500 Important C# and.NET interview questions asked to C# developers

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Can you explain ASP.NET page life cycle?

What are Httphandlers and HttpModules?

What is the difference between Httphandlers and HttpModules?

How do we write a Httphandler?

How do we write anHttpModule?

Can you explain how ASP.NET application life cycle works?

In which event are the controls fully loaded?

How can we identify that the Page is Post Back?

What is the use of @ Register directives?

What is the use of Smart Navigation property?

What is AppSetting Section in “Web.Config” file?

Where is View State information stored?

How can we create custom controls in ASP.NET?

How many types of validation controls are provided by ASP.NET?

How can we force all the validation control to run?

How can we check if all the validation control are valid and proper?

If client side validation is enabled, will server side code still run?

Which JavaScript file is referenced for validating the validators at the client side?

How to disable client side script in validators?

How can I show the entire validation error message in a message box on the client side?

If a validation is very complex what will you do?

Can you explain “AutoPostBack”?

How can you enable automatic paging in Data Grid?

What is the use of “GLOBAL.ASAX” file?

What is the difference between “Web.config” and “Machine.Config”?

What is a SESSION and APPLICATION object?

What is the difference between ‘Server.Transfer’ and ‘response.Redirect’?

What is the difference between Authentication and authorization?

What is impersonation in ASP.NET?

What are the various ways of authentication techniques in ASP.NET?

Can you explain Forms authentication in detail?

How do I sign out in forms authentication?

If cookies are disabled how will forms authentication work?

How do we implement windows authentication?

How can we do single sign on in ASP.NET?

Can you explain membership and role providers in ASP.Net 2.0?

Can you explain master pages concept in ASP.NET?

So how do you create master pages?

What is the concept of Web parts?

What are partial classes in ASP.NET?

What is the difference between data grid and grid view?

What is difference between Grid view, Data list, and repeater?

From performance point of view, how do they rate?

What is the method to customize columns in Data Grid?

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