用户控制验证组问题

时间:2011-06-22 16:48:42

标签: asp.net validation user-controls

我在页面上有两个用户控件实例。两者都有字段和一个提交按钮。

我已经在字段和验证器上设置了验证组,但出于某种原因验证了两个用户控件的验证器是否已激活。

2 个答案:

答案 0 :(得分:7)

此方法也有效:

Dim valGroup = String.format("{0}-validation", Guid.NewGuid())

rfv001.ValidationGroup = valGroup
rfv002.ValidationGroup = valGroup
rfv003.ValidationGroup = valGroup
rfv004.ValidationGroup = valGroup
rfv005.ValidationGroup = valGroup

btnSubmit.ValidationGroup = valGroup

您只需手动设置ValidationGroup的值。

答案 1 :(得分:3)

您可以在UserControl中公开要从Page设置的属性ValidationGroup。此值应存储在ViewState中,以便UserControl的每个实例都将获得不同的ValidationGroups(如果您的页面分配不同)。

例如:

Public Property ValidationGroup() As String
 Get
  Return CStr(ViewState("ValidationGroup"))
 End Get
 Set(ByVal value As String)
  SetValidationGroupOnChildren(Me, value)
  ViewState("ValidationGroup") = value
 End Set
End Property

Private Sub SetValidationGroupOnChildren(ByVal parent As Control, ByVal validationGroup As String)
    For Each ctrl As Control In parent.Controls
        If TypeOf ctrl Is BaseValidator Then
            CType(ctrl, BaseValidator).ValidationGroup = validationGroup
        ElseIf TypeOf ctrl Is IButtonControl Then
            CType(ctrl, IButtonControl).ValidationGroup = validationGroup
        ElseIf ctrl.HasControls() And ctrl.Visible = True Then
            SetValidationGroupOnChildren(ctrl, validationGroup)
        End If
    Next
End Sub

如果在UserControl中需要不同的ValidationGroup,则上述递归函数将不起作用,然后您可以从代码隐藏中手动分配它。例如,将UserControl的ID(可能已足够)或ClientID放在相应控件的ValidationGroup属性之前。您可以调用此函数的好地方是PreRender