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Question 31   What is the difference between convert.tostring and .tostring()

Both these methods will convert the value/object to string. the main difference is . tostring() will throw an exception when it try to convert a null object. convert.tostring() is the most preferred method out this two



Question 32   What is native image generator

By default a .net code is compiled to msil. clr will use jit to convert this code to machine specific code and then execute it. the native image generator (ngen.exe) will directly compile the code to machine specific code. this will improve the performance of the application.




Question 33   How can we handle different versions of assembly

This can be achieved by mentioning “bindingredirect” in web.config.



Question 34   What is codedom

Codedom which stands for code document object model is an object model which is used to develop language independent source code. once developed codedom can be converted to any .net language.
codedom is mainly used for template code generation and dynamic code compilation



Question 35   How can we make windows api calls in .net

In .net windows api calls can be invoked using platform invoke services which is also known as pinvoke.



Question 36   Windows api in .net is unmanaged code or managed code.

Windows api calls are executed by the operating system directly which are outside the control of clr. so they are unmanaged code in .net.




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