Module development and code questions

I am prepopulating the list of District from a CRM in my Drupal project, but by using Select Option, I am getting an error that 
"The field supports a maximum of 500 options. Please reduce the number of options."

Total District count is 543 in my codebase.
How to remove/increase the limit of the select box

Здравствуйте , подскажите как сделать дополнительное меню на странице , состоящее из подпунктов основного меню, но для конкретной страницы.

Hi, can you help me what i must to do?

How create submenu from main menu, for every page indivudual.

I have main main menu.

http://prntscr.com/kd2q06

How showing additinal subitem in page?

http://prntscr.com/kd2q54

What need create module?view? some preproceccing?

Hi All,

Hoping to get some help solving interactions between a modal webform and underlying parent page webform.

​

if ((Int)$count == 0) {					
	drupal_access_denied();
	module_invoke_all('exit');
	drupal_exit();
}


​

Is giving an infinate loop. Other than doing a redirect instead to an access denied page what is the best solution please?

Hi folk. I'm new to Drupal, and am trying to write a file upload form, so I can get the file contents into another database. 

I wrote a module called FileUpload, that consists of a FileUploadForm. I used a managed_file field in the form, and called it "file". Now I'm trying to read the file contents, and display them via drupal_set_message, but I don't know enough about the file api, and documentation is somewhat scant. 

Here's what I have so far: 

Hi,

is it possible to disable quick edit function on the instances of my custom field ?

thank you in advance