blocks|key|5116964|text|你有没有试过把这个放到你的page_load里？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5116965|txtBoxStartTime.Attributes["type"]+=+"Time"|code-block|syntax|javascript|5116966|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|$]]

Have you tried placing this in your page_load?

<pre><code>txtBoxStartTime.Attributes["type"] = "Time"
</code></pre>

blocks|key|5117063|text|TextBoxMode+Enumeration|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|5117064|5117065|+SingleLine模式将TextBox控件显示为单行。如果用户输入的文本超出TextBox控件的实际大小，则文本将水平滚动。MultiLine模式根据TextBox属性显示行的高度，并允许在多行上输入数据。如果wrap属性设置为true，文本将自动换行。如果用户输入的文本超过TextBox的实际大小，则文本将相应地滚动，并显示滚动条。密码模式的行为类似于SingleLine模式，只是在TextBox控件中输入的所有字符都被屏蔽，并且不会保存在视图状态中。|blockquote|5117066|5117067|5117068|然后|5117069|输入其余选项对应于HTML5规范中|5117070|元素的类型属性值。|5117071|5117072|5117073|因此，textbox的服务器端行为没有任何变化，下面的代码按预期工作|5117074|标记|style|BOLD|5117075|<asp:TextBox+runat="server"+TextMode="Time"+ID="test"></asp:TextBox>
+++<asp:Button+runat="server"+ID="btn"+Text="ok"+/>|code-block|syntax|javascript|5117076|背后的C#代码|5117077|protected+void+Page_Load(object+sender,+EventArgs+e)
++++{
++++++string+value+=+test.Text;
++++}|5117078|​|5117079|📷|atomic|5117080|5117081|5117082|5117083|5117084|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.textboxmode(v=vs.110).aspx|1|IMAGE|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/3dc535716082dd8d8ce172cee53d8420.png|imageAlt|2|https://ask.qcloudimg.com/http-save/yehe-900000/039569ac6e742a75d659c899857cfb37.png^0|0|N|0|0|0|0|0|0|0|0|0|0|0|0|0|2|0|0|3|4|0|0|0|1|0|0|1|0|1|1|0|0|1|0|0|1|0|0|1|0|1|2|0|0|1|0^^$0|@$1|2|3|4|5|6|7|1V|8|@]|9|@$A|1W|B|1X|1|1Y]]|C|$]]|$1|D|3|-4|5|6|7|1Z|8|@]|9|@]|C|$]]|$1|E|3|F|5|G|7|20|8|@]|9|@]|C|$]]|$1|H|3|-4|5|6|7|21|8|@]|9|@]|C|$]]|$1|I|3|-4|5|6|7|22|8|@]|9|@]|C|$]]|$1|J|3|K|5|6|7|23|8|@]|9|@]|C|$]]|$1|L|3|M|5|6|7|24|8|@]|9|@]|C|$]]|$1|N|3|O|5|G|7|25|8|@]|9|@]|C|$]]|$1|P|3|-4|5|6|7|26|8|@]|9|@]|C|$]]|$1|Q|3|-4|5|6|7|27|8|@]|9|@]|C|$]]|$1|R|3|S|5|6|7|28|8|@]|9|@]|C|$]]|$1|T|3|U|5|6|7|29|8|@$A|2A|B|2B|V|W]]|9|@]|C|$]]|$1|X|3|Y|5|Z|7|2C|8|@]|9|@]|C|$10|11]]|$1|12|3|13|5|6|7|2D|8|@$A|2E|B|2F|V|W]]|9|@]|C|$]]|$1|14|3|15|5|Z|7|2G|8|@]|9|@]|C|$10|11]]|$1|16|3|17|5|6|7|2H|8|@$A|2I|B|2J|V|W]]|9|@]|C|$]]|$1|18|3|19|5|1A|7|2K|8|@$A|2L|B|2M|V|W]]|9|@$A|2N|B|2O|1|2P]]|C|$]]|$1|1B|3|17|5|6|7|2Q|8|@$A|2R|B|2S|V|W]]|9|@]|C|$]]|$1|1C|3|17|5|6|7|2T|8|@$A|2U|B|2V|V|W]]|9|@]|C|$]]|$1|1D|3|19|5|1A|7|2W|8|@$A|2X|B|2Y|V|W]]|9|@$A|2Z|B|30|1|31]]|C|$]]|$1|1E|3|17|5|6|7|32|8|@$A|33|B|34|V|W]]|9|@]|C|$]]|$1|1F|3|-4|5|6|7|35|8|@]|9|@]|C|$]]]|1G|$1H|$5|1I|1J|1K|C|$1L|1M]]|1N|$5|1O|1J|1P|C|$1Q|1R|1S|-4]]|1T|$5|1O|1J|1P|C|$1Q|1U|1S|-4]]]]

<a href="http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.textboxmode(v=vs.110).aspx" rel="nofollow noreferrer">TextBoxMode Enumeration</a>

<blockquote>
 SingleLine mode displays the TextBox control as a single row. If the
 user enters text that exceeds the physical size of the TextBox
 control, the text will scroll horizontally. MultiLine mode displays
 the height of the TextBox based on the Rows property, and allows data
 entry on multiple lines. The text will automatically wrap if the Wrap
 property is set to true. If the user enters text that exceeds the
 physical size of the TextBox, the text will scroll accordingly and
 scroll bars will appear. The behavior of Password mode is similar to
 SingleLine mode except that all characters entered in the TextBox
 control are masked and are not saved in view state.
</blockquote>

and then

<blockquote>
 The remaining options correspond to type attribute values for the
 input element in the HTML5 specification.
</blockquote>

So there is not any change to server side behaviours of textbox, the following code works as expected

Markup

<pre><code>&lt;asp:TextBox runat="server" TextMode="Time" ID="test"&gt;&lt;/asp:TextBox&gt;
 &lt;asp:Button runat="server" ID="btn" Text="ok" /&gt;
</code></pre>

C# code behind

<pre><code>protected void Page_Load(object sender, EventArgs e)
 {
 string value = test.Text;
 }
</code></pre>

<img src="https://i.stack.imgur.com/juXsA.png" alt="enter image description here">

<img src="https://i.stack.imgur.com/57BGR.png" alt="enter image description here">

blocks|key|3002498|text|因此，为了得到答案，下面是我的Page.Load上的代码(用于测试)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3002499|​|3002500|📷|atomic|offset|length|3002501|你可以看到txtBoxStarTime.Text是没有价值的|3002502|3002503|3002504|3002505|对于我的情况，我在更新面板中有以下内容：|3002506|<asp:TextBox+runat="server"+ID="txtBoxStartTime"+TextMode="Time"+Width="102px"></asp:TextBox>


<asp:TextBox+runat="server"+ID="txtBoxEndTime"+TextMode="Time"+Width="102px"></asp:TextBox>


<asp:Button+CssClass="positive"+ID="btnOtherSendRequest"+runat="server"+Text="&nbsp;Send+Request"+ToolTip="The+selected+request+would+be+sent+to+X"+OnClick="btnOtherSendRequest_Click"/>|code-block|syntax|javascript|3002507|这是VB.NET中的代码：|3002508|Protected+Sub+btnOtherSendRequest_Click(sender+As+Object,+e+As+EventArgs)
++++Try

++++++++lblSubmitted.Text+=+""
++++++++lblValidateNotInfo.Text+=+""
++++++++hdnRequestType.Value+=+"OTH"

++++++++Dim+messageSuccessful+As+String+=+"Thank+you+for+submitting+your+Request(s)!"
++++++++Dim+messageUnSuccessful+As+String+=+"The+Request+was+not+submitted+due+to+some+errors.+Please+'Go+Back'+and+re-send!"

++++++++Select+Case+ddlRequest.SelectedValue
++++++++++++Case+"18"+'+Schedule+Update+Call
++++++++++++++++If+Not+(txtBoxStartDate.Text.Length+>+0+And+txtBoxEndDate.Text.Length+>+0+And+IsDate(txtBoxStartDate.Text)+And+IsDate(txtBoxEndDate.Text))+Then
++++++++++++++++++++'+AI+-+if+dates+are+in+invalid+format
++++++++++++++++++++ScriptManager.RegisterStartupScript(Me,+Me.GetType,+"AlertScript",+"alert+('Please+make+sure+the+dates+are+in+a+valid+format!');",+True)
++++++++++++++++++++Exit+Sub
++++++++++++++++ElseIf+Not+CDate(txtBoxStartDate.Text).CompareTo(Date.Now)+>+0+Then
++++++++++++++++++++'+AI+-+Start+Date+must+be+greater+than+today.
++++++++++++++++++++ScriptManager.RegisterStartupScript(Me,+Me.GetType,+"AlertScript",+"alert+('""Start""+date+must+be+a+future+date!');",+True)
++++++++++++++++++++Exit+Sub
++++++++++++++++ElseIf+Not+CDate(txtBoxEndDate.Text).CompareTo(CDate(txtBoxStartDate.Text))+>=+0+Then
++++++++++++++++++++'+AI+-+Start+Date+must+be+greater+than+today.
++++++++++++++++++++ScriptManager.RegisterStartupScript(Me,+Me.GetType,+"AlertScript",+"alert+('""End""+date+must+be+the+same+as+the+""Start""+date+or+a+date+after+the+""Start""+date!');",+True)
++++++++++++++++++++Exit+Sub
++++++++++++++++ElseIf+CDate(txtBoxStartDate.Text).DayOfWeek+=+DayOfWeek.Saturday+Or+CDate(txtBoxStartDate.Text).DayOfWeek+=+DayOfWeek.Sunday+Or+CDate(txtBoxEndDate.Text).DayOfWeek+=+DayOfWeek.Saturday+Or+CDate(txtBoxEndDate.Text).DayOfWeek+=+DayOfWeek.Sunday+Then
++++++++++++++++++++ScriptManager.RegisterStartupScript(Me,+Me.GetType,+"AlertScript",+"alert+('Weekends+excluded!');",+True)
++++++++++++++++++++Exit+Sub
++++++++++++++++Else
++++++++++++++++++++lblSubmitted.Text+=+messageSuccessful
++++++++++++++++End+If
++++++++++++Case+"19"+'+Request+Training+Call
++++++++++++Case+"20"+'+Request+Call+from+Cust.+Service
++++++++++++Case+"21"+'+Other+Request
++++++++++++++++If+txtBoxOther.Text+<>+""+Then
++++++++++++++++++++lblSubmitted.Text+=+messageSuccessful
++++++++++++++++Else
++++++++++++++++++++lblSubmitted.Text+=+messageUnSuccessful
++++++++++++++++++++ScriptManager.RegisterStartupScript(Me,+Me.GetType,+"AlertScript",+"alert+('Please+enter+your+request+into+the+textarea+first!');",+True)
++++++++++++++++++++txtBoxOther.Focus()
++++++++++++++++++++Exit+Sub
++++++++++++++++End+If
++++++++End+Select

++++++++Call+sendRequest()


++++++++Call+JSEffect(True)
++++Catch+ex+As+Exception
++++++++lblMessage.Text+=+"Error+when+taking+the+request+to+be+inserted+-+"+&+ex.Message
++++Finally
++++++++hlServCenterPend.Text+=+"Pending+Requests+("+&+getServCenterStatus("PEND").ToString+&+")"
++++++++hlServCenterComp.Text+=+"Completed+Requests+("+&+getServCenterStatus("COMP").ToString+&+")"
++++End+Try
End+Sub|3002509|这里我得到了错误：|3002510|Public+Sub+sendRequest(Optional+pid+As+Integer+=+0,+Optional+claim+As+Integer+=+0,+Optional+insured+As+Integer+=+0)

++++Dim+req+As+New+cls_services.request
++++Try

++++++++req.clinicID+=+CInt(MyMod.FetchStoredData("ClinicID"))
++++++++req.pid+=+pid
++++++++req.type+=+CInt(ddlRequest.SelectedValue)
++++++++Select+Case+req.type
++++++++++++Case+1,+11,+12,+13,+14
++++++++++++++++req.status+=+"COMP"
++++++++++++Case+Else
++++++++++++++++req.status+=+"PEND"
++++++++End+Select
++++++++req.claimID+=+claim
++++++++req.insuranceID+=+insured
++++++++req.dueDate+=+req.getDueDate(req.type)
++++++++req.other+=+Trim(txtBoxOther.Text)
++++++++Select+Case+req.type
++++++++++++Case+18
++++++++++++++++req.fromDate+=+CDate(txtBoxStartDate.Text)
++++++++++++++++req.fromTime+=+CDate(txtBoxStartTime.Text)//ERROR+HERE!+-+EXCEPTION
++++++++++++++++req.toDate+=+CDate(txtBoxEndDate.Text)
++++++++++++++++req.toTime+=+CDate(txtBoxEndTime.Text)
++++++++End+Select
++++++++req.fax+=+Trim(txtFaxTreatmentRecords.Text)
++++++++req.createUser+=+Request.ServerVariables("AUTH_USER")|3002511|我在这里的解决方案是，尝试将文本框中的值存储在一个隐藏字段中，然后在代码背后访问……但这仍然是一个“最后措施”的解决方案。|3002512|事实是，正如我所说的-在PostBack上-“文本”值消失了。不知道为什么。|3002513|还在等待建议！:)|3002514|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/1879c014a05118e7d16dc82b3aecae77.jpeg|imageAlt|1|https://ask.qcloudimg.com/http-save/yehe-900000/9536362c49d34534a2d56012af4abb67.jpeg^0|0|0|0|1|0|0|0|0|0|1|1|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1K|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|1L|8|@]|9|@$G|1M|H|1N|1|1O]]|A|$]]|$1|I|3|J|5|6|7|1P|8|@]|9|@]|A|$]]|$1|K|3|C|5|6|7|1Q|8|@]|9|@]|A|$]]|$1|L|3|E|5|F|7|1R|8|@]|9|@$G|1S|H|1T|1|1U]]|A|$]]|$1|M|3|C|5|6|7|1V|8|@]|9|@]|A|$]]|$1|N|3|O|5|6|7|1W|8|@]|9|@]|A|$]]|$1|P|3|Q|5|R|7|1X|8|@]|9|@]|A|$S|T]]|$1|U|3|V|5|6|7|1Y|8|@]|9|@]|A|$]]|$1|W|3|X|5|R|7|1Z|8|@]|9|@]|A|$S|T]]|$1|Y|3|Z|5|6|7|20|8|@]|9|@]|A|$]]|$1|10|3|11|5|R|7|21|8|@]|9|@]|A|$S|T]]|$1|12|3|13|5|6|7|22|8|@]|9|@]|A|$]]|$1|14|3|15|5|6|7|23|8|@]|9|@]|A|$]]|$1|16|3|17|5|6|7|24|8|@]|9|@]|A|$]]|$1|18|3|-4|5|6|7|25|8|@]|9|@]|A|$]]]|19|$1A|$5|1B|1C|1D|A|$1E|1F|1G|-4]]|1H|$5|1B|1C|1D|A|$1E|1I|1G|-4]]]]

So, to have an answer, here's the code it's on my Page.Load (for testing)

<img src="https://i.stack.imgur.com/24f7T.jpg" alt="enter image description here">
 You can see there's not value on txtBoxStarTime.Text

<img src="https://i.stack.imgur.com/wyyp2.jpg" alt="enter image description here">

For my situation, I have this inside an update panel:

<pre><code>&lt;asp:TextBox runat="server" ID="txtBoxStartTime" TextMode="Time" Width="102px"&gt;&lt;/asp:TextBox&gt;


&lt;asp:TextBox runat="server" ID="txtBoxEndTime" TextMode="Time" Width="102px"&gt;&lt;/asp:TextBox&gt;


&lt;asp:Button CssClass="positive" ID="btnOtherSendRequest" runat="server" Text="&amp;nbsp;Send Request" ToolTip="The selected request would be sent to X" OnClick="btnOtherSendRequest_Click"/&gt;
</code></pre>

This is the code in VB.NET:

<pre><code>Protected Sub btnOtherSendRequest_Click(sender As Object, e As EventArgs)
 Try

 lblSubmitted.Text = ""
 lblValidateNotInfo.Text = ""
 hdnRequestType.Value = "OTH"

 Dim messageSuccessful As String = "Thank you for submitting your Request(s)!"
 Dim messageUnSuccessful As String = "The Request was not submitted due to some errors. Please 'Go Back' and re-send!"

 Select Case ddlRequest.SelectedValue
 Case "18" ' Schedule Update Call
 If Not (txtBoxStartDate.Text.Length &gt; 0 And txtBoxEndDate.Text.Length &gt; 0 And IsDate(txtBoxStartDate.Text) And IsDate(txtBoxEndDate.Text)) Then
 ' AI - if dates are in invalid format
 ScriptManager.RegisterStartupScript(Me, Me.GetType, "AlertScript", "alert ('Please make sure the dates are in a valid format!');", True)
 Exit Sub
 ElseIf Not CDate(txtBoxStartDate.Text).CompareTo(Date.Now) &gt; 0 Then
 ' AI - Start Date must be greater than today.
 ScriptManager.RegisterStartupScript(Me, Me.GetType, "AlertScript", "alert ('""Start"" date must be a future date!');", True)
 Exit Sub
 ElseIf Not CDate(txtBoxEndDate.Text).CompareTo(CDate(txtBoxStartDate.Text)) &gt;= 0 Then
 ' AI - Start Date must be greater than today.
 ScriptManager.RegisterStartupScript(Me, Me.GetType, "AlertScript", "alert ('""End"" date must be the same as the ""Start"" date or a date after the ""Start"" date!');", True)
 Exit Sub
 ElseIf CDate(txtBoxStartDate.Text).DayOfWeek = DayOfWeek.Saturday Or CDate(txtBoxStartDate.Text).DayOfWeek = DayOfWeek.Sunday Or CDate(txtBoxEndDate.Text).DayOfWeek = DayOfWeek.Saturday Or CDate(txtBoxEndDate.Text).DayOfWeek = DayOfWeek.Sunday Then
 ScriptManager.RegisterStartupScript(Me, Me.GetType, "AlertScript", "alert ('Weekends excluded!');", True)
 Exit Sub
 Else
 lblSubmitted.Text = messageSuccessful
 End If
 Case "19" ' Request Training Call
 Case "20" ' Request Call from Cust. Service
 Case "21" ' Other Request
 If txtBoxOther.Text &lt;&gt; "" Then
 lblSubmitted.Text = messageSuccessful
 Else
 lblSubmitted.Text = messageUnSuccessful
 ScriptManager.RegisterStartupScript(Me, Me.GetType, "AlertScript", "alert ('Please enter your request into the textarea first!');", True)
 txtBoxOther.Focus()
 Exit Sub
 End If
 End Select

 Call sendRequest()


 Call JSEffect(True)
 Catch ex As Exception
 lblMessage.Text = "Error when taking the request to be inserted - " &amp; ex.Message
 Finally
 hlServCenterPend.Text = "Pending Requests (" &amp; getServCenterStatus("PEND").ToString &amp; ")"
 hlServCenterComp.Text = "Completed Requests (" &amp; getServCenterStatus("COMP").ToString &amp; ")"
 End Try
End Sub
</code></pre>

And Here I got the error:

<pre><code>Public Sub sendRequest(Optional pid As Integer = 0, Optional claim As Integer = 0, Optional insured As Integer = 0)

 Dim req As New cls_services.request
 Try

 req.clinicID = CInt(MyMod.FetchStoredData("ClinicID"))
 req.pid = pid
 req.type = CInt(ddlRequest.SelectedValue)
 Select Case req.type
 Case 1, 11, 12, 13, 14
 req.status = "COMP"
 Case Else
 req.status = "PEND"
 End Select
 req.claimID = claim
 req.insuranceID = insured
 req.dueDate = req.getDueDate(req.type)
 req.other = Trim(txtBoxOther.Text)
 Select Case req.type
 Case 18
 req.fromDate = CDate(txtBoxStartDate.Text)
 req.fromTime = CDate(txtBoxStartTime.Text)//ERROR HERE! - EXCEPTION
 req.toDate = CDate(txtBoxEndDate.Text)
 req.toTime = CDate(txtBoxEndTime.Text)
 End Select
 req.fax = Trim(txtFaxTreatmentRecords.Text)
 req.createUser = Request.ServerVariables("AUTH_USER")
</code></pre>

My solution here, is trying to store the value from textbox in a hiddenfield, then access in codebehind... but it is still a "last-measure" solution.

The fact is, as I said - On PostBack - the "Text" value disappears. Don't know why.

Still waiting for suggestions! :)

blocks|key|212457|text|所以,|type|unstyled|depth|inlineStyleRanges|entityRanges|data|212458|我已经为此挣扎了几个小时了。我没有找到任何“代码隐藏”解决方案。所以我提出了一个解决方案。也许它会在某些方面对你有所帮助：|212459|使用JavaScript将值存储到隐藏字段中，如下所示：|212460|<asp:TextBox+runat="server"+ID="txtBoxStartTime"+TextMode="Time"+Width="102px"+onchange="storeStartTime()"></asp:TextBox>

<asp:HiddenField+runat="server"+ID="hdnStartTime"/>|code-block|syntax|javascript|212461|JavaScript函数：|212462|function+storeStartTime()+{
var+x+=+document.getElementById("ctl00_mainPageBody_txtBoxStartTime");
var+y+=+document.getElementById("ctl00_mainPageBody_hdnStartTime");
y.value+=+x.value;
alert(y.value);|212463|}|212464|如果你遇到这个问题，希望对你有所帮助！|212465|entityMap^0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|W|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|X|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|Y|8|@]|9|@]|A|$]]|$1|M|3|N|5|H|7|Z|8|@]|9|@]|A|$I|J]]|$1|O|3|P|5|6|7|10|8|@]|9|@]|A|$]]|$1|Q|3|R|5|6|7|11|8|@]|9|@]|A|$]]|$1|S|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|T|$]]

So,

I've been struggling with this for some hours. I did not find any "code-behind" solution. So I come with a solution. Maybe it will help you in some ways:

Using JavaScript to store the value into a hiddenfield, like this:

<pre><code>&lt;asp:TextBox runat="server" ID="txtBoxStartTime" TextMode="Time" Width="102px" onchange="storeStartTime()"&gt;&lt;/asp:TextBox&gt;

&lt;asp:HiddenField runat="server" ID="hdnStartTime"/&gt;
</code></pre>

JavaScript Function:

<pre><code>function storeStartTime() {
var x = document.getElementById("ctl00_mainPageBody_txtBoxStartTime");
var y = document.getElementById("ctl00_mainPageBody_hdnStartTime");
y.value = x.value;
alert(y.value);
</code></pre>

}

Hope it will help if you encounter this problem!

blocks|key|5117239|text|使用HH:mm时间格式：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|5117240|Time.Text+=+SomeTime.ToString("HH:mm");|code-block|syntax|javascript|5117241|entityMap^0|2|5|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

Use the <code>HH:mm</code> time format:

<pre><code>Time.Text = SomeTime.ToString("HH:mm");
</code></pre>

blocks|key|2117231|text|使用这个属性："format“|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2117232|<asp:TextBox+ID="txtTime"+runat="server"+TextMode="Time"+format="HH:mm"+/>|code-block|syntax|javascript|2117233|它将返回24小时的格式。|2117234|如果您的值是10:00+PM，那么在服务器端，(txtTime.Text)值将是"22:00“。|2117235|我在Chrome上测试了它，它是工作的|2117236|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]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Use this Attribute: "format"

<pre><code>&lt;asp:TextBox ID="txtTime" runat="server" TextMode="Time" format="HH:mm" /&gt;
</code></pre>

it will return the format of 24 for hours.

if your value is 10:00 PM then in server side the (txtTime.Text) value will be "22:00".

I Test it in Chrome and it's work

I read many topics about this but I'm having a problem with the Textmode = "Time" property on .NET 4.5, as well.

I have this on aspx side:

<pre><code>&lt;asp:TextBox runat="server" ID="txtBoxStartTime" TextMode="Time"&gt;&lt;/asp:TextBox&gt;
</code></pre>

On vb.net side, when I try to get the Text value from this textbox, I have nothing but empty string ("").

<pre><code>CDate(txtBoxStartTime.Text)
</code></pre>

On client-side, in webInspector I can easily take the value from the textbox, but I need it in server-side...

Even though I try with HTML5 tags with runat="server" I encounter the same problem.

I've noticed the problem is the same with all of the Textmode Property on Framework 4.5

Any suggestions/solutions on this? 
I truly appreciate your input!

Thanks!

Text on Textmode Time property in .NET 4.5 disappears in Code Behind

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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我读了很多关于这方面的话题，但我也遇到了.NET 4.5上的Textmode = "Time“属性的问题。我在aspx方面有以下几点：<asp:TextBox runat="server" ID="txtBoxStartTime" TextMode="Time"></asp:TextBox>在vb.net端，当我试图从...

问.NET 4.5中文本模式时间属性上的文本在代码隐藏中消失
EN

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问.NET 4.5中文本模式时间属性上的文本在代码隐藏中消失EN