CODE EXECUTION PROCESS IN ASP.NET

CODE EXECUTION PROCESS IN ASP.NET

STEP 1: Client sends request for the required file to the IIS (Webserver).

STEP 2: IIS will locate the requested file.

STEP 3: If requested file is found, IIS will submit that to ISAPI.dll

     ISAPI.dll is known as ASPX Engine.

    ISAPI means Internet Services Application Programming Interface.

STEP 4: ISAPI.dll will generate a Page Class file, by separating Client side code, Server side code & by adding required methods to execute the server side code.

STEP 5: This Page Class is submitted to Compilers (In case of pre-Compilation is not done).

STEP 6: Compilers will compile the Source Code & will generate MSIL code.

STEP 7: MSIL code will be submitted to CLR.

    CLR will perform 3 tasks here,

1.     Instantiation: Creates object to the respective Page Class

2.     Processing: Executes the Result/Code

3.     Rendering: Converts the Server side code into Client Understandable format (i.e., HTML and JAVASCRIPT).

STEP 8: CLR will generate complete Execution Result.

STEP 9: Execution Result will be delivered to IIS.

STEP 10: IIS will deliver the result to CLIENT.

Once the Result is delivered to the client, The Object at the Server will be destroyed.