When implemented by a class, processes postback data for an ASP.NET server control.
(in System.Web.dll)
Visual Basic (Declaration)
Function LoadPostData ( _
postDataKey As String, _
postCollection As NameValueCollection _
) As Boolean
Dim instance As IPostBackDataHandler
Dim postDataKey As String
Dim postCollection As NameValueCollection
Dim returnValue As Boolean
returnValue = instance.LoadPostData(postDataKey, _
postCollection)
bool LoadPostData(
string postDataKey,
NameValueCollection postCollection
)
bool LoadPostData(
String^ postDataKey,
NameValueCollection^ postCollection
)
function LoadPostData(
postDataKey : String,
postCollection : NameValueCollection
) : boolean
Return Value
Type:
System..::.Boolean
true if the server control's state changes as a result of the postback; otherwise, false.
The ASP.NET page framework tracks all the server controls that return true to this method call, and then invokes the RaisePostDataChangedEvent method on those controls.
The following code example demonstrates a server control that implements a version of the LoadPostData method.
Public Overridable Function LoadPostData(postDataKey As String, _
postCollection As NameValueCollection) As Boolean
Dim presentValue As String = Text
Dim postedValue As String = postCollection(postDataKey)
If (presentValue Is Nothing) OrElse (Not presentValue.Equals(postedValue)) Then
Text = postedValue
Return True
End If
Return False
End Function
public virtual bool LoadPostData(string postDataKey,
NameValueCollection postCollection) {
String presentValue = Text;
String postedValue = postCollection[postDataKey];
if (presentValue == null || !presentValue.Equals(postedValue)){
Text = postedValue;
return true;
}
return false;
}
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
.NET Framework
Supported in: 3.5, 3.0, 2.0, 1.1, 1.0
Reference
Other Resources