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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07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 \u003ccode\u003eTextInput\u003c/code\u003e class in the Google Cloud Dialogflow v2beta1 API represents natural language text that will be processed by the API, with the latest version being 1.0.0-beta23.\u003c/p\u003e\n"],["\u003cp\u003eThis class implements several interfaces, including \u003ccode\u003eIMessage\u003c/code\u003e, \u003ccode\u003eIEquatable\u003c/code\u003e, \u003ccode\u003eIDeepCloneable\u003c/code\u003e, and \u003ccode\u003eIBufferMessage\u003c/code\u003e, and inherits from the \u003ccode\u003eobject\u003c/code\u003e class.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eTextInput\u003c/code\u003e class has two constructors, a parameterless one and another that takes a \u003ccode\u003eTextInput\u003c/code\u003e object as an argument for creating a copy.\u003c/p\u003e\n"],["\u003cp\u003eIt includes two key properties: \u003ccode\u003eLanguageCode\u003c/code\u003e, which is a string that specifies the language of the conversational query, and \u003ccode\u003eText\u003c/code\u003e, a UTF-8 encoded string of the natural language text, which has a limit of 256 characters for virtual agent interactions.\u003c/p\u003e\n"],["\u003cp\u003eThe class and its related properties can be found in the \u003ccode\u003eGoogle.Cloud.Dialogflow.V2Beta1\u003c/code\u003e namespace within the \u003ccode\u003eGoogle.Cloud.Dialogflow.V2Beta1.dll\u003c/code\u003e assembly.\u003c/p\u003e\n"]]],[],null,[]]
