Hi,
Viewstate of WebUserControl does NOT work although the
'EnableViewstate'-property of the usercontrol is set to true
Description :
Using ASP.Net :
I have a created a WebPage with 2 buttons and 1 Web-UserControl of type
LottoWebUserControl. The control has 1 label-control embedded
The purpose is to toggle the visible-property of the embedded-label-ctrl
using the 2 buttons:
Some sample code :
public class LottoWebUserControl : System.Web.UI.UserControl
{
private void Page_Load(object sender, System.EventArgs e)
{
if ( ! IsPostBack )
MyVisible = false;
else
MyVisbile = (bool)ViewState["visible"];
}
public bool MyVisible
{
get { return (bool)ViewState["visible"]; }
set
{
ViewState["visible"] = value;
SetState();
}
}
private void SetState()
{
lbl1.Visible = (bool)ViewState["visible"];
}
}
// The Web-Page containing the 2 buttons and an instance of the usercontrol
// 'EnableViewstate'-property of the usercontrol is set to true
public class WebForm1 : System.Web.UI.Page
{
protected LottoWebUserControl m_LottoWebUserControl = new
LottoWebUserControl();
private void button1_Click(object sender, System.EventArgs e)
{
m_LottoWebUserControl.MyVisible = true;
}
private void button2_Click(object sender, System.EventArgs e)
{
m_LottoWebUserControl.MyVisible = false;
}
}
The toggling does NOT work. The label-ctrl remains in one state.
Maybe a clue : ViewState["visible"] has a correct value when used in the
Page_Load() handler but when accessed in the set-part of MyVisible-property
has it a value of null (before ViewState["visible"] = value; is executed)
any ideas ?
thanks
Chris
