C ＃ practical skills: package the icon into DLL and read it

summary

Individual project interfaces sometimes need to use a lot of icons , These pictures can be set up in a folder and stored separately , But sometimes it involves the deployment of multiple devices , Each device needs to be copied along with the project , If you forget the interface display, there will be problems , Is there a better way to solve ？

Yes , Of course. , This section introduces a method to solve this problem , Embed pictures into resources DLL Pack together .

Methods to introduce

step1： Click item -》 Right click -》 attribute -》 resources -》 Add resources

step2： Front desk binding

                <WrapPanel >
                    <Image Source="{Binding AddPNG}" Width="15" Height="15" />
                    <TextBlock Text=" add to " VerticalAlignment="Center" />
                </WrapPanel>

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step3： Background definition and call

public System.Windows.Media.ImageSource AddPNG { get; set; }

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What is defined here is ImageSource Data of type , The picture needs to be converted ： The following methods need to be put into the constructor

AddPNG = ChangeBitmapToImageSource(Caburn.Micro.Hello.Properties.Resources.add);

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  [DllImport("gdi32.dll", SetLastError = true)]
        private static extern bool DeleteObject(IntPtr hObject);

        /// <summary>
        ///  from bitmap convert to ImageSource
        /// </summary>
        /// <param name="icon"></param>
        /// <returns></returns>
        public static System.Windows.Media.ImageSource ChangeBitmapToImageSource(Bitmap bitmap)
        {
            //Bitmap bitmap = icon.ToBitmap();
            IntPtr hBitmap = bitmap.GetHbitmap();
            System.Windows.Media.ImageSource wpfBitmap = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap(
                hBitmap,
                IntPtr.Zero,
                Int32Rect.Empty,
                System.Windows.Media.Imaging.BitmapSizeOptions.FromEmptyOptions());
            if (!DeleteObject(hBitmap))
            {
                throw new System.ComponentModel.Win32Exception();
            }
            return wpfBitmap;
        }

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then , You run and generate your DLL, No matter where it is used , There is no need to make another copy of this picture . Show results ：

In fact, a simpler way is to directly modify the production operation of the picture to Resource, Then in the place of reference ：

  <Image Source="/Images/userlogin.png"/>

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If a global style is applied , Need to add Style=“{x:Null}”