Add a Details Pane reader view with decoded fields and severity

src/EventLogExpert.Eventing/Common/Events/EventFieldValue.cs

@@ -108,6 +108,20 @@ public bool TryGetGuid(out Guid value)
         return false;
     }
 
+    public bool TryGetBytes([NotNullWhen(true)] out byte[]? value)
+    {
+        if (_kind == EventFieldValueKind.Bytes && _reference is byte[] bytes)
+        {
+            value = bytes;
+
+            return true;
+        }
+
+        value = null;
+
+        return false;
+    }
+
     public bool TryGetStringArray([NotNullWhen(true)] out string[]? values)
     {
         if (_kind == EventFieldValueKind.StringArray && _reference is string[] array)
@@ -122,6 +136,20 @@ public bool TryGetStringArray([NotNullWhen(true)] out string[]? values)
         return false;
     }
 
+    public bool TryGetArray([NotNullWhen(true)] out Array? value)
+    {
+        if (_kind == EventFieldValueKind.Array && _reference is Array array)
+        {
+            value = array;
+
+            return true;
+        }
+
+        value = null;
+
+        return false;
+    }
+
     public string AsString() => _kind switch
     {
         EventFieldValueKind.String => _reference as string ?? string.Empty,

src/EventLogExpert.Eventing/Common/Events/LevelSeverity.cs

@@ -0,0 +1,17 @@
+// // Copyright (c) Microsoft Corporation.
+// // Licensed under the MIT License.
+
+namespace EventLogExpert.Eventing.Common.Events;
+
+public static class LevelSeverity
+{
+    public static SeverityLevel? FromLevelName(string? level) => level switch
+    {
+        nameof(SeverityLevel.Critical) => SeverityLevel.Critical,
+        nameof(SeverityLevel.Error) => SeverityLevel.Error,
+        nameof(SeverityLevel.Warning) => SeverityLevel.Warning,
+        nameof(SeverityLevel.Information) => SeverityLevel.Information,
+        nameof(SeverityLevel.Verbose) => SeverityLevel.Verbose,
+        _ => null
+    };
+}

src/EventLogExpert.Runtime/DetailsPane/DetailsField.cs

@@ -0,0 +1,27 @@
+// // Copyright (c) Microsoft Corporation.
+// // Licensed under the MIT License.
+
+namespace EventLogExpert.Runtime.DetailsPane;
+
+public sealed record DetailsField
+{
+    public required string Label { get; init; }
+
+    public required IReadOnlyList<string> PreviewLines { get; init; }
+
+    public required IReadOnlyList<string> FullLines { get; init; }
+
+    public required string CopyValue { get; init; }
+
+    public bool IsTruncated { get; init; }
+
+    public bool IsMuted { get; init; }
+
+    public bool IsMonospace { get; init; }
+
+    public string? DecodedLabel { get; init; }
+
+    public string? Description { get; init; }
+
+    public bool PreferFullWidth => PreviewLines.Count > 1 || IsTruncated || Description is not null;
+}

src/EventLogExpert.Runtime/DetailsPane/DetailsProperty.cs

@@ -0,0 +1,7 @@
+// // Copyright (c) Microsoft Corporation.
+// // Licensed under the MIT License.
+
+namespace EventLogExpert.Runtime.DetailsPane;
+
+/// <summary>A single label / value row in the reader view's identity header or system-details section.</summary>
+public readonly record struct DetailsProperty(string Label, string Value);