Top "Postback" questions

A postback is a technique in web development in which a page sends an HTTP POST back to the same form on the server.

Preventing ModalPopupExtender from closing during/after PostBack

How do I prevent my asp:ModalPopupExtender from closing after or during a postback to the server?? Here is my …

javascript asp.net ajax postback modalpopupextender
ASP:TextBox Value disappears in postback only when password

I have an asp.net textbox like this: <asp:TextBox ID="PINPad" runat="server" Columns="6" MaxLength="4" CssClass="PINTextClass">&…

asp.net textbox postback passwords
OnClick events not working in ASP.NET page

I am having a aspx page which inherits from a master page. In the master page I have a button …

c# asp.net .net postback dopostback
User control inside update panel causing full page postback

I have a user control with linkbuttons (used for paging) and a repeater inside an update panel. The paging works …

asp.net updatepanel postback partial-postback
How to know if I am in a postback?

I've read in JSF docs that ResponseStateManager has a isPostBack() method. How (and where) can I have an instance of …

jsf postback
Invalid postback or callback argument. Why?

So I get the exception Invalid postback or callback argument. Event validation is enabled using in configuration or <%@ Page …

asp.net postback linkbutton
Why won't my LinkButton inside a GridView raise its OnClick event?

I have a LinkButton inside a GridView (via an TemplateField). No matter what I try, the LinkButton will not invoke …

asp.net events postback linkbutton
ASP.NET on .NET 4 causing IE11 throw _doPostBack is undefined javascript error

Edit: The site is on Windows Server 2003, hence cannot be upgraded to .NET framework 4.5. Our web site is serving ASP.…

javascript asp.net .net postback internet-explorer-11
How to keep data through postbacks?

I am working on a ASP.NET/C# Website. I am reading data from a database, saving it in a …

c# asp.net postback state-management
JSF: initial request and postback request?

Please take a look at this below line of code in JSF <h:inputText id="name" value="#{customer.name}" /&…

java jsf jakarta-ee postback