how to turn off dep(data execution prevention) for an application with c#?

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C#3.0

C#

hi i created an application , that returns access violation error exception , i want to turn off dep(data execution prevention) for this application , i know that i can turn it off with My computer->properties->advanced->performance(settings)->data exception prevention and etc
ok?
but i want to do this job with c# code and .net , i know that this job will be done with edit boot.ini file ,ok? in boot.ini file must find (NoExecute=AlwaysOn)
and replace AlwaysOn with AlwaysOff,but it turn off dep for all applications,i want to turn it off only for My application,ok?and i want to do this with c# code in startup of My application,any one can help me?