blocks|key|4632578|text|你能试试下面的内容吗？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4632579|TextBox+txt+=+divQtn.FindControl(txtID)+as+TextBox;+
string+txtData+=+txt.Text.ToString();|code-block|syntax|javascript|4632580|或者这应该是工作|4632581|String+sValue=Request.Form["ID+HERE"];|4632582|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Can you try following ? :

<pre><code>TextBox txt = divQtn.FindControl(txtID) as TextBox; 
string txtData = txt.Text.ToString();
</code></pre>

or that should be work

<pre><code>String sValue=Request.Form["ID HERE"];
</code></pre>

blocks|key|1311566|text|第二种选择是你可以像这样添加事件处理程序：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1311567|+TextBox+txt+=+new+TextBox();
++++//add+the+event+handler+here
++++txt.TextChanged+%2B=+new+EventHandler(System.EventHandler(this.txt_TextChanged));

string+yourtext;

private+void+txt_TextChanged(object+sender,+EventArgs+e)
{
++++yourText+=+(sender+as+TextBox).Text;
}|code-block|syntax|javascript|1311568|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

2nd option is u can add event handler like a that: 

<pre><code> TextBox txt = new TextBox();
 //add the event handler here
 txt.TextChanged += new EventHandler(System.EventHandler(this.txt_TextChanged));

string yourtext;

private void txt_TextChanged(object sender, EventArgs e)
{
 yourText = (sender as TextBox).Text;
}
</code></pre>

blocks|key|4632621|text|ASP.NET网页表单中的动态控件有点棘手。您需要在Page_Init+(或Page_Load)事件中用相同的id重新加载它们。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|4632622|<asp:PlaceHolder+runat="server"+ID="PlaceHolder1"></asp:PlaceHolder>
<asp:Button+runat="server"+ID="SubmitButton"+Text="Submit"+
+++OnClick="SubmitButton_Click"+/>|code-block|syntax|javascript|4632623|代码隐藏|4632624|protected+void+Page_Init(object+sender,+EventArgs+e)
{
++++CreateDynamicControls();
}

private+void+CreateDynamicControls()
{
++++for+(int+i+=+0;+i+<+5;+i%2B%2B)
++++{
++++++++TextBox+txt+=+new+TextBox();
++++++++txt.ID+=+"txt"+%2B+i;
++++++++PlaceHolder1.Controls.Add(txt);
++++}
}

protected+void+SubmitButton_Click(object+sender,+EventArgs+e)
{
++++IList<string>+data+=+new+List<string>();
++++for+(int+i+=+0;+i+<+5;+i%2B%2B)
++++{
++++++++string+txtID+=+"txt"+%2B+i;
++++++++TextBox+txt+=+(TextBox)PlaceHolder1.FindControl(txtID);
++++++++data.Add(txt.Text);
++++}
}|4632625|entityMap^0|Q|9|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|U|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|W|8|@]|D|@]|E|$]]]|P|$]]

Dynamic controls in ASP.NET Web Form are a little bit tricky. You will need to reload them back with same id inside Page_Init (or Page_Load) event.

<pre><code>&lt;asp:PlaceHolder runat="server" ID="PlaceHolder1"&gt;&lt;/asp:PlaceHolder&gt;
&lt;asp:Button runat="server" ID="SubmitButton" Text="Submit" 
 OnClick="SubmitButton_Click" /&gt;
</code></pre>

<h2>Code Behind</h2>

<pre><code>protected void Page_Init(object sender, EventArgs e)
{
 CreateDynamicControls();
}

private void CreateDynamicControls()
{
 for (int i = 0; i &lt; 5; i++)
 {
 TextBox txt = new TextBox();
 txt.ID = "txt" + i;
 PlaceHolder1.Controls.Add(txt);
 }
}

protected void SubmitButton_Click(object sender, EventArgs e)
{
 IList&lt;string&gt; data = new List&lt;string&gt;();
 for (int i = 0; i &lt; 5; i++)
 {
 string txtID = "txt" + i;
 TextBox txt = (TextBox)PlaceHolder1.FindControl(txtID);
 data.Add(txt.Text);
 }
}
</code></pre>

I created the dynamic textboxes and placed in div on Webpage. But I am unable to read the text in the created textboxes.
For Creating I used below code (Sample).
This is my design code in .aspx

<pre><code>&lt;div ID="divQtn" runat="server"&gt;

for(int i=0;i&lt;5;i++)
{
 TextBox txt = new TextBox();
 txt.ID="txt"+i.ToString();
 txt.Attributes.Add("runat","server");
 divQtn.Controls.Add(txt);
}
</code></pre>

For Reading text from textbox:

<pre><code>for(int i=0;i&lt;5;i++)
{
 string txtID = "txt"+i.ToString();
 TextBox txt = (TextBox)divQtn.FindControl(txtID);
 string txtData = txt.Text;
}
</code></pre>

I am getting txt as Null.

Unable to get dynamic textbox text in 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。

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我创建了动态文本框，并将其放置在网页的div中。但我无法阅读创建的文本框中的文本。为了创建，我使用了下面的代码(示例)。这是我用.aspx编写的设计代码<div ID="divQtn" runat="server">for(int i=0;i<5;i++){ TextBox txt = new TextBox(); t...

问无法在C#中获取动态文本框文本
EN

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