876067: Drag and Drop sample

KB-Samples/DragDrop/App.razor

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+<Router AppAssembly="@typeof(App).Assembly">
+    <Found Context="routeData">
+        <RouteView RouteData="@routeData" DefaultLayout="@typeof(MainLayout)" />
+        <FocusOnNavigate RouteData="@routeData" Selector="h1" />
+    </Found>
+    <NotFound>
+        <PageTitle>Not found</PageTitle>
+        <LayoutView Layout="@typeof(MainLayout)">
+            <p role="alert">Sorry, there's nothing at this address.</p>
+        </LayoutView>
+    </NotFound>
+</Router>
+

KB-Samples/DragDrop/DragDrop.csproj

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+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Syncfusion.Blazor.Diagram" Version="*" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Folder Include="wwwroot\" />
+  </ItemGroup>
+
+</Project>

KB-Samples/DragDrop/DragDrop.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.4.33122.133
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "DragDrop", "DragDrop.csproj", "{BD607AD5-F5CD-4426-B6CF-BCF6EE5E38A5}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{BD607AD5-F5CD-4426-B6CF-BCF6EE5E38A5}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{BD607AD5-F5CD-4426-B6CF-BCF6EE5E38A5}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{BD607AD5-F5CD-4426-B6CF-BCF6EE5E38A5}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{BD607AD5-F5CD-4426-B6CF-BCF6EE5E38A5}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {E54284AF-9797-4860-9EED-6ECF085DCDBF}
+	EndGlobalSection
+EndGlobal

KB-Samples/DragDrop/Pages/Index.razor

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+@page "/"
+
+@using Syncfusion.Blazor.Diagram
+
+<SfDiagramComponent Height="1000px" @ref="diagram" NodeCreating="@OnNodeCreating" ConnectorCreating="@OnConnectorCreating" DragDrop="OnDrop">
+    <DataSourceSettings ID="Id" ParentID="Team" DataSource="@DataSource"></DataSourceSettings>
+    <SnapSettings>
+        <HorizontalGridLines LineColor="white" LineDashArray="2,2">
+        </HorizontalGridLines>
+        <VerticalGridLines LineColor="white" LineDashArray="2,2">
+        </VerticalGridLines>
+    </SnapSettings>
+    <Layout Type="LayoutType.OrganizationalChart" @bind-HorizontalSpacing="@HorizontalSpacing" @bind-VerticalSpacing="@VerticalSpacing">
+    </Layout>
+</SfDiagramComponent>
+
+@code
+{
+    //Initializing layout.
+    int HorizontalSpacing = 40;
+    int VerticalSpacing = 50;
+    SfDiagramComponent diagram;
+    LayoutOrientation oreintation = LayoutOrientation.LeftToRight;
+    //Creates node with some default values.
+    private void OnNodeCreating(IDiagramObject obj)
+    {
+        Node node = obj as Node;
+        node.Height = 50;
+        node.Width = 150;
+        node.Annotations = new DiagramObjectCollection<ShapeAnnotation>()
+        {
+            new ShapeAnnotation()
+            {
+                Content=(node.Data as OrgChartDataModel).Role,
+            }
+        };
+        node.Style = new ShapeStyle() { Fill = "#6495ED", StrokeWidth = 1, StrokeColor = "Black" };
+        node.Constraints = NodeConstraints.Default | NodeConstraints.AllowDrop;
+    }
+
+    private void OnDrop(DropEventArgs args)
+    {
+        if (args.Element is DiagramSelectionSettings && args.Target is Node)
+        {
+            Node draggingNode = (args.Element as DiagramSelectionSettings).Nodes[0] as Node;
+            Node targetNode = args.Target as Node;
+            Connector connector = new Connector()
+                {
+                    SourceID = targetNode.ID,
+                    TargetID = draggingNode.ID,
+                };
+            diagram.Connectors.Add(connector);
+            diagram.DoLayout();
+        }
+    }
+
+    //Creates connectors with some default values.
+    private void OnConnectorCreating(IDiagramObject connector)
+    {
+        Connector connectors = connector as Connector;
+        connectors.Type = ConnectorSegmentType.Orthogonal;
+        connectors.Style = new TextStyle() { StrokeColor = "#6495ED", StrokeWidth = 1 };
+        connectors.TargetDecorator = new DecoratorSettings
+            {
+                Shape = DecoratorShape.None,
+                Style = new ShapeStyle() { Fill = "#6495ED", StrokeColor = "#6495ED", }
+            };
+    }
+
+    public class OrgChartDataModel
+    {
+        public string Id { get; set; }
+        public string Team { get; set; }
+        public string Role { get; set; }
+    }
+    public object DataSource = new List<object>()
+    {
+        new OrgChartDataModel() { Id= "1", Role= "General Manager" },
+        new OrgChartDataModel() { Id= "2", Role= "Human Resource Manager" },
+        new OrgChartDataModel() { Id= "3", Role= "Design Manager"},
+        new OrgChartDataModel() { Id= "4", Role= "Operation Manager" },
+        new OrgChartDataModel() { Id= "5", Role= "Marketing Manager" },
+        new OrgChartDataModel() { Id= "6", Role= "Team Member" },
+    };
+}

KB-Samples/DragDrop/Pages/_Host.cshtml

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+@page "/"
+@namespace DragDrop.Pages
+@addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers
+@{
+    Layout = "_Layout";
+}
+
+<component type="typeof(App)" render-mode="ServerPrerendered" />

KB-Samples/DragDrop/Pages/_Layout.cshtml

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+@using Microsoft.AspNetCore.Components.Web
+@namespace DragDrop.Pages
+@addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers
+
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <base href="~/" />
+    <link rel="stylesheet" href="css/bootstrap/bootstrap.min.css" />
+    <link href="css/site.css" rel="stylesheet" />
+     <script src="_content/Syncfusion.Blazor.Core/scripts/syncfusion-blazor.min.js" type="text/javascript"></script>
+    <link href="DragDrop.styles.css" rel="stylesheet" />
+    <component type="typeof(HeadOutlet)" render-mode="ServerPrerendered" />
+</head>
+<body>
+    @RenderBody()
+
+
+
+    <script src="_framework/blazor.server.js"></script>
+</body>
+</html>

KB-Samples/DragDrop/Program.cs

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+
+using Microsoft.AspNetCore.Components;
+using Microsoft.AspNetCore.Components.Web;
+using Syncfusion.Blazor;
+
+var builder = WebApplication.CreateBuilder(args);
+
+// Add services to the container.
+builder.Services.AddRazorPages();
+builder.Services.AddServerSideBlazor();
+builder.Services.AddSyncfusionBlazor();
+
+var app = builder.Build();
+
+// Configure the HTTP request pipeline.
+if (!app.Environment.IsDevelopment())
+{
+    app.UseExceptionHandler("/Error");
+    // 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.UseHttpsRedirection();
+
+app.UseStaticFiles();
+
+app.UseRouting();
+
+app.MapBlazorHub();
+app.MapFallbackToPage("/_Host");
+
+app.Run();

KB-Samples/DragDrop/Properties/launchSettings.json

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+{
+  "iisSettings": {
+    "windowsAuthentication": false,
+    "anonymousAuthentication": true,
+    "iisExpress": {
+      "applicationUrl": "http://localhost:11920",
+      "sslPort": 44341
+    }
+  },
+  "profiles": {
+    "DragDrop": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": true,
+      "applicationUrl": "https://localhost:7204;http://localhost:5236",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "IIS Express": {
+      "commandName": "IISExpress",
+      "launchBrowser": true,
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    }
+  }
+}

KB-Samples/DragDrop/Shared/MainLayout.razor

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+@inherits LayoutComponentBase
+
+<PageTitle>DragDrop</PageTitle>
+
+<div class="page">
+    <div class="sidebar">
+        <NavMenu />
+    </div>
+
+
+    <main>
+
+        <article class="content px-4">
+            @Body
+        </article>
+    </main>
+</div>

KB-Samples/DragDrop/Shared/MainLayout.razor.css

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+.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 .btn-link {
+        white-space: nowrap;
+        margin-left: 1.5rem;
+    }
+
+    .top-row a:first-child {
+        overflow: hidden;
+        text-overflow: ellipsis;
+    }
+
+@media (max-width: 640.98px) {
+    .top-row:not(.auth) {
+        display: none;
+    }
+
+    .top-row.auth {
+        justify-content: space-between;
+    }
+
+    .top-row a, .top-row .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, article {
+        padding-left: 2rem !important;
+        padding-right: 1.5rem !important;
+    }
+}

KB-Samples/DragDrop/_Imports.razor

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+@using System.Net.Http
+@using Microsoft.AspNetCore.Authorization
+@using Microsoft.AspNetCore.Components.Authorization
+@using Microsoft.AspNetCore.Components.Forms
+@using Microsoft.AspNetCore.Components.Routing
+@using Microsoft.AspNetCore.Components.Web
+@using Microsoft.AspNetCore.Components.Web.Virtualization
+@using Microsoft.JSInterop
+@using DragDrop
+@using DragDrop.Shared

KB-Samples/DragDrop/appsettings.Development.json

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+{
+  "DetailedErrors": true,
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  }
+}

KB-Samples/DragDrop/appsettings.json

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+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  },
+  "AllowedHosts": "*"
+}