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This How To shows how you can use regular expressions within ASP. Regular expressions are a good way to validate text fields such as names, addresses, phone numbers, and other user information.

You can use them to constrain input, apply formatting rules, and check lengths. This How To shows how you can use regular expressions within ASP. Objectives Overview Using a Regular Expression Validator Control Using the Regex Class Common Regular Expressions Additional Resources If you make unfounded assumptions about the type, length, format, or range of input, your application is unlikely to be robust.

To avoid such vulnerability, you should validate text fields (such as names, addresses, tax identification numbers, and so on) and use regular expressions to do the following: Regular expression support is available to ASP. If you capture input by using server controls, you can use the Regular Expression Validator control to validate that input.

NET applications through the Regular Expression Validator control and the Regex class in the System. You can use regular expressions to restrict the range of valid characters, to strip unwanted characters, and to perform length and format checks.

NET languages (like C#) so we need to find the way to use the AX tools and some valid regular expressions like ^[0-9] $ Where: ^ is the start of the string [0-9] means that will contain numbers from 0 to 9 of any length $ means end of the string Note: I have tried some regular expressions with the decimal point included like ^[0-9] (\.[0-9])? So we need get two sets of numbers around the point to validate them, for that we will use sub Str 6) When you set _amount as 66*33 in the code and execute the job the following window is deployed: 7) When you set _amount as 66514226.33 in the code: We have shown you how to validate decimal numbers using regular expressions with a find method in AX 2012.

The regular expression should match below criteria.

As the OP didn't provided a specific use case or types of numbers, I will try to cover all possible cases and permutations. But, some may argue with this usage, and tell that this is not a real number (you can read more about Signed Zero here).

Net Regular Expression Validator samples to validate Minimum and Maximum text Length and also different configurations like Alphanumeric with special characters, Alphanumeric, Alpha and Numeric configurations. The Drop Down List will be specified as Control Parameter in the Sql Data Source Filter Parameters, so that when a Value is selected in the Drop Down List it will filter the Grid View Records. Here Mudassar Ahmed Khan has explained with an example, how to perform Mobile Number (Cellphone Number) Text Box validation i.e. Now you can ask questions directly to me on my new site ASPForums.

Here Mudassar Ahmed Khan has explained the following three types of character length or count validations for ASP. Here Mudassar Ahmed Khan has explained with an example and attached sample code, how to filter Grid View records using Text Box in ASP. To accomplish the task I have made use of Sql Data Source with Filter Expression along with Filter Parameters to filter records and bind the ASP. The Text Box will be specified as Control Parameter in the Sql Data Source Filter Parameters, so that when text or value is entered in the Text Box and the Search Button is clicked, it will filter the Grid View Records based on Starts with LIKE Search. exact Ten Numbers (Digits) validations using Data Annotations and Regular Expressions (Regex) on Client Side in ASP. A Mobile Phone Number (Cellphone Number) is a numeric value with exact ten (10) digits and such validation can be achieved using the Regular Expression Data Annotation attribute in ASP.

You can constrain the input format by defining patterns that the input must match.

AX 2012: Validating decimal numbers using REGULAR EXPRESSIONS with a find method In this blog we will show you how to use regular expressions in a find method just using some code lines and Sub Strings.

Regular expression for validating decimal numbers