c# - コードビハインドC＃ASP.Netからのユーザー入力値を反映していないTextbox.text値

Question

一部のフォーム要素を無効から有効にしてから編集できるようにする編集ボタンがあります。updateButton_Click() 内から Textbox.Text 値を参照しようとすると、なんらかの理由を除いて正しく機能しています。ユーザーが編集した値ではなく、古い値が残っています。何か案は？

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

isPostBackpageload イベントでページのプロパティを使用してみてください

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