Adding Null Protection in Few Blazor Components to Fix Design Time Analyzer Errors

Author: EyeBrawler

MESS/MESS.Blazor/Components/Pages/Phoebe/MenuBar/MenuBarPhoebe.razor

@@ -164,16 +164,19 @@
     Visible="@_showExportDialog"
     VisibleChanged="@(val => _showExportDialog = val)" />
 
-<ProductAssociationDialog
-    AllProducts="@Products"
-    SelectedProducts="@(ActiveDialog.SelectedProductNames)"
-    SelectedProductsChanged="OnDialogProductsChanged"
-    IsVisible="@ActiveDialog.IsVisible"
-    IsVisibleChanged="@(val => ActiveDialog.IsVisible = val)"
-    HeaderText="@ActiveDialog.HeaderText"
-    ConfirmButtonText="@ActiveDialog.ConfirmButtonText"
-    AllowsRenaming="@(ActiveDialog.Type == DialogType.SaveAs)"
-    OnConfirmed="HandleDialogConfirmed" />
+@if (Products is not null)
+{
+    <ProductAssociationDialog
+        AllProducts="@Products"
+        SelectedProducts="@(ActiveDialog.SelectedProductNames)"
+        SelectedProductsChanged="OnDialogProductsChanged"
+        IsVisible="@ActiveDialog.IsVisible"
+        IsVisibleChanged="@(val => ActiveDialog.IsVisible = val)"
+        HeaderText="@ActiveDialog.HeaderText"
+        ConfirmButtonText="@ActiveDialog.ConfirmButtonText"
+        AllowsRenaming="@(ActiveDialog.Type == DialogType.SaveAs)"
+        OnConfirmed="HandleDialogConfirmed" />
+}
 
 @code {
     private string? ActiveLineOperator { get; set; }

MESS/MESS.Blazor/Components/Pages/Phoebe/WorkInstruction/Export/WorkInstructionExportDialog.razor

@@ -32,13 +32,16 @@
         </FluentDialogBody>
 
         <FluentDialogFooter>
-            <WorkInstructionExportButton 
-                @ref="_exportButton"
-                WorkInstruction="WorkInstruction"
-                OnDownloadComplete="Close"
-                OnDownloadStateChanged="HandleDownloadStateChanged"
-                OnProgressChanged="HandleProgressChanged"/>
-            
+            @if (WorkInstruction is not null)
+            {
+                <WorkInstructionExportButton 
+                    @ref="_exportButton"
+                    WorkInstruction="WorkInstruction"
+                    OnDownloadComplete="Close"
+                    OnDownloadStateChanged="HandleDownloadStateChanged"
+                    OnProgressChanged="HandleProgressChanged"/>
+            }
+
             <button type="button"
                     class="btn btn-sm btn-outline-secondary"
                     @onclick="CancelExport">