The dark theme app

i started making this maybe a few weeks ago. just drag and drop the DarkTheme.xaml (located in the ThemesFolder folder) into your project (anywhere) and inside App.xaml place this:

<Application.Resources>
    <ResourceDictionary>
        <ResourceDictionary.MergedDictionaries>
            <ResourceDictionary Source="/ThemesFolder/DarkTheme.xaml"/>
        </ResourceDictionary.MergedDictionaries>
    </ResourceDictionary>
</Application.Resources>

Also, i added some stuff used for MVVM for some reason. I only really used it for the light/dark combobox at the bottom left of the screen. and thats about it. Enjoy :) Here's a preview of the latest update: (i haven't sorted the actual window title bar's theme. that's complex stuff)

Errors and 'todo' stuff

An error if you add a "Light/Dark" option thingy, and use Menus/MenuItems; in the test program thing, selecting the light theme just unloads DarkTheme.xaml, which makes WPF style everything to their default styles. But because i said that MenuItems need to have a special template, well WPF will try to look for that template and wont find it. As a result, the MenuItems will all turn into tiny squares because WPF has nothing to style them with. idk how to fix that unfortunately. rip.

How to use MenuItems properly (sort of)

MenuItems are relatively challenging to auto-style, so they require just a tiny bit of effort to give them the dark theme. MenuItems use a POPUP thingy which is quite difficult to get to work sometimes. But i think i did okay tbh. but i haven't managed to put the little arrow which shows when the MenuItem has children MenuItems. this is the code for making a fully themed menu:

<Menu VerticalAlignment="Top">
    <MenuItem Header="File">
        <MenuItem Header="Save"                Template="{DynamicResource DropDownMenuItemTemplate}"/>
        <MenuItem Header="Save as..."          Template="{DynamicResource DropDownMenuItemTemplate}">
            <MenuItem Header="Text File (txt)" Template="{DynamicResource DropDownMenuItemTemplate}"/>
            <MenuItem Header="XML (xml)"       Template="{DynamicResource DropDownMenuItemTemplate}"/>
            <MenuItem Header="C# File (cs)"    Template="{DynamicResource DropDownMenuItemTemplate}"/>
        </MenuItem>
    </MenuItem>
</Menu>

How to use the TabControls properly (with add/close buttons)

I added 2 different templates for tabcontrols and tabitem; normal ones and ones with add/close buttons. to use them, you first need to set the DataContext of the tabcontrol, or set the datacontext of the window the tabcontrol is on, like the mainwindow. this datacontext would be set to a class (MainViewModel maybe) which contains 2 ICommands:

public ICommand NewTabCommand { get; set; }
public ICommand CloseTabCommand { get; set; }

You can change these in the DarkTheme.xaml file. These commands automatically bind when the datacontext is set. How you setup clicking Add or Close to do something is up to you. For giving tabcontrols/tabitems the add/close buttons, use these templates:

Template="{DynamicResource CloseButtons}" 
Template="{DynamicResource AddButtons}"

use the CloseButtons on TabItems, and the AddButtons template on the TabControl Use this code for a normal tabcontrol with tabitems:

<TabControl>
    <TabItem Header="A TabItem Here">
        <Grid/>
    </TabItem>
</TabControl>

and for using add/close buttons, use this:

<TabControl Template="{DynamicResource AddButtons}">
    <TabItem Header="A TabItem Here" Template="{DynamicResource CloseButtons}">
        <Grid/>
    </TabItem>
</TabControl>

Other things

Also, if you absolutely need my consent to do stuff like edit/use this theme stuff, then you can edit this and publish this all you want :) would be nice if you credited me at this github link, but eh.