blocks|key|2564509|text|ASP.NET有一个TextBox控件就可以做到这一点。所有带有服务器“runat=”的项目都可以通过服务器端代码访问。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2564510|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.textbox.aspx^0|A|7|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

ASP.NET has a <a href="http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.textbox.aspx" rel="nofollow">TextBox</a> control that does just this. All items with runat="server" are accessible through server-side code.

blocks|key|2564529|text|我假设你使用webforms。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2564530|最简单的事情是制作一个只有一个输入框的webform+(<asp:textbox+runat="server"+id="inputfield"+/>)。添加一个带有onclick事件的按钮(<asp:button+runat="server"+id="button"+onclick="OnClick"+/>。在onclick+eventhandler中，您可以对值做一些操作。|offset|length|style|CODE|2564531|protected+void+OnClick(object+sender,+EventArgs+args){
++string+input+=+inputfield.Text;
++//+do+something
}|code-block|syntax|javascript|2564532|entityMap^0|0|S|1A|2N|1N|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@$D|Q|E|R|F|G]|$D|S|E|T|F|G]]|9|@]|A|$]]|$1|H|3|I|5|J|7|U|8|@]|9|@]|A|$K|L]]|$1|M|3|-4|5|6|7|V|8|@]|9|@]|A|$]]]|N|$]]

I'm assuming you use webforms.

The most simple thing is to make a webform with one input box (<code>&lt;asp:textbox runat="server" id="inputfield" /&gt;</code>). Add a button with an onclick event (<code>&lt;asp:button runat="server" id="button" onclick="OnClick" /&gt;</code>. In the onclick eventhandler you do something with the value.

<pre><code>protected void OnClick(object sender, EventArgs args){
 string input = inputfield.Text;
 // do something
}
</code></pre>

blocks|key|661693|text|type|unstyled|depth|inlineStyleRanges|entityRanges|data|661694|当我在代码中像这样调用它时，它应该会弹出来|blockquote|661695|661696|661697|这到底是什么时候？请记住，web开发与应用程序开发的脱节本质是有根本区别的。在网页在浏览器中呈现之前，您的所有服务器端C#代码都已经执行完毕。那么你打算什么时候调用这个代码呢？另外，您将如何将数据传递回服务器？表格邮寄？AJAX调用？|661698|如果你想让它“弹出”并用AJAX回帖，我推荐jQuery+UI+Dialog作为实际的弹出窗口。然后，在它的close事件上，您可以对服务器进行AJAX调用以发布数据。|offset|length|style|CODE|661699|entityMap|0|LINK|mutability|MUTABLE|url|http://jqueryui.com/demos/dialog/^0|0|0|0|0|0|1I|5|M|G|0|0^^$0|@$1|2|3|-4|4|5|6|V|7|@]|8|@]|9|$]]|$1|A|3|B|4|C|6|W|7|@]|8|@]|9|$]]|$1|D|3|-4|4|5|6|X|7|@]|8|@]|9|$]]|$1|E|3|-4|4|5|6|Y|7|@]|8|@]|9|$]]|$1|F|3|G|4|5|6|Z|7|@]|8|@]|9|$]]|$1|H|3|I|4|5|6|10|7|@$J|11|K|12|L|M]]|8|@$J|13|K|14|1|15]]|9|$]]|$1|N|3|-4|4|5|6|16|7|@]|8|@]|9|$]]]|O|$P|$4|Q|R|S|9|$T|U]]]]

<blockquote>
 It should pop up, when i call it in the code like that
</blockquote>

And when exactly is this? Keep in mind that there's a fundamental difference between the disconnected nature of web development vs. application development. All of your server-side C# code has already finished executing before the web page renders in the browser. So when are you going to call this code? Also, how are you going to pass the data back to the server? A form post? An AJAX call?

If you want it to "pop up" and to post back with AJAX, I recommend the <a href="http://jqueryui.com/demos/dialog/" rel="nofollow">jQuery UI Dialog</a> as the actual pop-up. Then on its <code>close</code> event you can make the AJAX call to the server to post the data.

blocks|key|2564609|text|在我看来，您正在寻找的行为是获得一个带有文本框的弹出窗口，供用户输入值并单击ok。是那么回事吗？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2564610|您说得对，使用web应用程序会更复杂。在windows应用程序中，每当您运行C#代码时，无论发生什么，都会在那个时刻发生。这很简单。然而，在web应用程序中，所有的C#甚至在页面呈现在浏览器中之前就已经运行了。因此，web表单中的C#不能真正弹出窗口。|2564611|为了获得弹出窗口，您需要使用JavaScript来执行此操作。popup中的textbox应该是一个<asp:Textbox>控件。如果您对.NET控件最感兴趣，则可以使用Ajax+Control+Toolkit。如果你对jQuery感到满意，你应该去看看jQuery+UI。|offset|length|style|CODE|2564612|entityMap|0|LINK|mutability|MUTABLE|url|http://www.asp.net/ajax/ajaxcontroltoolkit/samples/|1|http://jqueryui.com/^0|0|0|1E|D|2E|K|0|3K|9|1|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|U|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|V|8|@$F|W|G|X|H|I]]|9|@$F|Y|G|Z|1|10]|$F|11|G|12|1|13]]|A|$]]|$1|J|3|-4|5|6|7|14|8|@]|9|@]|A|$]]]|K|$L|$5|M|N|O|A|$P|Q]]|R|$5|M|N|O|A|$P|S]]]]

It sounds to me like the behavior you are looking for is to get a popup window with a text box for the user to enter a value and click ok. Is that right?

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 <code>&lt;asp:Textbox&gt;</code> control. You can use the <a href="http://www.asp.net/ajax/ajaxcontroltoolkit/samples/" rel="nofollow">Ajax Control Toolkit</a> if youre most comfortable with .NET controls. If youre comforatble with jQuery, you should check out <a href="http://jqueryui.com/" rel="nofollow">jQuery UI</a>.

blocks|key|661803|text|如果您正在为将获得用户输入的弹出窗口寻找简单的解决方案，我建议您查看JQuery的对话框小部件。特别是模态表单，这里有一个指向更多信息的链接：http://jqueryui.com/demos/dialog/#modal-form|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|661804|entityMap|0|LINK|mutability|MUTABLE|url|http://jqueryui.com/demos/dialog/#modal-form^0|1Z|18|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

If you are looking for a simple solution for a POPUP that will get user input, I recomend checking out JQuery's dialog widget. In particular the modal form, here is a link to some more information: <a href="http://jqueryui.com/demos/dialog/#modal-form" rel="nofollow">http://jqueryui.com/demos/dialog/#modal-form</a>

blocks|key|4356460|text|++public+class+InputBox
++++++++{
++++++++++++public+static+DialogResult+Show(string+title,+string+promptText,+ref+string+value)
++++++++++++{
++++++++++++++++return+Show(title,+promptText,+ref+value,+null);
++++++++++++}




//Fuction


++++++++++++public+static+DialogResult+Show(string+title,+string+promptText,+ref+string+value,
++++++++++++++++++++++++++++++++++++++++++++InputBoxValidation+validation)
++++++++++++{
++++++++++++++++Form+form+=+new+Form();
++++++++++++++++Label+label+=+new+Label();
++++++++++++++++TextBox+textBox+=+new+TextBox();
++++++++++++++++Button+buttonOk+=+new+Button();
++++++++++++++++Button+buttonCancel+=+new+Button();

++++++++++++++++form.Text+=+title;
++++++++++++++++label.Text+=+promptText;
++++++++++++++++textBox.Text+=+value;

++++++++++++++++buttonOk.Text+=+"OK";
++++++++++++++++buttonCancel.Text+=+"Cancel";
++++++++++++++++buttonOk.DialogResult+=+DialogResult.OK;
++++++++++++++++buttonCancel.DialogResult+=+DialogResult.Cancel;

++++++++++++++++label.SetBounds(9,+20,+372,+13);
++++++++++++++++textBox.SetBounds(12,+36,+372,+20);
++++++++++++++++buttonOk.SetBounds(228,+72,+75,+23);
++++++++++++++++buttonCancel.SetBounds(309,+72,+75,+23);

++++++++++++++++label.AutoSize+=+true;
++++++++++++++++textBox.Anchor+=+textBox.Anchor+%7C+AnchorStyles.Right;
++++++++++++++++buttonOk.Anchor+=+AnchorStyles.Bottom+%7C+AnchorStyles.Right;
++++++++++++++++buttonCancel.Anchor+=+AnchorStyles.Bottom+%7C+AnchorStyles.Right;

++++++++++++++++form.ClientSize+=+new+Size(396,+107);
++++++++++++++++form.Controls.AddRange(new+Control[]+{+label,+textBox,+buttonOk,+buttonCancel+});
++++++++++++++++form.ClientSize+=+new+Size(Math.Max(300,+label.Right+%2B+10),+form.ClientSize.Height);
++++++++++++++++form.FormBorderStyle+=+FormBorderStyle.FixedDialog;
++++++++++++++++form.StartPosition+=+FormStartPosition.CenterScreen;
++++++++++++++++form.MinimizeBox+=+false;
++++++++++++++++form.MaximizeBox+=+false;
++++++++++++++++form.AcceptButton+=+buttonOk;
++++++++++++++++form.CancelButton+=+buttonCancel;
++++++++++++++++if+(validation+!=+null)
++++++++++++++++{
++++++++++++++++++++form.FormClosing+%2B=+delegate(object+sender,+FormClosingEventArgs+e)
++++++++++++++++++++{
++++++++++++++++++++++++if+(form.DialogResult+==+DialogResult.OK)
++++++++++++++++++++++++{
++++++++++++++++++++++++++++string+errorText+=+validation(textBox.Text);
++++++++++++++++++++++++++++if+(e.Cancel+=+(errorText+!=+""))
++++++++++++++++++++++++++++{
++++++++++++++++++++++++++++++++MessageBox.Show(form,+errorText,+"Validation+Error",
++++++++++++++++++++++++++++++++++++++++++++++++MessageBoxButtons.OK,+MessageBoxIcon.Error);
++++++++++++++++++++++++++++++++textBox.Focus();
++++++++++++++++++++++++++++}
++++++++++++++++++++++++}
++++++++++++++++++++};
++++++++++++++++}
++++++++++++++++DialogResult+dialogResult+=+form.ShowDialog();
++++++++++++++++value+=+textBox.Text;
++++++++++++++++return+dialogResult;
++++++++++++}
++++++++}
++++++++public+delegate+string+InputBoxValidation(string+errorMessage);





















private+void+button_updations_Click(object+sender,+EventArgs+e)
++++++++{

++++++++++++InputBoxValidation+validation+=+delegate(string+val)
++++++++++++{
++++++++++++++++if+(val+==+"")
++++++++++++++++++++return+"Value+cannot+be+empty.";
++++++++++++++++if+(!(new+Regex(@"%5E[a-zA-Z0-9_\-\.]%2B@[a-zA-Z0-9_\-\.]%2B\.[a-zA-Z]{2,}$")).IsMatch(val))
++++++++++++++++++++return+"Email+address+is+not+valid.";
++++++++++++++++return+"";
++++++++++++};

++++++++++++string+value+=+"";
++++++++++++if+(InputBox.Show("Enter+your+email+address",+"Email+address:",+ref+value,+validation)+==+DialogResult.OK)
++++++++++++{

++++++++++++++++if+(value+==+"thazime7@gmail.com")
++++++++++++++++{
++++++++++++++++++++dataGridView1.Visible+=+true;
++++++++++++++++++++button_delete.Visible+=+true;
++++++++++++++++++++button1.Visible+=+true;
++++++++++++++++++++button_show.Visible+=+true;
++++++++++++++++++++label6.Visible+=+true;
++++++++++++++++++++label4.Visible+=+true;
++++++++++++++++++++label5.Visible+=+true;
++++++++++++++++++++textBox_uemail.Visible+=+true;
++++++++++++++++++++textBox_uname.Visible+=+true;
++++++++++++++++++++textBox_upassword.Visible+=+true;
++++++++++++++++++++textBox_delete.Visible+=+true;
++++++++++++++++++++button_deleteTable.Visible+=+true;

++++++++++++++++++++button_updatep.Visible+=+true;
++++++++++++++++++++textBox_updateall.Visible+=+true;
++++++++++++++++}
++++++++++++++++MessageBox.Show(value);
++++++++++++}
++++++++++++else
++++++++++++{
++++++++++++++++MessageBox.Show("You+are+not+authenticated");





++++++++++++}
++++++++}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|4356461|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code> public class InputBox
 {
 public static DialogResult Show(string title, string promptText, ref string value)
 {
 return Show(title, promptText, ref value, null);
 }




//Fuction


 public static DialogResult Show(string title, string promptText, ref string value,
 InputBoxValidation validation)
 {
 Form form = new Form();
 Label label = new Label();
 TextBox textBox = new TextBox();
 Button buttonOk = new Button();
 Button buttonCancel = new Button();

 form.Text = title;
 label.Text = promptText;
 textBox.Text = value;

 buttonOk.Text = "OK";
 buttonCancel.Text = "Cancel";
 buttonOk.DialogResult = DialogResult.OK;
 buttonCancel.DialogResult = DialogResult.Cancel;

 label.SetBounds(9, 20, 372, 13);
 textBox.SetBounds(12, 36, 372, 20);
 buttonOk.SetBounds(228, 72, 75, 23);
 buttonCancel.SetBounds(309, 72, 75, 23);

 label.AutoSize = true;
 textBox.Anchor = textBox.Anchor | AnchorStyles.Right;
 buttonOk.Anchor = AnchorStyles.Bottom | AnchorStyles.Right;
 buttonCancel.Anchor = AnchorStyles.Bottom | AnchorStyles.Right;

 form.ClientSize = new Size(396, 107);
 form.Controls.AddRange(new Control[] { label, textBox, buttonOk, buttonCancel });
 form.ClientSize = new Size(Math.Max(300, label.Right + 10), form.ClientSize.Height);
 form.FormBorderStyle = FormBorderStyle.FixedDialog;
 form.StartPosition = FormStartPosition.CenterScreen;
 form.MinimizeBox = false;
 form.MaximizeBox = false;
 form.AcceptButton = buttonOk;
 form.CancelButton = buttonCancel;
 if (validation != null)
 {
 form.FormClosing += delegate(object sender, FormClosingEventArgs e)
 {
 if (form.DialogResult == DialogResult.OK)
 {
 string errorText = validation(textBox.Text);
 if (e.Cancel = (errorText != ""))
 {
 MessageBox.Show(form, errorText, "Validation Error",
 MessageBoxButtons.OK, MessageBoxIcon.Error);
 textBox.Focus();
 }
 }
 };
 }
 DialogResult dialogResult = form.ShowDialog();
 value = textBox.Text;
 return dialogResult;
 }
 }
 public delegate string InputBoxValidation(string errorMessage);





















private void button_updations_Click(object sender, EventArgs e)
 {

 InputBoxValidation validation = delegate(string val)
 {
 if (val == "")
 return "Value cannot be empty.";
 if (!(new Regex(@"^[a-zA-Z0-9_\-\.]+@[a-zA-Z0-9_\-\.]+\.[a-zA-Z]{2,}$")).IsMatch(val))
 return "Email address is not valid.";
 return "";
 };

 string value = "";
 if (InputBox.Show("Enter your email address", "Email address:", ref value, validation) == DialogResult.OK)
 {

 if (value == "thazime7@gmail.com")
 {
 dataGridView1.Visible = true;
 button_delete.Visible = true;
 button1.Visible = true;
 button_show.Visible = true;
 label6.Visible = true;
 label4.Visible = true;
 label5.Visible = true;
 textBox_uemail.Visible = true;
 textBox_uname.Visible = true;
 textBox_upassword.Visible = true;
 textBox_delete.Visible = true;
 button_deleteTable.Visible = true;

 button_updatep.Visible = true;
 textBox_updateall.Visible = true;
 }
 MessageBox.Show(value);
 }
 else
 {
 MessageBox.Show("You are not authenticated");





 }
 }
</code></pre>

I need to create a simple input box on my website in C#.
It should pop up, when i call it in the code like that

<pre><code>String input = InputBox("Name the file"); 
</code></pre>

and then I need the use string the users enters later in the code
In a .net application, it is pretty easy to accomplish, but how can i make it work in a web application? I think it should be possible with ajax, but it seems pretty complicated for such a (seemingly) trivial thing.
Is there any kind of library or framework, that I can use for this right away?

thanks in advance

input box in asp.net c#

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

文章

问答

视频

学习中心

腾讯云实验室

直播

竞赛

腾讯云代码分析专区

腾讯iOA零信任安全管理系统专区

腾讯云架构师技术同盟交流圈

腾讯云数据库专区

腾讯云顾问专区

腾讯云原生专区

腾讯混元专区

腾讯云TCE专区

腾讯云Lighthouse专区

腾讯云HAI专区

腾讯云Edgeone专区

腾讯云存储专区

腾讯云智能专区

腾讯轻联专区 

腾讯云开发专区

TAPD专区

腾讯轻量云游戏服专区

腾讯云最具价值专家

腾讯云架构师技术同盟

腾讯云创作之星

腾讯云开发者先锋

腾讯云代码助手

云原生构建

TAPD 敏捷项目管理

Cloud Studio

SDK中心

API中心

命令行工具

涵盖代码开发、场景应用、自动测试全流程，助你从零构建专属AI助手

一站式MCP教程库，解锁AI应用新玩法

我需要在我的网站上用C#创建一个简单的输入框。当我像这样在代码中调用它时，它应该会弹出String input = InputBox("Name the file"); 然后我需要用户稍后在.net应用程序的代码中输入的使用字符串，这很容易实现，但如何使其在web应用程序中工作呢？我认为使用ajax应该是可能的，但对于...

问asp.net c#中的输入框
EN

Stack Overflow用户

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问asp.net c#中的输入框EN