Start C textbox validating errorprovider

C textbox validating errorprovider

I want to check what the user is writing in a textbox before I save it in a database. I guess I can always write some ifs or some try-catch blocks, but I was wondering if there's a better method.

I default everything to not Cause Validation, enables them all before I use the event for validating the whole form, and disables them all after again. 2) Write a validation routine, maybe directly under the button click, that loops through the control collection, checking the value/validity of the control's content.

Maybe defer to a private method per control if the validation is complex.

You can customize the Error Provider control to set the Blink Rate and Blink Style.

EDIT: presently as a work around, I have a method that toggles the "Causes Validation" property on and off. I think this is the best way to go with validation using Error Provider Component (Or) Try this I've used something along the following lines: 1) Define the controls you want validated in a collection of some sort.

We will implement the business rule to allow test appointments to be setup on weekdays only using validation on the form.

Add controls as shown in the figure below and set the properties of the controls as indicated in the table. The control is added to the form and displayed in the control tray in the Windows form in Design view. Now we will add the validations for the Date Time Picker controls which collects the Test Date information.

Built-in validation doesn't go much further than an enforcable maximum length for textboxes, but there are some nice methods you can use to make validation a breeze.