Yes, We can create user app domain by calling on of the
following
1. Public static AppDomain CreateDomain(String friendlyName)
2. Public static AppDomain CreateDomain(String friendlyName,
Evidence
securityInfo)
3. Public static AppDomain CreateDomain(String friendlyName,
Evidence
securityInfo, AppDomainSetup info)
4. Public static AppDomain CreateDomain(String friendlyName,
Evidence
securityInfo, String appBasePath, String
appRelativeSearchPath, bool
shadowCopyFiles)