The map keys represent field names. Field names matching the regular
expression __.*__ are reserved. Reserved field names are forbidden except
in certain documented contexts. The map keys, represented as UTF-8, must
not exceed 1,500 bytes and cannot be empty.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07 UTC."],[[["\u003cp\u003eThe latest version of the \u003ccode\u003eMapValue\u003c/code\u003e class in the Firestore v1 API is 3.10.0, with the class itself being a part of the \u003ccode\u003eGoogle.Cloud.Firestore.V1\u003c/code\u003e namespace.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eMapValue\u003c/code\u003e is a sealed class representing a map value within the Firestore database, inheriting from object and implementing interfaces like \u003ccode\u003eIMessage\u003c/code\u003e, \u003ccode\u003eIEquatable\u003c/code\u003e, \u003ccode\u003eIDeepCloneable\u003c/code\u003e, and \u003ccode\u003eIBufferMessage\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThis class includes a constructor \u003ccode\u003eMapValue()\u003c/code\u003e and another constructor \u003ccode\u003eMapValue(MapValue other)\u003c/code\u003e, which allows creating a new \u003ccode\u003eMapValue\u003c/code\u003e object from an existing one, taking another \u003ccode\u003eMapValue\u003c/code\u003e object as parameter.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eFields\u003c/code\u003e property within the \u003ccode\u003eMapValue\u003c/code\u003e class is a \u003ccode\u003eMapField\u003c/code\u003e that holds the map's data, where keys are strings representing field names and values are of the type \u003ccode\u003eValue\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe documentation lists several versions of \u003ccode\u003eMapValue\u003c/code\u003e ranging from 3.10.0 to 2.3.0 and the page provides navigation links to each.\u003c/p\u003e\n"]]],[],null,["# Firestore v1 API - Class MapValue (3.10.0)\n\nVersion latestkeyboard_arrow_down\n\n- [3.10.0 (latest)](/dotnet/docs/reference/Google.Cloud.Firestore.V1/latest/Google.Cloud.Firestore.V1.MapValue)\n- [3.9.0](/dotnet/docs/reference/Google.Cloud.Firestore.V1/3.9.0/Google.Cloud.Firestore.V1.MapValue)\n- [3.8.0](/dotnet/docs/reference/Google.Cloud.Firestore.V1/3.8.0/Google.Cloud.Firestore.V1.MapValue)\n- [3.7.0](/dotnet/docs/reference/Google.Cloud.Firestore.V1/3.7.0/Google.Cloud.Firestore.V1.MapValue)\n- [3.6.0](/dotnet/docs/reference/Google.Cloud.Firestore.V1/3.6.0/Google.Cloud.Firestore.V1.MapValue)\n- [3.5.1](/dotnet/docs/reference/Google.Cloud.Firestore.V1/3.5.1/Google.Cloud.Firestore.V1.MapValue)\n- [3.4.0](/dotnet/docs/reference/Google.Cloud.Firestore.V1/3.4.0/Google.Cloud.Firestore.V1.MapValue)\n- [3.3.0](/dotnet/docs/reference/Google.Cloud.Firestore.V1/3.3.0/Google.Cloud.Firestore.V1.MapValue)\n- [3.2.0](/dotnet/docs/reference/Google.Cloud.Firestore.V1/3.2.0/Google.Cloud.Firestore.V1.MapValue)\n- [3.1.0](/dotnet/docs/reference/Google.Cloud.Firestore.V1/3.1.0/Google.Cloud.Firestore.V1.MapValue)\n- [3.0.0](/dotnet/docs/reference/Google.Cloud.Firestore.V1/3.0.0/Google.Cloud.Firestore.V1.MapValue)\n- [2.5.0](/dotnet/docs/reference/Google.Cloud.Firestore.V1/2.5.0/Google.Cloud.Firestore.V1.MapValue)\n- [2.4.0](/dotnet/docs/reference/Google.Cloud.Firestore.V1/2.4.0/Google.Cloud.Firestore.V1.MapValue)\n- [2.3.0](/dotnet/docs/reference/Google.Cloud.Firestore.V1/2.3.0/Google.Cloud.Firestore.V1.MapValue) \n\n public sealed class MapValue : IMessage\u003cMapValue\u003e, IEquatable\u003cMapValue\u003e, IDeepCloneable\u003cMapValue\u003e, IBufferMessage, IMessage\n\nReference documentation and code samples for the Firestore v1 API class MapValue.\n\nA map value. \n\nInheritance\n-----------\n\n[object](https://learn.microsoft.com/dotnet/api/system.object) \\\u003e MapValue \n\nImplements\n----------\n\n[IMessage](https://cloud.google.com/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IMessage-1.html)[MapValue](/dotnet/docs/reference/Google.Cloud.Firestore.V1/latest/Google.Cloud.Firestore.V1.MapValue), [IEquatable](https://learn.microsoft.com/dotnet/api/system.iequatable-1)[MapValue](/dotnet/docs/reference/Google.Cloud.Firestore.V1/latest/Google.Cloud.Firestore.V1.MapValue), [IDeepCloneable](https://cloud.google.com/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IDeepCloneable-1.html)[MapValue](/dotnet/docs/reference/Google.Cloud.Firestore.V1/latest/Google.Cloud.Firestore.V1.MapValue), [IBufferMessage](https://cloud.google.com/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IBufferMessage.html), [IMessage](https://cloud.google.com/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IMessage.html) \n\nInherited Members\n-----------------\n\n[object.GetHashCode()](https://learn.microsoft.com/dotnet/api/system.object.gethashcode) \n[object.GetType()](https://learn.microsoft.com/dotnet/api/system.object.gettype) \n[object.ToString()](https://learn.microsoft.com/dotnet/api/system.object.tostring)\n\nNamespace\n---------\n\n[Google.Cloud.Firestore.V1](/dotnet/docs/reference/Google.Cloud.Firestore.V1/latest/Google.Cloud.Firestore.V1)\n\nAssembly\n--------\n\nGoogle.Cloud.Firestore.V1.dll\n\nConstructors\n------------\n\n### MapValue()\n\n public MapValue()\n\n### MapValue(MapValue)\n\n public MapValue(MapValue other)\n\nProperties\n----------\n\n### Fields\n\n public MapField\u003cstring, Value\u003e Fields { get; }\n\nThe map's fields.\n\nThe map keys represent field names. Field names matching the regular\nexpression `__.*__` are reserved. Reserved field names are forbidden except\nin certain documented contexts. The map keys, represented as UTF-8, must\nnot exceed 1,500 bytes and cannot be empty."]]
