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在C#中,我们通常使用ASP.NET MVC或Blazor等框架来构建Web应用程序。这些框架提供了内置的表单验证功能,可以与Bootstrap一起使用以实现美观且功能丰富的表单验证。
以下是一个使用ASP.NET MVC和Bootstrap实现表单验证的示例:
- 首先,确保已安装并引用了Bootstrap。在
_Layout.cshtml
文件中添加以下代码以引入Bootstrap CSS和JS文件:
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css"><script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script><script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"></script>
- 创建一个模型类,用于表示表单数据。例如,创建一个名为
User
的类:
public class User { [Required] public string Name { get; set; } [Required] [EmailAddress] public string Email { get; set; } [Required] [DataType(DataType.Password)] public string Password { get; set; } }
- 在控制器中创建一个操作方法,用于处理表单提交:
public class HomeController : Controller { [HttpGet] public ActionResult Register() { return View(); } [HttpPost] public ActionResult Register(User user) { if (ModelState.IsValid) { // 保存用户数据,登录用户等 return RedirectToAction("Index"); } return View(user); } }
- 创建一个视图,用于显示表单。在
Register.cshtml
文件中添加以下代码:
@model YourNamespace.User <div class="container"> <h2>Register</h2> @using (Html.BeginForm()) { @Html.AntiForgeryToken() @Html.ValidationSummary(true, "", new { @class = "text-danger" }) <div class="form-group"> @Html.LabelFor(model => model.Name, htmlAttributes: new { @class = "control-label" }) @Html.EditorFor(model => model.Name, new { htmlAttributes = new { @class = "form-control" } }) @Html.ValidationMessageFor(model => model.Name, "", new { @class = "text-danger" }) </div> <div class="form-group"> @Html.LabelFor(model => model.Email, htmlAttributes: new { @class = "control-label" }) @Html.EditorFor(model => model.Email, new { htmlAttributes = new { @class = "form-control" } }) @Html.ValidationMessageFor(model => model.Email, "", new { @class = "text-danger" }) </div> <div class="form-group"> @Html.LabelFor(model => model.Password, htmlAttributes: new { @class = "control-label" }) @Html.EditorFor(model => model.Password, new { htmlAttributes = new { @class = "form-control" } }) @Html.ValidationMessageFor(model => model.Password, "", new { @class = "text-danger" }) </div> <button type="submit" class="btn btn-primary">Register</button> } </div> @section Scripts { @Scripts.Render("~/bundles/jqueryval") }
这将创建一个具有客户端和服务器端验证的表单。当用户提交表单时,将使用Bootstrap样式显示验证错误消息。