How Do I Determine The Size Of A Http Post Transaction To Be Submitted?

I would like to determine te size (in bytes?) of a HTTP POST transaction to be submitted. I have a form with a lot of form data. When all fields are filled with the maximum number

Solution 1:

A 404 error indicates that the location you are trying to post to does not exist, i.e. the URL may be malformed when you post with spaces.

Can you show us the code?

Solution 2:

There's no limit for POST data (except if it's a WCF service or something) - I would look if you are correctly posting the FORM data since 404 is a PAGE NOT FOUND error and has nothing to do with the format...

Any more code to show maybe?