[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07 UTC."],[[["\u003cp\u003e\u003ccode\u003eOneofOptions\u003c/code\u003e is a sealed class within the \u003ccode\u003eGoogle.Protobuf.Reflection\u003c/code\u003e namespace, designed for use with Protocol Buffers.\u003c/p\u003e\n"],["\u003cp\u003eThis class implements multiple interfaces including \u003ccode\u003eIExtendableMessage\u003c/code\u003e, \u003ccode\u003eIMessage\u003c/code\u003e, \u003ccode\u003eIEquatable\u003c/code\u003e, \u003ccode\u003eIDeepCloneable\u003c/code\u003e, \u003ccode\u003eIBufferMessage\u003c/code\u003e, and \u003ccode\u003eIMessage\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eOneofOptions\u003c/code\u003e supports extension fields and includes properties for handling features (\u003ccode\u003eFeatures\u003c/code\u003e) and unrecognized options (\u003ccode\u003eUninterpretedOption\u003c/code\u003e), as well as providing a descriptor and parser.\u003c/p\u003e\n"],["\u003cp\u003eIt provides methods for operations such as calculating size (\u003ccode\u003eCalculateSize\u003c/code\u003e), cloning (\u003ccode\u003eClone\u003c/code\u003e), merging (\u003ccode\u003eMergeFrom\u003c/code\u003e), and managing extensions (\u003ccode\u003eClearExtension\u003c/code\u003e, \u003ccode\u003eGetExtension\u003c/code\u003e, \u003ccode\u003eSetExtension\u003c/code\u003e).\u003c/p\u003e\n"],["\u003cp\u003eThe class offers constructors \u003ccode\u003eOneofOptions()\u003c/code\u003e and \u003ccode\u003eOneofOptions(OneofOptions)\u003c/code\u003e allowing for either default initialization or cloning from another instance.\u003c/p\u003e\n"]]],[],null,["# Class OneofOptions (3.27.1)\n\nVersion latestkeyboard_arrow_down\n\n- [3.27.1 (latest)](/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.Reflection.OneofOptions)\n- [3.23.0](/dotnet/docs/reference/Google.Protobuf/3.23.0/Google.Protobuf.Reflection.OneofOptions)\n- [3.15.8](/dotnet/docs/reference/Google.Protobuf/3.15.8/Google.Protobuf.Reflection.OneofOptions) \n\n public sealed class OneofOptions : IExtendableMessage\u003cOneofOptions\u003e, IMessage\u003cOneofOptions\u003e, IEquatable\u003cOneofOptions\u003e, IDeepCloneable\u003cOneofOptions\u003e, IBufferMessage, IMessage\n\nInheritance\n-----------\n\n[object](https://learn.microsoft.com/dotnet/api/system.object) \\\u003e OneofOptions \n\nImplements\n----------\n\n[IExtendableMessage](/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IExtendableMessage-1)[OneofOptions](/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.Reflection.OneofOptions), [IMessage](/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IMessage-1)[OneofOptions](/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.Reflection.OneofOptions), [IEquatable](https://learn.microsoft.com/dotnet/api/system.iequatable-1)[OneofOptions](/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.Reflection.OneofOptions), [IDeepCloneable](/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IDeepCloneable-1)[OneofOptions](/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.Reflection.OneofOptions), [IBufferMessage](/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IBufferMessage), [IMessage](/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IMessage) \n\nInherited Members\n-----------------\n\n[object.Equals(object, object)](https://learn.microsoft.com/dotnet/api/system.object.equals#system-object-equals(system-object-system-object)) \n[object.GetType()](https://learn.microsoft.com/dotnet/api/system.object.gettype) \n[object.ReferenceEquals(object, object)](https://learn.microsoft.com/dotnet/api/system.object.referenceequals)\n\nNamespace\n---------\n\n[Google.Protobuf.Reflection](/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.Reflection)\n\nAssembly\n--------\n\nGoogle.Protobuf.dll\n\nConstructors\n------------\n\n### OneofOptions()\n\n public OneofOptions()\n\n### OneofOptions(OneofOptions)\n\n public OneofOptions(OneofOptions other)\n\nFields\n------\n\n### FeaturesFieldNumber\n\n public const int FeaturesFieldNumber = 1\n\nField number for the \"features\" field.\n\n### UninterpretedOptionFieldNumber\n\n public const int UninterpretedOptionFieldNumber = 999\n\nField number for the \"uninterpreted_option\" field.\n\nProperties\n----------\n\n### Descriptor\n\n public static MessageDescriptor Descriptor { get; }\n\n### Features\n\n public FeatureSet Features { get; set; }\n\nAny features defined in the specific edition.\n\n### Parser\n\n public static MessageParser\u003cOneofOptions\u003e Parser { get; }\n\n### UninterpretedOption\n\n public RepeatedField\u003cUninterpretedOption\u003e UninterpretedOption { get; }\n\nThe parser stores options it doesn't recognize here. See above.\n\nMethods\n-------\n\n### CalculateSize()\n\n public int CalculateSize()\n\nCalculates the size of this message in Protocol Buffer wire format, in bytes.\n\n### ClearExtension\\\u003cTValue\\\u003e(Extension\\\u003cOneofOptions, TValue\\\u003e)\n\n public void ClearExtension\u003cTValue\u003e(Extension\u003cOneofOptions, TValue\u003e extension)\n\nClears the value of the specified extension\n\n### ClearExtension\\\u003cTValue\\\u003e(RepeatedExtension\\\u003cOneofOptions, TValue\\\u003e)\n\n public void ClearExtension\u003cTValue\u003e(RepeatedExtension\u003cOneofOptions, TValue\u003e extension)\n\nClears the value of the specified repeated extension\n\n### Clone()\n\n public OneofOptions Clone()\n\nCreates a deep clone of this object.\n\n### Equals(OneofOptions)\n\n public bool Equals(OneofOptions other)\n\n### Equals(object)\n\n public override bool Equals(object other)\n\n**Overrides** \n[object.Equals(object)](https://learn.microsoft.com/dotnet/api/system.object.equals#system-object-equals(system-object))\n\n### GetExtension\\\u003cTValue\\\u003e(Extension\\\u003cOneofOptions, TValue\\\u003e)\n\n public TValue GetExtension\u003cTValue\u003e(Extension\u003cOneofOptions, TValue\u003e extension)\n\nGets the value of the specified extension\n\n### GetExtension\\\u003cTValue\\\u003e(RepeatedExtension\\\u003cOneofOptions, TValue\\\u003e)\n\n public RepeatedField\u003cTValue\u003e GetExtension\u003cTValue\u003e(RepeatedExtension\u003cOneofOptions, TValue\u003e extension)\n\nGets the value of the specified repeated extension or null if the extension isn't registered in this set.\nFor a version of this method that never returns null, use [GetOrInitializeExtension\\\u003cTValue\\\u003e(RepeatedExtension\\\u003cT, TValue\\\u003e)](/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IExtendableMessage-1#Google_Protobuf_IExtendableMessage_1_GetOrInitializeExtension__1_Google_Protobuf_RepeatedExtension__0___0__)\n\n### GetHashCode()\n\n public override int GetHashCode()\n\n**Overrides** \n[object.GetHashCode()](https://learn.microsoft.com/dotnet/api/system.object.gethashcode)\n\n### GetOrInitializeExtension\\\u003cTValue\\\u003e(RepeatedExtension\\\u003cOneofOptions, TValue\\\u003e)\n\n public RepeatedField\u003cTValue\u003e GetOrInitializeExtension\u003cTValue\u003e(RepeatedExtension\u003cOneofOptions, TValue\u003e extension)\n\nGets the value of the specified repeated extension, registering it if it hasn't already been registered.\n\n### HasExtension\\\u003cTValue\\\u003e(Extension\\\u003cOneofOptions, TValue\\\u003e)\n\n public bool HasExtension\u003cTValue\u003e(Extension\u003cOneofOptions, TValue\u003e extension)\n\nGets whether the value of the specified extension is set\n\n### MergeFrom(CodedInputStream)\n\n public void MergeFrom(CodedInputStream input)\n\nMerges the data from the specified coded input stream with the current message.\n\n**Remarks** \nSee the user guide for precise merge semantics.\n\n### MergeFrom(OneofOptions)\n\n public void MergeFrom(OneofOptions other)\n\nMerges the given message into this one.\n\n**Remarks** \nSee the user guide for precise merge semantics.\n\n### SetExtension\\\u003cTValue\\\u003e(Extension\\\u003cOneofOptions, TValue\\\u003e, TValue)\n\n public void SetExtension\u003cTValue\u003e(Extension\u003cOneofOptions, TValue\u003e extension, TValue value)\n\nSets the value of the specified extension\n\n### ToString()\n\n public override string ToString()\n\n**Overrides** \n[object.ToString()](https://learn.microsoft.com/dotnet/api/system.object.tostring)\n\n### WriteTo(CodedOutputStream)\n\n public void WriteTo(CodedOutputStream output)\n\nWrites the data to the given coded output stream.\n\nExtension Methods\n-----------------\n\n[MessageExtensions.IsInitialized(IMessage)](/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.MessageExtensions#Google_Protobuf_MessageExtensions_IsInitialized_Google_Protobuf_IMessage_) \n[MessageExtensions.MergeDelimitedFrom(IMessage, Stream)](/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.MessageExtensions#Google_Protobuf_MessageExtensions_MergeDelimitedFrom_Google_Protobuf_IMessage_System_IO_Stream_) \n[MessageExtensions.MergeFrom(IMessage, ByteString)](/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.MessageExtensions#Google_Protobuf_MessageExtensions_MergeFrom_Google_Protobuf_IMessage_Google_Protobuf_ByteString_) \n[MessageExtensions.MergeFrom(IMessage, ReadOnlySequence\\\u003cbyte\\\u003e)](/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.MessageExtensions#Google_Protobuf_MessageExtensions_MergeFrom_Google_Protobuf_IMessage_System_Buffers_ReadOnlySequence_System_Byte__) \n[MessageExtensions.MergeFrom(IMessage, byte\\[\\])](/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.MessageExtensions#Google_Protobuf_MessageExtensions_MergeFrom_Google_Protobuf_IMessage_System_Byte___) \n[MessageExtensions.MergeFrom(IMessage, byte\\[\\], int, int)](/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.MessageExtensions#Google_Protobuf_MessageExtensions_MergeFrom_Google_Protobuf_IMessage_System_Byte___System_Int32_System_Int32_) \n[MessageExtensions.MergeFrom(IMessage, Stream)](/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.MessageExtensions#Google_Protobuf_MessageExtensions_MergeFrom_Google_Protobuf_IMessage_System_IO_Stream_) \n[MessageExtensions.MergeFrom(IMessage, ReadOnlySpan\\\u003cbyte\\\u003e)](/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.MessageExtensions#Google_Protobuf_MessageExtensions_MergeFrom_Google_Protobuf_IMessage_System_ReadOnlySpan_System_Byte__) \n[MessageExtensions.ToByteArray(IMessage)](/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.MessageExtensions#Google_Protobuf_MessageExtensions_ToByteArray_Google_Protobuf_IMessage_) \n[MessageExtensions.ToByteString(IMessage)](/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.MessageExtensions#Google_Protobuf_MessageExtensions_ToByteString_Google_Protobuf_IMessage_) \n[MessageExtensions.WriteDelimitedTo(IMessage, Stream)](/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.MessageExtensions#Google_Protobuf_MessageExtensions_WriteDelimitedTo_Google_Protobuf_IMessage_System_IO_Stream_) \n[MessageExtensions.WriteTo(IMessage, IBufferWriter\\\u003cbyte\\\u003e)](/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.MessageExtensions#Google_Protobuf_MessageExtensions_WriteTo_Google_Protobuf_IMessage_System_Buffers_IBufferWriter_System_Byte__) \n[MessageExtensions.WriteTo(IMessage, Stream)](/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.MessageExtensions#Google_Protobuf_MessageExtensions_WriteTo_Google_Protobuf_IMessage_System_IO_Stream_) \n[MessageExtensions.WriteTo(IMessage, Span\\\u003cbyte\\\u003e)](/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.MessageExtensions#Google_Protobuf_MessageExtensions_WriteTo_Google_Protobuf_IMessage_System_Span_System_Byte__)"]]
