Add nullable context to Csla.Data.SqlClient and Csla.Data.SqlClient.Fx (#4005)

Author: StefanOssendorf

Source/Csla.Data.SqlClient.Fx/Csla.Data.SqlClient.Fx.csproj

@@ -11,6 +11,7 @@
     <BaseOutputPath>..\..\Bin</BaseOutputPath>
     <GenerateDocumentationFile>True</GenerateDocumentationFile>
     <GeneratePackageOnBuild>False</GeneratePackageOnBuild>
+    <Nullable>enable</Nullable>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">

Source/Csla.Data.SqlClient.Fx/SafeSqlDataReader.cs

@@ -25,7 +25,7 @@ public class SafeSqlDataReader : SafeDataReader
     /// Get a reference to the underlying
     /// SqlDataReader if present.
     /// </summary>
-    public SqlDataReader SqlDataReader { get; }
+    public SqlDataReader? SqlDataReader { get; }
 
     /// <summary>
     /// Initializes the SafeDataReader object to use data from

Source/Csla.Data.SqlClient/Csla.Data.SqlClient.csproj

@@ -9,6 +9,7 @@
     <BaseOutputPath>..\..\Bin</BaseOutputPath>
     <GenerateDocumentationFile>True</GenerateDocumentationFile>
     <GeneratePackageOnBuild>False</GeneratePackageOnBuild>
+    <Nullable>enable</Nullable>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|AnyCPU'">