Regular expression for validating numbers in asp net
The client side validation is accomplished through the Client Validation Function property.
The client side validation routine should be written in a scripting language, such as Java Script or VBScript, which the browser can understand.
The regular-expression validation implementation is slightly different on the client than on the server. For additional information about validation controls, see Base Validator. (Inherited from Web Control) Copies the properties not encapsulated by the Style object from the specified Web server control to the Web server control that this method is called from.
On the client, JScript regular-expression syntax is used. This method is used primarily by control developers. NET page framework to notify server controls that use composition-based implementation to create any child controls they contain in preparation for posting back or rendering.
If a value is required for the associated input control, use a Required Field Validator control in addition to the Regular Expression Validator control. Since JScript regular expression syntax is a subset of System. Note When you use the Regular Expression Validator control inside an Update Panel control, make sure that the validator control and the control it is associated with are in the same panel. Copies any nonblank elements of the specified style to the Web control, overwriting any existing style elements of the control.
Both server-side and client-side validation are performed unless the browser does not support client-side validation or client-side validation is explicitly disabled (by setting the Enable Client Script property to ). For more information about using the Update Panel control for partial-page updates, see Partial-Page Rendering Overview. For information about how to configure this control so that it generates markup that conforms to accessibility standards, see Accessibility in Visual Studio and ASP. This method is primarily used by control developers.
The following two mutually inclusive properties list out the error message: Complex pages have different groups of information provided in different panels.
The server side validation routine should be written in any . The summary displays the values of the Error Message property of all validation controls that failed validation.For more information, see Script Exploits Overview.The Regular Expression Validator control checks whether the value of an input control matches a pattern defined by a regular expression.This type of validation allows you to check for predictable sequences of characters, such as those in email addresses, telephone numbers, and postal codes.