.ToBitmap: Missing 'Using Directive' or 'Assembly Reference'

Question

I have a Windows console application in C# that acts as a phone book. I'm getting a Missing Directives error in the lines where the application is setting up the menu icons, such as this one:

cmsProgramMenu.Items.Add("&Settings", Properties.Resources.phone_receiver.ToBitmap(), OnSettings_Click);

The full error is

'object' does not contain a definition for 'ToBitmap' and no extension method 'ToBitmap' accepting a first argument of type 'object' could be found (are you missing a using directive or assembly reference?)

.

I've poked around online and on SO and all the directives that I've seen suggested are already included in my code, but the error persists. These are the ones that I have:

using System;

using System.Collections.Generic;

using System.Drawing;

using System.Linq;

using System.Net;

using System.Net.Sockets;

using System.Text;

using System.Threading.Tasks;

using System.Windows.Forms;

using System.Configuration;

using System.Data;

using System.Windows.Media.Imaging;

Is there another one that I'm missing? Or is there another way of converting the images to Bitmap? I'm working in Visual Studio 2015.

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Answer 1

The problem is that Properties.Resources.phone_receiver is of type Object and as the error message says Object doesn't have a method called ToBitmap. If you are sure that is is an Icon (which your code suggests it is) then you can do the following:

((Icon)Properties.Resources.phone_receiver).ToBitmap()

This explicitly casts Properties.Resources.phone_receiver to an Icon and then the compiler knows that it can call the ToBitmap method on it.

.ToBitmap: Missing 'Using Directive' or 'Assembly Reference'

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