如何使用 runat = “server"在输入标签中? [英] How to use runat = "server" in input tag?

问题描述

我正在用 asp.net 编写.当我将 runat="server" 属性添加到我的输入标签时，它的值为空.当我删除 runat="server" 时，它可以正常工作.谁知道原因?

I'm writing in asp.net. When I add runat="server" property to my input tag, its value is null. When I remove runat="server" it works correctly. Who knows the reason?

我想从后面的代码中更改它的属性，这就是我编写 runat="server" 的原因.但是，该值为空.

I want change its property from code behind, that's why I wrote runat="server". However, the value is null.

protected void btnSaveChanges_Click(object sender, EventArgs e)
{
    string current_id = Session["Current_user"].ToString(); 
    string a = Request.Form["newusername"]; 
    string b = Request.Form["newpassword"]; 
    string c = Request.Form["rewpassword"];
}

控制代码:

<input type="text" name="newusername" placeholder="Enter Username" required="required" runat="server"/>

推荐答案

当你添加 runat="server" 并制作简单的 HTML 控件到 asp.net HTML 控件，然后 asp.net以不与同一页面上的其他 asp.net 控件冲突的方式呈现该控件的 id 和 name.

When you add runat="server" and make the simple HTML control to asp.net HTML control, then asp.net renders the id and the name of that control in a manner that does not conflict with other asp.net controls on the same page.

因此将输入更改为:(注意现在我添加了id，并删除了name！)

So change the input to: (note now I add id, and remove the name!)

<input type="text" id="newusername" placeholder="Enter Username" required="required" runat="server"/>

并使用像这样的帖子获取值:

and get the value using the post like this:

Request.Form[newusername.UniqueID]

或使用值:

newusername.value

要考虑的其他链接:访问控制客户端名称而不是 IDASP.NET

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