How to loop through the FormCollection to check if textboxes have values?

Question

I have a search page that has 6 textboxes which i pass as FormCollection to the action in the controller. I dont want to search for records if ther is no values in textboxes.

Is there a way to loop through all textboxes in FormCollection to check which ones have values in them?

I am a student in the college and this project is part of my summer experience program. I realize that this is a newbie question :) Thank you!

A full answer with multiple methods can be found [here](http://stackoverflow.com/questions/762825/how-can-a-formcollection-be-enumerated-in-asp-net-mvc). — Rhys Stephens, Dec 14 '15 at 01:27

score 12 · Accepted Answer · answered May 28 '10 at 21:22

You can loop through the FormCollection like this:

foreach( string key in forms.Keys )
{
    ...
}

However, note that the browser only sends you names and values. It does not send you the types of inputs, so you have no way to check if the value is a checkbox, unless you know all checkboxes names in advance. But if that's the case, you don't need to loop - just take them out of the collection by name.

score 1 · Answer 2 · edited Oct 06 '16 at 19:05

1

List<string> list = new List<string>();
for(int i= 0; i< form.AllKeys.Count(); ++i)
{
    list.Add(form.Get(i));
}

This will give you all the actual values for each key

edited Oct 06 '16 at 19:05

Jonathan

3
2

answered Dec 04 '12 at 20:20

Kai CriticallyAcclaimed Cooper

958
2
15
27

How to loop through the FormCollection to check if textboxes have values?

2 Answers2