upgrade TargetFrameworks from net45 to net462

Author: JeffreySu

src/DPB/DPB.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net45;netstandard2.0;</TargetFrameworks>
+    <TargetFrameworks>net462;netstandard2.0;</TargetFrameworks>
     <Version>0.6.7</Version>
     <AssemblyName>DPB</AssemblyName>
     <RootNamespace>DPB</RootNamespace>
@@ -42,9 +42,9 @@ You can add annotations to the code templates, and use DPB to automatically filt
     <DefineConstants>TRACE</DefineConstants>
   </PropertyGroup>
 
-  <PropertyGroup Condition="'$(Configuration)|$(TargetFramework)|$(Platform)'=='Release|net45|AnyCPU'">
+  <PropertyGroup Condition="'$(Configuration)|$(TargetFramework)|$(Platform)'=='Release|net462|AnyCPU'">
     <OutputPath>..\..\BuildOutPut\</OutputPath>
-    <DocumentationFile>..\..\BuildOutPut\net45\DPB.xml</DocumentationFile>
+    <DocumentationFile>..\..\BuildOutPut\net462\DPB.xml</DocumentationFile>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(Configuration)|$(TargetFramework)|$(Platform)'=='Release|netstandard2.0|AnyCPU'">