skip to content »

varivan.ru

Vb net datagrid cellvalidating

vb net datagrid cellvalidating-80

The following procedures describe how to apply validation rules to Data Grid bindings and customize the visual feedback.

Add(ts) End Sub Be aware this tip is for the Windows Forms Data Grid, not for the Data Grid View To validate the text entered into a datagrid add a handler to the Datagrid Textbox Column's validating event. Dim ds As New Data Set Private Sub Form1_Load(By Val sender As System. Fill(ds, "Products") Dim ts As New Data Grid Table Style ts. Load Data Row(New Object() , True) 'above only to build a sample datatable dt. Mapping Name = "Names" Dim text Col As New Data Grid Text Box Column text Col. Add(New Course With ) End Sub End Class Public Class Course Implements IEditable Object, INotify Property Changed Private _name As String Public Property Name As String Get Return _name End Get Set(By Val value As String) If _name = value Then Return _name = value On Property Changed("Name") End Set End Property Private _number As Integer Public Property Id As Integer Get Return _number End Get Set(By Val value As Integer) If _number = value Then Return _number = value On Property Changed("Id") End Set End Property Private _start Date As Date Time Public Property Start Date As Date Time Get Return _start Date End Get Set(By Val value As Date Time) If _start Date = value Then Return _start Date = value On Property Changed("Start Date") End Set End Property Private _end Date As Date Time Public Property End Date As Date Time Get Return _end Date End Get Set(By Val value As Date Time) If _end Date = value Then Return _end Date = value On Property Changed("End Date") End Set End Property #Region "IEditable Object" Private backup Copy As Course Private in Edit As Boolean Public Sub Begin Edit() Implements IEditable Object. Property Changed Private Sub On Property Changed(By Val property Name As String) Raise Event Property Changed(Me, _ New Property Changed Event Args(property Name)) End Sub #End Region End Class Public Class Course Validation Rule Inherits Validation Rule Public Overrides Function Validate(By Val value As Object, _ By Val culture Info As System. Culture Info) _ As Validation Result Dim course As Course = _ CType(CType(value, Binding Group). Load Dim conn As Sql Connection Dim str Conn As String Dim str SQL As String Dim da As Sql Data Adapter str Conn = "Server = (local);" str Conn &= "Database = North Wind;" str Conn &= "Integrated Security = SSPI;" conn = New Sql Connection(str Conn) da = New Sql Data Adapter("Select * From Products", conn) da. Table Name Dim col Discontinued As New Data Grid Bool Column With col Discontinued .

Width = 80 End With Dim col Name As New Data Grid Text Box Column With col Name .

Leave If is Editing Then Set Column Value At Row(cm Source, m Row Num, Column Combo Box. Private Sub Form1_Load(By Val sender As Object, By Val e _ As System.

Column Started Editing(Direct Cast(sender, Control)) End Sub Private Sub Leave Combo Box(By Val sender As Object, By Val e As Event Args) _ Handles Column Combo Box. Wnd Proc(m) End If End Sub /// This is a sample how to use it \\\Sample to use the simple datagrid combobox it needs a form with a datagrid.

New() Column Combo Box = New No Key Up Combo Add Handler Column Combo Box.

Add(ts) End Sub End Class Public Class Data Grid Combo Box Column Inherits Data Grid Text Box Column Public With Events Column Combo Box As No Key Up Combo 'special class Private With Events cm Source As Currency Manager Private m Row Num As Integer Private is Editing As Boolean Dim str Values() As String = Shared Sub New() End Sub Public Sub New() My Base.

The Data Grid control enables you to perform validation at both the cell and row level. Initializing New Item Event Args) _ Handles data Grid1.