Asp .NET MVC Regular Expression

Question

I want to validate my model to accept only 10 numbers and the number should not start with 700. Any idea how can I do it using data annotation?

[Required(ErrorMessage = "This field is required ")]
[StringLength(10, ErrorMessage = " CR should be 10 digits")]
public string CR_Number { get; set; }

Try: ^(?!700)\d{10}$

anubhava
– anubhava

2021-03-10 08:32:31 +00:00
Commented Mar 10, 2021 at 8:32 — anubhava
– anubhava, Commented Mar 10, 2021 at 8:32
refer this link regular expression for accepting 10 digits

Muthu mani
– Muthu mani

2021-03-10 10:28:53 +00:00
Commented Mar 10, 2021 at 10:28 — Muthu mani
– Muthu mani, Commented Mar 10, 2021 at 10:28
refer this link accepting 10 digits

Muthu mani
– Muthu mani

2021-03-10 10:30:40 +00:00
Commented Mar 10, 2021 at 10:30 — Muthu mani
– Muthu mani, Commented Mar 10, 2021 at 10:30

Indrit Kello · Accepted Answer · 2021-03-10 08:49:16Z

1

 [Required(ErrorMessage = "This field is required ")]
 [StringLength(10, ErrorMessage = " CR should be 10 digits")]
 [RegularExpression("^(?!700)\d", ErrorMessage = "CR should not start with 700.")]
 public string CR_Number { get; set; }

Or you can merge the last two as suggested in the comments "^(?!700)\d{10}$".

edited Mar 10, 2021 at 8:49

answered Mar 10, 2021 at 8:40

Indrit Kello

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2 Comments

Sarah Aldosari Over a year ago

Can you please tell me how can I make it starts with 700 and accept only 10 digits?

Indrit Kello Over a year ago

^(700)([0-9]{7})$

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