C#实现仿msn提示消息在登录后只弹出一次的效果(downmoon)

在

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 Explorer

和 Opera

，我试用了一下，效果非常不错，推荐大家使用。

Download demo project (C# and VB.NET) - 38.1 Kb



Download control with source - 37.7 Kb



Download control documentation - 71.1 Kb



Open online sample

[^

].





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}





members

#region

members





protected

AgronetControl.PopupWin pwVegnet;





private



string

downmoontest

=

"

downmoontest

"

;





#endregion

二、按钮事件





Events

#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：





Methods

#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;



}











设置cookie

#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







读cookie

#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









去除SESSION/注销

#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：



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