C# 你有3个选择：

a） 要使

OnBlur

方法工作，请删除

AutoPostBack

属性（它是客户端

OnChange

事件），但保留

OnTextChanged

事件（它是服务器端）

b） 对于要工作的

ViewState

方法，请在文本框上设置

ViewStateMode=“Enabled”

，并确保您在其容器上使用的是

ViewStateMode=“Disabled”

---

c） javascript

.defaultValue

方法…

欢迎使用SO。我不是第一名，因为你是新会员，但你的问题毫无帮助。你抛出了一些大代码，甚至不包含你说有问题的部分，或者至少我找不到它。我花了很多时间，仍然找不到问题出在哪里，在巫婆行。请仅显示代码中存在此问题的部分，并关注真正的问题。我想你甚至不知道这个代码是做什么的。

TextChanged

在您的代码中根本不存在。@Aristos--我知道我没有发布_TextChanged事件，因为它有效。只有在我上面概述的精确情况下，它才不起作用，因此错误在其他地方。但我添加到原始帖子只是为了验证。附件在哪里？annualHours\u textchanged找不到它。您是指文本框的创建位置吗？我添加了那部分代码。它发生在Page_Load调用的sub中。如果答案对您有帮助，请不要忘记接受答案，作为对他人的基本礼貌…谢谢，但文本已更改。用户不是从“foo”变为“foo”，而是从“foo”变为“bar”，“bar”变为“stuff”，然后从“stuff”变为“foo”——事件按其应该的方式每次运行——直到用户返回到“foo”。几乎相同的方法在另一页上工作；只是不在这个面板上。@NicoleCastle文本有，但值属性没有，我用澄清为您更新了答案……它已经在更新面板中了——但如上所述，viewstate已关闭，无法打开。我们也无法使OnBlur事件正确触发。我将尝试您提到的另一个选项。更新面板是关于上面ASCX文件的第23行。我在星期五试过A）B）和C）。没有任何进展；页面生命周期中的某些内容正在清除数据。我还尝试将值隐藏在更新面板外的隐藏字段中，但它们也被清除了。从用户的角度来看，这个bug已经够模糊的了，我们正在将它添加到待办事项中，然后继续。每当我再次讨论这个问题时，我都会从另一个角度来看待它：为什么我在服务器上出现viewstate错误，而不是在开发中。不过，我将此作为答案，因为这三个项目都是应该有效的解决方案，我真的非常感谢您的帮助！

 TextBox annualHoursTextBox = new TextBox();
 annualHoursTextBox.ID = string.Format("bundle{0}_annualHoursTextBox{1}", bundle.BundleNbr, parentItem.LaborItemNbr);
 annualHoursTextBox.CssClass = "";
 annualHoursTextBox.Columns = 4;
 annualHoursTextBox.Text = childItem == null ? string.Empty : childItem.FTEHours.ToString("F0");
 annualHoursTextBox.AutoPostBack = true;
 annualHoursTextBox.TextChanged += new EventHandler(annualHoursTextBox_TextChanged);

 AsyncPostBackTrigger AHtrigger = new AsyncPostBackTrigger();
 AHtrigger.ControlID = annualHoursTextBox.UniqueID;
 AHtrigger.EventName = "TextChanged";
 upPricingSheet.Triggers.Add(AHtrigger);

 //snip

 //add some attributes for reference on the events
 annualHoursTextBox.Attributes["othercontrol"] = tasksPerYearTextBox.UniqueID;
 annualHoursTextBox.Attributes["nextcontrol"] = benefitsTextBox.UniqueID;
 annualHoursTextBox.Attributes["targetTBcontrol"] = taskTimeTextBox.UniqueID;
 annualHoursTextBox.Attributes["targetDDLcontrol"] = taskTimeUOMDropDown.UniqueID;

protected void annualHoursTextBox_TextChanged(object sender, EventArgs e)
{
    TextBox ah = sender as TextBox;
    TextBox other = Page.FindControl(ah.Attributes["othercontrol"]) as TextBox;

    if ((!String.IsNullOrEmpty(ah.Text)) && (!String.IsNullOrEmpty(other.Text))) 
    {
        TextBox next = Page.FindControl(ah.Attributes["nextcontrol"]) as TextBox;
        TextBox targetTB = Page.FindControl(ah.Attributes["targetTBcontrol"]) as TextBox;
        DropDownList ddl = Page.FindControl(ah.Attributes["targetDDLcontrol"]) as DropDownList;
        Double TasksPerSecond;

        TasksPerSecond = CalculateTimePerTask(ah.Text, other.Text);
        string TimeUnit;
        double Time;

        if (TasksPerSecond < 60)
        {
            TimeUnit = "Seconds";
            Time = TasksPerSecond;
        }
        else if (TasksPerSecond < 3600)
        {
            TimeUnit = "Minutes";
            Time = (TasksPerSecond / 60);
        }
        else
        {
            TimeUnit = "Hours";
            Time = (TasksPerSecond / 60 / 60);
        }

        //Enter the time in the appropriate textbox
        targetTB.Text = Time.ToString("F2");

        //select the appropriate item from the ddl
        ListItem i = ddl.Items.FindByText(TimeUnit);

        if (i != null)
        {
            ddl.SelectedItem.Selected = false;
            i.Selected = true;
        }
    }
}

<%@ Page Title="" Language="C#" MasterPageFile="~/MasterPage.master"
AutoEventWireup="true" CodeFile="Solution.aspx.cs" Inherits="Solution" %>

<%@ Register Src="fragments/solutionRecommended.ascx" TagName="solutionRecommended"
TagPrefix="uc1" %>
<%@ Register Src="fragments/solutionPricingSheet.ascx" TagName="solutionPricingSheet"
TagPrefix="uc2" %>
<%@ Register Src="fragments/solutionSuggested.ascx" TagName="solutionSuggested" TagPrefix="uc3" %>
<%@ Register Src="fragments/solutionSummary.ascx" TagName="solutionSummary" TagPrefix="uc4" %>
<%@ Register Src="fragments/ucItemFilterSearch.ascx" TagName="ucItemFilterSearch"
TagPrefix="uc5" %>

<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="Server">
<script type="text/javascript">
    function addItemToBundle(postUrl, redirectUrl) {
        $.post(postUrl);
        window.location = redirectUrl;
        //  window.location = url;
    }

</script>
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server">
<asp:HiddenField ID="hfStepNbr" runat="server" />
<asp:Panel ID="pnlStepMessage" runat="server" Visible="false" CssClass="padding10">
    <h3 class="placeholder">
        <asp:Label ID="lblMessage" runat="server" /></h3>
</asp:Panel>
<div class='elev8form' id="mainDiv" runat="server">
    <h3 class='header'>
        Solutions</h3>
    <div id="tabs">
        <div class='tab'>
            <asp:LinkButton ID="lbSuggested" runat="server" Text="Select Items" data-step="1"
                OnClick="lbTab_Click" CausesValidation="false"></asp:LinkButton>
        </div>
        <div class='tab'>
            <asp:LinkButton ID="lbPricing" runat="server" Text="Pricing Worksheet" data-step="2"
                OnClick="lbTab_Click" ></asp:LinkButton>
        </div>
        <div class='tab'>
            <asp:LinkButton ID="lbRecommendedSolutions" runat="server" Text="Recommended Solutions"
                data-step="3" OnClick="lbTab_Click" CausesValidation="false"></asp:LinkButton>
        </div>
        <div class='tab'>
            <asp:LinkButton ID="lbSummary" runat="server" Text="Solutions Summary" data-step="4"
                OnClick="lbTab_Click" CausesValidation="false"></asp:LinkButton>
        </div>
    </div>
    <div id="solutions-body">
        <asp:MultiView ID="mltSolution" runat="server">
            <asp:View ID="viewSuggested" runat="server">
                <uc3:solutionSuggested ID="solutionSuggested1" runat="server" RedirectUrl="~/portal/elev8/solution.aspx" />
            </asp:View>
            <asp:View ID="viewPricing" runat="server">
                <uc2:solutionPricingSheet ID="solutionPricingSheet1" runat="server" />
            </asp:View>
            <asp:View ID="viewRecommended" runat="server">
                <uc1:solutionRecommended ID="solutionRecommended1" runat="server" />
            </asp:View>
            <asp:View ID="viewSummary" runat="server">
                <p style="font-size: 14px;">
                    Text here 
                </p>
                <uc4:solutionSummary ID="solutionSummary1" runat="server" />
            </asp:View>
        </asp:MultiView>
    </div>
</div>
<script type="text/javascript">
    function pageLoad() {
        $(function () {

            var maxChannelHeight;

            var items = $('.channel');

            for (var counter = 0; counter < items.length; counter++) {
                var channel = items[counter];

                var channelHeight = $(channel).height();

                maxChannelHeight = maxChannelHeight > channelHeight ? maxChannelHeight : channelHeight;
            }

            $('.channel').height(maxChannelHeight);

            $("#priceing-sheet-save-button *").click(function () {
                window.scrollTo(0, 0);

            });
        });
    }

</script>

<%@ Control Language="C#" AutoEventWireup="true" CodeFile="solutionPricingSheet.ascx.cs"
Inherits="solutionPricingSheet" %>

<asp:UpdateProgress ID="upProgressRecSolution" runat='server' AssociatedUpdatePanelID="upPricingSheet">
<ProgressTemplate>
    <div style="position: absolute; z-index: 2000; left: 45%; display: inline; width: 100px;"
        class="elev8form">
        <asp:Image ID="Image1" runat='server' ImageUrl="~/portal/img/ajax-loader-big.gif" />
    </div>
</ProgressTemplate>
</asp:UpdateProgress>
<div id="pricing-sheet-wrapper">
<p class='left'>
    More text</p>
<asp:Panel ID="pnlSaveMessage" runat="server" Visible="false" CssClass="save-message">
    <span>Item prices saved</span>
</asp:Panel>
<div class='export'>
    <span class='bigbutton'>
        <asp:LinkButton ID="btnExport" runat='server' Text="Export to Excel" OnClick="btnExport_Click" />
    </span>
</div>
<asp:UpdatePanel ID="upPricingSheet" runat="server" UpdateMode="Conditional" ViewStateMode="Disabled">
    <ContentTemplate>
        <div id="pricing-sheet">        
            <asp:PlaceHolder ID="phContent" runat="server"></asp:PlaceHolder>
            <asp:PlaceHolder ID="opportunityPlaceHolder" runat="server" />
            <div class='save export'>
                <div>
                    <div id="pageValidationError" class="validationMessage">
                       * Changes not saved. Review all entries for validation messages. Required fields marked with an asterisk.
                    </div>
                </div>
                <%--<asp:HiddenField ID="hf" runat="server" value="0" />--%>
                <center>
                    <span id="priceing-sheet-save-button">
                    <asp:Button ID="btnSave" runat="server" Text="Save All Prices" SkinID="redbutton"
                        OnClick="btnSave_Click" CausesValidation="true" />
                    </span>
                </center>
            </div>
        </div>
        <script type="text/javascript">
            function pageLoad() {

                $("#tabs .tab a").click(function () {
                    $("#<%= btnSave.ClientID%>").click();
                });
            }
        </script>
    </ContentTemplate>
</asp:UpdatePanel>
</div>
    <script type="text/javascript">
$(document).ready(function () {
    $('.validationMessage').hide();

    $('#<%= btnSave.ClientID %>').click(function () {
        if (Page_IsValid == false) {
            $('.validationMessage').show();
            return false;
        }
    });

    $('input[type=text]').blur(function () {
        if (Page_IsValid == false) {
            $('.validationMessage').show();
            return false;
        }
        else {
            $('.validationMessage').hide();
        }
    })
});