Question

I have a problem with an aspx page.Interesting thing about it , it worked before but now it didn’t.
I want to call a server side method from an aspx page : Here is my aspx code:

<asp:TextBox ID="lblo" runat="server" Text='<%#GetPanelImageURL()%>' ></asp:TextBox>

And my server side code :

public string GetPanelImageURL()
{
    return "asdasd";
}

This is not working.Can anybody help?

Answer 1

<%# .. %> are used for data-binding expressions. Data-binding expressions are resolved when the DataBind method of a control or of the Page class is called. For controls such as the GridView, DetailsView, and FormView controls, data-binding expressions are resolved automatically during the control’s PreRender event and you are not required to call the DataBind method explicitly (from here).

So you don’t call a DataBind method for this control, and this expression is not evaluated.