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UserControl.SaveViewState Method
Visual Studio 2010
Saves any user control view-state changes that have occurred since the last page postback.
Assembly: System.Web (in System.Web.dll)
Return Value
Type: System.ObjectReturns the user control's current view state. If there is no view state associated with the control, it returns Nothing.
The following example demonstrates a user control that manages its view state using the LoadViewState and SaveViewState methods.
Public Property UserText() As String
Get
Return CStr(ViewState("usertext"))
End Get
Set(ByVal value As String)
ViewState("usertext") = value
End Set
End Property
Public Property PasswordText() As String
Get
Return CStr(ViewState("passwordtext"))
End Get
Set(ByVal value As String)
ViewState("passwordtext") = value
End Set
End Property
<System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.Demand, Name:="FullTrust")> _
Protected Overrides Sub LoadViewState(ByVal savedState As Object)
Dim totalState As Object() = Nothing
If Not (savedState Is Nothing) Then
totalState = CType(savedState, Object())
If totalState.Length <> 3 Then
' Throw an appropriate exception.
End If
' Load base state.
MyBase.LoadViewState(totalState(0))
' Load extra information specific to this control.
If Not (totalState Is Nothing) AndAlso Not (totalState(1) Is Nothing) AndAlso Not (totalState(2) Is Nothing) Then
UserText = CStr(totalState(1))
PasswordText = CStr(totalState(2))
End If
End If
End Sub
<System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.Demand, Name:="FullTrust")> _
Protected Overrides Function SaveViewState() As Object
Dim baseState As Object = MyBase.SaveViewState()
Dim totalState(2) As Object
totalState(0) = baseState
totalState(1) = user.Text
totalState(2) = password.Text
Return totalState
End Function
End Class
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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