![]() 'ErrorMessage is also used for displaying summary message. 'This field name will be displayed in summary message. 'For example, for txtStudentName you can set 'Student Full Name' as field name. 'DisplayName property is used for displaying summary message to user. 'ControlObj is a control from windows form which is to be validated. 'Validate property decides weather control is to be validated. 'It holds any control in ControlObj property. 'ValidationControl class is used to hold any control from windows form. 'This class is used by ErrorProviderExtended class.ĭefault Public Property Item(ByVal ListIndex As Integer) As ValidationControlĭefault Public Property Item(ByVal pControl As Object) As ValidationControl 'This class is collection of ValidationControl class objects. It is used for holding all Validation Controls. 'Following class is inherited from CollectionBase class. MyBase.SetError(sender, Controls(sender).ErrorMessage) Private Sub Validation_Event(ByVal sender As Object, ByVal e As ) 'Handles txtCompanyName.Validating 'Following event is hooked for all controls, it sets an error message with the use of ErrorProvider. 'This function hooks validation event with all controls.ĪddHandler CType(Controls(i).ControlObj, ).Validating, AddressOf Validation_Event 'Following function clears error messages from all controls. SetError(Controls(i).ControlObj, Controls(i).ErrorMessage) If Controls.Count " & Controls(i).DisplayName & vbNewLine Public Function CheckAndShowSummaryErrorMessage() As Boolean 'If not all fields are entered, this function displays a message box which contains all those field names 'Following function returns true if all fields on form are entered. Set(ByVal Value As ValidationControlCollection) Public Property Controls() As ValidationControlCollection 'Controls holds all those objects which should be validated. 'Controls property is of type ValidationControlCollection which is inherited from CollectionBase Public Property SummaryMessage() As String 'Default value is "Please enter following mandatory fields,". 'This property will be used for displaying a summary message about all empty fields Private _summarymessage As String = "Please enter following mandatory fields," Private _validationcontrols As New ValidationControlCollection 'Following class is inherited from basic ErrorProvider class bueno, muy pobre, pero es facil de usar y sencillo de entender a pesar de ello: I cannot recall exactly, but you may find that you may need to open the Form's designer in order to get it to reserialize the value passed into SetIconAlignment in the files.Me encontré por ahí un ErrorProvider extendido, ya no recuerdo donde lo encontré, y la documentación es. Then you could easily do a search/replace for new ErrorProvider() and replace with new MyErrorProvider(). ![]() Public new void SetIconAlignment(Control control, ErrorIconAlignment value)īase.SetIconAlignment(control, ErrorIconAlignment.MiddleLeft) Public new ErrorIconAlignment GetIconAlignment(Control control) method virtual we wouldn't have to waste our time. If the base class made the GetIconAlignment to our SetIconAlignment method so that we can then change what we actually want so that the designer generates calls We need to have a default that is explicitly different to Public class MyErrorProvider : ErrorProvider We used an inherited ErrorProvider component instead which forcefully set/returned the default for the IconAlignment extended property.Į.g.
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