diff --git a/.vs/c-sharp/v17/.suo b/.vs/c-sharp/v17/.suo
index 07d5efd..7d2e3dd 100644
Binary files a/.vs/c-sharp/v17/.suo and b/.vs/c-sharp/v17/.suo differ
diff --git a/.vs/c-sharp/v17/TestStore/0/000.testlog b/.vs/c-sharp/v17/TestStore/0/000.testlog
index c969730..d4a89d7 100644
Binary files a/.vs/c-sharp/v17/TestStore/0/000.testlog and b/.vs/c-sharp/v17/TestStore/0/000.testlog differ
diff --git a/Negyszog/Negyszog.cs b/Negyszog/Negyszog.cs
index b5f233e..60c3f09 100644
--- a/Negyszog/Negyszog.cs
+++ b/Negyszog/Negyszog.cs
@@ -7,11 +7,20 @@ using System.Threading.Tasks;
 namespace Negyszog {
     public class Negyszog {
         public double oldal { get; set; }
+        public double oszlop;
         
         public Negyszog(double oldal) {
             this.oldal = oldal;
         }
 
+        public void getOszlop(double oszlop) {
+            if(oszlop <= 0) {
+                throw new ArgumentException("A magasság negativ!");
+            } else {
+                this.oszlop = oszlop;
+            }
+        }
+
         public double Kerulet() {
             return 4.0 * oldal;
         }
diff --git a/Negyszog/bin/Debug/Negyszog.exe b/Negyszog/bin/Debug/Negyszog.exe
index ecb82db..bd29788 100644
Binary files a/Negyszog/bin/Debug/Negyszog.exe and b/Negyszog/bin/Debug/Negyszog.exe differ
diff --git a/Negyszog/bin/Debug/Negyszog.pdb b/Negyszog/bin/Debug/Negyszog.pdb
index 1670602..fee321c 100644
Binary files a/Negyszog/bin/Debug/Negyszog.pdb and b/Negyszog/bin/Debug/Negyszog.pdb differ
diff --git a/Negyszog/obj/Debug/Negyszog.exe b/Negyszog/obj/Debug/Negyszog.exe
index ecb82db..bd29788 100644
Binary files a/Negyszog/obj/Debug/Negyszog.exe and b/Negyszog/obj/Debug/Negyszog.exe differ
diff --git a/Negyszog/obj/Debug/Negyszog.pdb b/Negyszog/obj/Debug/Negyszog.pdb
index 1670602..fee321c 100644
Binary files a/Negyszog/obj/Debug/Negyszog.pdb and b/Negyszog/obj/Debug/Negyszog.pdb differ
diff --git a/NegyszogUnitTest/UnitTest1.cs b/NegyszogUnitTest/UnitTest1.cs
index e9c2531..9868fce 100644
--- a/NegyszogUnitTest/UnitTest1.cs
+++ b/NegyszogUnitTest/UnitTest1.cs
@@ -27,5 +27,12 @@ namespace NegyszogUnitTest {
             double kapotEredmeny = negyszog.Atlo();
             Assert.AreEqual(vartEredmeny, kapotEredmeny);
         }
+
+        [TestMethod, ExpectedException(typeof(ArgumentException))]
+        public void TestGetOszlop() {
+            double m = 1;
+            negyszog.getOszlop(m);
+            //Assert.Fail();
+        }
     }
 }
diff --git a/NegyszogUnitTest/bin/Debug/Negyszog.exe b/NegyszogUnitTest/bin/Debug/Negyszog.exe
index ecb82db..bd29788 100644
Binary files a/NegyszogUnitTest/bin/Debug/Negyszog.exe and b/NegyszogUnitTest/bin/Debug/Negyszog.exe differ
diff --git a/NegyszogUnitTest/bin/Debug/Negyszog.pdb b/NegyszogUnitTest/bin/Debug/Negyszog.pdb
index 1670602..fee321c 100644
Binary files a/NegyszogUnitTest/bin/Debug/Negyszog.pdb and b/NegyszogUnitTest/bin/Debug/Negyszog.pdb differ
diff --git a/NegyszogUnitTest/bin/Debug/NegyszogUnitTest.dll b/NegyszogUnitTest/bin/Debug/NegyszogUnitTest.dll
index 36963b8..db9b855 100644
Binary files a/NegyszogUnitTest/bin/Debug/NegyszogUnitTest.dll and b/NegyszogUnitTest/bin/Debug/NegyszogUnitTest.dll differ
diff --git a/NegyszogUnitTest/bin/Debug/NegyszogUnitTest.pdb b/NegyszogUnitTest/bin/Debug/NegyszogUnitTest.pdb
index 4f47c03..52eb6ee 100644
Binary files a/NegyszogUnitTest/bin/Debug/NegyszogUnitTest.pdb and b/NegyszogUnitTest/bin/Debug/NegyszogUnitTest.pdb differ
diff --git a/NegyszogUnitTest/obj/Debug/NegyszogUnitTest.csproj.AssemblyReference.cache b/NegyszogUnitTest/obj/Debug/NegyszogUnitTest.csproj.AssemblyReference.cache
index d6092c5..23fed3d 100644
Binary files a/NegyszogUnitTest/obj/Debug/NegyszogUnitTest.csproj.AssemblyReference.cache and b/NegyszogUnitTest/obj/Debug/NegyszogUnitTest.csproj.AssemblyReference.cache differ
diff --git a/NegyszogUnitTest/obj/Debug/NegyszogUnitTest.dll b/NegyszogUnitTest/obj/Debug/NegyszogUnitTest.dll
index 36963b8..db9b855 100644
Binary files a/NegyszogUnitTest/obj/Debug/NegyszogUnitTest.dll and b/NegyszogUnitTest/obj/Debug/NegyszogUnitTest.dll differ
diff --git a/NegyszogUnitTest/obj/Debug/NegyszogUnitTest.pdb b/NegyszogUnitTest/obj/Debug/NegyszogUnitTest.pdb
index 4f47c03..52eb6ee 100644
Binary files a/NegyszogUnitTest/obj/Debug/NegyszogUnitTest.pdb and b/NegyszogUnitTest/obj/Debug/NegyszogUnitTest.pdb differ
diff --git a/csv/obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache b/csv/obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache
index 4e47157..58bd243 100644
Binary files a/csv/obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache and b/csv/obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache differ
diff --git a/csv/obj/Debug/csv.csproj.AssemblyReference.cache b/csv/obj/Debug/csv.csproj.AssemblyReference.cache
index a93305f..6943b8f 100644
Binary files a/csv/obj/Debug/csv.csproj.AssemblyReference.cache and b/csv/obj/Debug/csv.csproj.AssemblyReference.cache differ