Change Image Inside UpdatePanel Dynamically

Hi Friends,

I'm generating an image (graph.jpg) runtime and saving it to the server and displaying it in a image control by setting its ImageUrl property. The Image control is inside an UpdatePanel.

The problem is that,

Image is displaying (with change) fine when EnableViewState=False, but not showing any changes when EnableViewState=True.

Please tell me the reason and provide a solution.

<asp:UpdatePanel ID="UpdatePanel3" runat="server" UpdateMode="Conditional" >
 <ContentTemplate>
 
..................
..................
 
<asp:LinkButton ID="linkGraph" CssClass="submit" Width="150" runat="server" Text="CREATE GRAPH" OnClick="DisplayGraph"></asp:LinkButton>
 
<asp:Image ID="imgGraph" runat="server" ImageUrl="~/Images/graph.jpg" />
 
 
</ContentTemplate>
<Triggers>
 <asp:AsyncPostBackTrigger ControlID="linkGraph" EventName="Click" />
</Triggers>
</asp:UpdatePanel>
 
 
 
protected void DisplayGraph(object sender, EventArgs e)
{
.................
.................
Graph.GraphToFile(Server.MapPath(hostName + "Images/" + "graph.jpg"));
 
}

Select allOpen in new window