This site uses cookies. By continuing, your consent is assumed. Learn more

130.4m shares

Validating data in textbox c#

opinion

While writing a little tool in C which I will Validating data in textbox c# here at CodeProject some time in the future I needed a TextBox Control with the ability of input validation. Because I didn't find a control like this written in C here at CodeProject I wrote Validating data in textbox c# own and try to present it with my first article!

Validating data in textbox c#

Background

Right Validating data in textbox c# this control performs basic input validation of the characters entered by the user by comparing them to a string containing valid or invalid characters. This property controls wether the characters in the provided ValidationString contain the valid chars or the invalid chars. If this property is set to true uppercase letters are treated differently than lowercase ones.

This event is raised whenever a char failed validation. The event handler presents the char that failed validation f. Validating data in textbox c# validation process takes place in an override of the WndProc method of the base class:.

Validating data in textbox c# displayable keyboard input like Tab, Delete and Return are Validating data in textbox c# treated as valid:. This function never removes linefeed, carriage return or tabs. It returns true if any chars have been removed. The sample project for this article lets you play around with the features of this control.

You can add this control to your toolbox by right clicking on the toolbox and selecting customize hope that's how it is called as I have the german version of VS. Then you can add the assembly containing my control to the list of. NET assemblies Validating data in textbox c# et voila. Please let me know if you find a bug or think that this control is useful.

This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact Validating data in textbox c# author via the discussion board below.

Articles Quick Answers Messages.

Your Answer

C Validating TextBox Control. Martin Validating data in textbox c# Jul Please Sign up or sign in to vote. Download demo project - 7. Capabilities Right now this control performs basic input validation of the characters entered by the user by comparing them to a string containing valid or invalid characters. The behaviour of the ValidatingTextBox control is controlled by three properties: Events Depending on user action various events are fired by the control: The validation process takes place in an override of the WndProc method of the base class: Non displayable keyboard input like Tab, Delete and Return are always treated as valid: WndProc ref message ; if CharValidationSuccessful!

A list of licenses authors might use can be found here.

A TextBox Control with Input...

NET in my Validating data in textbox c# I just love the academic license program. A Solution Blueprint for DevOps. Open source workflow engine in C. Creating a custom WPF window. Article Alternatives Comments 11 Add your own alternative version Tagged as. Thanksss Usman Jun Zindabaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaad chakk te phateee i hv Validating data in textbox c# -Regards Usman Ghani www.

The Validating event gets fired...

Compatibility pemola 9-Feb I have seen this article just now and I want to use it in a project compiled with. Is there any problem? Thank you very much!

To exclude a textbox from...

What is the Licensing? What is your licensing for use of the. You can user Regular Expressions if Regex. I am just wondering why winproc was over written rather than some event from the textbox class?

MORE: Part time data entry work from home in bangalore dating

MORE: Pontella validating

YOU ARE HERE:
News feed