在C#中实现MSN消息框的功能

最近有一个任务,是实现MSN消息框的功能.

一共做了三个版本:
1、用asp.net实现网页中弹出消息框
    这个我采用了一个.NET的第三方控件（这个控件在网上找一下就行）,可是这个控件只能显示在网页区域内，也就是说,它无法真正实现和MSN一样的消息框功能。无柰，只好放弃。不过，如果只需要在网页区域中显示的话，可以采用它.

2、用JAVASCRIPT去实现该功能
    这回采用JAVASCRIPT去实现。代码如下：
        <SCRIPT language="JavaScript"> 

<!-- 
 
/* 
*    消息构造 
*/ 
function CLASS_MSN_MESSAGE(id,width,height,caption,title,message,target,action){ 
    this.id     = id; 
    this.title  = title; 
    this.caption= caption; 
    this.message= message; 
    this.target = target; 
    this.action = action; 
    this.width    = width?width:200; 
    this.height = height?height:120; 
    this.timeout= 150; 
    this.speed    = 20;
    this.step    = 1;
    this.right    = screen.width -1; 
    this.bottom = screen.height;
    this.left    = this.right - this.width;
    this.top    = this.bottom - this.height;
    this.timer    = 0;
    this.pause    = false;
    this.close    = false;
} 
 
/* 
*    隐藏消息方法 
*/ 
CLASS_MSN_MESSAGE.prototype.hide = function(){ 
    if(this.onunload()){ 

        var offset  = this.height>this.bottom-this.top?this.height:this.bottom-this.top;
        var me  = this; 

        if(this.timer>0){  
            window.clearInterval(me.timer); 
        } 

        var fun = function(){ 
            if(me.pause==false||me.close){
                var x  = me.left;
                var y  = 0;
                var width = me.width;
                var height = 0;
                if(me.offset>0){
                    height = me.offset;
                }
    
                y  = me.bottom - height;
    
                if(y>=me.bottom){
                    window.clearInterval(me.timer); 
                    me.Pop.hide(); 
                } else {
                    me.offset =me.offset - me.step; //等于0是马上消失,否则为逐渐消失
                }
                me.Pop.show(x,y,width,height);   
            }            
        } 

        this.timer = window.setInterval(fun,this.speed)     
    } 
} 
 
/* 
*    消息卸载事件，可以重写 
*/ 
CLASS_MSN_MESSAGE.prototype.onunload = function() { 
    return true; 
} 
/* 
*    消息命令事件，要实现自己的连接，请重写它 
* 
*/ 
CLASS_MSN_MESSAGE.prototype.oncommand = function(){ 
    this.hide();
    window.open('http://www.google.com');   
} 
 
/* 
*    消息显示方法 
*/ 
CLASS_MSN_MESSAGE.prototype.show = function(){ 

    var oPopup = window.createPopup(); //IE5.5+ 
   
    this.Pop = oPopup; 
 
    var w = this.width; 
    var h = this.height; 
 
    var str = "<DIV style='BORDER-RIGHT: #455690 1px solid; BORDER-TOP: #a6b4cf 1px solid; Z-INDEX: 99999; LEFT: 0px; BORDER-LEFT: #a6b4cf 1px solid; WIDTH: " + w + "px; BORDER-BOTTOM: #455690 1px solid; POSITION: absolute; TOP: 0px; HEIGHT: " + h + "px; BACKGROUND-COLOR: #c9d3f3'>" 
        str += "<TABLE style='BORDER-TOP: #ffffff 1px solid; BORDER-LEFT: #ffffff 1px solid' cellSpacing=0 cellPadding=0 width='100%' bgColor=#cfdef4 border=0>" 
        str += "<TR>" 
        str += "<TD style='FONT-SIZE: 12px;COLOR: #0f2c8c' width=30 height=24></TD>" 
        str += "<TD style='PADDING-LEFT: 4px; FONT-WEIGHT: normal; FONT-SIZE: 12px; COLOR: #1f336b; PADDING-TOP: 4px' vAlign=center width='100%'>" + this.caption + "</TD>" 
        str += "<TD style='PADDING-RIGHT: 2px; PADDING-TOP: 2px' vAlign=center align=right width=19>" 
        str += "<SPAN title=关闭 style='FONT-WEIGHT: bold; FONT-SIZE: 12px; CURSOR: hand; COLOR: red; MARGIN-RIGHT: 4px' id='btSysClose' >×</SPAN></TD>" 
        str += "</TR>" 
        str += "<TR>" 
        str += "<TD style='PADDING-RIGHT: 1px;PADDING-BOTTOM: 1px' colSpan=3 height=" + (h-28) + ">" 
        str += "<DIV style='BORDER-RIGHT: #b9c9ef 1px solid; PADDING-RIGHT: 8px; BORDER-TOP: #728eb8 1px solid; PADDING-LEFT: 8px; FONT-SIZE: 12px; PADDING-BOTTOM: 8px; BORDER-LEFT: #728eb8 1px solid; WIDTH: 100%; COLOR: #1f336b; PADDING-TOP: 8px; BORDER-BOTTOM: #b9c9ef 1px solid; HEIGHT: 100%'>" + this.title + "<BR><BR>" 
        str += "<DIV style='WORD-BREAK: break-all' align=left><A href='javascript:void(0)' hidefocus=false id='btCommand'><FONT color=#ff0000>" + this.message + "</FONT></A></DIV>" 
        str += "</DIV>" 
        str += "</TD>" 
        str += "</TR>" 
        str += "</TABLE>" 
        str += "</DIV>" 
 
    oPopup.document.body.innerHTML = str;
   


    this.offset  = 0;
    var me  = this; 

    oPopup.document.body.onmouseover = function(){me.pause=true;}
    oPopup.document.body.onmouseout = function(){me.pause=false;}

    var fun = function(){ 
        var x  = me.right;        
        var y  = 0;
        var width    = me.width;
        var height    = me.height;

            if(me.offset>me.height){
                height = me.height;
            } else {
                height = me.offset;
            }

        y  = me.bottom - me.offset;
        if(y<=me.top)//让消息框消失
        {
            me.timeout--;
            if(me.timeout==0)//当消息框在页面中显示的时间到期时，将消息框隐藏
            {
      //alert(me.timer);
              window.clearInterval(me.timer); 
              me.hide();
   }
        }
        else
        {
            me.offset = me.offset + me.step;
        }
        me.Pop.show(x,y,width,height); 
      // oPopup.show(100, 100, 180, 25, str); 

    } 
 
    this.timer = window.setInterval(fun,this.speed)     
 
    
 
    var btClose = oPopup.document.getElementById("btSysClose"); 
 
    btClose.onclick = function(){ 
        me.close = true;
        me.hide(); 
    } 
 
    var btCommand = oPopup.document.getElementById("btCommand"); 
    btCommand.onclick = function(){ 
        me.oncommand(); 
    }   
} 


/*
** 设置速度方法
**/
CLASS_MSN_MESSAGE.prototype.speed = function(s){
    var t = 20;
    try {
        t = praseInt(s);
    } catch(e){}
    this.speed = t;
}
/*
** 设置步长方法
**/
CLASS_MSN_MESSAGE.prototype.step = function(s){
    var t = 1;
    try {
        t = praseInt(s);
    } catch(e){}
    this.step = t;
}
 
CLASS_MSN_MESSAGE.prototype.rect = function(left,right,top,bottom){
    try {
        this.left        = left    !=null?left:this.right-this.width;
        this.right        = right    !=null?right:this.left +this.width;
        this.bottom        = bottom!=null?(bottom>screen.height?screen.height:bottom):screen.height;
        this.top        = top    !=null?top:this.bottom - this.height;
    } catch(e){}
}


function bb(ini)
{

if(ini<=1)
{

  //alert(window.Form1.teTitle.value);
  var  MSG1 = new CLASS_MSN_MESSAGE(ini,200,120,"<image src='oicq.gif'> 消息提示:",window.Form1.teTitle.value,window.Form1.teShow.value); 
     MSG1.rect(null,null,null,screen.availHeight); //screen 是任务栏，availHeight代表当前任务栏的高度
     //alert(screen.availHeight);
  MSG1.speed    = 10;
  MSG1.step    = 5;
  //alert(MSG1.top);
  //MSG1.hide(); 
// window.setTimeout('Ktime()',120);
  MSG1.show();
}

else if(ini>1)
{
  for(i=1;i<=ini;i++)
  {
   var MSG1 = new CLASS_MSN_MESSAGE(i,200,120,"<image src='oicq.gif'> 消息提示:",window.Form1.teTitle.value,window.Form1.teShow.value); 
   var popheight;
   if(i==1)
    popheight=screen.availHeight;
   else
    popheight=popheight-120;
   
  
   MSG1.rect(null,null,null,popheight); //screen 是任务栏，availHeight代表当前任务栏的高度
   MSG1.speed    = 10;
   MSG1.step    = 5;
   //alert(MSG1.top);
   //MSG1.hide();
   window.setTimeout('Ktime()',1000);
   MSG1.show();
  }
}

}
function Ktime()
{
window.setTimeout('Ktime()',1000);
}
//同时两个有闪烁，只能用层代替了，不过层不跨框架
//var MSG2 = new CLASS_MSN_MESSAGE("aa",200,120,"短消息提示：","您有2封消息","好的啊"); 
//   MSG2.rect(100,null,null,screen.height);
//    MSG2.show(); 
//--> 
  </SCRIPT>
<form id="Form1" method="post" runat="server">
   &nbsp;
   <TABLE id="Table2" style="Z-INDEX: 101; LEFT: 8px; POSITION: absolute; TOP: 8px" cellSpacing="0"
    cellPadding="0" width="100%" border="0">
    <TR>
     <TD vAlign="top"><asp:panel id="Panel1" runat="server"><FONT face="宋体">
        <TABLE id="Table1" style="WIDTH: 783px; HEIGHT: 64px" cellSpacing="0" cellPadding="0" width="783"
         border="0">
         <TBODY>
          <TR>
           <TD style="WIDTH: 94px">
            <asp:label id="Label3" runat="server">标　　题</asp:label></TD>
           <TD><INPUT id="teTitle" style="WIDTH: 336px; HEIGHT: 22px" type="text" size="50" value="MSN Message"
             runat="server"></TD>
          </TR>
          <TR>
           <TD style="WIDTH: 94px">
            <asp:label id="Label1" runat="server">显示文字</asp:label></TD>
           <TD><FONT face="宋体"><INPUT id="teShow" style="WIDTH: 336px; HEIGHT: 22px" type="text" size="50" value="请点击查看详细信息!"></FONT></TD>
          </TR>
          <TR>
           <TD style="WIDTH: 94px">
            <asp:label id="Label2" runat="server">显示次数</asp:label></TD>
           <TD><INPUT id="cou" style="WIDTH: 336px; HEIGHT: 22px" type="text" size="50">
      </asp:panel></TD>
    </TR>
   </TABLE>
   </FONT></TD></TR>
   <TR>
    <TD vAlign="top"><INPUT style="WIDTH: 432px; HEIGHT: 56px" onclick="bb(cou.value)" type="button" value="快按一下吧"></TD>
   </TR>
   </TBODY></TABLE></form>

这个方法可以实现MSN的功能。但还是有一毛病，就是，不能同时出现两个或以上的消息框，否则刷新将十分严重。这样的话，可该怎么办呢？

最后，我实现没有办法了，我只好用C#来实现这个功能

3、用WINDOW窗体实现MSN消息框功能
    这个例子我是照MSDN上的一篇例子做的，我在这里只提供一个网址，因为这个网址包含的范例做的更好一些，我做的拿不出手的程序在这里就不提了

http://www.microsoft.com/china/MSDN/library/netFramework/netframework/WindowsForms.mspx

总结一下：

在这里，我提供了三种方法。各位可因人而宜。不过注意一点的是，如采用第二种方法，就必须将不断闪烁的缺点克服。如果各位高手中有知道如何去掉这个错误的话，请教教小弟！这里不胜感激！