一些操作记录备查

行号显示------------------------------

Private Sub GridView1_CustomDrawRowIndicator(sender As Object, e As RowIndicatorCustomDrawEventArgs) Handles GridView1.CustomDrawRowIndicator
'行号
If e.Info.IsRowIndicator And e.RowHandle >= 0 Then
e.Info.DisplayText = e.RowHandle + 1
End If
End Sub

判断NULL------------------------------

判断在数据库中取出的字段是否是 NULL 用 ISDBNULL

如：If IsDBNull(objData) Then

判断一个对象是否存在，是否被初始化用 Nothing

如：If dsData Is Nothing Then

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自动调整所有字段宽度： gridView1.BestFitColumns()

调整某列字段宽度： gridView1.Columns[n].BestFit()