值不會從JavaScript傳遞給代碼隱藏asp.net？

Question

<div class="row"> 
           <label for="email">E-mail Address</label> 
           <div class="col"> 
            <div class="text"><asp:TextBox ID="TextBox2" runat="server" 
              onchange="javascript:updateHiddenField();"></asp:TextBox><asp:HiddenField ID="HiddenField1" 
               runat="server" /> 
            </div> 
            <span>Find e-mail on <a href="#">My Address Book</a>/<a href="#">Contacts</a></span> 
            <span>Find e-mail on 
             <asp:HyperLink ID="HyperLink1" runat="server">Facebook Profile</asp:HyperLink></span> 
           </div> 
          </div> 
          <div class="row"> 
           <label>Invite Type</label> 
           <div class="col"> 
            <div class="inner-row"> 
             <asp:RadioButton runat="server" ID="r1" Checked="true" GroupName="r" 
              /> 
             <label for="id-1"><em>Personalized</em> - Add a personal note to your invitation. This invite type will let your friend know of your identity and will include your personal note</label> 
            </div> 
            <div class="inner-row"> 
             <asp:RadioButton runat="server" ID="r2" GroupName="r" /> 
             <label for="id-2"><em>Anonymous</em> - Sending an invite anonymously will not reveal your indentity to your friend.</label> 
            </div> 
           </div> 
          </div> 
          <div class="row"> 
           <label for="message">Personal Note</label> 
           <div class="col"> 
            <div class="textarea"> 
             <div class="textarea-holder"> 
              <asp:TextBox ID="TextBox1" runat="server" TextMode="MultiLine" Rows="10" 
               Columns="30" onchange="javascript:updateHiddenField1();"></asp:TextBox><asp:HiddenField 
               ID="HiddenField2" runat="server" /> 
             </div> 
            </div> 
            <span class="text-note">Including a note is optional, but isn’t<br />personalized messages always nice :)</span> 
           </div> 
          </div> 
<asp:LinkButton ID="LinkButton6" runat="server" onClick="LinkButton6_Click" CssClass="btn-send"></asp:LinkButton> 

這是我的aspx代碼，我想從文本框第一傳輸值，然後hiddenfield然後代碼隱藏

<script type="text/javascript"> 
    function updateHiddenField() { 
     document.getElementById('HiddenField1').value = document.getElementById('TextBox2').value; 

    } 

    function updateHiddenField1() { 
     document.getElementById('HiddenField2').value = document.getElementById('TextBox1').value 
    } 
</script> 

當我這樣做 alert(document.getElementById('HiddenField1').value);

但是他們不是

值越來越顯示傳遞到代碼隱藏

public void LinkButton6_Click(object sender, EventArgs e) { 

try{ 
      System.Net.Mail.MailMessage mail = new System.Net.Mail.MailMessage(); 
      mail.Subject = ""; 
      mail.Body = HiddenField1.Value; 
      mail.To.Add(HiddenField2.Value); 

      ////send the message 

      System.Net.Mail.SmtpClient mySmtpClient = new System.Net.Mail.SmtpClient(); 
      System.Net.NetworkCredential myCredential = new System.Net.NetworkCredential("",""); 
      //mySmtpClient.Port="25"; 
      mySmtpClient.Host = ""; 
      mySmtpClient.UseDefaultCredentials = false; 
      mySmtpClient.Credentials = myCredential; 
      mySmtpClient.Send(mail); 
     } 
     catch (Exception ex) 
     { 
      Response.Write(ex.ToString()); 
     } 

編輯：

1. 我已經嘗試使用mail.Body = TextBox2.Text; mail.To.Add(TextBox1.Text);

2. 我曾嘗試沒有在UpdatePanel

3. 的代碼在CSS的彈出窗口，是主要的問題

建議我使用html按鈕來調用javascript函數

function btn_click() { 
     var email = document.getElementById('HiddenField1').value; 
     var body = document.getElementById('HiddenField2').value; 

    } 

如何傳遞這個值作爲我的Asp.net

請憑據幫助

Answer 1

<script type="text/javascript"> 
function SendForm() { 

     var email = $get("TextBox2").value; 
     var message = $get("TextBox1").value; 

     PageMethods.SendForm(email, message, 
    OnSucceeded, OnFailed); 
    } 

    function OnSucceeded() { 
     // Dispaly "thank you." 
     $get("ContactFieldset").innerHTML = "<p>Thank you!</p>"; 
    } 

    function OnFailed(error) { 
     // Alert user to the error. 
     alert(error.get_message()); 
    } 
</script> 

，並在使用後面Asp.net代碼：

[WebMethod] 
public static void SendForm(string email, string message) 
{ 


    System.Net.Mail.MailMessage mail = new System.Net.Mail.MailMessage(); 
     mail.Subject = ""; 
     mail.From = new MailAddress(""); 
     mail.Body = message; 
     mail.To.Add(email); 

     ////send the message 

     System.Net.Mail.SmtpClient mySmtpClient = new System.Net.Mail.SmtpClient(); 
     System.Net.NetworkCredential myCredential = new System.Net.NetworkCredential("",""); 
     //mySmtpClient.Port="25"; 
     mySmtpClient.Host = ""; 
     mySmtpClient.UseDefaultCredentials = false; 
     mySmtpClient.Credentials = myCredential; 
     mySmtpClient.Send(mail); 



    if (string.IsNullOrEmpty(email)) 
    { 
     throw new Exception("You must supply an email address."); 
    } 

    if (string.IsNullOrEmpty(message)) 
    { 
     throw new Exception("Please provide a message to send."); 
    } 

    // If we get this far we know that they entered enough data, so 
    // here is where you would send the email or whatever you wanted 
    // to do :) 
} 

這應該是對你有好處:)

Answer 2

難道你想讀從代碼隱藏文本框直接的價值？

mail.Body = TextBox1.Text; 

Answer 3

你輸入電子郵件地址TextBox2中，然後將其複製到HiddenField1但閱讀HiddenField2在代碼隱藏的地址。同樣，您將郵件正文輸入到TextBox1中，然後將其複製到HiddenField2中，但隨後讀取代碼隱藏中的HiddenField1（在客戶端上1和2之間的這種交換無需混淆）。在隱藏字段中測試值時，是否用數據填充兩個文本框？

Answer 4

首先，我認爲你應該刪除hiddenfields及其相關的任何東西（javascript函數）。重點關注導致問題的原因而不是解決方案，問題在於文本框值不會發布回服務器。當你最終得到它與隱藏領域的工作問題可能仍然存在。儘管您已經發現隱藏字段與原始文本框具有相同的問題。

隔離問題：

1）是實際值發送到服務器？ （你可以通過開發工具中的瀏覽器或HttpWatch等插件來驗證，最糟糕的情況是你可以使用嗅探器）

2）確保updatepanels不會通過關閉ajax/updatepanel功能來干擾。 （您可以通過在您的ScriptManager上將EnablePartialRendering設置爲false來執行此操作，ScriptManager通常位於主頁上）。雖然這應該不重要。

3）如果您確認了正確的值實際發佈到服務器，請確保Page_Load（或類似功能）中沒有奇怪的邏輯覆蓋在OnLoad之前處理的回發值。這可能是一些初始化，只有當它不是回發時才應該運行。

4）處理回發後的變量時，確保存在控件，否則後退值將被忽略。你注意到代碼是在「CSS彈出窗口」中，確保在處理回發後變量時存在該彈出窗口（在控件集合中）。