How to Add a Theme to Your WPF Project

	    
<Application x:Class="WPF_Theme.App"
      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
      xmlns:local="clr-namespace:WPF_Theme"
      StartupUri="MainWindow.xaml">


  <Application.Resources>
    <Style TargetType="DataGridColumnHeader">
      <Setter Property="HorizontalContentAlignment" Value="Center" />
      <Setter Property="VerticalContentAlignment" Value="Center" />
      <Setter Property="FontWeight" Value="Bold" />
      <Setter Property="Padding" Value="10,5" />
    </Style>
    <Style TargetType="Button">
      <Setter Property="Background" Value="#FF0078D7" />
      <Setter Property="Foreground" Value="White" />
      <Setter Property="FontSize" Value="14" />
      <Setter Property="Padding" Value="10,5" />
      <Setter Property="BorderThickness" Value="0" />
      <Setter Property="BorderBrush" Value="Transparent" />
      <Setter Property="HorizontalContentAlignment" Value="Center" />
      <Setter Property="VerticalContentAlignment" Value="Center" />
      <Setter Property="Cursor" Value="Hand" />
      <Setter Property="Template">
        <Setter.Value>
          <ControlTemplate TargetType="Button">
            <Border Background="{TemplateBinding Background}"
                CornerRadius="5"
                Padding="{TemplateBinding Padding}">
              <ContentPresenter HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
                       VerticalAlignment="{TemplateBinding VerticalContentAlignment}" />
            </Border>
          </ControlTemplate>
        </Setter.Value>
      </Setter>
      <Setter Property="Effect">
        <Setter.Value>
          <DropShadowEffect BlurRadius="5" ShadowDepth="2" Color="#40000000" />
        </Setter.Value>
      </Setter>
      <Style.Triggers>
        <Trigger Property="IsMouseOver" Value="True">
          <Setter Property="Background" Value="#FF005A9E" />
        </Trigger>
        <Trigger Property="IsEnabled" Value="False">
          <Setter Property="Background" Value="#FFCCCCCC" />
          <Setter Property="Foreground" Value="#FF666666" />
        </Trigger>
      </Style.Triggers>
    </Style>


    <Style TargetType="ProgressBar">
      <Setter Property="Foreground" Value="#FF0078D7" />
      <Setter Property="Background" Value="#FFCCCCCC" />
      <Setter Property="BorderThickness" Value="0" />
      <Setter Property="Height" Value="25" />
      <Setter Property="Template">
        <Setter.Value>
          <ControlTemplate TargetType="ProgressBar">
            <Border Background="{TemplateBinding Background}"
                CornerRadius="5">
              <Grid x:Name="PART_Track">
                <Rectangle x:Name="PART_Indicator"
                     Fill="{TemplateBinding Foreground}"
                     HorizontalAlignment="Left"
                    RadiusX="5" RadiusY="5" />
              </Grid>
            </Border>
          </ControlTemplate>
        </Setter.Value>
      </Setter>
    </Style>
  </Application.Resources>
</Application>








<Window x:Class="WPF_Theme.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:WPF_Theme"
    mc:Ignorable="d"
    Title="MainWindow" Height="450" Width="800">
  <Grid>
    <Grid.RowDefinitions>
      <RowDefinition Height="30"/>
      <RowDefinition Height="Auto" />
      <RowDefinition Height="*" />
    </Grid.RowDefinitions>
    <!-- Top Panel with Buttons and Progress Bar -->
    <StackPanel Grid.Row="1" Margin="20">
      <StackPanel Orientation="Horizontal" HorizontalAlignment="Center" Margin="0,10">
        <Button x:Name="select" Content="Select" Width="140" Margin="10,0" />
        <Button x:Name="browseFolder" Content="Select Folder" Width="140" Margin="10,0" IsEnabled="False" />
        <Button x:Name="Convert" Content="Convert Files" Width="140" Margin="10,0" IsEnabled="False" />
      </StackPanel>


      <!-- Progress Bar with Percentage -->
      <Grid Margin="0,20">
        <ProgressBar x:Name="progress" Value="{Binding ProgressValue}" />
        <TextBlock Text="{Binding ProgressValue, StringFormat={}{0:F2}%}"
             HorizontalAlignment="Center"
             VerticalAlignment="Center"
             Foreground="Black"
             FontSize="14"
             FontWeight="Bold" />
      </Grid>
    </StackPanel>


    <!-- Report Section -->
    <GroupBox Grid.Row="2" Header="Report" Margin="20,10" >
      <DataGrid x:Name="dg" AutoGenerateColumns="False" ItemsSource="{Binding}" CanUserAddRows="False">
        <DataGrid.Columns>
          <!-- File Name Column -->
          <DataGridTextColumn Header="File Name" Width="*" MinWidth="230" Binding="{Binding FileName}" />
          <DataGridTextColumn Header="Number of Point" Width="*" MinWidth="150" Binding="{Binding NumPoint}" />
          <DataGridTextColumn Header="MinMax/XY" Width="*" MinWidth="250" Binding="{Binding Domain}" />


         
        </DataGrid.Columns>
      </DataGrid>
    </GroupBox>
  </Grid>


</Window>