無法從文本框中獲取更新的值-有解無憂

我正在做一個專案。在這個頁面中，當用戶單擊此頁面時，它會從 Dababase 獲取資料并填寫文本框，這是 UserProfile 頁面。如果用戶想要更新他們可以更新的資料。 但問題是它從文本框中獲取舊值

組態檔.aspx

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

<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="Server">
    <link rel="stylesheet" href="../CSS/profilecss.css" />
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js">
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.bundle.min.js">
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="cphMain" runat="Server">
    <div class="container rounded bg-white mt-5 mb-5">
        <div class="row">
            <div class="col-md-3 border-right">
                <div class="d-flex flex-column align-items-center text-center p-3 py-5">
                    <%--<span class="font-weight-bold">First User</span>--%>
                    <%--<span class="text-black-50">[email protected]</span>--%>
                    <asp:Label ID="lblUser" runat="server" CssClass="font-weight-bold" EnableViewState="false"></asp:Label>
                </div>
            </div>
            <div class="col-md-5 border-right">
                <div class="p-3 py-5">
                    <div class="d-flex justify-content-between align-items-center mb-3">
                        <h4 class="text-right">Profile Settings</h4>
                    </div>
                    <div class="row mt-2">
                        <div class="col-md-12">
                            <label class="labels">Name</label>
                            <asp:TextBox ID="txtName" runat="server" CssClass="form-control" PlaceControl="Enter User Name"></asp:TextBox>
                            <%--<input type="text" class="form-control" placeholder="Name" value="">--%>
                        </div>
                    </div>
                    <div class="row mt-3">
                        <div class="col-md-12">
                            <label class="labels">Mobile Number</label>
                            <asp:TextBox ID="txtMobileNumber" runat="server" CssClass="form-control" PlaceControl="Enter User Name"></asp:TextBox>
                        </div>
                        <div class="col-md-12">
                            <label class="labels">Email ID</label>
                            <asp:TextBox ID="txtEmail" runat="server" CssClass="form-control" PlaceControl="Enter User Name"></asp:TextBox>

                        </div>
                        <div class="col-md-12">
                            <label class="labels">Password</label>
                            <asp:TextBox ID="txtPassword" runat="server" CssClass="form-control" auto PlaceControl="Enter Password Name"></asp:TextBox>

                        </div>
                    </div>
                    <div class="row">
                        <div class="col-md-12">
                            <asp:Label ID="lblMessage" runat="server" EnableViewState="false"></asp:Label>
                        </div>
                    </div>
                    <div class="mt-5 text-center">
                        <%--<button class="btn btn-primary profile-button" type="button">Save Profile</button>--%>
                        <asp:Button ID="btnSave" runat="server" Text="Save" CssClass="btn btn-primary profile-button" OnClick="btnSave_Click" />
                    </div>
                </div>
            </div>
        </div>
    </div>

</asp:Content>

組態檔.aspx.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using InterviewPrepration.BAL;
using InterviewPrepration.ENT;
using InterviewPrepration.DAL;
using System.Data.SqlTypes;

public partial class AdminSide_Profile : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (Session["UserID"] != null)
        {
            UserBAL baluser = new UserBAL();
            UserENT entuser = new UserENT();

            entuser = baluser.SelectByID(Convert.ToInt32(Session["UserID"].ToString().Trim()));

            txtName.Text = entuser.User_Name.Value.ToString();
            txtMobileNumber.Text = entuser.ContactNo.Value.ToString();
            txtEmail.Text = entuser.Email_ID.Value.ToString();
            txtPassword.Text = entuser.Password.Value.ToString();
            lblUser.EnableViewState = true;
            lblUser.Text = entuser.User_Name.Value.ToString();
        }
        if (Session["UserID"] == null)
        {
            Response.Redirect("~/AdminSide/Login.aspx");
        }
    }

    protected void btnSave_Click(object sender, EventArgs e)
    {
        String err = "";
        if (txtName.Text.Trim() == "")
        {
            err  = "Please Enter Name";

        }
        if (txtEmail.Text.Trim() == "")
        {
            err  = "Please Enter EmailId";
        }
        if (txtMobileNumber.Text.Trim() == "")
        {
            err  = "Please Enter Mobile Number";
        }

        if (err != "")
        {
            lblMessage.EnableViewState = true;
            lblMessage.Text = err.ToString();
        }

        UserENT entuser = new UserENT();
        if(txtName.Text.Trim() != "")
        {
            entuser.User_Name = txtName.Text.Trim();
        }
        if (txtMobileNumber.Text.Trim() != "")
        {
            entuser.ContactNo = txtMobileNumber.Text.Trim();
        }
        if (txtEmail.Text.Trim() != "")
        {
            entuser.Email_ID = txtEmail.Text.Trim();
        }
        if(txtPassword.Text.Trim() != "")
        {
            entuser.Password = txtPassword.Text.Trim();
        }
        if(Session["UserID"] != null)
        {
            entuser.User_ID = Convert.ToInt32(Session["UserID"].ToString());
        }

        UserBAL baluser = new UserBAL();
        if (baluser.Update(entuser))
        {
            lblMessage.EnableViewState = true;
            lblMessage.Text = "Updated Sucessfully";
        }
    }
}

在特定部分

protected void btnSave_Click(object sender, EventArgs e)
    {
      
        UserENT entuser = new UserENT();
        if(txtName.Text.Trim() != "")
        {
            entuser.User_Name = txtName.Text.Trim();
        }
        if (txtMobileNumber.Text.Trim() != "")
        {
            entuser.ContactNo = txtMobileNumber.Text.Trim();
        }
        if (txtEmail.Text.Trim() != "")
        {
            entuser.Email_ID = txtEmail.Text.Trim();
        }
        if(txtPassword.Text.Trim() != "")
        {
            entuser.Password = txtPassword.Text.Trim();
        }
        if(Session["UserID"] != null)
        {
            entuser.User_ID = Convert.ToInt32(Session["UserID"].ToString());
        } 
    }

BALUser.cs

 #region Update
    public Boolean Update(UserENT entuser)
    {
        UserDAL daluser = new UserDAL();
        if (daluser.PR_IP_User_UpdateByUserID(entuser))
        {
            return true;
        }
        else
        {
            Message = daluser.Message;
            return false;
        }
    }

這是一個由 profile.aspx.cs 呼叫的更新方法

DALUser.cs 執行操作（資料庫）的 DAL 檔案。

#region PR_IP_User_UpdateByUserID
        public Boolean PR_IP_User_UpdateByUserID(UserENT entuser)
        {
            using (SqlConnection objConn = new SqlConnection(ConnectionString))
            {
                objConn.Open();
                using (SqlCommand objCmd = objConn.CreateCommand())
                {
                    try
                    {
                        #region PrpepredCommand
                        objCmd.CommandType = CommandType.StoredProcedure;
                        objCmd.CommandText = "PR_IP_User_UpdateByUserID";
                        objCmd.Parameters.AddWithValue("@UserID", entuser.User_ID);
                        objCmd.Parameters.AddWithValue("@UserName", entuser.User_Name);
                        objCmd.Parameters.AddWithValue("@Password", entuser.Password);
                        objCmd.Parameters.AddWithValue("@EmailID", entuser.Email_ID);
                        objCmd.Parameters.AddWithValue("@ContactNo", entuser.ContactNo);
                        //objCmd.Parameters.AddWithValue("@IsAdmin", entuser.Is_Admin);
                        #endregion

                        objCmd.ExecuteNonQuery();

                        return true;
                    }
                    catch (Exception ex)
                    {
                        Message = ex.InnerException.Message;
                        return false;
                    }
                }
            }

            #endregion

ENTUser.cs檔案

這是用戶的 ent 檔案。

namespace InterviewPrepration.ENT
{
    public class UserENT : DataBaseConfig
    {
        #region Constructor
        public UserENT()
        {

        }
        #endregion

        #region User ID
        protected SqlInt32 _User_ID;

        public SqlInt32 User_ID
        {
            get
            {
                return _User_ID;
            }
            set
            {
                _User_ID = value;
            }
        }
        #endregion

        #region User_Name
        protected SqlString _User_Name;

        public SqlString User_Name
        {
            get
            {
                return _User_Name;
            }
            set
            {
                _User_Name = value;
            }
        }
        #endregion


        #region User_Name
        protected SqlString _Password;

        public SqlString Password
        {
            get
            {
                return _Password;
            }
            set
            {
                _Password = value;
            }
        }
        #endregion

        #region User_Name
        protected SqlString _ContactNo;

        public SqlString ContactNo
        {
            get
            {
                return _ContactNo;
            }
            set
            {
                _ContactNo = value;
            }
        }
        #endregion

        #region User_Name
        protected SqlString _Email_ID;

        public SqlString Email_ID
        {
            get
            {
                return _Email_ID;
            }
            set
            {
                _Email_ID = value;
            }
        }
        #endregion


        #region IsAdmin
        protected SqlBoolean _Is_Admin;

        public SqlBoolean Is_Admin
        {
            get
            {
                return _Is_Admin;
            }
            set
            {
                _Is_Admin = value;
            }
        }
        #endregion


    }
}

uj5u.com熱心網友回復：

我嘗試了if(!Page.IsPostBack)。我設定了 if 條件。因為在我點擊按鈕之前它已經著火了。

這是更新代碼：profile.aspx.cs

using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using InterviewPrepration.BAL;
using InterviewPrepration.ENT;
using InterviewPrepration.DAL;
using System.Data.SqlTypes;

public partial class AdminSide_Profile : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        btnSave.Attributes.Add("AutoPostback", "false");
        if (!Page.IsPostBack)
        {
            if (Session["UserID"] != null)
            {
                UserBAL baluser = new UserBAL();
                UserENT entuser = new UserENT();

                entuser = baluser.SelectByID(Convert.ToInt32(Session["UserID"].ToString().Trim()));

                txtName.Text = entuser.User_Name.Value.ToString();
                txtMobileNumber.Text = entuser.ContactNo.Value.ToString();
                txtEmail.Text = entuser.Email_ID.Value.ToString();
                txtPassword.Text = entuser.Password.Value.ToString();
                lblUser.EnableViewState = true;
                lblUser.Text = entuser.User_Name.Value.ToString();
            }
        }
        if (Session["UserID"] == null)
        {
            Response.Redirect("~/AdminSide/Login.aspx");
        }
    }

    protected void btnSave_Click(object sender, EventArgs e)
    {
        SqlString name, number, email, pass;
        SqlInt32 id;

        String err = "";
        if (txtName.Text.Trim() == "")
        {
            err  = "Please Enter Name";

        }
        if (txtEmail.Text.Trim() == "")
        {
            err  = "Please Enter EmailId";
        }
        if (txtMobileNumber.Text.Trim() == "")
        {
            err  = "Please Enter Mobile Number";
        }

        if (err != "")
        {
            lblMessage.EnableViewState = true;
            lblMessage.Text = err.ToString();
        }


        UserENT entuser = new UserENT();
        if (txtName.Text.Trim() != "")
        {
            entuser.User_Name = txtName.Text.Trim();
        }
        if (txtMobileNumber.Text.Trim() != "")
        {
            entuser.ContactNo = txtMobileNumber.Text.Trim();
        }
        if (txtEmail.Text.Trim() != "")
        {
            entuser.Email_ID  = txtEmail.Text.Trim();
        }
        if (txtPassword.Text.Trim() != "")
        {
            entuser.Password= txtPassword.Text.Trim();
        }
        if (Session["UserID"] != null)
        {
            entuser.User_ID = Convert.ToInt32(Session["UserID"].ToString());
        }


        

       


        UserBAL baluser = new UserBAL();
        if (baluser.Update(entuser))
        {
            lblMessage.EnableViewState = true;
            lblMessage.Text = "Updated Sucessfully";
        }

    }

    protected void btnUpdate_Click(object sender, EventArgs e)
    {

        txtName.ReadOnly = false;
        txtEmail.ReadOnly = false;
        txtMobileNumber.ReadOnly = false;
        txtPassword.ReadOnly = false;

    }
}

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