System windows forms control validating
So before saving data, I want to validate whether all the required fields are filled (Text Boxes) by the user. I would rather use a generic function that would be passed each control on the form and based on the type of the control, separate validation logic would be written.
in case extra validation like restricting validation to some of the controls only, that would be decided at the function calling level.
A smart tag is a panel that displays next to a control and contains a list of commonly used properties.
The Data Grid View control in Windows Forms has a smart tag (with the header “Data Grid View Tasks”) showing a list of commonly used properties (Figure 1). NET 2.0, developers can add the smart tag feature to their custom/user controls.
You can use the Days In Month() method from the Date class to find out the number of days in a particular month and year. My client specifically wanted an easy way to enter dates without using the mouse to select a date.
Is Valid Then Raise Event Validation Failed(Me, New Event Args()) End If End Sub End Class The class also exposes an event called Validation Failed that will be raised if content entered does not match with the pattern indicated by the regular expression. NET regular expression validator provides some built in regular expressions that validate things such as e-mail and zip code. \d-\d" Public Shared SSN As String = "\d-\d-\d" Public Shared ZIP As String = "\d(-\d)?
The topic of the next column is yet to be determined.
In addition, they wanted the ability to customize the format in which the date is displayed-either numerically or alphabetically-to represent the month.
On the surface this task looks easy to solve-simply add a couple of Text Box controls to the form and configure them to display day, month, and year accordingly.