### 使用C# WinForms创建问答窗体 为了构建一个简单的问答窗体应用，在此提供一段基础代码作为示例。这段代码展示了如何设置基本的窗口结构以及处理用户的输入。 ```csharp using System; using System.Windows.Forms; namespace QnAFormApp { public partial class QuestionAnswerForm : Form { private Label questionLabel; private TextBox answerTextBox; private Button submitButton; public QuestionAnswerForm() { InitializeComponent(); // 初始化组件 InitializeComponents(); // 设置问题标签文本 questionLabel.Text = "What is the capital of France?"; } private void InitializeComponents(){ this.Size = new System.Drawing.Size(400, 200); this.StartPosition = FormStartPosition.CenterScreen; // 创建问题标签 questionLabel = new Label{ Location = new System.Drawing.Point(50, 50), Size = new System.Drawing.Size(300, 20) }; Controls.Add(questionLabel); // 创建答案文本框 answerTextBox = new TextBox{ Location = new System.Drawing.Point(50, 80), Width = 300, Height = 30 }; Controls.Add(answerTextBox); // 创建提交按钮 submitButton = new Button{ Text = "Submit", Location = new System.Drawing.Point(150, 120), Width = 100, Height = 30 }; submitButton.Click += SubmitButtonClickHandler; Controls.Add(submitButton); } private void SubmitButtonClickHandler(object sender, EventArgs e){ string userAnswer = answerTextBox.Text.Trim().ToLowerInvariant(); if (userAnswer == "paris") { MessageBox.Show("Correct!"); } else { MessageBox.Show("Incorrect. Try again."); } } } } ``` 上述代码定义了一个名为`QuestionAnswerForm`的类，该类继承自`System.Windows.Forms.Form`[^1]。通过初始化方法设置了窗体大小、位置，并添加了用于提问的标签(`questionLabel`)、获取用户回答的文本框(`answerTextBox`)和确认回答的按钮(`submitButton`)。当点击按钮时触发事件处理器`SubmitButtonClickHandler`，用来验证用户输入的答案是否正确并给出反馈。