Question

i’ve the following code in aspx page

<asp:Label ID="CittaLabel" runat="server" Text='<%# Eval("Citta") %>' Font-Size='<%# ReturnFontSize(Eval("Big")) %>'/>

and this is my code behind service function

Protected Function ReturnFontSize(ByVal Big As Boolean) As FontUnit
    If Big Then
        ReturnFontSize = FontSize.Medium
    Else
        ReturnFontSize = FontSize.Small
    End If
End Function

But i get always a font very very small.
So my question is : for changing “Font-Size” proprety of a control, from code behind, which return type i have to use, assuming that FontUnit not work ?

Thank you

Answer 1

You have to DataBind the Containercontrol of the label(f.e. a GridView or the complete page). Then you can call a Codebehind Function from the aspx-page.

Hence f.e. in Page-Load:

Me.DataBind()

and the function must return an object from type FontSize:

 Protected Function ReturnFontSize(ByVal fontSize As Object) As FontSize
    Select Case fontSize.ToString.ToUpper
        Case "BIG"
            Return WebControls.FontSize.Large
        Case Else
            Return WebControls.FontSize.Medium
    End Select
End Function

and on aspx-page:

Font-Size='<%# ReturnFontSize(Eval("Big")) %>'

But why dont you set the Fontsize in Codebehind on Page.Load?

Me.CittaLabel.FontSize= ....