The .Net Framework is designed to fulfill the following objectives:

•  A consistent object-oriented programming environment, where object code can be stored and executed locally, executed locally but Internet-distributed, or executed remotely on a server.
• A code-execution environment that minimizes software deployment and versioning conflicts.
• A code-execution environment that eliminates the performance problems of scripted or integrated environments and guarantees safe execution of code, including code created by an unknown or semi-trusted third party.
• Developers can experience consistency across widely varying types of applications, such as Windows based and Web-based applications. 
• Build all communication on industry standards to ensure that code based on the .Net Framework can integrate with any other code to provide interoperability between languages.  
• To provide GUI in GUI manner.