How to Read the Values from the XAML file

Question

Hi ,
I am creating a BuildDefinition from code and Loading the Build Process template.
Now,I want to read and Validate the Build Process template parameter values.When I am debuggig,I could see that these are in Xaml format.
Ex: I have some value "BuildType" as "Daily" in xaml file.I want to read these values and validate them
I dont know what is the bestway to read the values.Can any one please let me know how can we do it.
For your reference,I have attached my sample Xaml file.
Thanks,
Srikrishna