DataGridTextBoxColumn.EnterNullValue Método
Definição
protected public:
override void EnterNullValue();
protected internal override void EnterNullValue ();
override this.EnterNullValue : unit -> unit
Protected Friend Overrides Sub EnterNullValue ()
Exemplos
O exemplo a seguir testa um DataGridColumnStyle para determinar seu tipo de coluna.The following example tests a DataGridColumnStyle to determine its column type. Se a coluna for a DataGridTextBoxColumn e o DataColumn permitir null valores, a NullText propriedade será definida e o EnterNullValue método invocado.If the column is a DataGridTextBoxColumn, and the DataColumn allows null values, then the NullText property is set and the EnterNullValue method invoked.
Public Class Form1: Inherits Form
Protected dataGrid1 As DataGrid
Private Sub SetNullText()
Dim dgeCol As MyGridColumn
' Assumes a column named Status exists.
dgeCol = CType(DataGrid1.TableStyles("Customers"). _
GridColumnStyles("Status"), MyGridColumn)
dgeCol.EnterNull
End Sub
End Class
Public Class MyGridColumn
Inherits DataGridTextBoxColumn
Public Sub EnterNull()
me.EnterNullValue
End Sub
End Class
Comentários
Insere o NullText valor na célula.Enters the NullText value into the cell.