diff --git a/TIAMSharedUI/Pages/User/SysAdmins/ManageTransfers.razor b/TIAMSharedUI/Pages/User/SysAdmins/ManageTransfers.razor
index baaee0a3..517391f2 100644
--- a/TIAMSharedUI/Pages/User/SysAdmins/ManageTransfers.razor
+++ b/TIAMSharedUI/Pages/User/SysAdmins/ManageTransfers.razor
@@ -11,6 +11,7 @@
 @using TIAMWebApp.Shared.Application.Models.PageModels
 @using TIAMWebApp.Shared.Application.Utility
 @using AyCode.Services.Loggers
+@using TIAM.Services
 @using TIAMWebApp.Shared.Application.Services
 @using TIAMSharedUI.Shared.Components
 @using TIAMSharedUI.Shared.Components.Grids
@@ -71,11 +72,22 @@
                                               IconCssClass="btn-column-chooser"
                                               Click="ColumnChooserButton_Click" />
                                 </div>
-                                
+
+@*                                 <TiamGrid TDataItem="Transfer"
+                                          Logger="_logger"
+                                          SignalRClient="AdminSignalRClient"
+
+                                          GetAllMessageTag="SignalRTags.GetTransfersAsync"
+                                          AddMessageTag="SignalRTags.AddTransferAsync"
+                                          UpdateMessageTag="SignalRTags.UpdateTransferAsync"
+                                          RemoveMessageTag="SignalRTags.RemoveTransferAsync">
+                                </TiamGrid>
+ *@
                                 <TransferGrid @ref="_gridTransfer"
                                           Logger="_logger"
                                           SignalRClient="AdminSignalRClient"
                                           OnDataSourceChanged="DataSourceChanged"
+                                          OnDataSourceItemChanging="DataSourceItemChanging"
                                           OnDataSourceItemChanged="DataSourceItemChanged"
                                           OnDataItemDeleting="DataItemDeleting"
                                           OnDataItemSaving="DataItemSaving"
@@ -348,6 +360,23 @@
         transferEditModel.ContactEmail = "your@email.address";
     }
 
+    private void DataSourceChanged(IList<Transfer> transfers)
+    {
+        _logger.Info("DataSourceChanged called");
+
+        InitializeAppointments(transfers);
+    }
+
+    private void DataSourceItemChanging(Transfer transfer)
+    {
+        _logger.Info("DataSourceItemChanging called");
+    }
+
+    private void DataSourceItemChanged(Transfer transfer)
+    {
+        _logger.Info("DataSourceItemChanged called");
+    }
+
     private void DataItemSaving(GridEditModelSavingEventArgs e)
     {
         _logger.Info("DataItemSaving called");
@@ -358,18 +387,6 @@
         _logger.Info($"DataItemDeleting OnItemDeleting");
     }
 
-    private void DataSourceChanged(IList<Transfer> transfers)
-    {
-        _logger.Info("DataSourceChanged called");
-
-        InitializeAppointments(transfers);
-    }
-
-    private void DataSourceItemChanged(Transfer transfer)
-    {
-        _logger.Info("DataSourceItemChanged called");
-    }
-
     private void RefreshAppointments(Transfer transfer, bool isDelete)
     {
         var appointmentIndex = AppointmentModels.FindIndex(x => x.SourceId == transfer.Id);
@@ -456,5 +473,4 @@
         _gridTransfer.ExpandDetailRow(0);
         _gridTransfer.EndUpdate();
     }
-
 }
\ No newline at end of file
diff --git a/TIAMSharedUI/Shared/Components/Grids/CompanyDetailGrid.cs b/TIAMSharedUI/Shared/Components/Grids/CompanyDetailGrid.cs
new file mode 100644
index 00000000..7e3d2de8
--- /dev/null
+++ b/TIAMSharedUI/Shared/Components/Grids/CompanyDetailGrid.cs
@@ -0,0 +1,17 @@
+using Microsoft.AspNetCore.Components;
+
+namespace TIAMSharedUI.Shared.Components.Grids;
+
+public class CompanyDetailGrid : CompanyGrid
+{
+    protected override Task SetParametersAsyncCore(ParameterView parameters)
+    {
+        var isFirst = IsFirstInitializeParameters;
+
+        return base.SetParametersAsyncCore(parameters);
+
+        if (isFirst)
+        {
+        }
+    }
+}
\ No newline at end of file
diff --git a/TIAMSharedUI/Shared/Components/Grids/CompanyGrid.cs b/TIAMSharedUI/Shared/Components/Grids/CompanyGrid.cs
index 6ec27080..b8cf1f58 100644
--- a/TIAMSharedUI/Shared/Components/Grids/CompanyGrid.cs
+++ b/TIAMSharedUI/Shared/Components/Grids/CompanyGrid.cs
@@ -18,7 +18,7 @@ public class CompanyGrid : TiamGrid<Company>
 
     protected override Task SetParametersAsyncCore(ParameterView parameters)
     {
-        if (!IsInitializedParameters)
+        if (!IsFirstInitializeParameters)
         {
             //ShowFilterRow = true;
             //ShowGroupPanel = true;
diff --git a/TIAMSharedUI/Shared/Components/Grids/TiamGrid.cs b/TIAMSharedUI/Shared/Components/Grids/TiamGrid.cs
index 962edade..f649de48 100644
--- a/TIAMSharedUI/Shared/Components/Grids/TiamGrid.cs
+++ b/TIAMSharedUI/Shared/Components/Grids/TiamGrid.cs
@@ -13,7 +13,7 @@ namespace TIAMSharedUI.Shared.Components.Grids
 {
     public class TiamGrid<TDataItem> : DxGrid where TDataItem : class, IEntityGuid
     {
-        protected bool IsInitializedParameters;
+        protected bool IsFirstInitializeParameters;
         private IList<TDataItem>? _dataSource;
         private string _gridLogName;
 
@@ -80,10 +80,9 @@ namespace TIAMSharedUI.Shared.Components.Grids
         [Parameter] public EventCallback<GridEditModelSavingEventArgs> OnDataItemSaving { get; set; }
        
 
-        [Parameter]
-        public EventCallback<IList<TDataItem>> OnDataSourceChanged { get; set; }
-        [Parameter]
-        public EventCallback<TDataItem> OnDataSourceItemChanged { get; set; }
+        [Parameter] public EventCallback<IList<TDataItem>> OnDataSourceChanged { get; set; }
+        [Parameter] public EventCallback<TDataItem> OnDataSourceItemChanging { get; set; }
+        [Parameter] public EventCallback<TDataItem> OnDataSourceItemChanged { get; set; }
 
         private async Task OnItemSaving(GridEditModelSavingEventArgs e)
         {
@@ -122,10 +121,12 @@ namespace TIAMSharedUI.Shared.Components.Grids
             PostDataToServerAsync(dataItem, RemoveMessageTag, true).Forget();
         }
 
-        public Task RefreshDataSourceAsync()
+        public virtual Task RefreshDataSourceAsync()
         {
             Logger.Info($"{_gridLogName} UpdateAllDataAsync called");
 
+            //if (GetAllMessageTag == 0) return Task.CompletedTask;
+            
             return SignalRClient.GetAllAsync<IList<TDataItem>>(GetAllMessageTag, response =>
             {
                 if (response.Status == SignalResponseStatus.Error)
@@ -139,13 +140,16 @@ namespace TIAMSharedUI.Shared.Components.Grids
             });
         }
 
-        private Task PostDataToServerAsync(TDataItem transfer, int messageTag, bool isDelete = false)
+        public virtual async Task PostDataToServerAsync(TDataItem dataItem, int messageTag, bool isDelete = false)
         {
-            Logger.Info($"{_gridLogName} PostDataToServerAsync called; transferId " + transfer.Id);
+            Logger.Info($"{_gridLogName} PostDataToServerAsync called; transferId " + dataItem.Id);
 
-            RefreshDataSourceItem(transfer, isDelete, false); //egyből látszódik a változás a grid-ben, nem csak a callback lefutásakor! felhasználóbarátabb... - J.
+            //if (messageTag == 0) return;
 
-            return SignalRClient.PostDataAsync(messageTag, transfer, repsonse =>
+            await OnDataSourceItemChanging.InvokeAsync(dataItem);
+            RefreshDataSourceItem(dataItem, isDelete, false); //egyből látszódik a változás a grid-ben, nem csak a callback lefutásakor! felhasználóbarátabb... - J.
+
+            SignalRClient.PostDataAsync(messageTag, dataItem, async repsonse =>
             {
                 if (repsonse.Status != SignalResponseStatus.Success || repsonse.ResponseData == null)
                 {
@@ -154,13 +158,15 @@ namespace TIAMSharedUI.Shared.Components.Grids
                 }
 
                 RefreshDataSourceItem(repsonse.ResponseData, isDelete);
-                InvokeAsync(StateHasChanged).Forget();
-            });
+
+                await OnDataSourceItemChanged.InvokeAsync(dataItem);
+                await InvokeAsync(StateHasChanged);
+            }).Forget();
 
             //transfer = await devAdminSignalClient.PostDataAsync(SignalRTags.UpdateTransferAsync, transfer);
         }
 
-        public Task RefreshDataSourceItem(TDataItem dataItem, bool isDelete, bool invokeItemChanged = true)
+        public void RefreshDataSourceItem(TDataItem dataItem, bool isDelete, bool invokeItemChanged = true)
         {
             var transferIndex = _dataSource.FindIndex(x => x.Id == dataItem.Id);
 
@@ -170,13 +176,11 @@ namespace TIAMSharedUI.Shared.Components.Grids
                 if (transferIndex > -1) _dataSource[transferIndex] = dataItem;
                 else _dataSource.Add(dataItem);
             }
-
-            return invokeItemChanged ? OnDataSourceItemChanged.InvokeAsync(dataItem) : Task.CompletedTask;
         }
 
         protected override Task SetParametersAsyncCore(ParameterView parameters)
         {
-            if (!IsInitializedParameters)
+            if (!IsFirstInitializeParameters)
             {
                 base.DataItemDeleting = EventCallback.Factory.Create<GridDataItemDeletingEventArgs>(this, OnItemDeleting);
                 base.EditModelSaving = EventCallback.Factory.Create<GridEditModelSavingEventArgs>(this, OnItemSaving);
@@ -186,7 +190,7 @@ namespace TIAMSharedUI.Shared.Components.Grids
                 //ShowGroupPanel = true;
                 //AllowSort = false;
 
-                IsInitializedParameters = true;
+                IsFirstInitializeParameters = true;
             }
 
             return base.SetParametersAsyncCore(parameters);
diff --git a/TIAMSharedUI/Shared/Components/Grids/TransferDetailGrid.cs b/TIAMSharedUI/Shared/Components/Grids/TransferDetailGrid.cs
new file mode 100644
index 00000000..abd9f576
--- /dev/null
+++ b/TIAMSharedUI/Shared/Components/Grids/TransferDetailGrid.cs
@@ -0,0 +1,17 @@
+using Microsoft.AspNetCore.Components;
+
+namespace TIAMSharedUI.Shared.Components.Grids;
+
+public class TransferDetailGrid : TransferGrid
+{
+    protected override Task SetParametersAsyncCore(ParameterView parameters)
+    {
+        var isFirst = IsFirstInitializeParameters;
+
+        return base.SetParametersAsyncCore(parameters);
+
+        if (isFirst)
+        {
+        }
+    }
+}
\ No newline at end of file
diff --git a/TIAMSharedUI/Shared/Components/Grids/TransferGrid.cs b/TIAMSharedUI/Shared/Components/Grids/TransferGrid.cs
index c5772f70..8dfabc7d 100644
--- a/TIAMSharedUI/Shared/Components/Grids/TransferGrid.cs
+++ b/TIAMSharedUI/Shared/Components/Grids/TransferGrid.cs
@@ -18,7 +18,7 @@ public class TransferGrid : TiamGrid<Transfer>
 
     protected override Task SetParametersAsyncCore(ParameterView parameters)
     {
-        if (!IsInitializedParameters)
+        if (!IsFirstInitializeParameters)
         {
             //ShowFilterRow = true;
             //ShowGroupPanel = true;