[[["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\u003eIMessage<T>\u003c/code\u003e is a generic interface for Protocol Buffers messages, requiring the type parameter to be the same as the implementing class.\u003c/p\u003e\n"],["\u003cp\u003eThis interface inherits members like \u003ccode\u003eMergeFrom(CodedInputStream)\u003c/code\u003e, \u003ccode\u003eWriteTo(CodedOutputStream)\u003c/code\u003e, \u003ccode\u003eCalculateSize()\u003c/code\u003e, \u003ccode\u003eDescriptor\u003c/code\u003e, \u003ccode\u003eEquals(T)\u003c/code\u003e, and \u003ccode\u003eClone()\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eMergeFrom(T message)\u003c/code\u003e method merges a given message into the current one, requiring the parameter message not to be null.\u003c/p\u003e\n"],["\u003cp\u003eExtension methods are available for \u003ccode\u003eIMessage\u003c/code\u003e allowing actions like merging from different sources, converting to byte arrays or strings, and writing to various outputs.\u003c/p\u003e\n"],["\u003cp\u003eThe interface is contained within the \u003ccode\u003eGoogle.Protobuf\u003c/code\u003e namespace, within the \u003ccode\u003eGoogle.Protobuf.dll\u003c/code\u003e assembly.\u003c/p\u003e\n"]]],[],null,["# Interface IMessage<T> (3.27.1)\n\nVersion latestkeyboard_arrow_down\n\n- [3.27.1 (latest)](/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IMessage-1)\n- [3.23.0](/dotnet/docs/reference/Google.Protobuf/3.23.0/Google.Protobuf.IMessage-1)\n- [3.15.8](/dotnet/docs/reference/Google.Protobuf/3.15.8/Google.Protobuf.IMessage-1) \n\n public interface IMessage\u003cT\u003e : IMessage, IEquatable\u003cT\u003e, IDeepCloneable\u003cT\u003e where T : IMessage\u003cT\u003e\n\nGeneric interface for a Protocol Buffers message,\nwhere the type parameter is expected to be the same type as\nthe implementation class. \n\nInherited Members\n-----------------\n\n[IMessage.MergeFrom(CodedInputStream)](/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IMessage#Google_Protobuf_IMessage_MergeFrom_Google_Protobuf_CodedInputStream_) \n[IMessage.WriteTo(CodedOutputStream)](/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IMessage#Google_Protobuf_IMessage_WriteTo_Google_Protobuf_CodedOutputStream_) \n[IMessage.CalculateSize()](/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IMessage#Google_Protobuf_IMessage_CalculateSize) \n[IMessage.Descriptor](/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IMessage#Google_Protobuf_IMessage_Descriptor) \n[IEquatable\\\u003cT\\\u003e.Equals(T)](https://learn.microsoft.com/dotnet/api/system.iequatable-1.equals) \n[IDeepCloneable\\\u003cT\\\u003e.Clone()](/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IDeepCloneable-1#Google_Protobuf_IDeepCloneable_1_Clone)\n\nNamespace\n---------\n\n[Google.Protobuf](/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf)\n\nAssembly\n--------\n\nGoogle.Protobuf.dll\n\nMethods\n-------\n\n### MergeFrom(T)\n\n void MergeFrom(T message)\n\nMerges the given message into this one.\n\n**Remarks** \nSee the user guide for precise merge semantics.\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__)"]]
