Fixed project file encoding to retain existing encoding.

framework/src/Volo.Abp.Cli.Core/Volo/Abp/Cli/ProjectModification/SolutionFileModifier.cs

@@ -12,11 +12,24 @@ public class SolutionFileModifier : ITransientDependency
 {
     public async Task RemoveProjectFromSolutionFileAsync(string solutionFile, string projectName)
     {
-        var solutionFileContent = File.ReadAllText(solutionFile);
-        solutionFileContent.NormalizeLineEndings();
-        var lines = solutionFileContent.Split(new[] { Environment.NewLine, "\n" }, StringSplitOptions.None);
-        File.WriteAllText(solutionFile,
-            RemoveProject(lines.ToList(), projectName).JoinAsString(Environment.NewLine));
+        using (var fs = File.Open(solutionFile, FileMode.Open, FileAccess.ReadWrite, FileShare.None))
+        using (var sr = new StreamReader(fs, Encoding.Default, true))
+        {
+            var solutionFileContent = await sr.ReadToEndAsync();
+            solutionFileContent.NormalizeLineEndings();
+
+            var lines = solutionFileContent.Split(new[] { Environment.NewLine, "\n" }, StringSplitOptions.None);
+            var updatedContent = RemoveProject(lines.ToList(), projectName).JoinAsString(Environment.NewLine);
+
+            fs.Seek(0, SeekOrigin.Begin);
+            fs.SetLength(0);
+
+            using (var sw = new StreamWriter(fs, sr.CurrentEncoding))
+            {
+                sw.Write(updatedContent);
+                sw.Flush();
+            }
+        }
     }
 
     public async Task AddModuleToSolutionFileAsync(ModuleWithMastersInfo module, string solutionFile)
@@ -64,7 +77,7 @@ public class SolutionFileModifier : ITransientDependency
 
         lines.InsertAfter(l => l.Contains("GlobalSection") && l.Contains("NestedProjects"), newPreSolutionLine);
 
-        File.WriteAllText(solutionFile, string.Join(Environment.NewLine, lines));
+        File.WriteAllText(solutionFile, string.Join(Environment.NewLine, lines), Encoding.UTF8);
     }
 
     private List<string> RemoveProject(List<string> solutionFileLines, string projectName)
@@ -174,7 +187,7 @@ public class SolutionFileModifier : ITransientDependency
             lines.InsertAfter(l => l.Contains("GlobalSection") && l.Contains("NestedProjects"), newPreSolutionLine);
         }
 
-        File.WriteAllText(solutionFile, string.Join(Environment.NewLine, lines));
+        File.WriteAllText(solutionFile, string.Join(Environment.NewLine, lines), Encoding.UTF8);
 
         if (module.MasterModuleInfos != null)
         {
@@ -219,7 +232,7 @@ public class SolutionFileModifier : ITransientDependency
                 .Split(" ").Last();
         }
 
-        File.WriteAllText(solutionFile, string.Join(Environment.NewLine, lines));
+        File.WriteAllText(solutionFile, string.Join(Environment.NewLine, lines), Encoding.UTF8);
 
         return folderId;
     }

framework/src/Volo.Abp.Cli.Core/Volo/Abp/Cli/ProjectModification/VoloNugetPackagesVersionUpdater.cs

@@ -9,6 +9,7 @@ using Volo.Abp.Cli.NuGet;
 using Volo.Abp.DependencyInjection;
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Logging.Abstractions;
+using System.Text;
 
 namespace Volo.Abp.Cli.ProjectModification;
 
@@ -41,17 +42,28 @@ public class VoloNugetPackagesVersionUpdater : ITransientDependency
 
             async Task UpdateAsync(string filePath)
             {
-                var fileContent = File.ReadAllText(filePath);
-                var updatedContent = await UpdateVoloPackagesAsync(fileContent,
-                    includePreviews,
-                    includeReleaseCandidates,
-                    switchToStable,
-                    latestVersionFromNuget,
-                    latestReleaseCandidateVersionFromNuget,
-                    latestVersionFromMyGet,
-                    version);
-
-                File.WriteAllText(filePath, updatedContent);
+                using (var fs = File.Open(filePath, FileMode.Open, FileAccess.ReadWrite, FileShare.None))
+                using (var sr = new StreamReader(fs, Encoding.Default, true))
+                {
+                    var fileContent = await sr.ReadToEndAsync();
+
+                    var updatedContent = await UpdateVoloPackagesAsync(fileContent,
+                        includePreviews,
+                        includeReleaseCandidates,
+                        switchToStable,
+                        latestVersionFromNuget,
+                        latestReleaseCandidateVersionFromNuget,
+                        latestVersionFromMyGet,
+                        version);
+
+                    fs.Seek(0, SeekOrigin.Begin);
+                    fs.SetLength(0);
+                    using (var sw = new StreamWriter(fs, sr.CurrentEncoding))
+                    {
+                        sw.Write(updatedContent);
+                        sw.Flush();
+                    }
+                }
             }
 
             Task.WaitAll(projectPaths.Select(UpdateAsync).ToArray());
@@ -70,27 +82,50 @@ public class VoloNugetPackagesVersionUpdater : ITransientDependency
             var latestReleaseCandidateVersionFromNuget = await _nuGetService.GetLatestVersionOrNullAsync("Volo.Abp.Core", includeReleaseCandidates: true);
             var latestVersionFromMyGet = await GetLatestVersionFromMyGet("Volo.Abp.Core");
 
-            var fileContent = File.ReadAllText(projectPath);
+            using (var fs = File.Open(projectPath, FileMode.Open, FileAccess.ReadWrite, FileShare.None))
+            using (var sr = new StreamReader(fs, Encoding.Default, true))
+            {
+                var fileContent = await sr.ReadToEndAsync();
+
+                var updatedContent = await UpdateVoloPackagesAsync(fileContent,
+                    includeNightlyPreviews,
+                    includeReleaseCandidates,
+                    switchToStable,
+                    latestVersionFromNuget,
+                    latestReleaseCandidateVersionFromNuget,
+                    latestVersionFromMyGet,
+                    version);
 
-            var updatedContent = await UpdateVoloPackagesAsync(fileContent,
-                includeNightlyPreviews,
-                includeReleaseCandidates,
-                switchToStable,
-                latestVersionFromNuget,
-                latestReleaseCandidateVersionFromNuget,
-                latestVersionFromMyGet,
-                version);
+                fs.Seek(0, SeekOrigin.Begin);
+                fs.SetLength(0);
 
-            File.WriteAllText(projectPath, updatedContent);
+                using (var sw = new StreamWriter(fs, sr.CurrentEncoding))
+                {
+                    sw.Write(updatedContent);
+                    sw.Flush();
+                }
+            }
         }
     }
 
     protected virtual async Task UpdateInternalAsync(string projectPath, bool includeNightlyPreviews = false, bool includeReleaseCandidates = false, bool switchToStable = false)
     {
-        var fileContent = File.ReadAllText(projectPath);
-        var updatedContent = await UpdateVoloPackagesAsync(fileContent, includeNightlyPreviews, includeReleaseCandidates, switchToStable);
+        using (var fs = File.Open(projectPath, FileMode.Open, FileAccess.ReadWrite, FileShare.None))
+        using (var sr = new StreamReader(fs, Encoding.Default, true))
+        {
+            var fileContent = await sr.ReadToEndAsync();
+
+            var updatedContent = await UpdateVoloPackagesAsync(fileContent, includeNightlyPreviews, includeReleaseCandidates, switchToStable);
+
+            fs.Seek(0, SeekOrigin.Begin);
+            fs.SetLength(0);
 
-        File.WriteAllText(projectPath, updatedContent);
+            using (var sw = new StreamWriter(fs, sr.CurrentEncoding))
+            {
+                sw.Write(updatedContent);
+                sw.Flush();
+            }
+        }
     }
 
     protected virtual async Task<bool> SpecifiedVersionExists(string version, string packageId)