We Keep Coding

ASP.net Redirect to the calling page

I have a page that calls another page with some query string parameters. I want to return back to that page after clicking on a button.
I have to mention that I write that code in a user control and I don't know what page called that second page.
Is there something like Back button in browsers?

Simplest way use javascript on client side with
window.back();
For server side you need to save the url referer in page_load:
if(!Page.IsPostback)
{
ViewState["GoBackTo"] = Request.UrlReferrer;
}
and on a button click using Response.Redirect:
Response.Redirect( ViewState["GoBackTo"].ToString() );
edit: please note ppumkin's comment below!

You could look at Cross Page Posting.
Alternatively, if you are generating the link programatically you could include the returnUrl in the url e.g. http://localhost/secondpage.aspx?returnurl=firstpage.aspx
You can then read this querystring parameter in the secondpage and perform as redirect back once your work is done.

You can use the Request.UrlReferrer, but it is not necessarily sent from the client all the time:
Response.Redirect(Request.UrlReferrer.AbsoluteUri);

put this line of code on the page load event
Btn_Back.Attributes.Add("onClick", "javascript:history.back(); return false;");

How can i invoke javascript function within the webbrowser control?

I want my website/webpage to be navigated to a new window which displays the report.Even the Website gets redirected to a login page rather than the report page the moment when the javascript function is invoked.I have given my requirement below.can anybody help me out in finding the solution?
InvokeScript doesnot work in the following case.
<a onclick="return showReport('RPTType=SReport');" id="ctl00_tbr_lnkbtnS" class="blckclr" href="javascript:__doPostBack('ctl00$tbr$lnkbtnS','')">S</a>
I used the following statement
webBrowser1.Document.InvokeScript("showReport", new String[] { "RPTType=SReport" });
Thanks in advance....

I'm not sure I understand the question correctly, but I would think you should return false from the onclick event of the link if you're going to handle it with javascript, otherwise it will execute the javascript and then redirect to the href url.

.NET button in div with style="display:none" not firing

I have a pretty simple web-form set up in .Net where I am leveraging jQuery for some of the functionality. I am using the DOMWindow portion for part of the presentation layer.
There is a login form in a div that is set to display:none. When a user clicks a button on the page, it displays the login form. However the .Net button for the login form will not fire it's event when display is set to none. If i take this out, it fires fine. I have also tried using the visibility attribute, but no luck.
the div code is:
<div id="Login" style="display:none;">
The launching code is:
click here to login.<br />
the jQuery code is:
function LaunchLoginWindow() {
$(document).append("#Login");
$.openDOMWindow({
loader: 1,
loaderImagePath: 'animationProcessing.gif',
loaderHeight: 7,
loaderWidth: 8,
windowSourceID: '#Login'
});
}
Any help or explanation that anyone can offer is appreciated.
I noticed i had some code in there defining a client-side function on the Login div. I removed this so as to eliminate it as a possible issue.

I can see in your code that you are appending the div #Login but not setting its style property back to normal like block so. Set it back to block and i am sure it will work
try adding somthing like:
$(document).append("#Login").show();

OK, after playing around with this using firebug, I found the issue: When the jQuery plug-in DOMWindow creates its display layer, it appends to the HTML node of the DOM, which places the control outside the asp.net form tag. Therefore the button and actions associated with it via the DOMWindow are not recognized by .Net. So i edited the DOMWindow source file to append to the DOM form node rather then the html node.
The drawback is that the source has now been customized and will have to be QA'd thoroughly, especially if any further changes are made. But I hope to manage this effectively via commenting in the file.
Hope this helps anyone else who hits this issue.
pbr

Run javascript function after Server-Side validation is complete

Ok, I've got a lightbox with a small form (2 fields) in it, inside an UpdatePanel, and I want to close this lightbox (must be done via javascript) when the 'Save' button is pressed.
However, there is a need to have a server-side CustomValidator on the page, and I only want to close the lightbox if this returns as valid.
Does anyone know a way to trigger javascript (or jQuery) code from a server-side validator?

You can add a little snippet of code using the ScriptManager to execute after the response comes back to the UpdatePanel.
if (Page.IsValid){
ScriptManager.RegisterStartupScript(
customValidator1,
typeof(MyPageClass),
"closeBox",
"myLightBoxVariableOnThePage.close()",
true);
}

When that server side validator runs, it will send a whole new page to the browser. Anything that was shown in the browser before was destroyed, including any state kept in your javascript. If new page bears a strong resemblance to the old page, you should consider this a happy coincidence.
Therefore, the thing to do here is rather than executing a javascript function, have your CustomValidator make the correct changes to the page on success so that it's rendered to the browser correctly in the first place.

YUI Button initiates Postback Twice

I'm using ASP.NET 2.0 under VS 2005.
Page_Load is getting called twice for my .aspx pages. AutoEventWireup is set to true, but even if I set it to false and manually add the EventHandler, it still gets fired twice.
// also set AutoEventWireup to false
public _Default() {
this.Load += new EventHander(this.Page_Load);
}
// oops -- fired twice
In the Default.aspx page, after the user enters their username & password, I do a redirect to another page, but it seems to redirect back to the Default.aspx page.
I don't have any <img> tags without a src. The tags that have a RunAt="server" attribute are <asp:PlaceHolder>.
For everything else, I use YUI CSS and JavaScript. I don't have any <ASP:> controls.
What am I missing?
Update
I'm using the Button widget from the YUI library. If you specify "submit" in both Javascript and in the HTML code for a button, then when you submit, that JavaScript event gets generated twice.
This was a pain to figure out: I started commenting out bits and pieces of JavaScript and CSS (especially the includes), until the event fired only once.

A redirect is a postback in ASP.NET. If you trigger an event(enter user name and click, 1 postback), redirect to the same page(2nd postback). Am I understanding you correctly?

Are you by any chance using this.PreviousPage in the redirected Page ?

So I'm using the YUI framework. And I'm using the Button widget. If you specify "submit" in both Javascript and in the HTML code for a button, then when you submit, that Javascript event gets generated twice. Just remove one of the submits.
This was a pain to figure out: just start commenting out bits and pieces of Javascript and CSS (especially the includes), until the event fires only once. That way you can see what is causing the Page_Load to get fired twice.