整理整理

AIStudio.Wpf.DiagramDesigner.Additionals/Helpers/NewNameHelper.cs

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+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Runtime.InteropServices;
+using System.Security;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AIStudio.Wpf.DiagramDesigner.Additionals
+{
+    public class NewNameHelper
+    {
+        public static string GetNewName(IEnumerable<string> names, string firstName = null)
+        {
+            string result = string.Empty;
+            int i = 1;
+            if (firstName == null)
+            {
+                firstName = "新建-";               
+            }
+            
+            result = firstName + i;            
+
+            while (names.Any(o => { return o == result; })) //存在同名则继续累加
+            {
+                result = firstName + ++i;
+            }
+
+            return result;
+        }
+
+        [SuppressUnmanagedCodeSecurity]
+        internal static class SafeNativeMethods
+        {
+            [DllImport("shlwapi.dll", CharSet = CharSet.Unicode)]
+            public static extern int StrCmpLogicalW(string psz1, string psz2);
+        }
+
+        public sealed class NaturalStringComparer : IComparer<string>
+        {
+            public int Compare(string a, string b)
+            {
+                return SafeNativeMethods.StrCmpLogicalW(a, b);
+            }
+        }
+
+        public sealed class NaturalFileInfoNameComparer : IComparer<FileInfo>
+        {
+            public int Compare(FileInfo a, FileInfo b)
+            {
+                return SafeNativeMethods.StrCmpLogicalW(a.Name, b.Name);
+            }
+        }
+    }
+}