I have a aspx web page. if i change something in the page and when it refreshes , does it load just the child page or even the master page?? What function one should use to refresh Master page as well!! I hope i am clear!!! Thanks guys!
The Page_Load of the child page will fire first followed by Page_Load of the masterpage. You may find this slightly counter intuitive. I know I did!
If you are relying on something in your master page being accessible from the code-behind in your child page you should reference it later eg in the Page_PreRender event of the child page.
Master page should always refresh. Not sure what you are experiencing?
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Currently, in a dot net project, i have a master page & a child page. I have given various options, like textbox, combo box etc, on a master page with a submit button. Now i have a child page where i want to process the request sent by master page.
I have heard that retaincontrolstate is used like
private void retainControlState()
{
}
But currently i am not recieving the values from the masterpage onto the child page, not even the click event of the master page.
How can i make the click of master page button to send the request to the child page ?
You should:
Make sure you can access the controls on your master page from the page, e.g. make them public fields
In the Page_Init of your page, cast your the Master property to its proper type (or just use the MasterType directive - https://msdn.microsoft.com/en-us/library/ms228274(v=vs.100).aspx)
Then you can hook up the event handler in your page to the controls on your master page
ControlState has nothing to do with this.
Does it make sense to handle stuff on your master page in your content page's code-behind though? Why not simply do this in the Master page's code-behind?
i was trying to find the sequence of event between Master page and aspx page.
I came to know that unload event of master page calls before then unload event of ASPX page.
I already read this in many websites but i am looking for reason behind it.
If someone has an idea about this then kindly help me.
One good reason I found is this::
Master pages behave like child controls on a page.
What this means is that the way any Control events are raised by the Asp.Net page life cycle, same way it will raise events for Master pages.
Consider for example, the Init event. MSDN says that the Init event of individual controls occurs before the Init event of the page. And thus, the Init event of Master page occurs before the Init event of page.
One more example, consider the Load event.MSDN says that the Load event of individual controls occurs after the Load event of the page. Therefore the Load event of Master page occurs after the load event of content page.
This is indeed confirmed by MSDN::
Master pages behave like child controls on a page: the master page Init event
occurs before the page Init and Load events, and the master page Load event
occurs after the page Init and Load events
So, now you can say that the way Unload event is raised for controls, it will be same for master page.
The Unload event is raised for each control first and then for the page. So this is the reason why Unload event of master page is called before Content page.
I have a .ascx page in when I redirect from another page, page_Oninit and Page_load events are occured and all controls loaded with initializecomponents().
But the page is not showing in the browser. Do you have any idea why this occur?
.ASCX is user control. When we add it into our page say 'Default.aspx' it becomes the part of that page but not whole page. So you can not use .ASCX as standalone. If you want to see it,you have to place it into some page and then only you can view it from browser.
I'm using ASP.NET 4.0 with a LoginStatus control in a Master page. When the status is Login and I click the link, the current page is attempted to be reloaded. I can see that IsPostBack=True.
If I use Set Next Statement to avoid my code in Page.Load the redirect to Login.aspx goes without a hitch, otherwise the current page tries to reload and for some reason it fails.
From Page.Load, what is the best way to detect that LoginStatus has been clicked? A click event handler won't work since it fires too late. IsPostBack won't work either (on its own). I do have a BaseMasterPage class that is inherited by my Master page, but again, the Master page loads after Page.Load in all of my pages.
Do I have to handle this click in every one of the pages that use this Master page?
Btw, I also have a BasePage class that all of my pages inherit. I'm just not sure how to detect that LoginStatus has been clicked - and if it has, how to handle it. Would I force a Redirect? That seems like overkill...
The problem here was being caused by an <img src= that did not exist on a remote server. This was causing my page to load twice. The first time through, IsPostBack would be True. The second time through it was False.
This is why I was unable to figure out why the redirect wasn't happening on its own. I'm marking this question as answered even though I should probably just delete the whole question. :S
I've seen code to handle MasterPage events in the content Page, but if I'm loading a UserControl dynamically into the Page, can I handle the event in the UserControl instead?
Basically I have a button on the MasterPage, when it's clicked I need to make the UserControl do something, such as display text or change a value in a form.
Failing that, is it possible to make an event from one dynamically loaded UserControl fire in another on the same page? I could then replace the button in the MasterPage with one in another UserControl
Thanks all.
This is very similar to this stackoverflow question.
The answer to that question should also apply to yours: your Page knows its master and knows its child controls. It can wire-up a handler on the child control to an event on the master page, so the child control can perform necessary functionality when the even occurs on the master page.