‹form id="Form1" runat="server"› 

‹div class="container-fluid"› 

    ‹div class="row"› 
        ‹div class="col-sm-2"› 
            ‹asp:TextBox ID="Value1" 
                class="btn btn-theme" 
                Columns="2" 
                MaxLength="3" 
                Text="837" 
                runat="server"/› 
            ‹/div› 

            ‹div class="col-sm-2"› 
                ‹input type="text" 
                    disabled="disabled" 
                    value="+" 
                    class="btn btn-theme" 
                    size="2" /› 
            ‹/div› 

            ‹div class="col-sm-2"› 
                ‹asp:TextBox ID="Value2" 
                    class="btn btn-theme" 
                    Columns="2" 
                    MaxLength="3" 
                    Text="186" 
                    runat="server"/› 
            ‹/div› 
        
            ‹div class="col-sm-2"› 
                ‹input type="text" 
                    disabled="disabled" 
                    value="=" 
                    class="btn btn-theme" 
                    size="2" /› 
            ‹/div› 

            ‹div class="col-sm-4"› 
                ‹asp:Label ID="AnswerMessage" 
                    runat="server" 
                    class="btn btn-theme" 
                    Text=" "/› 
            ‹/div› 
    ‹/div› 

    ‹div class="row"› 
        ‹div class="col-sm-8"› 
            ‹asp:Button ID="AddButton" 
                class="btn btn-theme" 
                Text="Calculer le résultat" 
                OnClick="AddButton_Click" 
                runat="server"/› 
        ‹/div› 
        ‹div class="col-sm-4"› ‹/div› 
    ‹/div› 

    ‹pre› 
        ‹asp:RequiredFieldValidator ID="Value1RequiredValidator" 
            ControlToValidate="Value1" 
            ErrorMessage="Entrer un nombre, SVP.‹br /› " 
            Display="Dynamic" 
            runat="server"/› 
    ‹/pre› 

    ‹pre› 
        ‹asp:RequiredFieldValidator ID="Value2RequiredValidator" 
            ControlToValidate="Value2" 
            ErrorMessage="Entrer un nombre, SVP.‹br /› " 
            Display="Dynamic" 
            runat="server"/› 
    ‹/pre› 

    ‹pre› 
        ‹asp:RangeValidator ID="Value1RangeValidator" 
            ControlToValidate="Value1" Type="Integer" 
            MinimumValue="1" 
            MaximumValue="999" 
            Display="Dynamic" 
            ErrorMessage="Veuillez entrer un entier compris entre 1 et 999." 
            runat="server"/› 
    ‹/pre› 
    
    ‹pre› 
        ‹asp:RangeValidator ID="Value2RangeValidator" 
            ControlToValidate="Value2" 
            Type="Integer" 
            MinimumValue="1" 
            MaximumValue="999" 
            Display="Dynamic" 
            ErrorMessage="Veuillez entrer un entier compris entre 1 et 999." 
            runat="server"/› 
    ‹/pre› 

‹/div› 

‹/form›