Cannot convert from Object to Int

debugcn Published at Dev

Zooch84

Have the following code, designed to change the text value of the field based on the Int present (i.e. if the Int is 1 then display "Big Cheese" instead.

Gives the following Errors:

Error 4 The best overloaded method match for 'MultiviewTester.order_details.FieldDisplay(int)' has some invalid arguments Argument 1: cannot convert from 'object' to 'int'

.aspx Page Code:

<ItemTemplate>
    <asp:Label runat="server" Text='<%#FieldDisplay(Eval("pizza_id")) %>'>
    </asp:Label>
</ItemTemplate>

Code Behind

protected string FieldDisplay(int pizza_id)
    {
        string rtn = "DefaultValue";

            if (pizza_id == 1)
            {
                rtn = "Big Cheese";
            }
            else if (pizza_id == 2)
            {
             rtn = "BBQ Beef";
            }
            else if (pizza_id == 3)
            {
                rtn = "Chicken and Pineapple";
            }
            else if (pizza_id == 4)
            {
                rtn = "Pepperoni Feast";
            }
            else if (pizza_id == 5)
            {
                rtn = "Vegetarian";
            }
        return rtn;
        }

Keep getting error Object cannot be converted to Int . I'm not sure where it is getting this from as the "pizza_id" field in the DB is set to INT....do I need to do some kind of parse somewhere?

Pawan

You need to change your method a little bit as below:

protected string FieldDisplay(object pizza_id)
{
   string rtn = "DefaultValue";
   int pizzaID=0;
   if(int.TryParse(Convert.ToString(pizza_id), out pizzaID))
    {
        if (pizzaID== 1)
        {
            rtn = "Big Cheese";
        }
        else if (pizzaID== 2)
        {
         rtn = "BBQ Beef";
        }
        else if (pizzaID== 3)
        {
            rtn = "Chicken and Pineapple";
        }
        else if (pizzaID== 4)
        {
            rtn = "Pepperoni Feast";
        }
        else if (pizzaID== 5)
        {
            rtn = "Vegetarian";
        }
     }
   return rtn;
}

I recommend you to use switch instead if else ladder.

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