From 2d346817a04a56c701b4041468394662e76919e5 Mon Sep 17 00:00:00 2001 From: Ramya Date: Wed, 12 Aug 2026 17:09:18 +0530 Subject: [PATCH 1/4] 1042035: Added Sample for Annotation template undo redo --- .../AnnotationTemplateUndoRedo_Net10.csproj | 15 ++ .../Components/App.razor | 25 ++++ .../Components/Layout/MainLayout.razor | 8 ++ .../Components/Layout/MainLayout.razor.css | 98 +++++++++++++ .../Components/Pages/Home.razor | 135 ++++++++++++++++++ .../Components/Routes.razor | 6 + .../Components/_Imports.razor | 13 ++ .../AnnotationTemplateUndoRedo/Program.cs | 30 ++++ .../Properties/launchSettings.json | 23 +++ .../appsettings.Development.json | 8 ++ .../appsettings.json | 9 ++ .../wwwroot/app.css | 60 ++++++++ 12 files changed, 430 insertions(+) create mode 100644 KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo_Net10.csproj create mode 100644 KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Components/App.razor create mode 100644 KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Components/Layout/MainLayout.razor create mode 100644 KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Components/Layout/MainLayout.razor.css create mode 100644 KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Components/Pages/Home.razor create mode 100644 KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Components/Routes.razor create mode 100644 KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Components/_Imports.razor create mode 100644 KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Program.cs create mode 100644 KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Properties/launchSettings.json create mode 100644 KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/appsettings.Development.json create mode 100644 KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/appsettings.json create mode 100644 KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/wwwroot/app.css diff --git a/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo_Net10.csproj b/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo_Net10.csproj new file mode 100644 index 00000000..042eb297 --- /dev/null +++ b/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo_Net10.csproj @@ -0,0 +1,15 @@ + + + + net10.0 + enable + enable + true + + + + + + + + diff --git a/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Components/App.razor b/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Components/App.razor new file mode 100644 index 00000000..81f7373a --- /dev/null +++ b/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Components/App.razor @@ -0,0 +1,25 @@ + + + + + + + + + + + + + + + + + + + + + + + + + diff --git a/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Components/Layout/MainLayout.razor b/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Components/Layout/MainLayout.razor new file mode 100644 index 00000000..2382b486 --- /dev/null +++ b/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Components/Layout/MainLayout.razor @@ -0,0 +1,8 @@ +@inherits LayoutComponentBase + +
+
+ @Body +
+
+ diff --git a/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Components/Layout/MainLayout.razor.css b/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Components/Layout/MainLayout.razor.css new file mode 100644 index 00000000..38d1f259 --- /dev/null +++ b/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Components/Layout/MainLayout.razor.css @@ -0,0 +1,98 @@ +.page { + position: relative; + display: flex; + flex-direction: column; +} + +main { + flex: 1; +} + +.sidebar { + background-image: linear-gradient(180deg, rgb(5, 39, 103) 0%, #3a0647 70%); +} + +.top-row { + background-color: #f7f7f7; + border-bottom: 1px solid #d6d5d5; + justify-content: flex-end; + height: 3.5rem; + display: flex; + align-items: center; +} + + .top-row ::deep a, .top-row ::deep .btn-link { + white-space: nowrap; + margin-left: 1.5rem; + text-decoration: none; + } + + .top-row ::deep a:hover, .top-row ::deep .btn-link:hover { + text-decoration: underline; + } + + .top-row ::deep a:first-child { + overflow: hidden; + text-overflow: ellipsis; + } + +@media (max-width: 640.98px) { + .top-row { + justify-content: space-between; + } + + .top-row ::deep a, .top-row ::deep .btn-link { + margin-left: 0; + } +} + +@media (min-width: 641px) { + .page { + flex-direction: row; + } + + .sidebar { + width: 250px; + height: 100vh; + position: sticky; + top: 0; + } + + .top-row { + position: sticky; + top: 0; + z-index: 1; + } + + .top-row.auth ::deep a:first-child { + flex: 1; + text-align: right; + width: 0; + } + + .top-row, article { + padding-left: 2rem !important; + padding-right: 1.5rem !important; + } +} + +#blazor-error-ui { + color-scheme: light only; + background: lightyellow; + bottom: 0; + box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.2); + box-sizing: border-box; + display: none; + left: 0; + padding: 0.6rem 1.25rem 0.7rem 1.25rem; + position: fixed; + width: 100%; + z-index: 1000; +} + + #blazor-error-ui .dismiss { + cursor: pointer; + position: absolute; + right: 0.75rem; + top: 0.5rem; + } diff --git a/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Components/Pages/Home.razor b/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Components/Pages/Home.razor new file mode 100644 index 00000000..9199e085 --- /dev/null +++ b/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Components/Pages/Home.razor @@ -0,0 +1,135 @@ +@page "/" + +@using Syncfusion.Blazor.Diagram +@using Syncfusion.Blazor.Buttons + + + + + + + + + + +
+ @if (!string.IsNullOrEmpty(context.Content)) + { + @((MarkupString)context.Content) + } +
+ + + + + + +@code { + + private SfDiagramComponent diagram; + private DiagramObjectCollection nodes; + private bool isAnnotationTemplate = false; + + // This event is triggered before a new entry is added to the history stack. + private void OnHistoryAdding(HistoryAddingEventArgs entry) + { + if (isAnnotationTemplate) + { + entry.Cancel = true; // To cancel diagram's undo/redo action. + } + } + + // This methods enable you to implement custom logic for undo + private void onCustomUndo(HistoryEntryBase entry) + { + if (entry.UndoObject != null && entry.UndoObject is Node node) + { + // To prevent property change entry + isAnnotationTemplate = true; + diagram.Nodes[0].Annotations[0].Content = node.Annotations?[0].Content; + isAnnotationTemplate = false; + } + } + // This methods enable you to implement custom logic for redo + private void onCustomRedo(HistoryEntryBase entry) + { + if (entry.RedoObject != null && entry.RedoObject is Node node) + { + // To prevent property change entry + isAnnotationTemplate = true; + diagram.Nodes[0].Annotations[0].Content = node.Annotations?[0].Content; + isAnnotationTemplate = false; + } + } + + protected override void OnInitialized() + { + InitializedDiagram(); + } + + private void InitializedDiagram() + { + nodes = new DiagramObjectCollection(); + Node node = new Node() + { + ID = "node", + Width = 100, + Height = 100, + OffsetX = 100, + OffsetY = 100, + Annotations = new DiagramObjectCollection() + { + new ShapeAnnotation { Content = "

Node

", UseTemplate = true, Width = 100, Height = 100 } + }, + Style = new ShapeStyle() + { + Fill = "#6495ED", + StrokeColor = "white" + }, + }; + nodes.Add(node); + + } + private async void UpdateAnnotation(string annotationContent) + { + diagram.BeginUpdate(); + + HistoryEntry entry = new HistoryEntry(); + + (entry.UndoObject) = diagram.Nodes?[0].Clone() as Node; + entry.Type = HistoryEntryType.Undo; + + // To prevent property change entry + isAnnotationTemplate = true; + diagram.Nodes[0].Annotations[0].Content = annotationContent; + isAnnotationTemplate = false; + + (entry.RedoObject) = diagram.Nodes?[0].Clone() as Node; + + diagram.AddHistoryEntry(entry); + + await diagram.EndUpdateAsync(); + } + private void UpdateAnnotation1() + { + UpdateAnnotation("Updated Annotation 1"); + } + + private void UpdateAnnotation2() + { + UpdateAnnotation("Updated Annotation 2"); + } + +} diff --git a/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Components/Routes.razor b/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Components/Routes.razor new file mode 100644 index 00000000..f756e19d --- /dev/null +++ b/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Components/Routes.razor @@ -0,0 +1,6 @@ + + + + + + diff --git a/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Components/_Imports.razor b/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Components/_Imports.razor new file mode 100644 index 00000000..c216fe7e --- /dev/null +++ b/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Components/_Imports.razor @@ -0,0 +1,13 @@ +@using System.Net.Http +@using System.Net.Http.Json +@using Microsoft.AspNetCore.Components.Forms +@using Microsoft.AspNetCore.Components.Routing +@using Microsoft.AspNetCore.Components.Web +@using static Microsoft.AspNetCore.Components.Web.RenderMode +@using Microsoft.AspNetCore.Components.Web.Virtualization +@using Microsoft.JSInterop +@using AnnotationTemplateUndoRedo_Net10 +@using AnnotationTemplateUndoRedo_Net10.Components +@using AnnotationTemplateUndoRedo_Net10.Components.Layout +@using Syncfusion.Blazor; +@using Syncfusion.Blazor.Diagram; \ No newline at end of file diff --git a/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Program.cs b/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Program.cs new file mode 100644 index 00000000..e53425fe --- /dev/null +++ b/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Program.cs @@ -0,0 +1,30 @@ +using AnnotationTemplateUndoRedo_Net10.Components; +using Syncfusion.Blazor; + +var builder = WebApplication.CreateBuilder(args); + +// Add services to the container. +builder.Services.AddRazorComponents() + .AddInteractiveServerComponents(); + +builder.Services.AddSyncfusionBlazor(); + +var app = builder.Build(); + +// Configure the HTTP request pipeline. +if (!app.Environment.IsDevelopment()) +{ + app.UseExceptionHandler("/Error", createScopeForErrors: true); + // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts. + app.UseHsts(); +} +app.UseStatusCodePagesWithReExecute("/not-found"); +app.UseHttpsRedirection(); + +app.UseAntiforgery(); + +app.MapStaticAssets(); +app.MapRazorComponents() + .AddInteractiveServerRenderMode(); + +app.Run(); diff --git a/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Properties/launchSettings.json b/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Properties/launchSettings.json new file mode 100644 index 00000000..1b5d5536 --- /dev/null +++ b/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Properties/launchSettings.json @@ -0,0 +1,23 @@ +{ + "$schema": "https://json.schemastore.org/launchsettings.json", + "profiles": { + "http": { + "commandName": "Project", + "dotnetRunMessages": true, + "launchBrowser": true, + "applicationUrl": "http://localhost:5131", + "environmentVariables": { + "ASPNETCORE_ENVIRONMENT": "Development" + } + }, + "https": { + "commandName": "Project", + "dotnetRunMessages": true, + "launchBrowser": true, + "applicationUrl": "https://localhost:7091;http://localhost:5131", + "environmentVariables": { + "ASPNETCORE_ENVIRONMENT": "Development" + } + } + } + } diff --git a/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/appsettings.Development.json b/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/appsettings.Development.json new file mode 100644 index 00000000..0c208ae9 --- /dev/null +++ b/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/appsettings.Development.json @@ -0,0 +1,8 @@ +{ + "Logging": { + "LogLevel": { + "Default": "Information", + "Microsoft.AspNetCore": "Warning" + } + } +} diff --git a/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/appsettings.json b/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/appsettings.json new file mode 100644 index 00000000..10f68b8c --- /dev/null +++ b/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/appsettings.json @@ -0,0 +1,9 @@ +{ + "Logging": { + "LogLevel": { + "Default": "Information", + "Microsoft.AspNetCore": "Warning" + } + }, + "AllowedHosts": "*" +} diff --git a/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/wwwroot/app.css b/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/wwwroot/app.css new file mode 100644 index 00000000..73a69d6f --- /dev/null +++ b/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/wwwroot/app.css @@ -0,0 +1,60 @@ +html, body { + font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; +} + +a, .btn-link { + color: #006bb7; +} + +.btn-primary { + color: #fff; + background-color: #1b6ec2; + border-color: #1861ac; +} + +.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus { + box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb; +} + +.content { + padding-top: 1.1rem; +} + +h1:focus { + outline: none; +} + +.valid.modified:not([type=checkbox]) { + outline: 1px solid #26b050; +} + +.invalid { + outline: 1px solid #e50000; +} + +.validation-message { + color: #e50000; +} + +.blazor-error-boundary { + background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121; + padding: 1rem 1rem 1rem 3.7rem; + color: white; +} + + .blazor-error-boundary::after { + content: "An error has occurred." + } + +.darker-border-checkbox.form-check-input { + border-color: #929292; +} + +.form-floating > .form-control-plaintext::placeholder, .form-floating > .form-control::placeholder { + color: var(--bs-secondary-color); + text-align: end; +} + +.form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder { + text-align: start; +} \ No newline at end of file From de8a14aadb33667c5cd3897e521d4319c3ebc3f6 Mon Sep 17 00:00:00 2001 From: Ramya Date: Fri, 14 Aug 2026 12:15:27 +0530 Subject: [PATCH 2/4] 1042035: Updated Additional Info --- .../Components/Pages/Home.razor | 76 +++++++++++++------ 1 file changed, 52 insertions(+), 24 deletions(-) diff --git a/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Components/Pages/Home.razor b/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Components/Pages/Home.razor index 9199e085..52e586ac 100644 --- a/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Components/Pages/Home.razor +++ b/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Components/Pages/Home.razor @@ -12,10 +12,13 @@ -
- @if (!string.IsNullOrEmpty(context.Content)) +
+ @{ + string? content = context.AdditionalInfo["Content"]?.ToString(); + } + @if (!string.IsNullOrEmpty(content)) { - @((MarkupString)context.Content) +
@content
}
@@ -23,17 +26,13 @@ @code { @@ -58,10 +57,14 @@ { // To prevent property change entry isAnnotationTemplate = true; - diagram.Nodes[0].Annotations[0].Content = node.Annotations?[0].Content; + + // Restore AdditionalInfo from the undo snapshot (stored on the annotation) + diagram.Nodes?[0].Annotations?[0].AdditionalInfo = new Dictionary(node.Annotations?[0].AdditionalInfo); + isAnnotationTemplate = false; } } + // This methods enable you to implement custom logic for redo private void onCustomRedo(HistoryEntryBase entry) { @@ -69,7 +72,10 @@ { // To prevent property change entry isAnnotationTemplate = true; - diagram.Nodes[0].Annotations[0].Content = node.Annotations?[0].Content; + + // Restore AdditionalInfo from the redo snapshot (stored on the annotation) + diagram.Nodes?[0].Annotations?[0].AdditionalInfo = new Dictionary(node.Annotations?[0].AdditionalInfo); + isAnnotationTemplate = false; } } @@ -82,16 +88,28 @@ private void InitializedDiagram() { nodes = new DiagramObjectCollection(); + + Dictionary annotationInfo = new Dictionary + { + { "Content", "Annotation" }, + }; + Node node = new Node() { ID = "node", - Width = 100, - Height = 100, - OffsetX = 100, - OffsetY = 100, + Width = 150, + Height = 120, + OffsetX = 200, + OffsetY = 200, Annotations = new DiagramObjectCollection() { - new ShapeAnnotation { Content = "

Node

", UseTemplate = true, Width = 100, Height = 100 } + new ShapeAnnotation + { + UseTemplate = true, + Width = 150, + Height = 120, + AdditionalInfo = annotationInfo + } }, Style = new ShapeStyle() { @@ -100,36 +118,46 @@ }, }; nodes.Add(node); - } - private async void UpdateAnnotation(string annotationContent) + + private async void UpdateAnnotation(string content) { diagram.BeginUpdate(); HistoryEntry entry = new HistoryEntry(); + // Capture the current state (before changes) as the undo snapshot (entry.UndoObject) = diagram.Nodes?[0].Clone() as Node; + entry.Type = HistoryEntryType.Undo; // To prevent property change entry isAnnotationTemplate = true; - diagram.Nodes[0].Annotations[0].Content = annotationContent; + + // Update AdditionalInfo on the annotation so context.AdditionalInfo reflects it in the template + diagram.Nodes?[0].Annotations?[0].AdditionalInfo = new Dictionary + { + { "Content", content }, + }; + isAnnotationTemplate = false; + // Capture the updated state as the redo snapshot (entry.RedoObject) = diagram.Nodes?[0].Clone() as Node; diagram.AddHistoryEntry(entry); await diagram.EndUpdateAsync(); } + private void UpdateAnnotation1() { - UpdateAnnotation("Updated Annotation 1"); + UpdateAnnotation("Updated Annotation 1"); } private void UpdateAnnotation2() { - UpdateAnnotation("Updated Annotation 2"); + UpdateAnnotation("Updated Annotation 2"); } } From 1340a32533ca5037a6761974b6bc00c765a691d3 Mon Sep 17 00:00:00 2001 From: Ramya Date: Fri, 14 Aug 2026 12:20:54 +0530 Subject: [PATCH 3/4] 1042035:Comments updated --- .../AnnotationTemplateUndoRedo/Components/Pages/Home.razor | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Components/Pages/Home.razor b/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Components/Pages/Home.razor index 52e586ac..37d579ba 100644 --- a/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Components/Pages/Home.razor +++ b/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Components/Pages/Home.razor @@ -46,7 +46,9 @@ { if (isAnnotationTemplate) { - entry.Cancel = true; // To cancel diagram's undo/redo action. + // The flag is true during a programmatic AdditionalInfo update. + // Cancel the diagram's automatic history entry to prevent duplicates. + entry.Cancel = true; } } From ced8e34f20c507d34b2c828df94c19e28ec4a78a Mon Sep 17 00:00:00 2001 From: Ramya Date: Wed, 19 Aug 2026 12:45:05 +0530 Subject: [PATCH 4/4] 1042035: Updated Changes --- .../Components/Pages/Home.razor | 21 ++++++++++--------- 1 file changed, 11 insertions(+), 10 deletions(-) diff --git a/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Components/Pages/Home.razor b/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Components/Pages/Home.razor index 37d579ba..3981552e 100644 --- a/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Components/Pages/Home.razor +++ b/KB-Samples/AnnotationTemplateUndoRedo/AnnotationTemplateUndoRedo/Components/Pages/Home.razor @@ -2,6 +2,7 @@ @using Syncfusion.Blazor.Diagram @using Syncfusion.Blazor.Buttons +@using System.Threading.Tasks @@ -9,7 +10,7 @@ - +
@@ -52,8 +53,8 @@ } } - // This methods enable you to implement custom logic for undo - private void onCustomUndo(HistoryEntryBase entry) + // Called when the user performs an Undo action. + private void OnCustomUndo(HistoryEntryBase entry) { if (entry.UndoObject != null && entry.UndoObject is Node node) { @@ -67,8 +68,8 @@ } } - // This methods enable you to implement custom logic for redo - private void onCustomRedo(HistoryEntryBase entry) + // Called when the user performs an Redo action. + private void OnCustomRedo(HistoryEntryBase entry) { if (entry.RedoObject != null && entry.RedoObject is Node node) { @@ -84,10 +85,10 @@ protected override void OnInitialized() { - InitializedDiagram(); + InitializeDiagram(); } - private void InitializedDiagram() + private void InitializeDiagram() { nodes = new DiagramObjectCollection(); @@ -122,7 +123,7 @@ nodes.Add(node); } - private async void UpdateAnnotation(string content) + private async Task UpdateAnnotationAsync(string content) { diagram.BeginUpdate(); @@ -154,12 +155,12 @@ private void UpdateAnnotation1() { - UpdateAnnotation("Updated Annotation 1"); + _ = UpdateAnnotationAsync("Updated Annotation 1"); } private void UpdateAnnotation2() { - UpdateAnnotation("Updated Annotation 2"); + _ = UpdateAnnotationAsync("Updated Annotation 2"); } }