如何在asp.net中创建输入框 [英] how to create inputbox in asp.net

问题描述

当我单击asp.net中的按钮时，我想创建输入框.我正在使用该inputbox值到CS文件.怎么做?请帮助我

I want to create input box when i click the button in asp.net. And I am using that inputbox value to CS file. How to do it? please help me

推荐答案

您好devausha，

尝试以下代码:

Hi devausha,

Try the following code:

protected void Button1_Click1(object sender, EventArgs e)
    {
        string script = "<script language=''javascript''>alert(''message!'')"+"</script>";
        Page.RegisterStartupScript("JavaScript",script);

        HtmlInputText input = new HtmlInputText();
        input.ID = "i1";
        input.Value = "123";
        form1.Controls.Add(input );
       
    }

您说对了，因为它对于Web应用程序来说更加复杂.在Windows应用程序中，无论何时运行C#代码，任何事情都会在那一刻发生.这很简单.但是，在Web应用程序中，所有C#都在页面甚至在浏览器中呈现之前运行.因此，Web窗体中的C#不能真正弹出一个窗口.

为了获得一个弹出窗口，您需要使用JavaScript来实现.弹出窗口中的文本框应为<asp:textbox>控件.您可以使用 Ajax控制工具包 [ jQuery UI [

You''re right in saying that it is more complicated with a web app. In a windows app, whenever you run the C# code, whatever happens, happens at that moment. It''s pretty straightforward. However, in a web app, all of the C# runs before the page is even rendered in the browser. Therefore, C# in web forms can''t really pop up a window.

In order to get a popup, you''ll need to do that with JavaScript. The textbox inside the popup should be an <asp:textbox> control. You can use the Ajax Control Toolkit[^] if youre most comfortable with .NET controls. If youre comforatble with jQuery, you should check out jQuery UI[^].



--Amit

可以有不同的方法:
1.使用Javascript-您需要通过隐藏字段跟踪在文本框中插入的值
2.使用AJAX

在这里，看看这些:
MSDN:如何:以编程方式将控件添加到ASP.NET网页 [ ^ ]
如何使用Javascript动态创建文本框并在后面的代码中读取控件值 [ ^ ]
在ASP.NET中动态创建的控件 [

There can be different ways to do it:
1. using Javascript - you need to track the value inserted in textbox via hidden field
2. using AJAX

Here, have a look at these:
MSDN: How to: Add Controls to an ASP.NET Web Page Programmatically[^]
How To Create TextBox Dynamically using Javascript and Read Control Value In Code Behind[^]
Dynamically Created Controls in ASP.NET[^]

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