blocks|key|1008229|text|您是否在页面上使用ScriptManager？如果是这样，请尝试执行以下操作：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1008230|public+void+SetInputFocus()
{
++++TextBox+tbox+=+this.loginForm.FindControl("UserName")+as+TextBox;
++++if+(tbox+!=+null)
++++{
+++++++ScriptManager.GetCurrent(this.Page).SetFocus(tbox);
++++}
}|code-block|syntax|javascript|1008231|更新:以前从未使用过多视图，但尝试一下：|1008232|protected+void+MultiView1_ActiveViewChanged(object+sender,+EventArgs+e)
{
+++SetInputFocus();
}|1008233|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|$]]

<p>Are you using a ScriptManager on the Page? If so, try the following:</p>

<pre><code>public void SetInputFocus()
{
    TextBox tbox = this.loginForm.FindControl("UserName") as TextBox;
    if (tbox != null)
    {
       ScriptManager.GetCurrent(this.Page).SetFocus(tbox);
    }
}
</code></pre>

<p>Update: Never used a multiview before, but try this:</p>

<pre><code>protected void MultiView1_ActiveViewChanged(object sender, EventArgs e)
{
   SetInputFocus();
}
</code></pre>


blocks|key|1008447|text|我使用的是Page.Form.DefaultFocus，它工作正常：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1008448|//+inside+page_load,+LoginUser+is+the+Login+control
Page.Form.DefaultFocus+=+LoginUser.FindControl("Username").ClientID;|code-block|syntax|javascript|1008449|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|$]]

<p>I'm using Page.Form.DefaultFocus and it works:</p>

<pre><code>// inside page_load, LoginUser is the Login control
Page.Form.DefaultFocus = LoginUser.FindControl("Username").ClientID;
</code></pre>


blocks|key|1222712|text|protected+void+Page_Load(object+sender,+EventArgs+e)
{
++++SetFocus(LoginCntl.FindControl("UserName"));
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1222713|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>protected void Page_Load(object sender, EventArgs e)
{
    SetFocus(LoginCntl.FindControl("UserName"));
}
</code></pre>


blocks|key|1008289|text|您可以尝试执行以下操作：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1008290|-Register两个脚本(一个用来创建一个函数，在页面显示时关注你的文本框，第二个用来注册文本框的id+)|1008291|this.Page.ClientScript.RegisterStartupScript(this.GetType(),+"on_load",+
++++++++++++++++"<script>function+window_onload()+\n+{+\n+if+(typeof(idLoginTextBox)+==+\"undefined\"+%7C%7C+idLoginTextBox+==+null)+\n+return;+\n+idLoginTextBox.focus();\n+}+\n+window.onload+=+window_onload;+</script>");

this.Page.ClientScript.RegisterStartupScript(this.GetType(),+"Focus",+String.Format("<script>var+idLoginTextBox=document.getElementById(\"{0}\").focus();</script>",+this.loginForm.ClientID));+++++++++++++|code-block|syntax|javascript|1008292|因此，您的代码中应该包含以下内容：|1008293|++++++<script>
++++++++++function+window_onload()
++++++++++{
++++++++++++if+(typeof(idLoginTextBox)+==+"undefined"+%7C%7C+idLoginTextBox+==+null)
++++++++++++++++return;+++++
++++++++++++idLoginTextBox.focus();
++++++++}
++++++++window.onload+=+window_onload;+++++
++++++</script>+++



<script>
++++++++var+idLoginTextBox=document.getElementById("ctl00_LoginTextBox").focus();
++</script>|1008294|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Q|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

<p>You may try to do the following:</p>

<p>-Register two scripts (one to create a function to focus on your texbox when page is displayed, second to register id of the textbox)</p>

<pre><code>this.Page.ClientScript.RegisterStartupScript(this.GetType(), "on_load", 
                "&lt;script&gt;function window_onload() \n { \n if (typeof(idLoginTextBox) == \"undefined\" || idLoginTextBox == null) \n return; \n idLoginTextBox.focus();\n } \n window.onload = window_onload; &lt;/script&gt;");

this.Page.ClientScript.RegisterStartupScript(this.GetType(), "Focus", String.Format("&lt;script&gt;var idLoginTextBox=document.getElementById(\"{0}\").focus();&lt;/script&gt;", this.loginForm.ClientID));             
</code></pre>

<p>As the result you should get the following in your code:</p>

<pre><code>      &lt;script&gt;
          function window_onload()
          {
            if (typeof(idLoginTextBox) == "undefined" || idLoginTextBox == null)
                return;     
            idLoginTextBox.focus();
        }
        window.onload = window_onload;     
      &lt;/script&gt;   



&lt;script&gt;
        var idLoginTextBox=document.getElementById("ctl00_LoginTextBox").focus();
  &lt;/script&gt;
</code></pre>


blocks|key|1008412|text|我也一直在努力解决这个问题，我已经找到了一个解决方案，即使是使用深度嵌套的控件(比如AspDotNetStorefront，也称为.ASPDNSF使用)。请注意从Page_PreRender例程调用的以下代码。我知道我想要关注的TextBox的名称，所以我就调用了FocusNestedControl(Me,+"UserName")。我之所以在这里使用Me，是因为例程只需要控件的父级来获得焦点；无论是哪一个父级都无关紧要。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1008413|++++Public+Function+FocusNestedControl(ByVal+ParentControl+As+Control,+ByVal+ControlNameToFocus+As+String)+As+Control

++++++++If+ParentControl.HasControls+Then
++++++++++++For+Each+childCtrl+As+Control+In+ParentControl.Controls
++++++++++++++++Dim+goodCtrl+As+Control+=+FocusNestedControl(childCtrl,+ControlNameToFocus)
++++++++++++++++If+goodCtrl+IsNot+Nothing+Then
++++++++++++++++++++goodCtrl.Focus()
++++++++++++++++++++Return+goodCtrl
++++++++++++++++End+If
++++++++++++Next
++++++++Else
++++++++++++If+ParentControl.ID+=+ControlNameToFocus+Then
++++++++++++++++ParentControl.Focus()
++++++++++++++++Return+ParentControl
++++++++++++End+If
++++++++End+If

++++++++Return+Nothing
++++End+Function|code-block|syntax|javascript|1008414|entityMap^0|29|E|3O|Y|4W|2|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]|$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|U|8|@]|D|@]|E|$]]]|L|$]]

<p>I've been struggling with this too and I've found a solution that seems to work very well even with deeply nested controls (like AspDotNetStorefront a.k.a. ASPDNSF uses). Note the following code called from the <code>Page_PreRender</code> routine. I knew the name of the TextBox I wanted to give focus to and so I just called <code>FocusNestedControl(Me, "UserName")</code>. I just used <code>Me</code> here because all the routine needs is a parent of the control to get focus; it doesn't matter which parent.</p>

<pre><code>    Public Function FocusNestedControl(ByVal ParentControl As Control, ByVal ControlNameToFocus As String) As Control

        If ParentControl.HasControls Then
            For Each childCtrl As Control In ParentControl.Controls
                Dim goodCtrl As Control = FocusNestedControl(childCtrl, ControlNameToFocus)
                If goodCtrl IsNot Nothing Then
                    goodCtrl.Focus()
                    Return goodCtrl
                End If
            Next
        Else
            If ParentControl.ID = ControlNameToFocus Then
                ParentControl.Focus()
                Return ParentControl
            End If
        End If

        Return Nothing
    End Function
</code></pre>


blocks|key|1222882|text|您可以直接在LoginControl上设置焦点，它会自动将焦点设置在控件的第一个字段上。在您的案例中：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1222883|this.loginForm.Focus();|code-block|syntax|javascript|1222884|有关MSDN的更多信息：How+to:+Set+Focus+on+ASP.NET+Web+Server+Controls|offset|length|1222885|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/ms178232.aspx^0|0|0|C|1C|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@$I|V|J|W|1|X]]|A|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

<p>You can set focus directly on LoginControl and it will automatically set focus on first field in control. In your case:</p>

<pre><code>this.loginForm.Focus();
</code></pre>

<p>More info on MSDN: <a href="http://msdn.microsoft.com/en-us/library/ms178232.aspx" rel="nofollow">How to: Set Focus on ASP.NET Web Server Controls</a></p>


blocks|key|1222899|text|protected+override+void+OnPreRender(EventArgs+e)
{
++++++++base.OnPreRender(e);
++++++++Login.FindControl("UserName").Focus();

}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1222900|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>protected override void OnPreRender(EventArgs e)
{
        base.OnPreRender(e);
        Login.FindControl("UserName").Focus();

}
</code></pre>


blocks|key|1222960|text|当我将登录控件移动到自定义控件并试图在OnInit()方法中查找UsernameTextBox时，我的问题就出现了。控件的OnInit在页面的OnInit之前执行，这就是为什么没有创建表单控件的原因。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1222961|我将对UsernameTextBox的调用移到了OnLoad函数中，它可以正常工作。|1222962|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

<p>My problem arrized when i moved login control to a custom control and tried to find UsernameTextBox at the OnInit() method.
OnInit of a control is executed before OnInit of Page and this is why no Form control have been created. </p>

<p>I moved the call to UsernameTextBox to the OnLoad function and it worked correctly.</p>


blocks|key|1222992|text|上面的答案对我都不起作用，所以我简单地试了一下：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1222993|protected+void+Page_Load(object+sender,+EventArgs+e)+{
++++//+This+works+for+me
++++TxtMyTextBoxName.Focus();
}|code-block|syntax|javascript|1222994|..。它成功了！|1222995|使用如下定义的ASP+TextBox：|1222996|<asp:TextBox+ID="TxtMyTextBoxName"+type="search"+runat="server"></asp:TextBox>|1222997|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|D|7|S|8|@]|9|@]|A|$E|F]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

<p>None of the above answers worked for me, so I simply tried:</p>

<pre><code>protected void Page_Load(object sender, EventArgs e) {
    // This works for me
    TxtMyTextBoxName.Focus();
}
</code></pre>

<p>... and it worked!<br/>
With an ASP TextBox defined as:</p>

<pre><code>&lt;asp:TextBox ID="TxtMyTextBoxName" type="search" runat="server"&gt;&lt;/asp:TextBox&gt;
</code></pre>


blocks|key|1008653|text|在ASP.NET上，您必须将文本框放入此代码中|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1008654|<form+id="WHATEVERYOUWANT"+runat="server"+method="post">
+<div>
+++
+</div>
</form>|code-block|syntax|javascript|1008655|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|$]]

<p>You must put your textbox inside this code on  ASP.NET</p>
<pre><code>&lt;form id=&quot;WHATEVERYOUWANT&quot; runat=&quot;server&quot; method=&quot;post&quot;&gt;
 &lt;div&gt;
  &lt;!-- Put your code here--&gt; 
 &lt;/div&gt;
&lt;/form&gt;
</code></pre>


<p>I am trying to set the focus to the user name TextBox which is inside an ASP.NET Login control.</p>

<p>I have tried to do this a couple of ways but none seem to be working.  The page is loading but not going to the control.</p>

<p>Here is the code I've tried.</p>

<pre><code>SetFocus(this.loginForm.FindControl("UserName"));
</code></pre>

<p>And</p>

<pre><code>TextBox tbox = (TextBox)this.loginForm.FindControl("UserName");
if (tbox != null)
{    
  tbox.Focus();
} // if
</code></pre>


Set focus to textbox in ASP.NET Login control on page load

我正在尝试将焦点设置为ASP.NET Login控件中的用户名TextBox。我尝试过几种方法，但似乎都不起作用。页面正在加载，但不会转到控件。下面是我尝试过的代码。SetFocus(this.loginForm.FindControl("UserName"));和TextBox tbox = (TextBox)this.loginForm.FindControl("UserName");if (

问在页面加载时将焦点设置到ASP.NET登录控件中的textbox
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