diff --git a/binding/csharp/IP2Region.Net.BenchMark/Program.cs b/binding/csharp/IP2Region.Net.BenchMark/Program.cs
index 8cccb07..9f7d0b0 100644
--- a/binding/csharp/IP2Region.Net.BenchMark/Program.cs
+++ b/binding/csharp/IP2Region.Net.BenchMark/Program.cs
@@ -1,6 +1,5 @@
-using BenchmarkDotNet.Attributes;
+using BenchmarkDotNet.Attributes;
 using BenchmarkDotNet.Running;
-using IP2Region.Net.Abstractions;
 using IP2Region.Net.XDB;
 
 BenchmarkRunner.Run(typeof(Program).Assembly);
@@ -9,16 +8,26 @@ public class CachePolicyCompare
 {
     private static readonly string XdbPathV4 = Path.Combine(AppContext.BaseDirectory, "IP2Region", "ip2region_v4.xdb");
     private static readonly string XdbPathV6 = Path.Combine(AppContext.BaseDirectory, "IP2Region", "ip2region_v6.xdb");
-    private readonly ISearcher _contentV4Searcher = new Searcher(CachePolicy.Content, XdbPathV4);
-    private readonly ISearcher _vectorV4Searcher = new Searcher(CachePolicy.VectorIndex, XdbPathV4);
-    private readonly ISearcher _fileV4Searcher = new Searcher(CachePolicy.File, XdbPathV4);
-    private readonly ISearcher _contentV6Searcher = new Searcher(CachePolicy.Content, XdbPathV6);
-    private readonly ISearcher _vectorV6Searcher = new Searcher(CachePolicy.VectorIndex, XdbPathV6);
-    private readonly ISearcher _fileV6Searcher = new Searcher(CachePolicy.File, XdbPathV6);
+    private readonly Searcher _contentV4Searcher = new Searcher(CachePolicy.Content, XdbPathV4);
+    private readonly Searcher _vectorV4Searcher = new Searcher(CachePolicy.VectorIndex, XdbPathV4);
+    private readonly Searcher _fileV4Searcher = new Searcher(CachePolicy.File, XdbPathV4);
+    private readonly Searcher _contentV6Searcher = new Searcher(CachePolicy.Content, XdbPathV6);
+    private readonly Searcher _vectorV6Searcher = new Searcher(CachePolicy.VectorIndex, XdbPathV6);
+    private readonly Searcher _fileV6Searcher = new Searcher(CachePolicy.File, XdbPathV6);
 
     private readonly string _testIpV4Address = "114.114.114.114";
     private readonly string _testIpV6Address = "240e:3b7:3272:d8d0:db09:c067:8d59:539e";
 
+    public CachePolicyCompare()
+    {
+        _contentV4Searcher.Search(_testIpV4Address);
+        _vectorV4Searcher.Search(_testIpV4Address);
+        _fileV4Searcher.Search(_testIpV4Address);
+        _contentV6Searcher.Search(_testIpV6Address);
+        _vectorV6Searcher.Search(_testIpV6Address);
+        _fileV6Searcher.Search(_testIpV6Address);
+    }
+
     [Benchmark]
     [BenchmarkCategory(nameof(CachePolicy.Content))]
     public void ContentIpV4() => _contentV4Searcher.Search(_testIpV4Address);
@@ -44,4 +53,4 @@ public class CachePolicyCompare
     [Benchmark]
     [BenchmarkCategory(nameof(CachePolicy.File))]
     public void FileIpV6() => _fileV6Searcher.Search(_testIpV6Address);
-}
\ No newline at end of file
+}