New datagridviewcellvalidatingeventargs

Para atribuir a clula atual via cdigo podemos atribuir um valor a propriedade Current Cell do Data Grid View .No cdigo abaixo estou atribuindo a clula atual como sendo a primeira linha e a segunda coluna ( row=0 e column=1)A seguir temos um exemplo que quando ocorrer um valor para o campo Customer ID duplicado em uma nova linha ou linha sendo editada o evento Data Error ir ocorrer e ser tratado pela exibio de uma mensagem que descreve o erro.Visible controls and Form have a property to determine which control last displayed the shortcut menu in order to perform tasks specific to the control or to modify the shortcut menu displayed for the control.You might want to know when the shortcut menu is being displayed in order to set check marks, disable items, and perform other menu tasks before the menu is displayed to the user.Single; Change the Order of the Columns in the Windows Forms Data Grid View Control Samples:customers Data Grid View.For example, you might want to provide alternate sorting when running on operating systems that do not support sorting by group.

Para exibir imagens em um controle Data Grid View no h muito segredo pois ele trata nativamente qualquer imagem suportada pela classe Image bem como o ormato de imagem OLE usado por alguns banco de dados.A tabela Customers no possui um campo muito adequado para um exemplo mais convincente ,vou usar portanto o campo City de e escolher algumas cidades de forma que exibam o nome do pais a qual pertenam.O cdigo o seguinte: Voc pode exibir uma combobox em uma clula de forma a permitir que o usurio selecione valores determinados de uma lista existente.O motivo deste comportamento que o Data Grid View procura pela primeira propriedade pblica do objeto ao qual esta vinculado e a primeira propriedade pblica de um array de strings o tamanho de cada elemento contido no array.========================================== 'outras maneiras de declarar e iniciar um array '(a) 'Dim vetor(2) As String 'vetor(0) = "Super CD VB 40,00" 'vetor(1) = "Super DVD.NET 50,00" '(b) 'Dim vetor() As String 'vetor = New String() '============================================= Habilite o Data Base Explorer no menu View e localize o banco de dados , expanda o objeto Tables e em seguida arraste e solte a tabela Customers no descrito Data Set1conforme a figura abaixo: Para este exemplo voc deve criar um Table Adapter para a tabela Customers.

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