diff --git a/IFCGeoRefCheckerGUI/UpdateGeoRefWindow.xaml b/IFCGeoRefCheckerGUI/UpdateGeoRefWindow.xaml
index cd62b45..fad7ff9 100644
--- a/IFCGeoRefCheckerGUI/UpdateGeoRefWindow.xaml
+++ b/IFCGeoRefCheckerGUI/UpdateGeoRefWindow.xaml
@@ -6,7 +6,7 @@
         xmlns:local="clr-namespace:IFCGeoRefCheckerGUI"
         xmlns:vm="clr-namespace:IFCGeoRefCheckerGUI.ViewModels"
         xmlns:vc="clr-namespace:IFCGeoRefCheckerGUI.ValueConverters"
-        mc:Ignorable="d" Icon="/IFCGeorefCheckerGUI;component/images/DD-BIM-ICON.ico"
+        mc:Ignorable="d"
         Title="UpdateGeoRefWindow" Height="600" Width="800"
         SizeToContent="Height">
     <Window.DataContext>
@@ -57,8 +57,8 @@
                                 </TextBox.Text>
                             </TextBox>
                             <Label Content="Address Lines:" Grid.Row="1" Grid.Column="0"/>
-                            <TextBox Text="{Binding AddressLine1}"  Grid.Row="1" Grid.Column="1" Grid.ColumnSpan="2" VerticalAlignment="Center"/>
-                            <TextBox Text="{Binding AddressLine2}" Grid.Row="2" Grid.Column="1" Grid.ColumnSpan="2" VerticalAlignment="Center"/>
+                            <TextBox Text="{Binding AddressLine1}"  Grid.Row="1" Grid.Column="1" Grid.ColumnSpan="3" VerticalAlignment="Center"/>
+                            <TextBox Text="{Binding AddressLine2}" Grid.Row="2" Grid.Column="1" Grid.ColumnSpan="3" VerticalAlignment="Center"/>
                             <Label Content="Postal Code:" Grid.Row="3" Grid.Column="0"/>
                             <TextBox Text="{Binding PostalCode}" Grid.Row="3" Grid.Column="1" VerticalAlignment="Center"/>
                             <Label Content="Town:" Grid.Row="3" Grid.Column="2"/>
@@ -74,7 +74,7 @@
         </GroupBox>
 
         <GroupBox Header="Geographic Location of Site" Grid.Row="1" Margin="0,5,0,5">
-            <TabControl ItemsSource="{Binding Level20s}">
+            <TabControl ItemsSource="{Binding Level20s}" Margin="0,4,0,4">
                 <TabControl.ItemTemplate>
                     <DataTemplate>
                         <TextBlock Text="IfcSite"/>
@@ -114,7 +114,7 @@
                             <StackPanel  Grid.Row="2" Grid.Column="0" Margin="0,5,0,5">
                                 <DockPanel >
                                     <Label Content="RefElevation"/>
-                                    <TextBox VerticalAlignment="Center"/>
+                                    <TextBox Text="{Binding Elevation}"  VerticalAlignment="Center"/>
                                 </DockPanel>
                             </StackPanel>
                         </Grid>
@@ -203,12 +203,12 @@
                     <ColumnDefinition Width="Auto"/>
                 </Grid.ColumnDefinitions>
                 <Label Content="Output Path:" Grid.Column="0"/>
-                <TextBox Grid.Column="1"></TextBox>
-                <Button Content="Set Path" Grid.Column="2" Margin="5,0,5,0" Padding="5,1,5,1"/>
-                <Button Content="Start Export" Grid.Column="3" Margin="5,0,5,0" Padding="5,1,5,1"/>
+                <TextBox Text="{Binding OutIfcPath}" Grid.Column="1" VerticalAlignment="Center" Padding="0,3,0,3"></TextBox>
+                <Button Content="Set Path" x:Name="setOutBtn" Grid.Column="2" Margin="5,0,5,0" Padding="5,1,5,1" Click="setOutBtn_Click"/>
+                <Button Content="Start Export" x:Name="exportBtn" Grid.Column="3" Margin="5,0,5,0" Padding="5,1,5,1" Click="exportBtn_Click"/>
             </Grid>
         </GroupBox>
         
-        <Button Content="MyButton" Grid.Row="4" Click="Button_Click" Margin="0,5,0,5"></Button>
+        
     </Grid>
 </Window>
diff --git a/IFCGeoRefCheckerGUI/UpdateGeoRefWindow.xaml.cs b/IFCGeoRefCheckerGUI/UpdateGeoRefWindow.xaml.cs
index c1d85db..d37ba36 100644
--- a/IFCGeoRefCheckerGUI/UpdateGeoRefWindow.xaml.cs
+++ b/IFCGeoRefCheckerGUI/UpdateGeoRefWindow.xaml.cs
@@ -1,4 +1,7 @@
-using System;
+using IFCGeoRefCheckerGUI.ValueConverters;
+using IFCGeoRefCheckerGUI.ViewModels;
+using Microsoft.Win32;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
@@ -24,10 +27,50 @@ public UpdateGeoRefWindow()
             InitializeComponent();
         }
 
-        private void Button_Click(object sender, RoutedEventArgs e)
+        private void setOutBtn_Click(object sender, RoutedEventArgs e)
         {
-            Console.WriteLine("hier");
+            var vm = (UpdateViewModel)DataContext;
+
+            var outFileName = System.IO.Path.GetFileName(vm.OutIfcPath);
+            var defaultDirectory = System.IO.Path.GetDirectoryName(vm.OutIfcPath);
+
+            var dialog = new SaveFileDialog
+            {
+                Title = "Select location for exported Ifc file",
+                FileName = outFileName,
+                InitialDirectory = defaultDirectory,
+                Filter = "IFC files (*.ifc)|*.ifc|All files (*.*)|*.*"
+            };
+
+            var result = dialog.ShowDialog();
+            
+            if (result == true)
+            {
+                vm.OutIfcPath = dialog.FileName;
+            }
         }
 
+        private void exportBtn_Click(object sender, RoutedEventArgs e)
+        {
+            var vm = (UpdateViewModel)DataContext;
+
+            var selectedPath = vm.OutIfcPath;
+
+            if (System.IO.File.Exists(selectedPath))
+            {
+                var mbr = MessageBox.Show("File already exists!\nDo you want to overwrite it?", "File already exists!", MessageBoxButton.OKCancel, MessageBoxImage.Question);
+                if (mbr == MessageBoxResult.OK)
+                {
+                    var inputIsValid = InputValidator.IsValid(this);
+                    if (!inputIsValid)
+                    {
+                        MessageBox.Show("One or more input fields are invalid. Please correct them!", "Validation errors", MessageBoxButton.OK, MessageBoxImage.Exclamation);
+                        return;
+                    }
+                    vm.StartExport!.Execute(null);
+                    this.Close();
+                }
+            }
+        }
     }
 }