<div>
Can't you just write this...<br />

<pre><code class="code-1 nolinks" id="code-265021"><span></span>
<span>&lt;asp:Button ID=&quot;Aim&quot; runat=&quot;server&quot; BorderStyle=&quot;None&quot; Text=&quot;Aim&quot;</span>
<span>    onclick=&quot;Aim_Click&quot; Width=&quot;56px&quot; OnMouseEnter=&quot;this.style.backgroundColor='white';&quot; OnMouseLeave=&quot;this.style.backgroundColor=' #&lt;%Response.Write(Aim.BackColor.Name.ToString().Remove(0, 2));%&gt;';&quot; /&gt;</span>
</code></pre>
</div>


<div>
Alternatively you could set the value from the Page_Load event in the code behind.
</div>


<div>
How do you set it from a seperate c# page.
</div>


<div>
Are you using Visual Studio Express? It's much easier to explain if you're using Visual Studio (any version!).<br />
<br />
Let me know and I can provide some instructions (step-by-step) in Visual Studio.<br />
<br />
Also you may want to read up about code-behind if you don't know of it already.<br />
<a href="http://support.microsoft.com/kb/303247" rel="ugc">http://support.microsoft.com/kb/303247</a><br />
<a href="http://www.4guysfromrolla.com/webtech/100500-1.shtml" rel="ugc">http://www.4guysfromrolla.com/webtech/100500-1.shtml</a>
</div>


<div>
I am sorry to say I am using VS Express 2008, I am compiling in version 2 not 3.5.<br />
<br />
I understand the idea of code behind. But I am not sure how to pass a variable from the code behind and write it into the javascript which I have on my HTML page.
</div>


<div>
I've had a better idea...<br />
<br />
Write some Javascript and then attach it to the onmouseenter and onmouseleave events at run-time.<br />
<br />
<br />

<pre><code class="code-10 nolinks" id="code-265034"><span> &lt;script type=&quot;text/javascript&quot;&gt;</span>
<span> </span>
<span>var element = document.getElementById('&lt;%=Aim.ClientID %&gt;');</span>
<span>    element.attachEvent('onMouseEnter',setBGColor('white'));</span>
<span>    element.attachEvent('onMouseLeave',setBGColor('&lt;%=Aim.BackColor.Name.ToString())%&gt;');</span>
<span>    </span>
<span>    function setBGColor(strColor){</span>
<span>    </span>
<span>        var element = document.getElementById('&lt;%=Aim.ClientID %&gt;');</span>
<span>        element.bgcolor = strColor;</span>
<span>    </span>
<span>    }</span>
<span> </span>
<span>&lt;/script&gt;</span>
</code></pre>
</div>


<div>
I am not so familar with javascript... what do you mean by attach it to the onmouseenter
</div>


<div>
VS Express is perfectly suitable for most development, even for enterprise level applications you can usually get by with VS Express.
</div>


<div>
what did you mean by <br />
<br />
'Write some Javascript and then attach it to the onmouseenter and onmouseleave events at run-time'
</div>


<div>
When you are writing you code for<br />
OnMouseEnter=&quot;this.style.b<wbr />ackgroundC<wbr />olor='whit<wbr />e';&quot; <br />
and<br />
OnMouseLeave=&quot;this.style.b<wbr />ackgroundC<wbr />olor=' &lt;%string colorName; colorName = Aim.BackColor.Name.ToStrin<wbr />g(); Response.Write(&quot;#&quot; + colorName.Remove(0, 2));%&gt;';&quot;<br />
<br />
You are attaching those pieces of code to the &quot;onmouseenter&quot; and &quot;onmouseleave&quot; events.<br />
<br />
These events are triggered in Javascript when you mouse goes over or leaves the element. These are *not* handled by .Net or C#, it all happens in Javascript (which is client-side only). The C# code is server-side.<br />
<br />
If you try the code snippet I posted above you can see it is written in Javascript and does exactly the same as your original code but it's not written in the &quot;&lt;asp:Button&gt;&quot; tag so you shouldn't have a problem building your application.<br />
<br />
The &lt;% %&gt; parts in the snippet use C# to put some values in that Javascript uses when it runs the script.
</div>


<div>
so do u mean I have to do this<br />
<br />
&lt;asp:Button ID=&quot;Aim&quot; runat=&quot;server&quot; BorderStyle=&quot;None&quot; Text=&quot;Aim&quot;<br />
&nbsp; &nbsp; onclick=&quot;Aim_Click&quot; Width=&quot;56px&quot; OnMouseEnter=&quot;this.style.b<wbr />ackgroundC<wbr />olor='whit<wbr />e';&quot; OnMouseLeave=&quot;this.style.b<wbr />ackgroundC<wbr />olor=&lt;scri<wbr />pt type=&quot;text/javascript&quot;&gt;<br />
&nbsp;<br />
var element = document.getElementById('&lt;<wbr />%=Aim.Clie<wbr />ntID %&gt;');<br />
&nbsp; &nbsp; element.attachEvent('onMou<wbr />seEnter',s<wbr />etBGColor(<wbr />'white'));<wbr /><br />
&nbsp; &nbsp; element.attachEvent('onMou<wbr />seLeave',s<wbr />etBGColor(<wbr />'&lt;%=Aim.Ba<wbr />ckColor.Na<wbr />me.ToStrin<wbr />g())%&gt;');<br />
&nbsp; &nbsp; <br />
&nbsp; &nbsp; function setBGColor(strColor){<br />
&nbsp; &nbsp; <br />
&nbsp; &nbsp; &nbsp; &nbsp; var element = document.getElementById('&lt;<wbr />%=Aim.Clie<wbr />ntID %&gt;');<br />
&nbsp; &nbsp; &nbsp; &nbsp; element.bgcolor = strColor;<br />
&nbsp; &nbsp; <br />
&nbsp; &nbsp; }<br />
&nbsp;<br />
&lt;/script&gt;<br />
&quot;&nbsp;/&gt;
</div>


<div>
Your ASP tag should look this <br />
&lt;asp:Button ID=&quot;Aim&quot; runat=&quot;server&quot; BorderStyle=&quot;None&quot; Text=&quot;Aim&quot;<br />
&nbsp; &nbsp; onclick=&quot;Aim_Click&quot; Width=&quot;56px&quot;&gt;<br />
<br />
NOTE : We have removed the onmouseenter and onmouseleave, we will add these in a different place.
</div>


<div>
There were a few syntax issues whcih I can't get round.<br />
<br />
element.attachEvent('onMou<wbr />seLeave',s<wbr />etBGColor(<wbr />'&lt;%=Aim.Ba<wbr />ckColor.Na<wbr />me.ToStrin<wbr />g())%&gt;');<br />
<br />
does not seem to work
</div>


<div>
Wait, I've seen my issue...<br />
Try this.<br />
element.attachEvent('onMou<wbr />seLeave',s<wbr />etBGColor(<wbr />'&lt;%=Aim.Ba<wbr />ckColor.Na<wbr />me.ToStrin<wbr />g())%&gt;'));<wbr /><br />
<br />
(missing a closing bracket).<br />
<br />
If that doesn't work then perhaps...<br />
<br />
&lt;%=Aim.BackColor.Name.ToSt<wbr />ring())%&gt; should mean that C# evaluates this to the BackColor of the Aim button.<br />
<br />
Possibly my code syntax is wrong - I'm not able to test this right now so instead try this (after trying the above).<br />
element.attachEvent('onMou<wbr />seLeave',s<wbr />etBGColor(<wbr />'gray'));<br />
<br />

</div>


<div>
ok.. I play around with it now.<br />
<br />
thanks<br />
<br />
I'll give out the points when it is wokring 
</div>


<div>
All working now.... <br />
<br />
In addition to what you guys had said above I had to configure the postback events. <br />
<br />
I have spent two days on this issue.... MAD i know but looks cool now :)
</div>


<div>
<div class="content wysiwyg-content">
I have created a button which I would like to included a little script to change the button color.<br />
<br />
&lt;asp:Button ID=&quot;Aim&quot; runat=&quot;server&quot; BorderStyle=&quot;None&quot; Text=&quot;Aim&quot; <br />
&nbsp; &nbsp; onclick=&quot;Aim_Click&quot; Width=&quot;56px&quot; OnMouseEnter=&quot;this.style.b<wbr />ackgroundC<wbr />olor='whit<wbr />e';&quot; OnMouseLeave=&quot;this.style.b<wbr />ackgroundC<wbr />olor=' &lt;%string colorName; colorName = Aim.BackColor.Name.ToStrin<wbr />g(); Response.Write(&quot;#&quot; + colorName.Remove(0, 2));%&gt;';&quot; /&gt;<br />
<br />
What I get is an error.<br />
<br />
Server tags cannot contain &lt;% ... %&gt; constructs.<br />
<br />
if I run <br />
<br />
&lt;asp:Button ID=&quot;Aim&quot; runat=&quot;server&quot; BorderStyle=&quot;None&quot; Text=&quot;Aim&quot; <br />
&nbsp; &nbsp; onclick=&quot;Aim_Click&quot; Width=&quot;56px&quot; OnMouseEnter=&quot;this.style.b<wbr />ackgroundC<wbr />olor='whit<wbr />e';&quot; OnMouseLeave=&quot;this.style.b<wbr />ackgroundC<wbr />olor=' &lt;%Response.Write(Aim.BackC<wbr />olor.Name.<wbr />ToString()<wbr />);%&gt;';&quot; /&gt;<br />
<br />
I don't get an error.<br />
<br />
Is there a way in which I can pass variables from my seperate C# page to the asp.net/html page. Or is there another method inwhich I can achieve the above.
</div>
</div>


I have created a button which I would like to included a little script to change the button color.

<asp:Button ID="Aim" runat="server" BorderStyle="None" Text="Aim" 
    onclick="Aim_Click" Width="56px" OnMouseEnter="this.style.backgroundColor='white';" OnMouseLeave="this.style.backgroundColor=' <%string colorName; colorName = Aim.BackColor.Name.ToString(); Response.Write("#" + colorName.Remove(0, 2));%>';" />

What I get is an error.

Server tags cannot contain <% ... %> constructs.

if I run 

<asp:Button ID="Aim" runat="server" BorderStyle="None" Text="Aim" 
    onclick="Aim_Click" Width="56px" OnMouseEnter="this.style.backgroundColor='white';" OnMouseLeave="this.style.backgroundColor=' <%Response.Write(Aim.BackColor.Name.ToString());%>';" />

I don't get an error.

Is there a way in which I can pass variables from my seperate C# page to the asp.net/html page. Or is there another method inwhich I can achieve the above.

Server tags cannot contain &lt;% ... %&gt; constructs.

The .NET Framework is not specific to any one programming language; rather, it includes a library of functions that allows developers to rapidly build applications. Several supported languages include C#, VB.NET, C++ or ASP.NET.

.NET Programming

The successor to Active Server Pages, ASP.NET websites utilize the .NET framework to produce dynamic, data and content-driven web applications and services. ASP.NET code can be written using any .NET supported language. As of 2009, ASP.NET can also apply the Model-View-Controller (MVC) pattern to web applications

ASP.NET

C# is an object-oriented programming language created in conjunction with Microsoft’s .NET framework. Compilation is usually done into the Microsoft Intermediate Language (MSIL), which is then JIT-compiled to native code (and cached) during execution in the Common Language Runtime (CLR).

Server tags cannot contain &lt;% ... %&gt; constructs.

Server tags cannot contain <% ... %> constructs.