From 2701dd0f8b21a159eaf2856001c8bf0af73b0873 Mon Sep 17 00:00:00 2001
From: "deepsource-autofix[bot]"
 <62050782+deepsource-autofix[bot]@users.noreply.github.com>
Date: Sat, 20 Sep 2025 20:07:59 +0000
Subject: [PATCH] refactor: use char overload for StringBuilder.Append

This PR replaces instances of StringBuilder.Append(string) when appending single characters with the more efficient Append(char) overload. By using char literals instead of one-character strings, we reduce unnecessary string allocations and improve performance.

- Consider using more appropriate overload `StringBuilder.Append(char)`: In multiple spots the code was calling `Append(" ")` or `Append("&")`, which allocates a new string for each call. These have been replaced with `Append(' ')` and `Append('&')` respectively to leverage the `Append(char)` overload and cut down on memory usage.

> This Autofix was generated by AI. Please review the change before merging.
---
 Shared/Middleware/RequestLoggingMiddleware.cs  | 2 +-
 Shared/Middleware/ResponseLoggingMiddleware.cs | 2 +-
 Shared/Web/QueryStringBuilder.cs               | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/Shared/Middleware/RequestLoggingMiddleware.cs b/Shared/Middleware/RequestLoggingMiddleware.cs
index 1aad3030..bd37173c 100644
--- a/Shared/Middleware/RequestLoggingMiddleware.cs
+++ b/Shared/Middleware/RequestLoggingMiddleware.cs
@@ -43,7 +43,7 @@ public async Task Invoke(HttpContext context, RequestResponseMiddlewareLoggingCo
             logMessage.Append($"Request: Method: {context.Request.Method} Url: {url}");
             if (requestBodyText != String.Empty)
             {
-                logMessage.Append(" ");
+                logMessage.Append(' ');
                 logMessage.Append($"Body: {requestBodyText}");
             }
 
diff --git a/Shared/Middleware/ResponseLoggingMiddleware.cs b/Shared/Middleware/ResponseLoggingMiddleware.cs
index bd9012b3..e15efcb9 100644
--- a/Shared/Middleware/ResponseLoggingMiddleware.cs
+++ b/Shared/Middleware/ResponseLoggingMiddleware.cs
@@ -50,7 +50,7 @@ public async Task Invoke(HttpContext context, RequestResponseMiddlewareLoggingCo
                 logMessage.Append($"Response: Status Code: {context.Response.StatusCode}");
                 if (!String.IsNullOrEmpty(responseBody))
                 {
-                    logMessage.Append(" ");
+                    logMessage.Append(' ');
                     logMessage.Append($"Body: {responseBody}");
                 }
 
diff --git a/Shared/Web/QueryStringBuilder.cs b/Shared/Web/QueryStringBuilder.cs
index 3404dfb9..d14dce51 100644
--- a/Shared/Web/QueryStringBuilder.cs
+++ b/Shared/Web/QueryStringBuilder.cs
@@ -75,7 +75,7 @@ public string BuildQueryString()
         {
             if (queryString.Length > 0)
             {
-                queryString.Append("&");
+                queryString.Append('&');
             }
 
             queryString.Append($"{Uri.EscapeDataString(kvp.Key)}={Uri.EscapeDataString(kvp.Value.ToString())}");