با سلام خدمت اساتید محترم
غرض از مزاحمت این بود که من یه Style برای فرم تعریف کردم
اما با دوتا مشکل برخوردم
که اولیش اینه که فرم Resize نمیشه و دومی هم اینکه فرم Drag&Drop
نمیشه
اینم از کدی که من نوشتم
<Style TargetType="Window" x:Key="Win1">
<Setter Property="WindowStyle" Value="None"/>
<Setter Property="AllowsTransparency" Value="True"/>
<Setter Property="OverridesDefaultStyle" Value="True"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="Window">
<Border CornerRadius="4" x:Name="b1" Width="Auto" Height="Auto" Margin="0" Padding="2" Background="#E5EEF8" BorderBrush="Transparent" BorderThickness="1" >
<Border x:Name="b2" Width="Auto" Height="Auto" Margin="0" Padding="2" Background="#E5EEF8" BorderBrush="Transparent" >
<Grid Background="Transparent" >
<Grid.RowDefinitions >
<RowDefinition Height="25"/>
<RowDefinition ></RowDefinition>
</Grid.RowDefinitions>



<Border x:Name="Titelborder" Opacity="1"
Margin="-1" Padding="0"

CornerRadius="4"
Grid.Row="0" >
<Border.Background>
<LinearGradientBrush StartPoint="0.5,0" EndPoint="0.5,1">
<GradientStop Color="#E5EEF8" Offset="0.4"/>
<GradientStop Color="#D2E4F8" Offset="0.5"/>
</LinearGradientBrush>
</Border.Background>


<Path x:Name="Mini" HorizontalAlignment="Right" VerticalAlignment="Top" Margin="7"
Stroke="Black" Width="10" Height="10"
StrokeThickness="2"
Data="M 0 0 L 10 10 M 0 10 L 10 0"
>

</Path>

</Border>
<Border x:Name="Winborder"
Margin="-1"
Padding="0"
BorderBrush="SkyBlue" BorderThickness="1"
CornerRadius="4" Grid.Row="1">
<Border.Background>
<LinearGradientBrush StartPoint="1.5,0" EndPoint="0.5,1">
<GradientStop Color="White" Offset="0"/>
<GradientStop Color="#95C4FA" Offset="1"/>
</LinearGradientBrush>
</Border.Background>

<ContentPresenter
HorizontalAlignment="Center"
VerticalAlignment="Center"
SnapsToDevicePixels="False"
/>


</Border>

</Grid>
</Border>


</Border>

</ControlTemplate>
</Setter.Value>
</Setter>
</Style>