diff --git a/EnterMaskDialog.xaml b/EnterMaskDialog.xaml
new file mode 100644
index 00000000..3fa1194c
--- /dev/null
+++ b/EnterMaskDialog.xaml
@@ -0,0 +1,17 @@
+<Window x:Class="GARbro.GUI.EnterMaskDialog"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:s="clr-namespace:GARbro.GUI.Strings"
+        xmlns:ctl="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Input.Toolkit"
+        Background="{DynamicResource {x:Static SystemColors.ControlBrushKey}}"
+        Title="{x:Static s:guiStrings.TextSelectFiles}" SizeToContent="WidthAndHeight" ShowInTaskbar="False"
+        WindowStartupLocation="CenterOwner" ResizeMode="NoResize">
+    <StackPanel Orientation="Vertical" Margin="10">
+        <TextBlock Text="{x:Static s:guiStrings.LabelEnterMask}"/>
+        <TextBox Name="Mask"/>
+        <StackPanel Orientation="Horizontal" Margin="0,10,0,0">
+            <Button Width="75" Height="25" Content="{x:Static s:guiStrings.ButtonOK}" IsDefault="True" Margin="0,0,10,0" Click="Button_Click"/>
+            <Button Width="75" Height="25" Content="{x:Static s:guiStrings.ButtonCancel}" IsCancel="True"/>
+        </StackPanel>
+    </StackPanel>
+</Window>
diff --git a/EnterMaskDialog.xaml.cs b/EnterMaskDialog.xaml.cs
new file mode 100644
index 00000000..82a84daa
--- /dev/null
+++ b/EnterMaskDialog.xaml.cs
@@ -0,0 +1,27 @@
+using System.Collections.Generic;
+using System.Windows;
+using System.Windows.Input;
+
+namespace GARbro.GUI
+{
+    /// <summary>
+    /// Interaction logic for EnterMaskDialog.xaml
+    /// </summary>
+    public partial class EnterMaskDialog : Window
+    {
+        public EnterMaskDialog (IEnumerable<string> mask_list)
+        {
+            InitializeComponent ();
+//            Mask.ItemsSource = mask_list;
+            Mask.Text = "*.*";
+            Mask.SelectionStart = 2;
+            Mask.SelectionLength = 1;
+            FocusManager.SetFocusedElement (this, Mask);
+        }
+
+        private void Button_Click (object sender, RoutedEventArgs e)
+        {
+            this.DialogResult = true;
+        }
+    }
+}