Question

您好我是cshtml的新手，我在ASP.NET Razor v2中有网页我想在点击按钮时将一些数据插入数据库。这些数据来自各种文本框，也可以上传图片。我可以知道如何在点击按钮时提供操作吗？

我在我的cshtml文件中尝试了这个：

    <button type="submit" name="action" value="insertRegistered">Uložit</button>
    @if (action == "insertRegistered")
    {
    var db1 = Database.Open("StarterSite");
    var sql = "UPDATE services SET FileName=@0, FileContent=@1, MimeType=@2 WHERE IDservice=6";
    db1.Execute(sql, fileName, fileContent, fileMime);
    }

Answer 1

在WebMatrix中，您可以通过以下方式实现此目的：

剃刀代码：

@{
    var fileName = "";
    var fileContent = "";
    var fileMime = "";
    var IDservice = "";

     @*TEST CODE *@
    @*if (!IsPost)
    {

        IDservice = "1";
        var db = Database.Open("StarterSite");
        var dbCommand = "SELECT * FROM services WHERE IDservice = @0";
        var row = db.QuerySingle(dbCommand, IDservice);
        fileContent = row.fileContent;
        fileMime = row.MimeType;
        fileName = row.fileName;
    } *@

    if (IsPost)
    {
        fileName = Request.Form["fileName"];
        fileContent = Request.Form["fileContent"];
        fileMime = Request.Form["fileMime"];
        IDservice = Request.Form["IDservice"];
        var db1 = Database.Open("StarterSite");
        var sql = "UPDATE services SET FileName=@0, FileContent=@1, MimeType=@2 WHERE IDservice=@3";
        db1.Execute(sql, fileName, fileContent, fileMime, IDservice);
    } 
}

标记应如下所示：

<!DOCTYPE html>
<html>
  <head>  
      <meta charset="utf-8" />
   <title>Service</title>
      </head>
    <body>
    <form method="post">
        <fieldset>
            <legend>Service Information</legend>

            <p><label for="fileName">FileName:</label>
                <input type="text" name="fileName" value="@fileName" /></p>

            <p><label for="fileContent">File Content:</label>
                <input type="text" name="fileContent" value="@fileContent" /></p>

            <p><label for="fileMime">Mime:</label>
                <input type="text" name="fileMime" value="@fileMime" /></p>

            <input type="hidden" name="IDservice" value="@IDservice" />

            <p>  <button type="submit" name="action" value="insert Registered">Uložit</button></p>
        </fieldset>
    </form>
</body>
</html>

这是一个有效的sample。

Here是一套教程，我相信它们应该非常有用！

Answer 2

将数据库逻辑放入控制器操作中，如下所示：

public class HomeController : Controller
{
    [AcceptVerbs(HttpVerbs.Post)]
    public ActionResult Edit(int id, FormCollection collection)
    {
        try
        {
            // Do database update logic here

            // Upon successfully updating the database redirect to a view 
            // that displays the information, read-only version not editable
            return RedirectToAction("Index");
        }
        catch(Exception ex)
        {
            // If something went wrong, then re-display the view 
            // the user tried to update database from
            return View();
        }
    }
}

现在，在您的视图中，使用HTML帮助器Html.BeginForm()创建表单，如下所示：

@using (Html.BeginForm("ActionMethodName","ControllerName"))
{
    ... your input, labels, textboxes and other html controls go here
    <input class="button" id="submit" type="submit" value="Uložit" />
}

注意：Html.BeginForm()将获取其中的所有内容，并将其作为表单数据提交给指定为参数的控制器操作。

ASP.NET按钮单击事件

2 个答案: