Required. The language of this conversational query. See Language
Support
for a list of the currently supported language codes. Note that queries in
the same session do not necessarily need to specify the same language.
[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07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 available for the Google Cloud Dialogflow v2 API class TextInput is 4.26.0, with a range of versions from 3.2.0 to 4.26.0 documented.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eTextInput\u003c/code\u003e class represents natural language text intended for processing and is part of the Google.Cloud.Dialogflow.V2 namespace, contained in the \u003ccode\u003eGoogle.Cloud.Dialogflow.V2.dll\u003c/code\u003e assembly.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eTextInput\u003c/code\u003e class has two constructors, one default and another that accepts another \u003ccode\u003eTextInput\u003c/code\u003e object for copying.\u003c/p\u003e\n"],["\u003cp\u003eThere are two primary properties within \u003ccode\u003eTextInput\u003c/code\u003e: \u003ccode\u003eLanguageCode\u003c/code\u003e, specifying the query's language, and \u003ccode\u003eText\u003c/code\u003e, which is the UTF-8 encoded text to be processed, with length not to exceed 256 characters.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eTextInput\u003c/code\u003e class implements various interfaces including IMessage, IEquatable, IDeepCloneable, and IBufferMessage.\u003c/p\u003e\n"]]],[],null,[]]