayList;
foreach (person item in list)
{
Response.Write("Name:" + item.Personname + "Password:" + item.Personpwd + ";</br>");
}
}
}
protected void Button2_Click(object sender, EventArgs e)
{
ArrayList list=null;
if (RadioButton1.Checked)
{
list = Class1.a("1") as ArrayList;
}
else
{
list = Class1.a("2") as ArrayList;
}
GridView1.DataSource = list;
GridView1.DataBind();
}
}
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