How do I find " " within a list of strings?

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I have a list that contains {"12",
" ",
"13",
"10"
};
I would like to remove " " from my list, not just one at a time, but all at once, if you have more than one term " "

What I have tried:

// textInt_FNspt_N1 it is my textbox
List<string> N1 = new List<string>();
private static bool AcharOvazio(String s)
{
return s.ToLower().Contains("");
}

private void btn_FNspt_calnspt_Click(object sender, EventArgs e)
{
N1.Clear();

string[] ns = textInt_FNspt_N1.Text.Split('\n');

N1 = ns.ToList();
N1.RemoveAll(AcharOvazio);
}

Posted 9-Mar-20 16:43pm

João Henrique Braga

Updated 9-Mar-20 21:32pm

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2 solutions

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OriginalGriff · Accepted Answer · 2020-03-09T21:33:00

Solution 2

Ehsan is on the right path, but it can be simplified (and corrected for syntax) to

C#

N1 = ns.Where(x => !String.IsNullOrWhiteSpace(x)).ToList();

Posted 9-Mar-20 21:33pm

OriginalGriff

Updated 9-Mar-20 22:50pm

v2

Comments

George Swan 10-Mar-20 4:35am

shouldn't that be String.IsNullOrWhiteSpace?

OriginalGriff 10-Mar-20 4:50am

Fixed - thanks!
In my world, whitespace is one word ... :laugh:

João Henrique Braga 10-Mar-20 13:32pm

thanks!!!!!!!!!! <3

OriginalGriff 10-Mar-20 13:37pm

You're welcome!

Ehsan Sajjad · Accepted Answer · 2020-03-09T18:59:00

Solution 1

You need to use the method

C#

String.IsNullOrEmpty(string parameter)

like:

C#

private static bool AcharOvazio(String s)
{
  return String.IsNullOrEmpty(s.Trim());
}

we can also do it directly inline with Linq like:

C#

N1 = ns.Where(x => !String.IsNullOrEmpty(x.Trim()))ToList();

Posted 9-Mar-20 18:59pm

Ehsan Sajjad

Updated 9-Mar-20 19:01pm

v2