如何在运行时将ASP.net和HTML控件添加到页面？

Question

I have an ASP.net WebForm. 我有一个ASP.net WebForm。 The markup is like: 标记类似于：

<div>
    <input type="text"  id="input" runat="server" value=" " />
    <asp:Button Text="send" OnClick="btnsend_Click" ID="btnsend" runat="server" />
</div>

This HTML is generated at runtime . 该HTML在运行时生成。 The events are defined in the code behind file. 这些事件在文件后面的代码中定义。 I need to add these controls at runtime. 我需要在运行时添加这些控件。 I tried to use the Literal-Control but the controls are working just like HTML Controls and not like ASP.net Controls. 我尝试使用Literal-Control，但是这些控件就像HTML控件一样工作，而不像ASP.net控件那样工作。

Answer 1

EDIT: 编辑：

Note: The Project type should be Website, not a web Application. 注意：项目类型应该是网站，而不是Web应用程序。 Web application won't support on demand compilation where website yes, it is. Web应用程序不支持按需编译，而网站是。

If I understood currectly, you want to take the Markup from User which contains even asp.net controls and scriplets too. 如果我的理解正确，您想从User中获取标记，该标记甚至还包含asp.net控件和Scriplets。

if this is the case, Follow below steps: 如果是这种情况，请执行以下步骤：

Create a dummy .ascx control file, like DynamicMarkup.ascx with empty content 创建一个空的.ascx控制文件，例如DynamicMarkup.ascx，其内容为空
Add this user control to the page (xxxx.aspx) where you want to show this control statically so it registered to the page 将此用户控件添加到要静态显示此控件的页面（xxxx.aspx），以便将其注册到该页面

  <%@ Register src="~/DynamicMarkup.ascx" tagname="DynamicMarkup" tagprefix="MyASP" %> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title></title> </head> <body> <form id="form1" runat="server"> <div> <asp:PlaceHolder runat="server" ID="DynamicMarkupContainer" ></asp:PlaceHolder> </div> </form> </body> </html>

Write user input markup (may be get from database based on your criteria) to the DynamicMarkup.ascx file in page OnInit of the page (xxxx.aspx) And the create object of this DynamicMarkup 将用户输入标记（可能根据您的条件从数据库中获取）写入页面（xxxx.aspx）的页面OnInit中的DynamicMarkup.ascx文件以及此DynamicMarkup的create对象

DynamicMarkup dynamicMarkup = LoadControl("~/DynamicMarkup.ascx") as DynamicMarkup; DynamicMarkup dynamicMarkup = LoadControl（“〜/ DynamicMarkup.ascx”）作为DynamicMarkup;

DynamicMarkupContainer.Controls.Add(ucSimpleControl); DynamicMarkupContainer.Controls.Add（ucSimpleControl）;

I have not tested this approach, Just give a thought, With this you may get some session overwriting issue which you need handle. 我还没有测试这种方法，请考虑一下，这样您可能会遇到一些会话覆盖问题，需要解决。

Hope this will help!! 希望这会有所帮助！

OLD: is this the one that you are expecting? 老：这是您所期望的吗？ TextBox, and Button controls are available in System.Web.UI.WebControls namespace. System.Web.UI.WebControls命名空间中提供了TextBox和Button控件。

 void Page_Load(Object sender, EventArgs e)
 { 
    TextBox input = new TextBox();
    input.Id ="input";
    this.PlaceHolder.Controls.Add(input);

    Button btnSend=new Button();
    btnSend.Id ="btnSend";
    btnSend.Text="Send";
    btnSend.Click += new EventHandler(btnSend_Click);
    this.PlaceHolder.Controls.Add(btnSend);
}
void btnSend_Click(object sender, EventArgs e)
{
      // throw new NotImplementedException();
}

Answer 2

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <asp:PlaceHolder ID="phHolder" runat="server"></asp:PlaceHolder>
    </form>
</body>
</html>

code behind : 后面的代码：

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;

public partial class Default2 : System.Web.UI.Page
{
    protected void Page_Init()
    {
        GenerateContorls();
    }

    protected void Page_Load(object sender, EventArgs e)
    {

    }

    private void GenerateContorls()
    {
        TextBox newTxt = new TextBox() { ID = "txtsend" };

        Button newBtn = new Button() { Text = "Send", ID = "btnsend" };
        newBtn.Click += btnsend_Click;

        phHolder.Controls.Add(newTxt);
        phHolder.Controls.Add(newBtn);
    }

    protected void btnsend_Click(object sender, EventArgs e)
    {
        TextBox txt = (TextBox)this.FindControl("txtsend");

        //your code
    }
}

hope it helps 希望能帮助到你

如何在运行时将ASP.net和HTML控件添加到页面？

问题描述

2 个解决方案

解决方案1
2 2014-11-15 10:10:03

解决方案2
0 2014-11-15 10:17:11

如何在运行时将ASP.net和HTML控件添加到页面？

问题描述

2 个解决方案

解决方案1 2 2014-11-15 10:10:03

解决方案2 0 2014-11-15 10:17:11

解决方案1
2 2014-11-15 10:10:03

解决方案2
0 2014-11-15 10:17:11