Regular Expressions Articles

Category - Regular Expressions

04 Oct 2018 Mudassar Khan 0 Comments 27489 Views

JavaScript Regular Expressions TextBox

Here Mudassar Ahmed Khan has explained with an example, how to validate Date in dd/MM/yyyy format using Regular Expression (Regex) in JavaScript.

There will be two types of Validations:
1. Date format dd/MM/yyyy validation: The Date of Birth (DOB) will be first validated for dd/MM/yyyy format using Regular Expression (Regex).
2. 18+ Minimum Age validation: The difference between the age entered in the TextBox and the Current Date is minimum 18 years.

01 Aug 2018 Mudassar Khan 0 Comments 78470 Views

ASP.Net ASP.Net Validators Regular Expressions Email Validation

Here Mudassar Ahmed Khan has explained with an example, how to validate Email Address using Regular Expression Validator in ASP.Net.

06 Jul 2018 Mudassar Khan 0 Comments 13912 Views

ASP.Net Regular Expressions Mobile

Here Mudassar Ahmed Khan has explained with an example, why Request.Browser.IsMobileDevice property does not work in ASP.Net.

ASP.Net does have in-built mobile phone browser detection capabilities and you can check whether user is using a Mobile phone browser or Desktop browser using the Request.Browser.IsMobileDevice property.

But with time, new Operating Systems and Mobile devices are being launched, thus since the information for is not present the Mobile Devices are not being detected.

06 Jul 2018 Mudassar Khan 0 Comments 24714 Views

ASP.Net Regular Expressions MVC Mobile

Here Mudassar Ahmed Khan has explained with an example, how to detect mobile phone browser (mobile device) in ASP.Net MVC Razor.

With the help of Regular Expressions (Regex), one can easily detect and find whether the User is using a Desktop browser or mobile phone browser (mobile device) in ASP.Net MVC Razor.

15 Jun 2018 Mudassar Khan 1 Comments 38717 Views

ASP.Net ADO.Net SQL Server Regular Expressions MVC Data Annotation

Here Mudassar Ahmed Khan has explained with an example, how to implement dd/MM/yyyy Date format validation for TextBox in ASP.Net MVC Razor.

The RegularExpression Data Annotation will be used along with Regular Expression (Regex) for enforcing dd/MM/yyyy Date format validation for TextBox in ASP.Net MVC Razor.

14 Jun 2018 Mudassar Khan 1 Comments 51496 Views

ASP.Net SQL Server ASP.Net Validators Regular Expressions Stored Procedures

Here Mudassar Ahmed Khan has explained with an example, how to insert Date in dd/MM/yyyy format in SQL Server Database Table using ASP.Net with C# and VB.Net.

This article will illustrate how to insert Date in dd/MM/yyyy format in Database Table using Stored Procedures and the SQL Server DATEFORMAT command in ASP.Net.

12 Jun 2018 Mudassar Khan 0 Comments 6515 Views

JavaScript Regular Expressions TextBox

Here Mudassar Ahmed Khan has explained with an example, how to perform simple Email validation using JavaScript.

The value of the Email TextBox will be validated with the help of Regular Expressions in JavaScript.

12 Jun 2018 Mudassar Khan 1 Comments 86678 Views

C#.Net VB.Net Regular Expressions Windows Forms TextBox

Here Mudassar Ahmed Khan has explained with an example, how to perform Date format validation (dd/MM/yyyy) using Regular Expression in C# and VB.Net.

The User will enter Date in TextBox and when the Button is clicked, the Date will be tested against the Regular Expression for dd/MM/yyyy format and if invalid, a Message Box will be displayed.

12 Jun 2018 Mudassar Khan 0 Comments 63764 Views

C#.Net VB.Net Regular Expressions Windows Forms TextBox

Here Mudassar Ahmed Khan has explained with an example, how to perform Email Validation using Regular Expression in C# and VB.Net.

The User will enter Email Address in TextBox and when the Button is clicked, the Email Address will be tested against the Regular Expression and if invalid, a Message Box will be displayed.

09 Jan 2018 Mudassar Khan 0 Comments 20179 Views

ASP.Net JavaScript jQuery ASP.Net Validators Regular Expressions

Here Mudassar Ahmed Khan has explained with an example, how to use Regular Expression (Regex) to accept/allow Alphanumeric characters i.e. Alphabets (Upper and Lower case) and Numbers (Digits) and Space in TextBox in ASP.Net using:-

1. RegularExpression Validator.
2. JavaScript.
3. jQuery.

03 Jan 2018 Mudassar Khan 0 Comments 38970 Views

ASP.Net JavaScript jQuery Regular Expressions

Here Mudassar Ahmed Khan has explained with an example, how to use Regular Expression (Regex) to accept/allow Alphanumeric characters i.e. Alphabets (Upper and Lower case) and Numbers (Digits) and Special Characters in TextBox in ASP.Net using:-

1. RegularExpression Validator.
2. JavaScript.
3. jQuery.

03 Jan 2018 Mudassar Khan 0 Comments 29849 Views

ASP.Net JavaScript jQuery ASP.Net Validators Regular Expressions

Here Mudassar Ahmed Khan has explained with an example, how to use Regular Expression validator for Alphanumeric validation i.e. Alphabets (Upper and Lower case) and Numbers (Digits) in TextBox in ASP.Net.

03 Jan 2018 Mudassar Khan 1 Comments 38723 Views

ASP.Net JavaScript jQuery ASP.Net Validators Regular Expressions

Here Mudassar Ahmed Khan has explained with an example, how to use Regular Expression (Regex) to accept/allow only Alphanumeric characters i.e. Alphabets (Upper and Lower case) and Numbers (Digits) in TextBox in ASP.Net using:-

1. RegularExpression Validator.
2. JavaScript.
3. jQuery.

02 Jan 2018 Mudassar Khan 0 Comments 63063 Views

JavaScript jQuery Regular Expressions

Here Mudassar Ahmed Khan has explained with an example, how to use Regular Expression (Regex) to allow only Numbers (Digits) and Space character in JavaScript and jQuery.

02 Jan 2018 Mudassar Khan 1 Comments 80832 Views

JavaScript jQuery Regular Expressions

Here Mudassar Ahmed Khan has explained with an example, how to use Regular Expression (Regex) to allow only Numbers (Digits) and Special characters in JavaScript and jQuery.

19 Apr 2017 Mudassar Khan 0 Comments 65588 Views

ASP.Net Regular Expressions FileUpload MVC

Here Mudassar Ahmed Khan has explained with an example, how to create HTML Fileupload element (<input type = “file” />) using Html Helper and Model in ASP.Net MVC Razor.

By default, there is no Html Helper method for creating HTML Fileupload element (<input type = “file” />) in ASP.Net MVC Razor and hence Html.TextBoxFor function is used and the type Attribute is set to value File.

18 Apr 2017 Mudassar Khan 0 Comments 64684 Views

ASP.Net Regular Expressions FileUpload MVC

Here Mudassar Ahmed Khan has explained with an example, how to perform Client Side validation of HTML Fileupload element (<input type = “file” />) using Data Annotations in Model class and jQuery in ASP.Net MVC Razor.

HTML Fileupload element validation will allow upload of only certain files by filtering them using their extensions. This filtering of files will be done using the RegularExpression Data Annotation attribute in Model class.

02 Dec 2016 Mudassar Khan 0 Comments 52281 Views

ASP.Net jQuery Regular Expressions MVC

Here Mudassar Ahmed Khan has explained with an example, how to use the RegularExpression Data Annotation in ASP.Net MVC Razor.
The RegularExpression Data Annotation can be applied to Model Properties and used for enforcing Regular Expression (Regex) validations in ASP.Net MVC Razor.

02 Dec 2016 17 Sep 2022 Mudassar Khan 0 Comments 83342 Views

ASP.Net Regular Expressions MVC Data Annotation TextBox Validation

Here Mudassar Khan has explained with an example, how to perform Mobile Number (Cellphone Number) TextBox validation i.e. exact Ten Numbers (Digits) validation on Client Side using Data Annotation in ASP.Net MVC Razor.

The Mobile Phone Number (Cellphone Number) validation will be performed using Regular Expression (Regex).

02 Dec 2016 17 Sep 2022 Mudassar Khan 1 Comments 72523 Views

ASP.Net Regular Expressions MVC Data Annotation TextBox Validation

Here Mudassar Ahmed Khan has explained with an example, how to perform Decimal TextBox validation i.e. Decimal Number with maximum up to two decimal places validation on Client Side using Data Annotation in ASP.Net MVC Razor.

The Decimal TextBox validation i.e. Decimal Number with maximum up to two decimal places validation will be performed using Regular Expression (Regex).