Textbox.text的值不反映用戶從代碼隱藏的類型值C＃ASP.Net

Question

我有一個編輯按鈕，使一些表單元素從禁用啓用，然後進行編輯。除非由於某種原因，在我嘗試引用來自updateButton_Click（）內部的Textbox.Text值的button_click事件中，除了某些原因，我的工作正常，它仍然具有舊值而不是用戶編輯的值。有任何想法嗎？

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Web; 
using System.Web.UI; 
using System.Web.UI.WebControls; 
using System.Diagnostics; 

public partial class UserControls_OrderDetailsAdmin : System.Web.UI.UserControl 
{ 
    protected void Page_Load(object sender, EventArgs e) 
    { 
    Page_PreRender(sender, e); 
    } 


    // edit mode by default is false 
    private bool editMode = false; 
    // set up the form 
    protected void Page_PreRender(object sender, EventArgs e) 
    { 
     // check if we must display order details 
     if (Session["AdminOrderID"] != null) 
     { 

       //fill constituent controls with data 
       PopulateControls(); 
       // set edit mode 
       SetEditMode(editMode); 
     } 
     else 
      // Hide 
      this.Visible = false; 
    } 

// populate the form with data 
private void PopulateControls() 
{ 

    if (Session["AdminOrderID"] != null) 
    { 
     // obtain order ID from the session 
     string orderId = Session["AdminOrderID"].ToString(); 
     // obtain order info 
     OrderInfo orderInfo = OrdersAccess.GetInfo(orderId); 



     // populate labels and text boxes with order info 
     orderIdLabel.Text = "Displaying Order #" + orderId; 
     totalAmountLabel.Text = String.Format("{0:c}", orderInfo.GrandTotal); 
     dateCreatedTextBox.Text = orderInfo.DateCreated; 
     dateShippedTextBox.Text = orderInfo.DateShipped; 
     statusLabel.Text = orderInfo.Status.ToString(); ; 
     statusLabel.Enabled = false; 
     completedCheck.Checked = orderInfo.Completed; 
     canceledCheck.Checked = orderInfo.Canceled; 
     commentsTextBox.Text = orderInfo.Comments; 

     // by default the Edit button is enabled, and the 
     // Update and Cancel buttons are disabled 
     editButton.Enabled = true; 
     updateButton.Enabled = false; 
     cancelButton.Enabled = false; 
     // Decide which one of the other three buttons 
     // should be enabled and which should be disabled 
     if (canceledCheck.Checked || completedCheck.Checked) 
     { 
      // if the order was canceled or completed ... 
      markVerifiedButton.Enabled = false; 
      markCompletedButton.Enabled = false; 
      markCanceledButton.Enabled = false; 
     } 
     else if (verifiedCheck.Checked) 
     { 
      // if the order was not canceled but is verified ... 
      markVerifiedButton.Enabled = false; 
      markCompletedButton.Enabled = true; 
      markCanceledButton.Enabled = true; 
     } 
     else 
     { 
      // if the order was not canceled and is not verified ... 
      markVerifiedButton.Enabled = true; 
      markCompletedButton.Enabled = false; 
      markCanceledButton.Enabled = true; 
     } 
     // fill the data grid with order details 
     grid.DataSource = OrdersAccess.GetDetails(orderId); 
     grid.DataBind(); 

    } 
} 

// enable or disable edit mode 
private void SetEditMode(bool enable) 
{ 
    dateCreatedTextBox.Enabled = false; 
    dateShippedTextBox.Enabled = enable; 
    verifiedCheck.Enabled = enable; 
    completedCheck.Enabled = enable; 
    canceledCheck.Enabled = enable; 
    commentsTextBox.Enabled = enable; 
    customerNameTextBox.Enabled = enable; 

} 

protected void editButton_Click(object sender, EventArgs e) 
{ 
    editMode = true; 
} 
protected void updateButton_Click(object sender, EventArgs e) 
{ 
    //SetEditMode(false); 
    //System.Threading.Thread.SpinWait(500); 
    // Store the new order details in an OrderInfo object 
     OrderInfo orderInfo = new OrderInfo(); 

     string orderId = Session["AdminOrderID"].ToString(); 
     orderInfo.OrderID = Int32.Parse(orderId); 
     orderInfo.DateCreated = dateCreatedTextBox.Text; 
     orderInfo.DateShipped = dateShippedTextBox.Text; 
     orderInfo.Verified = verifiedCheck.Checked; 
     orderInfo.Completed = completedCheck.Checked; 
     orderInfo.Canceled = canceledCheck.Checked; 
     orderInfo.Comments = commentsTextBox.Text; 
     orderInfo.CustomerName = customerNameTextBox.Text; 

     // try to update the order 
     try 
     { 
      // Update the order 
      OrdersAccess.Update(orderInfo); 

     } 
     catch (Exception ex) 
     { 
      Debug.WriteLine(ex.Message + ex.StackTrace); 
     } 
     // Exit edit mode 
     // SetEditMode(false); 
     // Update the form 
     SetEditMode(false); 
     PopulateControls(); 


} 
protected void cancelButton_Click(object sender, EventArgs e) 
{ 
    // don't need to do anything, editMode will be set to false by default 
} 
protected void markVerifiedButton_Click(object sender, EventArgs e) 
{ 
    // obtain the order ID from the session 
    string orderId = Session["AdminOrderID"].ToString(); 
    // mark order as verified 
    OrdersAccess.MarkVerified(orderId); 
    // update the form 
    PopulateControls(); 
} 
protected void markCompletedButton_Click(object sender, EventArgs e) 
{ 
    // obtain the order ID from the session 
    string orderId = Session["AdminOrderID"].ToString(); 
    // mark the order as completed 
    OrdersAccess.MarkCompleted(orderId); 
    // update the form 
    PopulateControls(); 
} 
protected void markCanceledButton_Click(object sender, EventArgs e) 
{ 
    // obtain the order ID from the session 
    string orderId = Session["AdminOrderID"].ToString(); 
    // mark the order as canceled 
    OrdersAccess.MarkCanceled(orderId); 
    // update the form 
    PopulateControls(); 
} 

}

Answer 1

嘗試使用頁面isPostBack財產在頁面加載事件

protected void Page_Load(object sender, EventArgs e) 
    { 
    if(!Page.IsPostBack){ 
    Page_PreRender(sender, e); 
    } 
}