C#实现仿msn提示消息在登录后只弹出一次的效果


codeproject 上看到一个很不错的控件,完全能够自定义弹出窗口的样式、内容、链接,该控件支持Mozilla, Internet ExplorerOpera,我试用了一下,效果非常不错,推荐大家使用。



下面主要介绍该控件结合cookie实现登录后只提醒一次的功能!
一、定义变量}

#region members
protected AgronetControl.PopupWin pwVegnet;
private string downmoontest="downmoontest";
#endregion

二、按钮事件

View Code
#region Events
private void Page_Load(object sender, System.EventArgs e)
{
pwVegnet.LinkClicked
+=new EventHandler(pwVegnet_LinkClicked);
this.pwVegnet.Visible=false;
if(!IsPostBack)
{
bool bl=IsShowMessage();
if(bl)
{
SetMessage();
setCookies(downmoontest,
"yes",1);
}
else
{
this.pwVegnet.Visible=false;
}
}
}
/// <summary>
/// 注销按钮
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnLogOff_Click(object sender, System.EventArgs e)
{
RemoveAll();
}
private void pwVegnet_LinkClicked(object sender, EventArgs e)
{
//此处可以加上"下次是否显示之类的脚本"---downmoon
Page.Response.Redirect(@"http://www.vegnet.com.cn/user/");
}

三、主要方法:
View Code
#region Methods
private void SetMessage()
{
pwVegnet.HideAfter
= 5000 ;
pwVegnet.Visible
= true ;
pwVegnet.Title
= textTitle.Text;
pwVegnet.Message
= textMsg.Text;
pwVegnet.Text
= textFull.Text;
pwVegnet.DragDrop
= true ;
pwVegnet.OffsetX
= 30 ;
pwVegnet.OffsetY
= 15 ;
pwVegnet.DockMode
= AgronetControl.PopupDocking.BottomRight;
// 随机弹出窗口样式
int t = GetRandomID( 1 , 4 );
switch (t)
{
case 1 : pwVegnet.ColorStyle = AgronetControl.PopupColorStyle.Red; break ;
case 2 : pwVegnet.ColorStyle = AgronetControl.PopupColorStyle.Green; break ;
case 3 : pwVegnet.ColorStyle = AgronetControl.PopupColorStyle.Blue; break ;
case 4 : pwVegnet.ColorStyle = AgronetControl.PopupColorStyle.Violet; break ;
default :pwVegnet.ColorStyle = AgronetControl.PopupColorStyle.Green; break ;
}
pwVegnet.Link
= @" http://www.vegnet.com.cn " ;

}

private bool IsShowMessage()
{
string str = getCookies(downmoontest);
if (str == string .Empty || str.ToLower() == " no " )
{
return true ;
}
else
{
return false ;
}

}
public void MsgBox( string strDebug)
{
Page.Response.Write(
" <script language=javascript>alert(' " + strDebug.Replace( " ' " , "" ).Replace( " " , "" ) + " ');</script> " );
// Page.Response.End();
}
public static string RandomKey( int b, int e)
{
return DateTime.Now.ToString( " yyyyMMdd-HHmmss-fff- " ) + GetRandomID(b,e);
}

public static int GetRandomID( int minValue, int maxValue)
{
Random ri
= new Random( unchecked (( int )DateTime.Now.Ticks));
int k = ri.Next(minValue,maxValue);
return k;
}

#region 读cookie
private void setCookies( string cook, string valuee, int num)
{
// Response.Cookies.Clear();
HttpCookie cookie ;
cookie
= Request.Cookies[cook];
if (cookie == null )
{
cookie
= new HttpCookie(cook);
cookie.Value
= valuee;
cookie.Expires
= DateTime.Now.AddDays(num);
HttpContext.Current.Response.Cookies.Add(cookie);
}
else
{
cookie.Value
= valuee;
}

}

#endregion
#region 写cookie
private string getCookies( string cook)
{
HttpCookie readcookie
= Request.Cookies[cook];
if (readcookie != null && readcookie.Value != null )
{
return readcookie.Value;
}
else
{
return string .Empty;
}
}

#endregion

#region 去除SESSION/注销
/// <summary>
/// 去除SESSION/注销
/// </summary>
public void RemoveAll()
{
HttpCookieCollection cooks
= HttpContext.Current.Response.Cookies;
cooks[downmoontest].Expires
= new DateTime( 1999 , 10 , 12 );
HttpContext.Current.Response.Cookies.Add(cooks[downmoontest]);
}

#endregion


#endregion

实现效果:





http://www.codeproject.com/KB/custom-controls/asppopup.aspx
posted @ 2007-12-29 15:02  邀月  阅读(2052)  评论(1编辑  收藏  举报