name 'forml' is not defined

The error message you are seeing indicates that you are trying to use a variable or function called "forml" that has not been defined.

To fix this error, you need to define or import the "forml" module in your code before trying to use it. If you are using a third-party library called "forml", make sure it is properly installed and imported in your code.

Alternatively, it could be a typo or a mistake in the variable name. Double-check your code and make sure you are using the correct spelling and syntax.

相关问题

创建Windows窗体应用程序项目experment9，向其中添加一个窗体 Forml；用一个学生纳数组存放10名学生的记录，然后根据用户指定的学号显示相应的学生记录。

以下是实现步骤及代码示例：

1. 在 Visual Studio 中创建 Windows 窗体应用程序项目 experment9，向其中添加一个窗体 Form1。

2. 在 Form1 中添加以下控件：

- Label 控件 Label1，用于显示“请输入学号：”的提示信息。
- TextBox 控件 TextBox1，用于用户输入学号。
- Button 控件 Button1，用于触发查询学生记录的操作。
- DataGridView 控件 DataGridView1，用于显示学生记录。

3. 在 Form1.cs 文件中定义一个学生类 Student，包含以下属性：

- 学号（ID）：string 类型。
- 姓名（Name）：string 类型。
- 年龄（Age）：int 类型。
- 性别（Gender）：string 类型。

public class Student
{
    public string ID { get; set; }
    public string Name { get; set; }
    public int Age { get; set; }
    public string Gender { get; set; }
}

4. 在 Form1.cs 文件中定义一个学生数组 students，包含10名学生的记录，用于模拟学生信息数据。

private Student[] students = new Student[]
{
    new Student() { ID = "001", Name = "张三", Age = 18, Gender = "男" },
    new Student() { ID = "002", Name = "李四", Age = 19, Gender = "女" },
    new Student() { ID = "003", Name = "王五", Age = 20, Gender = "男" },
    new Student() { ID = "004", Name = "赵六", Age = 21, Gender = "女" },
    new Student() { ID = "005", Name = "钱七", Age = 22, Gender = "男" },
    new Student() { ID = "006", Name = "孙八", Age = 23, Gender = "女" },
    new Student() { ID = "007", Name = "周九", Age = 24, Gender = "男" },
    new Student() { ID = "008", Name = "吴十", Age = 25, Gender = "女" },
    new Student() { ID = "009", Name = "郑十一", Age = 26, Gender = "男" },
    new Student() { ID = "010", Name = "冯十二", Age = 27, Gender = "女" },
};

5. 在 Form1.cs 文件中定义一个方法 ShowStudent，用于根据用户输入的学号显示相应的学生记录。

private void ShowStudent(string id)
{
    var student = students.FirstOrDefault(s => s.ID == id);
    if (student != null)
    {
        DataGridView1.DataSource = new List<Student>() { student };
    }
    else
    {
        MessageBox.Show("未找到该学生记录！");
    }
}

6. 在 Button1 的 Click 事件中调用 ShowStudent 方法，并将用户输入的学号作为参数传入。

private void Button1_Click(object sender, EventArgs e)
{
    string id = TextBox1.Text.Trim();
    if (!string.IsNullOrEmpty(id))
    {
        ShowStudent(id);
    }
    else
    {
        MessageBox.Show("请输入学号！");
    }
}

7. 运行程序，输入学号，点击“查询”按钮，即可显示相应的学生记录。

完整代码示例：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace experment9
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        public class Student
        {
            public string ID { get; set; }
            public string Name { get; set; }
            public int Age { get; set; }
            public string Gender { get; set; }
        }

        private Student[] students = new Student[]
        {
            new Student() { ID = "001", Name = "张三", Age = 18, Gender = "男" },
            new Student() { ID = "002", Name = "李四", Age = 19, Gender = "女" },
            new Student() { ID = "003", Name = "王五", Age = 20, Gender = "男" },
            new Student() { ID = "004", Name = "赵六", Age = 21, Gender = "女" },
            new Student() { ID = "005", Name = "钱七", Age = 22, Gender = "男" },
            new Student() { ID = "006", Name = "孙八", Age = 23, Gender = "女" },
            new Student() { ID = "007", Name = "周九", Age = 24, Gender = "男" },
            new Student() { ID = "008", Name = "吴十", Age = 25, Gender = "女" },
            new Student() { ID = "009", Name = "郑十一", Age = 26, Gender = "男" },
            new Student() { ID = "010", Name = "冯十二", Age = 27, Gender = "女" },
        };

        private void ShowStudent(string id)
        {
            var student = students.FirstOrDefault(s => s.ID == id);
            if (student != null)
            {
                DataGridView1.DataSource = new List<Student>() { student };
            }
            else
            {
                MessageBox.Show("未找到该学生记录！");
            }
        }

        private void Button1_Click(object sender, EventArgs e)
        {
            string id = TextBox1.Text.Trim();
            if (!string.IsNullOrEmpty(id))
            {
                ShowStudent(id);
            }
            else
            {
                MessageBox.Show("请输入学号！");
            }
        }
    }
}

form style="font-size: 16px;width: 400px;" name="forml" onsubmit="test();"> <p>&nbsp;用户名:<input id="username" type="text" size="20">*</p> <p>用户密码:<input id="password1" type="password" size="20">*</p> <p>重复密码:<input id="password2" type="password" size="20">*</p> <p>电子邮件:<input id="email" type="text" size="20">*</p> <p>&nbsp;&nbsp;电话:<input id="tel" type="text" size="20">*</p> <p>身份证号:<input id="idcard" type="text" size="20">*</p> <p><input type="submit" value="提交">&nbsp;&nbsp;&nbsp; <input type="reset" value="重置"> </p>用js验证

你的问题是如何用 JavaScript 对表单进行验证？

以下是一个简单的表单验证示例，可以验证用户名、密码、电子邮件、电话和身份证号是否符合指定的格式要求：

<!DOCTYPE html>
<html>
<head>
	<title>表单验证</title>
	<script>
		function validateForm() {
			var username = document.getElementById("username").value;
			var password1 = document.getElementById("password1").value;
			var password2 = document.getElementById("password2").value;
			var email = document.getElementById("email").value;
			var tel = document.getElementById("tel").value;
			var idcard = document.getElementById("idcard").value;

			// 验证用户名
			if (username == "") {
				alert("用户名不能为空");
				return false;
			}

			// 验证密码
			if (password1 == "" || password2 == "") {
				alert("密码不能为空");
				return false;
			} else if (password1 != password2) {
				alert("两次输入的密码不一致");
				return false;
			}

			// 验证电子邮件
			var emailPattern = /^\w+@[a-zA-Z_]+?\.[a-zA-Z]{2,3}$/;
			if (!emailPattern.test(email)) {
				alert("电子邮件格式不正确");
				return false;
			}

			// 验证电话
			var telPattern = /^1[34578]\d{9}$/;
			if (!telPattern.test(tel)) {
				alert("电话格式不正确");
				return false;
			}

			// 验证身份证号
			var idcardPattern = /^\d{17}[\dX]$/;
			if (!idcardPattern.test(idcard)) {
				alert("身份证号格式不正确");
				return false;
			}

			return true;
		}
	</script>
</head>
<body>
	<form name="forml" onsubmit="return validateForm();">
		<p>&nbsp;用户名:<input id="username" type="text" size="20">*</p>
		<p>用户密码:<input id="password1" type="password" size="20">*</p>
		<p>重复密码:<input id="password2" type="password" size="20">*</p>
		<p>电子邮件:<input id="email" type="text" size="20">*</p>
		<p>&nbsp;&nbsp;电话:<input id="tel" type="text" size="20">*</p>
		<p>身份证号:<input id="idcard" type="text" size="20">*</p>
		<p><input type="submit" value="提交">&nbsp;&nbsp;&nbsp;
			<input type="reset" value="重置">
		</p>
	</form>
</body>
</html>

在这个示例中，我们使用 JavaScript 的正则表达式来验证电子邮件、电话和身份证号的格式。如果表单验证不通过，会弹出一个警告框，阻止表单提交。如果表单验证通过，就会提交表单。