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简单新闻发布系统

2015-11-09 15:03 225 查看
所用到的方法

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Data.SqlClient;

/// <summary>
/// news 的摘要说明
/// </summary>
public class newsDA
{
private DataClassesDataContext Context;
private SqlConnection conn;
private SqlCommand cmd;
public newsDA()
{
//
// TODO: 在此处添加构造函数逻辑
//

Context = new DataClassesDataContext();
}
public void Insert(news data)
{
Context.news.InsertOnSubmit(data);
Context.SubmitChanges();
}
public void updata(news data)
{
//先去模型中找
news sdata = Context.news.Single(r => r.newsid == data.newsid);
//找到后修改
sdata.newsid = data.newsid;
sdata.title = data.title;
sdata.Author = data.Author;
sdata.source = data.source;
sdata.content = data.content;
sdata.time = data.time;
//提交修改
Context.SubmitChanges();
}
public List<news> select()
{
return Context.news.ToList();
}
public news select(string ids)
{
return Context.news.Where(r => r.newsid == int.Parse(ids)).First();
}
public List<news> selebytitle(string name)
{
return Context.news.Where(r => r.title == name).ToList();
}
public void delete(int ids)
{
news data = Context.news.Single(r=>r.newsid==ids);

Context.news.DeleteOnSubmit(data);
Context.SubmitChanges();
}
}


发布页面

代码

C#

using System;
using System.Collections.Generic;
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)
{

}
protected void Button2_Click(object sender, EventArgs e)
{
Response.Redirect("select.aspx");
}
protected void Button1_Click(object sender, EventArgs e)
{
news data = new news();
DateTime time = DateTime.Now;

data.title = TextBox1.Text;
data.Author = TextBox2.Text;
data.source = TextBox3.Text;
data.content = TextBox4.Text;
data.time = time;
new newsDA().Insert(data);
}
}


HTML

<%@ 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></title>
</head>
<body>
<form id="form1" runat="server">
<div>

发布新闻<br />
标题：<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<br />
作者：<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
<br />
来源：<asp:TextBox ID="TextBox3" runat="server"></asp:TextBox>
<br />
内容：<asp:TextBox ID="TextBox4" runat="server" Height="130px" Width="136px"></asp:TextBox>

<br />
<asp:Button ID="Button1" runat="server" Text="提交" OnClick="Button1_Click" />

<asp:Button ID="Button2" runat="server" Text="查看" OnClick="Button2_Click" />

</div>
</form>
</body>
</html>




查看内容

代码

C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class select : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
Repeater1.DataSource = new newsDA().select();
Repeater1.DataBind();//绑定数据
}
}


HTML

<%@ 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></title>
</head>
<body>
<form id="form1" runat="server">
<div>

发布新闻<br />
标题：<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<br />
作者：<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
<br />
来源：<asp:TextBox ID="TextBox3" runat="server"></asp:TextBox>
<br />
内容：<asp:TextBox ID="TextBox4" runat="server" Height="130px" Width="136px"></asp:TextBox>

<br />
<asp:Button ID="Button1" runat="server" Text="提交" OnClick="Button1_Click" />

<asp:Button ID="Button2" runat="server" Text="查看" OnClick="Button2_Click" />

</div>
</form>
</body>
</html>




修改内容

代码

C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class insert : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
if (Request["id"] != null)
{
string ids = Request["id"].ToString();

news data = new newsDA().select(ids);
DateTime time = DateTime.Now;
TextBox1.Text = data.title;
TextBox2.Text = data.Author;
TextBox3.Text = data.source;
TextBox4.Text = data.content;
time = data.time;
Label1.Text = data.newsid.ToString();
}
}
}
protected void Button1_Click(object sender, EventArgs e)
{
news data = new news();
DateTime time = DateTime.Now;

data.title = TextBox1.Text;
data.Author = TextBox2.Text;
data.source = TextBox3.Text;
data.content = TextBox4.Text;
data.time = time;
data.newsid =int.Parse( Label1.Text);
new newsDA().updata (data);

}
protected void Button2_Click(object sender, EventArgs e)
{
Response.Redirect("select.aspx");
}
}


HTML

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

<!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>

修改新闻<asp:Label ID="Label1" runat="server" Text="Label" Visible="False"></asp:Label>
<br />
标题：<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<br />
作者：<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
<br />
来源：<asp:TextBox ID="TextBox3" runat="server"></asp:TextBox>
<br />
内容：<asp:TextBox ID="TextBox4" runat="server"></asp:TextBox>
<br />
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="修改" />
<asp:Button ID="Button2" runat="server" OnClick="Button2_Click" Text="查看" />

</div>
</form>
</body>
</html>




删除内容，新建一个web窗体，什么都不用写

代码

C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class delete : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
string ids=Request["id"].ToString();
new newsDA().delete(int.Parse(ids));
Response.Redirect("select.aspx");
}
}


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