Ready to test

Helpers/HelperILMerge.cs

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+using System.Diagnostics;
+using System.Text;
+
+namespace File_Folder_Helper.Helpers;
+
+internal static class HelperILMerge
+{
+
+    internal static void ILMerge(string workingDirectory)
+    {
+        bool result;
+        ProcessStartInfo processStartInfo;
+        StringBuilder stringBuilder = new();
+        string[] successChecks = new string[] { "success" };
+        string[] errorChecks = new string[] { "Error", "Conflict", "error:" };
+        string errorFile = Path.Combine(workingDirectory, string.Concat(Path.GetFileName(workingDirectory), ".err"));
+        string primaryFile = Path.Combine(workingDirectory, string.Concat(Path.GetFileName(workingDirectory), ".dll"));
+        string[] dllFiles = Directory.GetFiles(workingDirectory, "*.dll", SearchOption.TopDirectoryOnly);
+        FileInfo ilMerge = new(@"C:\Users\phares\AppData\Local\IFXApps\ILMerge\ILMerge.exe");
+        FileInfo fileInfo = new(Path.Combine(workingDirectory, ilMerge.Name));
+        if (!fileInfo.Exists)
+            _ = ilMerge.CopyTo(fileInfo.FullName);
+        if (fileInfo.Exists && ilMerge.LastWriteTime != fileInfo.LastWriteTime)
+            _ = ilMerge.CopyTo(fileInfo.FullName, overwrite: true);
+        _ = stringBuilder.Append("/allowDup /target:library /out:\"").Append(Path.GetFileNameWithoutExtension(primaryFile)).Append(".all.dll\" ");
+        foreach (string dllFile in dllFiles)
+        {
+            if (dllFile == primaryFile)
+                continue;
+            _ = stringBuilder.Append('"').Append(Path.GetFileName(dllFile)).Append("\" ");
+        }
+        processStartInfo = new ProcessStartInfo(fileInfo.FullName, stringBuilder.ToString())
+        {
+            UseShellExecute = false,
+            RedirectStandardError = true,
+            RedirectStandardOutput = true,
+            WorkingDirectory = workingDirectory,
+        };
+        result = HelperStart.Start(errorChecks, successChecks, processStartInfo, errorFile);
+        if (result)
+        { }
+    }
+
+}