diff --git a/Correlator/Correlator.csproj b/Correlator/Correlator.csproj
index 731cc8d..711faa4 100644
--- a/Correlator/Correlator.csproj
+++ b/Correlator/Correlator.csproj
@@ -286,7 +286,6 @@
     <Compile Include="Events\ClearOscillogramEvent.cs" />
     <Compile Include="Events\NumericKeypadEvent.cs" />
     <Compile Include="Events\RenderOscillogramEvent.cs" />
-    <Compile Include="Events\UpdateStepBarEvent.cs" />
     <Compile Include="Model\AudioFile.cs" />
     <Compile Include="Model\CorrelatorConfigModel.cs" />
     <Compile Include="Model\CorrelatorDataModel.cs" />

diff --git a/Correlator/Correlator.csproj b/Correlator/Correlator.csproj
index 731cc8d..711faa4 100644
--- a/Correlator/Correlator.csproj
+++ b/Correlator/Correlator.csproj
@@ -286,7 +286,6 @@
     <Compile Include="Events\ClearOscillogramEvent.cs" />
     <Compile Include="Events\NumericKeypadEvent.cs" />
     <Compile Include="Events\RenderOscillogramEvent.cs" />
-    <Compile Include="Events\UpdateStepBarEvent.cs" />
     <Compile Include="Model\AudioFile.cs" />
     <Compile Include="Model\CorrelatorConfigModel.cs" />
     <Compile Include="Model\CorrelatorDataModel.cs" />
diff --git a/Correlator/Dialog/ImportHydrophoneDataDialog.xaml b/Correlator/Dialog/ImportHydrophoneDataDialog.xaml
index a2b6544..96b45bc 100644
--- a/Correlator/Dialog/ImportHydrophoneDataDialog.xaml
+++ b/Correlator/Dialog/ImportHydrophoneDataDialog.xaml
@@ -207,7 +207,10 @@
                 <ColumnDefinition Width="Auto" />
             </Grid.ColumnDefinitions>
 
-            <hc:StepBar x:Name="ImportDataStepBar" Grid.Column="0">
+            <hc:StepBar
+                x:Name="ImportDataStepBar"
+                Grid.Column="0"
+                StepIndex="{Binding CurrentStepIndex}">
                 <b:Interaction.Triggers>
                     <b:EventTrigger EventName="StepChanged">
                         <b:InvokeCommandAction Command="{Binding StepChangedCommand}" CommandParameter="{Binding ElementName=ImportDataStepBar}" />

diff --git a/Correlator/Correlator.csproj b/Correlator/Correlator.csproj
index 731cc8d..711faa4 100644
--- a/Correlator/Correlator.csproj
+++ b/Correlator/Correlator.csproj
@@ -286,7 +286,6 @@
     <Compile Include="Events\ClearOscillogramEvent.cs" />
     <Compile Include="Events\NumericKeypadEvent.cs" />
     <Compile Include="Events\RenderOscillogramEvent.cs" />
-    <Compile Include="Events\UpdateStepBarEvent.cs" />
     <Compile Include="Model\AudioFile.cs" />
     <Compile Include="Model\CorrelatorConfigModel.cs" />
     <Compile Include="Model\CorrelatorDataModel.cs" />
diff --git a/Correlator/Dialog/ImportHydrophoneDataDialog.xaml b/Correlator/Dialog/ImportHydrophoneDataDialog.xaml
index a2b6544..96b45bc 100644
--- a/Correlator/Dialog/ImportHydrophoneDataDialog.xaml
+++ b/Correlator/Dialog/ImportHydrophoneDataDialog.xaml
@@ -207,7 +207,10 @@
                 <ColumnDefinition Width="Auto" />
             </Grid.ColumnDefinitions>
 
-            <hc:StepBar x:Name="ImportDataStepBar" Grid.Column="0">
+            <hc:StepBar
+                x:Name="ImportDataStepBar"
+                Grid.Column="0"
+                StepIndex="{Binding CurrentStepIndex}">
                 <b:Interaction.Triggers>
                     <b:EventTrigger EventName="StepChanged">
                         <b:InvokeCommandAction Command="{Binding StepChangedCommand}" CommandParameter="{Binding ElementName=ImportDataStepBar}" />
diff --git a/Correlator/Dialog/ImportHydrophoneDataDialog.xaml.cs b/Correlator/Dialog/ImportHydrophoneDataDialog.xaml.cs
index 9791aa6..905d365 100644
--- a/Correlator/Dialog/ImportHydrophoneDataDialog.xaml.cs
+++ b/Correlator/Dialog/ImportHydrophoneDataDialog.xaml.cs
@@ -1,6 +1,4 @@
 using System.Windows.Controls;
-using Correlator.Events;
-using Prism.Events;
 
 namespace Correlator.Dialog
 {
@@ -9,11 +7,9 @@
     /// </summary>
     public partial class ImportHydrophoneDataDialog : UserControl
     {
-        public ImportHydrophoneDataDialog(IEventAggregator eventAggregator)
+        public ImportHydrophoneDataDialog()
         {
             InitializeComponent();
-
-            eventAggregator.GetEvent<UpdateStepBarEvent>().Subscribe(delegate { ImportDataStepBar.Next(); });
         }
     }
 }
\ No newline at end of file

diff --git a/Correlator/Correlator.csproj b/Correlator/Correlator.csproj
index 731cc8d..711faa4 100644
--- a/Correlator/Correlator.csproj
+++ b/Correlator/Correlator.csproj
@@ -286,7 +286,6 @@
     <Compile Include="Events\ClearOscillogramEvent.cs" />
     <Compile Include="Events\NumericKeypadEvent.cs" />
     <Compile Include="Events\RenderOscillogramEvent.cs" />
-    <Compile Include="Events\UpdateStepBarEvent.cs" />
     <Compile Include="Model\AudioFile.cs" />
     <Compile Include="Model\CorrelatorConfigModel.cs" />
     <Compile Include="Model\CorrelatorDataModel.cs" />
diff --git a/Correlator/Dialog/ImportHydrophoneDataDialog.xaml b/Correlator/Dialog/ImportHydrophoneDataDialog.xaml
index a2b6544..96b45bc 100644
--- a/Correlator/Dialog/ImportHydrophoneDataDialog.xaml
+++ b/Correlator/Dialog/ImportHydrophoneDataDialog.xaml
@@ -207,7 +207,10 @@
                 <ColumnDefinition Width="Auto" />
             </Grid.ColumnDefinitions>
 
-            <hc:StepBar x:Name="ImportDataStepBar" Grid.Column="0">
+            <hc:StepBar
+                x:Name="ImportDataStepBar"
+                Grid.Column="0"
+                StepIndex="{Binding CurrentStepIndex}">
                 <b:Interaction.Triggers>
                     <b:EventTrigger EventName="StepChanged">
                         <b:InvokeCommandAction Command="{Binding StepChangedCommand}" CommandParameter="{Binding ElementName=ImportDataStepBar}" />
diff --git a/Correlator/Dialog/ImportHydrophoneDataDialog.xaml.cs b/Correlator/Dialog/ImportHydrophoneDataDialog.xaml.cs
index 9791aa6..905d365 100644
--- a/Correlator/Dialog/ImportHydrophoneDataDialog.xaml.cs
+++ b/Correlator/Dialog/ImportHydrophoneDataDialog.xaml.cs
@@ -1,6 +1,4 @@
 using System.Windows.Controls;
-using Correlator.Events;
-using Prism.Events;
 
 namespace Correlator.Dialog
 {
@@ -9,11 +7,9 @@
     /// </summary>
     public partial class ImportHydrophoneDataDialog : UserControl
     {
-        public ImportHydrophoneDataDialog(IEventAggregator eventAggregator)
+        public ImportHydrophoneDataDialog()
         {
             InitializeComponent();
-
-            eventAggregator.GetEvent<UpdateStepBarEvent>().Subscribe(delegate { ImportDataStepBar.Next(); });
         }
     }
 }
\ No newline at end of file
diff --git a/Correlator/Events/UpdateStepBarEvent.cs b/Correlator/Events/UpdateStepBarEvent.cs
deleted file mode 100644
index 25ba96c..0000000
--- a/Correlator/Events/UpdateStepBarEvent.cs
+++ /dev/null
@@ -1,8 +0,0 @@
-using Prism.Events;
-
-namespace Correlator.Events
-{
-    public class UpdateStepBarEvent : PubSubEvent
-    {
-    }
-}
\ No newline at end of file

diff --git a/Correlator/Correlator.csproj b/Correlator/Correlator.csproj
index 731cc8d..711faa4 100644
--- a/Correlator/Correlator.csproj
+++ b/Correlator/Correlator.csproj
@@ -286,7 +286,6 @@
     <Compile Include="Events\ClearOscillogramEvent.cs" />
     <Compile Include="Events\NumericKeypadEvent.cs" />
     <Compile Include="Events\RenderOscillogramEvent.cs" />
-    <Compile Include="Events\UpdateStepBarEvent.cs" />
     <Compile Include="Model\AudioFile.cs" />
     <Compile Include="Model\CorrelatorConfigModel.cs" />
     <Compile Include="Model\CorrelatorDataModel.cs" />
diff --git a/Correlator/Dialog/ImportHydrophoneDataDialog.xaml b/Correlator/Dialog/ImportHydrophoneDataDialog.xaml
index a2b6544..96b45bc 100644
--- a/Correlator/Dialog/ImportHydrophoneDataDialog.xaml
+++ b/Correlator/Dialog/ImportHydrophoneDataDialog.xaml
@@ -207,7 +207,10 @@
                 <ColumnDefinition Width="Auto" />
             </Grid.ColumnDefinitions>
 
-            <hc:StepBar x:Name="ImportDataStepBar" Grid.Column="0">
+            <hc:StepBar
+                x:Name="ImportDataStepBar"
+                Grid.Column="0"
+                StepIndex="{Binding CurrentStepIndex}">
                 <b:Interaction.Triggers>
                     <b:EventTrigger EventName="StepChanged">
                         <b:InvokeCommandAction Command="{Binding StepChangedCommand}" CommandParameter="{Binding ElementName=ImportDataStepBar}" />
diff --git a/Correlator/Dialog/ImportHydrophoneDataDialog.xaml.cs b/Correlator/Dialog/ImportHydrophoneDataDialog.xaml.cs
index 9791aa6..905d365 100644
--- a/Correlator/Dialog/ImportHydrophoneDataDialog.xaml.cs
+++ b/Correlator/Dialog/ImportHydrophoneDataDialog.xaml.cs
@@ -1,6 +1,4 @@
 using System.Windows.Controls;
-using Correlator.Events;
-using Prism.Events;
 
 namespace Correlator.Dialog
 {
@@ -9,11 +7,9 @@
     /// </summary>
     public partial class ImportHydrophoneDataDialog : UserControl
     {
-        public ImportHydrophoneDataDialog(IEventAggregator eventAggregator)
+        public ImportHydrophoneDataDialog()
         {
             InitializeComponent();
-
-            eventAggregator.GetEvent<UpdateStepBarEvent>().Subscribe(delegate { ImportDataStepBar.Next(); });
         }
     }
 }
\ No newline at end of file
diff --git a/Correlator/Events/UpdateStepBarEvent.cs b/Correlator/Events/UpdateStepBarEvent.cs
deleted file mode 100644
index 25ba96c..0000000
--- a/Correlator/Events/UpdateStepBarEvent.cs
+++ /dev/null
@@ -1,8 +0,0 @@
-using Prism.Events;
-
-namespace Correlator.Events
-{
-    public class UpdateStepBarEvent : PubSubEvent
-    {
-    }
-}
\ No newline at end of file
diff --git a/Correlator/ViewModels/ImportHydrophoneDataDialogViewModel.cs b/Correlator/ViewModels/ImportHydrophoneDataDialogViewModel.cs
index 5f6b5ab..f113a80 100644
--- a/Correlator/ViewModels/ImportHydrophoneDataDialogViewModel.cs
+++ b/Correlator/ViewModels/ImportHydrophoneDataDialogViewModel.cs
@@ -4,7 +4,6 @@
 using System.Linq;
 using System.Threading;
 using System.Windows;
-using Correlator.Events;
 using Correlator.Model;
 using Correlator.SensorHubTag;
 using Correlator.Util;
@@ -12,7 +11,6 @@
 using Microsoft.Win32;
 using Newtonsoft.Json;
 using Prism.Commands;
-using Prism.Events;
 using Prism.Mvvm;
 using Prism.Services.Dialogs;
 using MessageBox = System.Windows.MessageBox;
@@ -33,7 +31,6 @@
 
         public event Action<IDialogResult> RequestClose;
         private bool _isRedSensor;
-        private readonly IEventAggregator _eventAggregator;
         private readonly BackgroundWorker _backgroundWorker;
         private readonly CorrelatorDataModel _dataModel;
         private ParamConfigModel _configModel;
@@ -138,12 +135,22 @@
             }
         }
 
+        private int _currentStepIndex;
+
+        public int CurrentStepIndex
+        {
+            get => _currentStepIndex;
+            set
+            {
+                _currentStepIndex = value;
+                RaisePropertyChanged();
+            }
+        }
+
         #endregion
 
-        public ImportHydrophoneDataDialogViewModel(IEventAggregator eventAggregator)
+        public ImportHydrophoneDataDialogViewModel()
         {
-            _eventAggregator = eventAggregator;
-
             _backgroundWorker = new BackgroundWorker();
             _backgroundWorker.WorkerReportsProgress = true;
             _backgroundWorker.WorkerSupportsCancellation = true;
@@ -198,8 +205,7 @@
                 //参数配置就一行
                 var configJson = fromFile[0];
                 _configModel = JsonConvert.DeserializeObject<ParamConfigModel>(configJson);
-                //更新步骤条
-                _eventAggregator.GetEvent<UpdateStepBarEvent>().Publish();
+                CurrentStepIndex = 1;
             }
         }
 
@@ -322,8 +328,7 @@
                 RedProgressBarValue = e.ProgressPercentage;
                 if (RedProgressBarValue == 100)
                 {
-                    //更新步骤条
-                    _eventAggregator.GetEvent<UpdateStepBarEvent>().Publish();
+                    CurrentStepIndex = 2;
                 }
             }
             else
@@ -331,8 +336,7 @@
                 BlueProgressBarValue = e.ProgressPercentage;
                 if (BlueProgressBarValue == 100)
                 {
-                    //更新步骤条
-                    _eventAggregator.GetEvent<UpdateStepBarEvent>().Publish();
+                    CurrentStepIndex = 3;
                 }
             }
         }