.net - Difference Between An F5 Browser Refresh And Postback?
Jul 22, 2010
I am dynamically creating dragrids in different rows of an existing datagrid in asp.NET
My generated datagrids have a column which is TemplateColumn (a CheckBox Column).
In my parent datagrid, I have a template column with checkboxes. when I check or uncheck the value of the check box, the check_change method is called (autopostback is set to true), the dynamically generated datagrids lose the checked checkboxes (the checkboxes are all unchecked again). However, if i check any of the checkboxes of the child (dynamically generated) grids and press F5, it refreshes the page but still I have my checked checkboxes.
What's happening ?? how is post-back different from refresh F5??? understanding this might help me fix my problem here :DataGrid not being altered!
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May 19, 2010
My question is - what is the difference between page refresh (if I press f5) and postback (If I press a button)?
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Sep 17, 2010
While going through MSDN I found that in button properties useSubmitBeheviour there is written that if useSubmitBeheviour is true then it cause the Button control to use the browser's submit mechanism and false then the ASP.NET page framework adds client-side script to the page to post the form to the server.
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Jan 8, 2011
Button.UseSubmitBehavior property is used to gets or sets a value indicating whether the Button control uses the client browser's submit mechanism or the ASP.NET postback mechanism.
So, What is the difference between client browser's submit mechanism and the ASP.NET postback mechanism?
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Jul 24, 2010
Anyone with similar conclusion? GridView does not databind/refresh upon postback unless the postback is called by itself?
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Mar 31, 2010
I have insert page - data is getting inserted properly with all validations .But the main problem is that after insert if anyone clicks on the refresh button on the Internet explorer browser , data gets inserted again the same data which insert on submit button.
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Mar 25, 2010
Is there any way to get click event of refresh button of browser ?
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Dec 19, 2010
I have an ASP.NET/C# application that exports some data into an Excel spreadsheet using COM interop at the click of a Button control. When I click the button, Excel is opened with the generated spreadsheet. For what it's worth, here is the button code:
<asp:Button ID="export" Text="Export to spreadsheet" runat="server" OnClick="Export_Workbook" />
This works fine, except when I click the button, close the subsequent spreadsheet, and refresh the page. When the page is refreshed after clicking the button, the call to Export_Workbook() is made again and so the spreadsheet opens again. Firefox, for example, says this when you refresh: "To display this page, Firefox must send information that will repeat any action (such as a search or order confirmation) that was performed earlier." This is something I want to avoid.
I'm sure there's a better way to accomplish what I'm trying to do, I'm just not sure what the best approach is.
Edit
I've accomplished this by doing the following:
protected void Export_Workbook(object sender, EventArgs e)
{
Response.Redirect(Request.Url.AbsolutePath, false);
ItemList.Prepare_Workbook();
}
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Dec 1, 2010
have looked around for an answer to this but not quite found what I need.
The main (home) page of my web app has a field on it indicating the last time an SSIS package was run. This is done under the page load event and the code reads a sql server table to pull of the date and time.
The problem is, if the date and time is updated and I then close teh web browser and re-open it and displays the main (home) page, the time displayed has not been updated. I have to either hit F5 or clear the temp internet files using the options under IE.
I found some code which refreshes the page automatically once every 5 seconds or at set intervals but this is not what I want to do. I just the page to be refreshed upon loading it.
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Oct 16, 2010
In my .aspx page, I use a div including some repeaters and datalists without update panel.I bind all of them in page_load when Not IsPostBack condition is met.by default page is ok but if I push refresh button on browser regardless which browser or simply push F5 it shows header but not that div.
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Aug 27, 2010
can you define autopostback and postback and it's differences and which web server control support autopostback and postback and also the difference between postback and callback?
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Jun 10, 2010
Is there a difference, or are the terms synonymous? i could only find the difference between a full postback and a callback. I'm already aware of how a full postback is different.
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Mar 20, 2010
how to disable functionality of refresh (logo or button) in browser
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Mar 20, 2010
I have a Shopping Cart Summary User Control that doesn't update without a full browser refresh.
The scenario is:
I have a DataList in one User Control that displays Product data with an ItemCommand event for an 'Add To Cart' button.
[Code]....
When the 'Add to Cart' button is clicked, the page reloads and another User Control containing the Shopping Cart Summary should be updating. However, the Cart summary doesn't fully update until a full page refresh occurs.
I should add, that the Cart Summary is "located" on a master page whereas the Product List is in the Content Placeholder of a web form based on the same master page.
I can provide more of my code if required but I'm initially reluctant incase I'm making a noobish error!
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Nov 16, 2010
In our application we need to handle browser close event. When a user directly closes the browser, we should give him an alert message and stop him by directly closing the window based on some conditions. This we have handled through body onunload event. The problem is we are getting the alert message but after showing the alert message the window gets closed.
Is there any way to stop closing the window on click of browser close event?
And also when the page is refreshed, the last performed action is getting fired again.
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Dec 14, 2010
Whats the diffrence between pageload and page postback in asp.net
how it affect on page life cycle.
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May 3, 2010
There is a asp:Label in the page for showing message from server.
The message can be sent by server at any time.
I added a handler to update the Label's Text, like following:
void MessageReceived(object senders, EventArgsMessageReceived e)
{
lblMessage.Text = e.Message;
lblMessage.DataBind(); //To show the message
}
I am sure the break point of 'lblMessage.Text = e.Message;'' is hitted.
But the DataBind() seems not work, and the label isn't updated.
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Mar 9, 2011
Project
I'm running a single page (default.aspx) web site in Visual Studio 2010. I have a few other projects in the solution, but they're all taken out of the build queue at the moment. I'm using Visual Studio Development Server as the web server (I haven't tried IIS yet). I'm using the HTML5 Boilerplate from [URL] I'm testing in Chrome and IE8
Problem
Visual Studio 2010 is outputting "Debug" information to the Output window every time I refresh my browser. Whilst this isn't a problem in itself, it seems to be extremely slow in doing so... it takes around 4 seconds to show the page in full from initial refresh.
I've noticed that the "Script Documents" folder appears in my solution view, and some files (notably JS files) seem to take a while to show up. I've tried removing all the JS and CSS file references from my page, but it still does it.
So, to troubleshoot I've created an index.aspx page with no content apart from the generic ASP.Net template code, set this as the start page, but it still takes just as long to load up as the other page.
As a last resort, I've created a new project and tried it with no changes to the default page - still the same, takes a few seconds to finish loading in either browser.
The strange thing is that this happens even when I stop debugging in Visual Studio and browse directly to the URL on the ASP.NET Development server.
Output Windows contents when page is refreshed
[Code]....
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Feb 12, 2010
I need to implement a "preview" functionality where people make changes to a form, click a button and a pop-up window displays the preview while the original form retains the user's changes in the various <textarea's. Right now, the preview is working, but when they come back to the form, their changes are gone, the page has refreshed. How do I prevent the page from refreshing? I need to go to the server to get the URL to the preview page.
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Apr 4, 2011
The function window.opener.location.reload(); is working fine with IE but not refreshing parent page in mozilla firefox browser. how to refresh parent page in cross browser/browser independent.
i have got this function:
[code]....
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Mar 9, 2010
How to force Refresh( F5) conditaionally wehn the pages meet new design.
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Jan 28, 2010
I developed a web application in asp.net.I have a module for saving values to database after clicking the button event.Thats working successfully.After that when i clicked the browser's refresh button the values reinserted to the table each time.How can i avoid this .Which is the code for this solution?
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Feb 24, 2011
I receive the error message "Error: Your session has expired. Please refresh your browser." When I export a table in ASP to Excel. I know for a fact that the correct data to export exists. Everything works fine except for this error message. I don't see how the session on a browser could run out in a matter of the one second it takes for the Excel file to pop up
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May 17, 2012
Do Not refresh the page if i press the f5 button in asp.net.
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Sep 2, 2010
In my web page i got a button and when this button is clicked it will display message on the label.
Example : label text changed from "Start" to "Processing to "Completed". Therefore I want to refresh the label text on my web page so from user site they are able to see the text on Label is changing..
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