diff --git a/src/Z.Core/System.String/String.EqualsIgnoreCase.cs b/src/Z.Core/System.String/String.EqualsIgnoreCase.cs
new file mode 100644
index 00000000..f9ada8e6
--- /dev/null
+++ b/src/Z.Core/System.String/String.EqualsIgnoreCase.cs
@@ -0,0 +1,23 @@
+// Description: C# Extension Methods Library to enhances the .NET Framework by adding hundreds of new methods. It drastically increases developers productivity and code readability. Support C# and VB.NET
+// Website & Documentation: https://github.com/zzzprojects/Z.ExtensionMethods
+// Forum: https://github.com/zzzprojects/Z.ExtensionMethods/issues
+// License: https://github.com/zzzprojects/Z.ExtensionMethods/blob/master/LICENSE
+// More projects: http://www.zzzprojects.com/
+// Copyright © ZZZ Projects Inc. 2014 - 2016. All rights reserved.
+using System;
+
+public static partial class Extensions
+{
+    /// <summary>
+    /// A string extension method that checks if '@this' is equal to another string regardless of it's case.
+    /// </summary>
+    /// <param name="this">The @this to act on.</param>
+    /// <param name="comparedString">The compared string.</param>
+    /// <returns>
+    /// true if it contains all values, otherwise false.
+    /// </returns>
+    public static bool EqualsIgnoreCase(this string @this, string comparedString)
+    {
+        return @this.Equals(comparedString, StringComparison.OrdinalIgnoreCase);
+    }
+}
\ No newline at end of file
diff --git a/src/Z.Core/Z.Core.csproj b/src/Z.Core/Z.Core.csproj
index a83b04d9..84c5b4dd 100644
--- a/src/Z.Core/Z.Core.csproj
+++ b/src/Z.Core/Z.Core.csproj
@@ -508,6 +508,7 @@
     <Compile Include="System.Single\_CoreObject\Single.In.cs" />
     <Compile Include="System.Single\_CoreObject\Single.InRange.cs" />
     <Compile Include="System.Single\_CoreObject\Single.NotIn.cs" />
+    <Compile Include="System.String\String.EqualsIgnoreCase.cs" />
     <Compile Include="System.String\String.ToValidDateTimeOrNull.cs" />
     <Compile Include="System.String\String.Br2Nl.cs" />
     <Compile Include="System.String\String.IsPalindrome.cs" />
diff --git a/test/Z.Core.Test/System.String/String.EqualsIgnoreCase.cs b/test/Z.Core.Test/System.String/String.EqualsIgnoreCase.cs
new file mode 100644
index 00000000..f1babd86
--- /dev/null
+++ b/test/Z.Core.Test/System.String/String.EqualsIgnoreCase.cs
@@ -0,0 +1,29 @@
+// Description: C# Extension Methods Library to enhances the .NET Framework by adding hundreds of new methods. It drastically increases developers productivity and code readability. Support C# and VB.NET
+// Website & Documentation: https://github.com/zzzprojects/Z.ExtensionMethods
+// Forum: https://github.com/zzzprojects/Z.ExtensionMethods/issues
+// License: https://github.com/zzzprojects/Z.ExtensionMethods/blob/master/LICENSE
+// More projects: http://www.zzzprojects.com/
+// Copyright © ZZZ Projects Inc. 2014 - 2016. All rights reserved.
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace Z.Core.Test
+{
+    [TestClass]
+    public class System_String_EqualsIgnoreCase
+    {
+        [TestMethod]
+        public void EqualsIgnoreCase()
+        {
+            // Type
+            string @this = "FizBuzz";
+
+            // Examples
+            bool value1 = @this.EqualsIgnoreCase("fizbuzz"); // return true;
+            bool value2 = @this.EqualsIgnoreCase("FooBar"); // return false;
+
+            // Unit Test
+            Assert.IsTrue(value1);
+            Assert.IsFalse(value2);
+        }
+    }
+}
\ No newline at end of file
diff --git a/test/Z.Core.Test/Z.Core.Test.csproj b/test/Z.Core.Test/Z.Core.Test.csproj
index db9cc519..be0eabfe 100644
--- a/test/Z.Core.Test/Z.Core.Test.csproj
+++ b/test/Z.Core.Test/Z.Core.Test.csproj
@@ -62,6 +62,7 @@
   <ItemGroup>
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="System.Object\Object.Try.cs" />
+    <Compile Include="System.String\String.EqualsIgnoreCase.cs" />
     <Compile Include="System.String\String.IsValidEmail.cs" />
     <Compile Include="System.String\String.IsPalindrome.cs" />
     <Compile Include="System.String\String.IsAnagram.cs" />