diff --git a/src/System.Management.Automation/utils/CommandDiscoveryExceptions.cs b/src/System.Management.Automation/utils/CommandDiscoveryExceptions.cs
index e08d8e1a65..4ce3568cf5 100644
--- a/src/System.Management.Automation/utils/CommandDiscoveryExceptions.cs
+++ b/src/System.Management.Automation/utils/CommandDiscoveryExceptions.cs
@@ -121,14 +121,11 @@ namespace System.Management.Automation
         {
             get
             {
-                if (_errorRecord == null)
-                {
-                    _errorRecord = new ErrorRecord(
-                        new ParentContainsErrorRecordException(this),
-                        _errorId,
-                        _errorCategory,
-                        _commandName);
-                }
+                _errorRecord ??= new ErrorRecord(
+                    new ParentContainsErrorRecordException(this),
+                    _errorId,
+                    _errorCategory,
+                    _commandName);
 
                 return _errorRecord;
             }
diff --git a/src/System.Management.Automation/utils/ExecutionExceptions.cs b/src/System.Management.Automation/utils/ExecutionExceptions.cs
index 226a9cb8cd..ed04086101 100644
--- a/src/System.Management.Automation/utils/ExecutionExceptions.cs
+++ b/src/System.Management.Automation/utils/ExecutionExceptions.cs
@@ -161,14 +161,11 @@ namespace System.Management.Automation
         {
             get
             {
-                if (_errorRecord == null)
-                {
-                    _errorRecord = new ErrorRecord(
-                        new ParentContainsErrorRecordException(this),
-                        "CmdletInvocationException",
-                        ErrorCategory.NotSpecified,
-                        null);
-                }
+                _errorRecord ??= new ErrorRecord(
+                    new ParentContainsErrorRecordException(this),
+                    "CmdletInvocationException",
+                    ErrorCategory.NotSpecified,
+                    null);
 
                 return _errorRecord;
             }
@@ -891,14 +888,11 @@ namespace System.Management.Automation
         {
             get
             {
-                if (_errorRecord == null)
-                {
-                    _errorRecord = new ErrorRecord(
-                        new ParentContainsErrorRecordException(this),
-                        "CallDepthOverflow",
-                        ErrorCategory.InvalidOperation,
-                        CallDepth);
-                }
+                _errorRecord ??= new ErrorRecord(
+                    new ParentContainsErrorRecordException(this),
+                    "CallDepthOverflow",
+                    ErrorCategory.InvalidOperation,
+                    CallDepth);
 
                 return _errorRecord;
             }
@@ -999,14 +993,11 @@ namespace System.Management.Automation
         {
             get
             {
-                if (_errorRecord == null)
-                {
-                    _errorRecord = new ErrorRecord(
-                        new ParentContainsErrorRecordException(this),
-                        "CallDepthOverflow",
-                        ErrorCategory.InvalidOperation,
-                        CallDepth);
-                }
+                _errorRecord ??= new ErrorRecord(
+                    new ParentContainsErrorRecordException(this),
+                    "CallDepthOverflow",
+                    ErrorCategory.InvalidOperation,
+                    CallDepth);
 
                 return _errorRecord;
             }
diff --git a/src/System.Management.Automation/utils/MshArgumentException.cs b/src/System.Management.Automation/utils/MshArgumentException.cs
index d9c9ce725e..8bc58e6c42 100644
--- a/src/System.Management.Automation/utils/MshArgumentException.cs
+++ b/src/System.Management.Automation/utils/MshArgumentException.cs
@@ -121,14 +121,11 @@ namespace System.Management.Automation
         {
             get
             {
-                if (_errorRecord == null)
-                {
-                    _errorRecord = new ErrorRecord(
-                        new ParentContainsErrorRecordException(this),
-                        _errorId,
-                        ErrorCategory.InvalidArgument,
-                        null);
-                }
+                _errorRecord ??= new ErrorRecord(
+                    new ParentContainsErrorRecordException(this),
+                    _errorId,
+                    ErrorCategory.InvalidArgument,
+                    null);
 
                 return _errorRecord;
             }
diff --git a/src/System.Management.Automation/utils/MshArgumentNullException.cs b/src/System.Management.Automation/utils/MshArgumentNullException.cs
index be20163607..294c91ea43 100644
--- a/src/System.Management.Automation/utils/MshArgumentNullException.cs
+++ b/src/System.Management.Automation/utils/MshArgumentNullException.cs
@@ -119,14 +119,11 @@ namespace System.Management.Automation
         {
             get
             {
-                if (_errorRecord == null)
-                {
-                    _errorRecord = new ErrorRecord(
-                        new ParentContainsErrorRecordException(this),
-                        _errorId,
-                        ErrorCategory.InvalidArgument,
-                        null);
-                }
+                _errorRecord ??= new ErrorRecord(
+                    new ParentContainsErrorRecordException(this),
+                    _errorId,
+                    ErrorCategory.InvalidArgument,
+                    null);
 
                 return _errorRecord;
             }
diff --git a/src/System.Management.Automation/utils/MshArgumentOutOfRangeException.cs b/src/System.Management.Automation/utils/MshArgumentOutOfRangeException.cs
index 2bf48e9047..b8db294e99 100644
--- a/src/System.Management.Automation/utils/MshArgumentOutOfRangeException.cs
+++ b/src/System.Management.Automation/utils/MshArgumentOutOfRangeException.cs
@@ -117,14 +117,11 @@ namespace System.Management.Automation
         {
             get
             {
-                if (_errorRecord == null)
-                {
-                    _errorRecord = new ErrorRecord(
-                        new ParentContainsErrorRecordException(this),
-                        _errorId,
-                        ErrorCategory.InvalidArgument,
-                        null);
-                }
+                _errorRecord ??= new ErrorRecord(
+                    new ParentContainsErrorRecordException(this),
+                    _errorId,
+                    ErrorCategory.InvalidArgument,
+                    null);
 
                 return _errorRecord;
             }
diff --git a/src/System.Management.Automation/utils/MshInvalidOperationException.cs b/src/System.Management.Automation/utils/MshInvalidOperationException.cs
index f9a65fcf8a..ff238ef20c 100644
--- a/src/System.Management.Automation/utils/MshInvalidOperationException.cs
+++ b/src/System.Management.Automation/utils/MshInvalidOperationException.cs
@@ -115,14 +115,11 @@ namespace System.Management.Automation
         {
             get
             {
-                if (_errorRecord == null)
-                {
-                    _errorRecord = new ErrorRecord(
-                        new ParentContainsErrorRecordException(this),
-                        _errorId,
-                        _errorCategory,
-                        _target);
-                }
+                _errorRecord ??= new ErrorRecord(
+                    new ParentContainsErrorRecordException(this),
+                    _errorId,
+                    _errorCategory,
+                    _target);
 
                 return _errorRecord;
             }
diff --git a/src/System.Management.Automation/utils/MshNotImplementedException.cs b/src/System.Management.Automation/utils/MshNotImplementedException.cs
index 6c2dd504cf..e6e1d1b54e 100644
--- a/src/System.Management.Automation/utils/MshNotImplementedException.cs
+++ b/src/System.Management.Automation/utils/MshNotImplementedException.cs
@@ -98,14 +98,11 @@ namespace System.Management.Automation
         {
             get
             {
-                if (_errorRecord == null)
-                {
-                    _errorRecord = new ErrorRecord(
-                        new ParentContainsErrorRecordException(this),
-                        _errorId,
-                        ErrorCategory.NotImplemented,
-                        null);
-                }
+                _errorRecord ??= new ErrorRecord(
+                    new ParentContainsErrorRecordException(this),
+                    _errorId,
+                    ErrorCategory.NotImplemented,
+                    null);
 
                 return _errorRecord;
             }
diff --git a/src/System.Management.Automation/utils/MshNotSupportedException.cs b/src/System.Management.Automation/utils/MshNotSupportedException.cs
index 7614080dcf..d7002f9111 100644
--- a/src/System.Management.Automation/utils/MshNotSupportedException.cs
+++ b/src/System.Management.Automation/utils/MshNotSupportedException.cs
@@ -98,14 +98,11 @@ namespace System.Management.Automation
         {
             get
             {
-                if (_errorRecord == null)
-                {
-                    _errorRecord = new ErrorRecord(
-                        new ParentContainsErrorRecordException(this),
-                        _errorId,
-                        ErrorCategory.NotImplemented,
-                        null);
-                }
+                _errorRecord ??= new ErrorRecord(
+                    new ParentContainsErrorRecordException(this),
+                    _errorId,
+                    ErrorCategory.NotImplemented,
+                    null);
 
                 return _errorRecord;
             }
diff --git a/src/System.Management.Automation/utils/MshObjectDisposedException.cs b/src/System.Management.Automation/utils/MshObjectDisposedException.cs
index b8d4ab421c..8ceabb8422 100644
--- a/src/System.Management.Automation/utils/MshObjectDisposedException.cs
+++ b/src/System.Management.Automation/utils/MshObjectDisposedException.cs
@@ -104,14 +104,11 @@ namespace System.Management.Automation
         {
             get
             {
-                if (_errorRecord == null)
-                {
-                    _errorRecord = new ErrorRecord(
-                        new ParentContainsErrorRecordException(this),
-                        _errorId,
-                        ErrorCategory.InvalidOperation,
-                        null);
-                }
+                _errorRecord ??= new ErrorRecord(
+                    new ParentContainsErrorRecordException(this),
+                    _errorId,
+                    ErrorCategory.InvalidOperation,
+                    null);
 
                 return _errorRecord;
             }
diff --git a/src/System.Management.Automation/utils/ObjectStream.cs b/src/System.Management.Automation/utils/ObjectStream.cs
index 2f4cbef8a0..c9aef1b928 100644
--- a/src/System.Management.Automation/utils/ObjectStream.cs
+++ b/src/System.Management.Automation/utils/ObjectStream.cs
@@ -609,15 +609,12 @@ namespace System.Management.Automation.Internal
 
                 lock (_monitorObject)
                 {
-                    if (_readWaitHandle == null)
-                    {
-                        // Create the handle signaled if there are objects in the stream
-                        // or the stream has been closed.  The closed scenario addresses
-                        // Pipeline readers that execute asynchronously.  Since the pipeline
-                        // may complete with zero objects before the caller objects this
-                        // handle, it will block indefinitely unless it is set.
-                        _readWaitHandle = new ManualResetEvent(_objects.Count > 0 || !_isOpen);
-                    }
+                    // Create the handle signaled if there are objects in the stream
+                    // or the stream has been closed.  The closed scenario addresses
+                    // Pipeline readers that execute asynchronously.  Since the pipeline
+                    // may complete with zero objects before the caller objects this
+                    // handle, it will block indefinitely unless it is set.
+                    _readWaitHandle ??= new ManualResetEvent(_objects.Count > 0 || !_isOpen);
 
                     handle = _readWaitHandle;
                 }
@@ -642,10 +639,7 @@ namespace System.Management.Automation.Internal
 
                 lock (_monitorObject)
                 {
-                    if (_writeWaitHandle == null)
-                    {
-                        _writeWaitHandle = new ManualResetEvent(_objects.Count < _capacity || !_isOpen);
-                    }
+                    _writeWaitHandle ??= new ManualResetEvent(_objects.Count < _capacity || !_isOpen);
 
                     handle = _writeWaitHandle;
                 }
@@ -665,17 +659,14 @@ namespace System.Management.Automation.Internal
 
                 lock (_monitorObject)
                 {
-                    if (_reader == null)
-                    {
-                        // Always return an object reader, even if the stream
-                        // is closed. This is to address requesting the object reader
-                        // after calling Pipeline.Execute(). NOTE: If Execute completes
-                        // without writing data to the output queue, the
-                        // stream will be in the EndOfPipeline state because the
-                        // stream is closed and has zero data.  Since this is a valid
-                        // and expected execution path, we don't want to throw an exception.
-                        _reader = new ObjectReader(this);
-                    }
+                    // Always return an object reader, even if the stream
+                    // is closed. This is to address requesting the object reader
+                    // after calling Pipeline.Execute(). NOTE: If Execute completes
+                    // without writing data to the output queue, the
+                    // stream will be in the EndOfPipeline state because the
+                    // stream is closed and has zero data.  Since this is a valid
+                    // and expected execution path, we don't want to throw an exception.
+                    _reader ??= new ObjectReader(this);
 
                     reader = _reader;
                 }
@@ -695,17 +686,14 @@ namespace System.Management.Automation.Internal
 
                 lock (_monitorObject)
                 {
-                    if (_mshreader == null)
-                    {
-                        // Always return an object reader, even if the stream
-                        // is closed. This is to address requesting the object reader
-                        // after calling Pipeline.Execute(). NOTE: If Execute completes
-                        // without writing data to the output queue, the
-                        // stream will be in the EndOfPipeline state because the
-                        // stream is closed and has zero data.  Since this is a valid
-                        // and expected execution path, we don't want to throw an exception.
-                        _mshreader = new PSObjectReader(this);
-                    }
+                    // Always return an object reader, even if the stream
+                    // is closed. This is to address requesting the object reader
+                    // after calling Pipeline.Execute(). NOTE: If Execute completes
+                    // without writing data to the output queue, the
+                    // stream will be in the EndOfPipeline state because the
+                    // stream is closed and has zero data.  Since this is a valid
+                    // and expected execution path, we don't want to throw an exception.
+                    _mshreader ??= new PSObjectReader(this);
 
                     reader = _mshreader;
                 }
@@ -726,10 +714,7 @@ namespace System.Management.Automation.Internal
 
                 lock (_monitorObject)
                 {
-                    if (_writer == null)
-                    {
-                        _writer = new ObjectWriter(this) as PipelineWriter;
-                    }
+                    _writer ??= new ObjectWriter(this) as PipelineWriter;
 
                     writer = _writer;
                 }
@@ -1686,10 +1671,7 @@ namespace System.Management.Automation.Internal
                 {
                     lock (_syncObject)
                     {
-                        if (_objectReader == null)
-                        {
-                            _objectReader = new PSDataCollectionReader<T, object>(this);
-                        }
+                        _objectReader ??= new PSDataCollectionReader<T, object>(this);
                     }
                 }
 
@@ -1711,11 +1693,8 @@ namespace System.Management.Automation.Internal
             {
                 lock (_syncObject)
                 {
-                    if (_objectReaderForPipeline == null)
-                    {
-                        _objectReaderForPipeline =
-                            new PSDataCollectionPipelineReader<T, object>(this, computerName, runspaceId);
-                    }
+                    _objectReaderForPipeline ??=
+                        new PSDataCollectionPipelineReader<T, object>(this, computerName, runspaceId);
                 }
             }
 
@@ -1733,10 +1712,7 @@ namespace System.Management.Automation.Internal
                 {
                     lock (_syncObject)
                     {
-                        if (_psobjectReader == null)
-                        {
-                            _psobjectReader = new PSDataCollectionReader<T, PSObject>(this);
-                        }
+                        _psobjectReader ??= new PSDataCollectionReader<T, PSObject>(this);
                     }
                 }
 
@@ -1758,11 +1734,8 @@ namespace System.Management.Automation.Internal
             {
                 lock (_syncObject)
                 {
-                    if (_psobjectReaderForPipeline == null)
-                    {
-                        _psobjectReaderForPipeline =
-                            new PSDataCollectionPipelineReader<T, PSObject>(this, computerName, runspaceId);
-                    }
+                    _psobjectReaderForPipeline ??=
+                        new PSDataCollectionPipelineReader<T, PSObject>(this, computerName, runspaceId);
                 }
             }
 
@@ -1784,10 +1757,7 @@ namespace System.Management.Automation.Internal
                 {
                     lock (_syncObject)
                     {
-                        if (_writer == null)
-                        {
-                            _writer = new PSDataCollectionWriter<T>(this) as PipelineWriter;
-                        }
+                        _writer ??= new PSDataCollectionWriter<T>(this) as PipelineWriter;
                     }
                 }
 
diff --git a/src/System.Management.Automation/utils/ParameterBinderExceptions.cs b/src/System.Management.Automation/utils/ParameterBinderExceptions.cs
index 841523f6bd..fcb10737d3 100644
--- a/src/System.Management.Automation/utils/ParameterBinderExceptions.cs
+++ b/src/System.Management.Automation/utils/ParameterBinderExceptions.cs
@@ -212,10 +212,7 @@ namespace System.Management.Automation
             _parameterType = parameterType;
             _typeSpecified = typeSpecified;
 
-            if (errorPosition == null)
-            {
-                errorPosition = invocationInfo.ScriptPosition;
-            }
+            errorPosition ??= invocationInfo.ScriptPosition;
 
             if (errorPosition != null)
             {
diff --git a/src/System.Management.Automation/utils/RuntimeException.cs b/src/System.Management.Automation/utils/RuntimeException.cs
index 4ba776799e..ec0efd4f06 100644
--- a/src/System.Management.Automation/utils/RuntimeException.cs
+++ b/src/System.Management.Automation/utils/RuntimeException.cs
@@ -151,14 +151,11 @@ namespace System.Management.Automation
         {
             get
             {
-                if (_errorRecord == null)
-                {
-                    _errorRecord = new ErrorRecord(
-                        new ParentContainsErrorRecordException(this),
-                        _errorId,
-                        _errorCategory,
-                        _targetObject);
-                }
+                _errorRecord ??= new ErrorRecord(
+                    new ParentContainsErrorRecordException(this),
+                    _errorId,
+                    _errorCategory,
+                    _targetObject);
 
                 return _errorRecord;
             }
diff --git a/src/System.Management.Automation/utils/SessionStateExceptions.cs b/src/System.Management.Automation/utils/SessionStateExceptions.cs
index a08e7615dc..34ad5c7f4e 100644
--- a/src/System.Management.Automation/utils/SessionStateExceptions.cs
+++ b/src/System.Management.Automation/utils/SessionStateExceptions.cs
@@ -234,14 +234,11 @@ namespace System.Management.Automation
         {
             get
             {
-                if (_errorRecord == null)
-                {
-                    _errorRecord = new ErrorRecord(
-                        new ParentContainsErrorRecordException(this),
-                        "ProviderInvocationException",
-                        ErrorCategory.NotSpecified,
-                        null);
-                }
+                _errorRecord ??= new ErrorRecord(
+                    new ParentContainsErrorRecordException(this),
+                    "ProviderInvocationException",
+                    ErrorCategory.NotSpecified,
+                    null);
 
                 return _errorRecord;
             }
@@ -497,14 +494,11 @@ namespace System.Management.Automation
         {
             get
             {
-                if (_errorRecord == null)
-                {
-                    _errorRecord = new ErrorRecord(
-                        new ParentContainsErrorRecordException(this),
-                        _errorId,
-                        _errorCategory,
-                        _itemName);
-                }
+                _errorRecord ??= new ErrorRecord(
+                    new ParentContainsErrorRecordException(this),
+                    _errorId,
+                    _errorCategory,
+                    _itemName);
 
                 return _errorRecord;
             }