"Steven Cheng[MSFT]" wrote:

> Hi Alex,
>
> Thank you for posting.
>
> As for the script rendering and manipulating functions in ASP.NET 2.0 you
> asked, here are some of my understanding and suggestoin:
>
> 1.* When I'm finished doing stuff in Page_Load(), I'd like the cause the
> page
> to scroll to a specific anchor or to the top or bottom of the page.
> ==========================================
> So far for scrolling, ASP.NET 2.0's page class hasn't provided built-in
> methods to do this work. We may still have to use some custom client-side
> script to scroll page to a certain position. For example, the following
> script just help to scroll to a client-side html element:
>
> ================
> function ScrollToElement(theElement)
> {
>
>
>   var selectedPosX = 0;
>   var selectedPosY = 0;
>              
>   while(theElement != null){
>     selectedPosX += theElement.offsetLeft;
>     selectedPosY += theElement.offsetTop;
>     theElement = theElement.offsetParent;
>   }
>        
>                                   
>  window.scrollTo(selectedPosX,selectedPosY);
>
> }
> ================
>
>
> 2. * When the page is finished loading, I want to be able to
> programmatically
> designate a text-box to have the focus for user entry.
> ==========================================
> For set a focus a a certain input field(textbox), ASP.NET 2.0 page class
> rpovide the "SetFocus" method, which take a control instance as input
> parameter, this can help set the focus on the certain control after the
> page get loaded on client.
>
> #Page.SetFocus Method (Control)  
> http://msdn2.microsoft.com/en-us/library/e04ah0f4(VS.80).aspx
>
> e.g:
>
>  protected void Button1_Click(object sender, EventArgs e)
>     {
>         Page.SetFocus(this.Label7);
>     }
>
>
>
> 3. Is there any built-in server-side code I can call that will cause the
> appropriate client-side JavaScript to be rendered to the client to do these
> things?
> ==========================================
> for registering script code that will be executed after the page get loaded
> at client browser, we're recommended to use the
> Page.ClientScript.RegisterStartupScript function.
>
>
> #ClientScriptManager.RegisterStartupScript Method (Type, String, String)
> http://msdn2.microsoft.com/en-us/library/asz8zsxy.aspx
>
>
> And for the case that we want to dynamically register the script code that
> scroll the page to a certain control/element, we can use the below code in
> codebehind together with the scrpit function mentioned in #1:
>
> ===============
> string script = "ScrollToElement(document.getElementById('{0}'));";
>
>         Page.ClientScript.RegisterStartupScript(this.GetType(), "scroll",
>             string.Format(script, this.a1.ClientID),
>             true);
> ================
>
> Hope this helps.
>
> Regards,
>
> Steven Cheng
> Microsoft Online Community Support
>
>
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