ASP.net后台CS代码文件中控制前台的Div是否显示

 

网页中有一个普通的Div标签

,怎么控制它是否显示?

答:先将前台的Div标签添加runat="server"。

然后,在后台文件中:

protected void Page_Load(object sender, EventArgs e)
{
Div1.visible=false;
}

CSS样式心得!

1:怎么让Div表格水平垂直方向都居中?

答:

#center{

width:764px;

height:578px;

margin-top:-289px;

margin-left:-382px;

;

top:50%;

left:50%;

}

注:margin-top和margin-left都是长宽除以2。

2:Div内文本和控件水平线不一致?

办法一:同一单元格内,将控件样式中加入:vertical-align:middle;

办法二:将文本和控件分为两个div,在文本div样式中加入:line-height:10px;

10px根据div高度调整。

关于asp.net c#中对cookie的操作

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Globalization;

public partial class cookie : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{

}
//写入cookie
protected void Button1_Click(object sender, EventArgs e)
{
HttpCookie cookie = new HttpCookie("Info");//定义对象以及名为Info的项
DateTime dt = DateTime.Now;//定义时间对象
TimeSpan ts = new TimeSpan(1,0,0,0);//cookie有效作用时间
cookie.Expires = dt.Add(ts);//添加作用时间
cookie.Values.Add("user","qinghan");
cookie.Values.Add("userid","qq:19302038");
Response.AppendCookie(cookie);

}
//读取cookie
protected void Button2_Click(object sender, EventArgs e)
{
if (Request.Cookies["info"] != null)
{
string temp = Convert.ToString(Request.Cookies["info"].Values["user"]) + " " + Convert.ToString(Request.Cookies["info"].Values["userid"]);
if (temp == "")
{
Response.Write("空");
}
else
{
Response.Write(temp);
}
}

}
}

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