diff --git a/.vs/slnx.sqlite b/.vs/slnx.sqlite
index 4b9275f..a42ccc5 100644
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diff --git a/TimeTableMangment/TimeTableMangment/TimeTableMangment.csproj b/TimeTableMangment/TimeTableMangment/TimeTableMangment.csproj
index 8a497d3..f1426a2 100644
--- a/TimeTableMangment/TimeTableMangment/TimeTableMangment.csproj
+++ b/TimeTableMangment/TimeTableMangment/TimeTableMangment.csproj
@@ -54,9 +54,7 @@
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-      <HintPath>..\..\..\..\..\..\..\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.1\System.dll</HintPath>
-    </Reference>
+    <Reference Include="System" />
     <Reference Include="System.ComponentModel.DataAnnotations" />
     <Reference Include="System.Configuration" />
     <Reference Include="System.Configuration.ConfigurationManager, Version=5.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51, processorArchitecture=MSIL">
diff --git a/TimeTableMangment/TimeTableMangment/bin/Debug/TimeTableMangment.exe b/TimeTableMangment/TimeTableMangment/bin/Debug/TimeTableMangment.exe
index 9b2ff39..fb45438 100644
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diff --git a/TimeTableMangment/TimeTableMangment/bin/Debug/TimeTableMangment.pdb b/TimeTableMangment/TimeTableMangment/bin/Debug/TimeTableMangment.pdb
index 5bbb0c1..1cf7b91 100644
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diff --git a/TimeTableMangment/TimeTableMangment/bin/Debug/TimeTablemanagement.mdf b/TimeTableMangment/TimeTableMangment/bin/Debug/TimeTablemanagement.mdf
index 17b85de..a48b32a 100644
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diff --git a/TimeTableMangment/TimeTableMangment/bin/Debug/TimeTablemanagement_log.ldf b/TimeTableMangment/TimeTableMangment/bin/Debug/TimeTablemanagement_log.ldf
index b4c9faa..0df6284 100644
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diff --git a/TimeTableMangment/TimeTableMangment/obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache b/TimeTableMangment/TimeTableMangment/obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache
index 23cfc3a..d887266 100644
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diff --git a/TimeTableMangment/TimeTableMangment/obj/Debug/TimeTableMangment.csproj.CoreCompileInputs.cache b/TimeTableMangment/TimeTableMangment/obj/Debug/TimeTableMangment.csproj.CoreCompileInputs.cache
index 6bedff7..aed280f 100644
--- a/TimeTableMangment/TimeTableMangment/obj/Debug/TimeTableMangment.csproj.CoreCompileInputs.cache
+++ b/TimeTableMangment/TimeTableMangment/obj/Debug/TimeTableMangment.csproj.CoreCompileInputs.cache
@@ -1 +1 @@
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diff --git a/TimeTableMangment/TimeTableMangment/obj/Debug/TimeTableMangment.csproj.FileListAbsolute.txt b/TimeTableMangment/TimeTableMangment/obj/Debug/TimeTableMangment.csproj.FileListAbsolute.txt
index 08e017f..af474a0 100644
--- a/TimeTableMangment/TimeTableMangment/obj/Debug/TimeTableMangment.csproj.FileListAbsolute.txt
+++ b/TimeTableMangment/TimeTableMangment/obj/Debug/TimeTableMangment.csproj.FileListAbsolute.txt
@@ -223,38 +223,3 @@ E:\backLast\a\itpm prj\TimeTableManagement_ITPMProject\Itpm Project\TimeTableMan
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 E:\backLast\a\itpm prj\TimeTableManagement_ITPMProject\Itpm Project\TimeTableMangment\TimeTableMangment\obj\Debug\TimeTableMangment.pdb
-C:\Users\Chathu_PC\Desktop\ITPM\Itpm Project\TimeTableMangment\TimeTableMangment\bin\Debug\TimeTablemanagement.mdf
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index 01770fa..c22d443 100644
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diff --git a/TimeTableMangment/TimeTableMangment/obj/Debug/TimeTableMangment.exe b/TimeTableMangment/TimeTableMangment/obj/Debug/TimeTableMangment.exe
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