Adding checks for null values of subscription ID and storage account name

Author: NehaRaje

src/ServiceManagement/RecoveryServices/Commands.RecoveryServices/Commands.RecoveryServices.csproj

@@ -71,8 +71,9 @@
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\..\..\packages\Microsoft.WindowsAzure.Common.1.4.0\lib\net45\Microsoft.WindowsAzure.Common.NetFramework.dll</HintPath>
     </Reference>
-    <Reference Include="Microsoft.WindowsAzure.Management.Storage">
-      <HintPath>..\..\..\packages\Microsoft.WindowsAzure.Management.Storage.3.1.0\lib\net40\Microsoft.WindowsAzure.Management.Storage.dll</HintPath>
+    <Reference Include="Microsoft.WindowsAzure.Management.Storage, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>..\..\..\packages\Microsoft.WindowsAzure.Management.Storage.3.0.0\lib\net40\Microsoft.WindowsAzure.Management.Storage.dll</HintPath>
     </Reference>
     <Reference Include="Newtonsoft.Json, Version=6.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>

src/ServiceManagement/RecoveryServices/Commands.RecoveryServices/PSRecoveryServicesClient/PSRecoveryServicesClientHelper.cs

@@ -33,6 +33,13 @@ public class PSRecoveryServicesClientHelper
         /// <param name="azureSubscriptionId">Azure Subscription ID</param>
         public static void ValidateSubscriptionAccountAssociation(string azureSubscriptionId)
         {
+            if (string.IsNullOrEmpty(azureSubscriptionId))
+            {
+                throw new InvalidOperationException(
+                    string.Format(
+                    Properties.Resources.SubscriptionIdIsNotValid));
+            }
+
             bool associatedSubscription = false;
             ProfileClient pc = new ProfileClient();
             List<AzureSubscription> subscriptions =
@@ -62,6 +69,13 @@ public static void ValidateSubscriptionAccountAssociation(string azureSubscripti
         /// <param name="azureStorageAccount">Storage Account details</param>
         public static void ValidateStorageAccountAssociation(string azureStorageAccount)
         {
+            if (string.IsNullOrEmpty(azureStorageAccount))
+            {
+                throw new InvalidOperationException(
+                    string.Format(
+                    Properties.Resources.StorageAccountNameIsNotValid));
+            }
+
             bool associatedAccount = false;
 
             SubscriptionCloudCredentials creds 

src/ServiceManagement/RecoveryServices/Commands.RecoveryServices/Properties/Resources.Designer.cs

@@ -212,4 +212,10 @@ ClientRequestId: {3}</value>
   <data name="ReplicationStartTimeInvalid" xml:space="preserve">
     <value>Replication Start Time span value cannot be greater then 24 hours.</value>
   </data>
+  <data name="StorageAccountNameIsNotValid" xml:space="preserve">
+    <value>Please enter the storage account name details in the protection profile.</value>
+  </data>
+  <data name="SubscriptionIdIsNotValid" xml:space="preserve">
+    <value>Please enter the subscription ID details.</value>
+  </data>
 </root>