How to check for space in a password regex having multiple condition

Question

Hi
I have a requirment where in the password field should accept all keys except space, it should have atleast one number , length should be 6 to 50
I tried following but did not work
1) Regex = @"^.*(?=.{6,50})(?=.*\d)(?=.*[a-zA-Z]).*$"

2) ^(?=[^\s])(?=[^\s]{6,50})(?=[^\s]*\d)(?=[^\s]*[a-zA-Z]).*$

Following are my test input text ( test case no 2 is having space at end)

 ShouldNOT654321-1
ShouldNOT654321-2
Should654321-3
ShouldNOT 654321-4
Should NOT654321-5
S houldNOT654321-6
ShouldNOT65432 1-7
S houldNOT 654321-9
Should654321
1Should654321

Please help.

Thanks in Advance.
Rajendra Dewani

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Regards Rajendra Dewani

Answer 1

Hi,

Try below code, it accepts all special characters, except white space.

tested will all above conditions, and it works.

      

            string input_to_test = @"ShouldNOT 654321-4";

            Match match_object = Regex.Match(input_to_test, @"^(?([^ ]{6,50})(?(\d+)(\d+\S+)|(\S+\d+\S*)))$");

            if (match_object.Success)

                Console.WriteLine("Success");

            else

                Console.WriteLine("No Luck. Try again...!");

        

 

Answer 2

Hi Dheeraj,

Thank for the regex.
The regex is working but i forgot one condition.
the password should have atleast one char and one numeric value

Please help to add this condition .

Thanks in advance.

Regards
Rajendra

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Regards Rajendra Dewani

Answer 3

I found one issue with the regex is , it is allowing empty value

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Regards Rajendra Dewani

Answer 4

Would this work ?

Part one of the pattern asserts that there's at least one digit ahead
Part two asserts at least one a-zA-Z
Part three matches 6 to 50 non space chars.  From parts one and two we know that the non space chars contain at least one digit and at least one  a-zA-Z

	static void Main()
		{

			// lookahead for one digit
			// lookahead for one a-zA-Z
			// match 6 to 50 non space chars
			string pattern = @"^(?=.*\d.*)(?=.*[a-zA-Z].*)([^\s]{6,50})$";


			string[] test = {
								@" ShouldNOT654321-1",
								@"ShouldNOT654321-2 ",
								@"Should654321-3",
								@"ShouldNOT 654321-4",
								@"Should NOT654321-5",
								@"S houldNOT654321-6",
								@"ShouldNOT65432 1-7",
								@"S houldNOT 654321-9",
								@"Should654321",
								@"1Should654321",
								@"nono",
								@"nonono",
								@"11111111",
								@"1a......",
								@"........."
							};

			foreach ( string s in test )
			{
				Match match = Regex.Match(s, pattern);
				Console.WriteLine("{0}\t{1}", match.Success, s);
		

			}

			Console.ReadLine();
		}

output:

False    ShouldNOT654321-1
False   ShouldNOT654321-2
True    Should654321-3
False   ShouldNOT 654321-4
False   Should NOT654321-5
False   S houldNOT654321-6
False   ShouldNOT65432 1-7
False   S houldNOT 654321-9
True    Should654321
True    1Should654321
False   nono
False   nonono
False   11111111
True    1a......
False   .........

Answer 5

Hi , I tried this and its working Regex = @"^[^ ]*([a-zA-Z\S*])+((\S*[a-zA-Z]+\S*\d+\S*)|(\S*\d+\S*[a-zA-Z]+\S*))$"

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Regards Rajendra Dewani

Answer 6

(1) Try with 1a....
(2) What happened to the 50 char limit ?

Answer 7

Hi Adam,

Regex worked.

it works perfectly on .Net. 
I tried the same on Jquery, in Jquery the behaviour is different. it request of atleat 6 numeric.
any Clue....

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Regards Rajendra Dewani