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WPF can't display image properly

Yesterday I create a project in my disk D partition and I found the images I put into project can't be displayed well. XAML code below is very simple:
<Window x:Class="WpfImageTest.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:WpfImageTest"
mc:Ignorable="d"
Title="MainWindow" Height="450" Width="800">
<Grid>
<Image Width="300" Height="300" Source="/Resources/Images/Chen.png"/>
</Grid>
</Window>
You can see I write a relative path for Image control's Source property and when I run the application it shows nothing on the interface.But magically I copy all the files into the root of my C partition or D partition of my physical disk and rebuild the project, the application runs properly. This proplem troubles me almost all day , can anyone explain why this thing happens?
The original location of my project is D:\Programming\C#\Practice\WpfImageTest and I have already set all images build property to Copy all the time and Content.

Select your image file in your Solution Browser and set its Build Action to Resource as on image below.

How do you make a video play automatically on a wpf program startup using a MediaElement

I'm sorry if this comes off as a rookie question, but I have spent more time on this than I care to admit.
I'm trying to have a video autoplay on the program's startup. The main window preview shows that the video has been found; however, when I start the program I get a white screen. If someone could help me that would be much appreciated. Thank you and have a wonderful day!
Below is the entirety of the program's xaml code. I have tried running it in other builds of visual studios with no success - so I don't think it's vs.
<Window x:Class="SUP.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:SUP"
mc:Ignorable="d"
Title="MainWindow" Height="350" Width="525">
<Grid>
<MediaElement Name="VidPlayer" HorizontalAlignment="Left" Height="321" VerticalAlignment="Top" Width="518" Source="Videos\Vid.mp4" LoadedBehavior="Play"></MediaElement>
</Grid>
</Window>

Make sure your video file has Copy To Ouput Directory set to Copy always or Copy if newer.

WPF Window not having title named correctly

I have a WPF application that has the title set to "Pioneer Document Handling Viewer" within the xaml:
<Window
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mt="clr-namespace:DocumentHandlingTouch" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d" x:Class="DocumentHandlingTouch.MainWindow"
Title="Pioneer Document Handling Viewer" Height="909" Width="1020" WindowState="Maximized"
Icon="default_document.ico" xmlns:xctk="http://schemas.xceed.com/wpf/xaml/toolkit">
But it shows up with an older title: when I run it.
I've tried a clean rebuild. Reopening the project, etc and the title still doesn't change.
Why would the XAML be different than the runtime title?

WPF - Trying to Add an Icon to my Window but getting a strange error

XamlParseException occured
Provide value on 'System.Windows.BAML.2006.TypeConverterMarkupExtension' threw an exception
I looked up examples of how to add an icon and it seems simple enough. How can I fix this?
<Window
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d" x:Class="DTV_Red_Zone_Channel.MainWindow"
Title="DirecTV Red Zone Channel" WindowStartupLocation="CenterScreen" WindowStyle="None" ResizeMode="NoResize"
Initialized="WindowInitialized" SizeToContent="WidthAndHeight"
Icon="RCS_Generic.ico"> <---- Where it's Erroring

ah... it says it cannot locate resource 'rcs_generic.ico' but i put it in the main directory AND where the executable folder is... so where would i put it then?
You need to include the RSC_Generic.ico in your project (at the root, given your XAML), and make sure that it's properties are set to use a Build Action of Resource.

Cannot find and add SurfaceUserControl

I can create UserControl and add TextBox very easily in Surface environment. Here is a sample code:
<UserControl x:Class="ScatterViewSizingSample.FixedSizeChild"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:local="clr-namespace:ScatterViewSizingSample"
mc:Ignorable="d" local:PopupWindow.InitialSizeRequest="300,250"
d:DesignHeight="300" d:DesignWidth="250">
<Grid Background="MediumSeaGreen">
<TextBox HorizontalAlignment="Left" Name="textBox1" VerticalAlignment="Top"/>
</Grid>
</UserControl>
I tried to add SurfaceUserControl and SurfaceTextBox, but I cannot find to add SurfaceUserControl from the menu. I changed UserControl to s:SurfaceUserControl and Texbox to s:SurfaceTextbox as follows:
<s:SurfaceUserControl x:Class="ScatterViewSizingSample.FixedSizeChild"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:s="http://schemas.microsoft.com/surface/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:local="clr-namespace:ScatterViewSizingSample"
mc:Ignorable="d" local:PopupWindow.InitialSizeRequest="300,250"
d:DesignHeight="300" d:DesignWidth="250">
<Grid Background="MediumSeaGreen">
<s:SurfaceTextBox HorizontalAlignment="Left" Name="textBox1"/>
</Grid>
</s:SurfaceUserControl>
But the system shows error that 'the type s:SurfaceWindows does not found'. I added Microsoft.Surface.Presentation and Microsoft.Surface.Presentation.Generic assembly reference. But it still shows error.
How can I fix it? Why the system does not show SurfaceUserControl as UserControl?

An application using Surface controls needs to use SurfaceWindow as it's root visual in order to do all of the custom touch handling. I suspect that since you're trying to convert this you are probably still using a standard Window which is giving you this error.

If you're developing for 2.0, SurfaceUserControl no longer exists, as per MSDN:
The SurfaceUserControl class has been removed in Surface 2.0. The SurfaceUserControl class was needed in Surface 1.0 SP1 to add touch support to user controls. However, touch support has been added to the UserControl class in .NET Framework 4. To convert your code, remove "s:Surface" from the front of "s:SurfaceUserControl", or use the Surface Migration PowerToy.
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