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我有一個編輯帳戶頁面，用於預加載用戶帳戶信息，並且他們可以在需要時進行編輯。該代碼沒有顯示任何錯誤，但它始終運行catch並不保存新數據。這是代碼。所以基本上查詢不會更新記錄。更新查詢無法在編輯帳戶頁面上工作
<%@ Page Title="" Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true" CodeFile="EditAccount.aspx.cs" Inherits="EditAccount" %>
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<table style="width: 100%">
<tr>
<td style="text-align: center">
User Information : Edit
</td>
</tr>
</table>
<table style="width:100%">
<tr>
<td style="width: 25%">
<asp:Label ID="lblUsername" runat="server" Text="Username : "></asp:Label>
</td>
<td style="width: 75%">
<asp:TextBox ID="txtUsername" runat="server" Text="test"></asp:TextBox>
</td>
</tr>
<tr>
<td style="width: 25%">
<asp:Label ID="lblFirstName" runat="server" Text="First Name : "></asp:Label>
</td>
<td style="width: 75%">
<asp:TextBox ID="txtFirstName" runat="server" Text="test"></asp:TextBox>
</td>
</tr>
<tr>
<td style="width: 25%">
<asp:Label ID="lblLastName" runat="server" Text="Last Name : "></asp:Label>
</td>
<td style="width: 75%">
<asp:TextBox ID="txtLastName" runat="server" Text="test"></asp:TextBox>
</td>
</tr>
<tr>
<td style="width: 25%">
<asp:Label ID="lblAddress" runat="server" Text="Address : "></asp:Label>
</td>
<td style="width: 75%">
<asp:TextBox ID="txtAddress" runat="server" Text="test"></asp:TextBox>
</td>
</tr>
<tr>
<td style="width: 25%">
<asp:Label ID="lblCity" runat="server" Text="City : "></asp:Label>
</td>
<td style="width: 75%">
<asp:TextBox ID="txtCity" runat="server" Text="test"></asp:TextBox>
</td>
</tr>
<tr>
<td style="width: 25%">
<asp:Label ID="lblState" runat="server" Text="State : "></asp:Label>
</td>
<td style="width: 75%">
<asp:DropDownList ID="ddState" OnSelectedIndexChanged="btnSubmit_Click" runat="server" DataSourceID="SqlDataSource1" DataTextField="State" DataValueField="State" Height="17px" Width="148px" >
</asp:DropDownList>
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:ConnectionString %>" ProviderName="<%$ ConnectionStrings:ConnectionString.ProviderName %>" SelectCommand="SELECT [State] FROM [States]"></asp:SqlDataSource>
</td>
</tr>
<tr>
<td style="width: 25%">
<asp:Label ID="lblZip" runat="server" Text="Zip : "></asp:Label>
</td>
<td style="width: 75%">
<asp:TextBox ID="txtZip" runat="server" Text="test"></asp:TextBox>
</td>
</tr>
<tr>
<td style="width: 25%">
<asp:Label ID="lblPhone" runat="server" Text="Phone# : "></asp:Label>
</td>
<td style="width: 75%">
<asp:TextBox ID="txtPhone" runat="server" Text="test"></asp:TextBox>
</td>
</tr>
<tr>
<td style="width: 25%">
<asp:Label ID="lblEmail" runat="server" Text="E-Mail : "></asp:Label>
</td>
<td style="width: 75%">
<asp:TextBox ID="txtEmail" runat="server" Text="test"></asp:TextBox>
</td>
</tr>
</table>
<table style="width: 100%">
<tr>
<td style ="width: 14%">
<asp:Button ID="btnSubmit" runat="server" Text="Submit" OnClick="btnSubmit_Click" />
</td>
<td>
<asp:Button ID="btnCancel" runat="server" Text="Cancel" OnClick="btnCancel_Click" />
</td>
</tr>
</table>
</asp:Content>
這裏是後面的C＃代碼。提交按鈕點擊是查詢不起作用。
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.OleDb;
using System.Configuration;
public partial class EditAccount : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (Session["New"] != null)
{
txtUsername.Text = Session["New"].ToString();
OleDbConnection conn = new OleDbConnection(ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString);
conn.Open();
string getfirstname = "select UserFirstName from Users where Username = '" + Session["New"].ToString() + "'";
OleDbCommand firstcmd = new OleDbCommand(getfirstname, conn);
string firstName = firstcmd.ExecuteScalar().ToString();
txtFirstName.Text = firstName;
string getlastname = "select UserLastName from Users where Username = '" + Session["New"].ToString() + "'";
OleDbCommand lastcmd = new OleDbCommand(getlastname, conn);
string LastName = lastcmd.ExecuteScalar().ToString();
txtLastName.Text = LastName;
string getaddress = "select ShipAddress from Users where Username = '" + Session["New"].ToString() + "'";
OleDbCommand addresscmd = new OleDbCommand(getaddress, conn);
string Address = addresscmd.ExecuteScalar().ToString();
txtAddress.Text = Address;
string getcity = "select ShipCity from Users where Username = '" + Session["New"].ToString() + "'";
OleDbCommand citycmd = new OleDbCommand(getcity, conn);
string City = citycmd.ExecuteScalar().ToString();
txtCity.Text = City;
string getstate = "select ShipState from Users where Username = '" + Session["New"].ToString() + "'";
OleDbCommand statecmd = new OleDbCommand(getstate, conn);
string State = statecmd.ExecuteScalar().ToString();
ddState.Text = State;
string getzip = "select ShipZip from Users where Username = '" + Session["New"].ToString() + "'";
OleDbCommand zipcmd = new OleDbCommand(getzip, conn);
string Zip = zipcmd.ExecuteScalar().ToString();
txtZip.Text = Zip;
string getphone = "select UserPhone from Users where Username = '" + Session["New"].ToString() + "'";
OleDbCommand phonecmd = new OleDbCommand(getphone, conn);
string Phone = phonecmd.ExecuteScalar().ToString();
txtPhone.Text = Phone;
string getemail = "select UserEmail from Users where Username = '" + Session["New"].ToString() + "'";
OleDbCommand emailcmd = new OleDbCommand(getemail, conn);
string Email = emailcmd.ExecuteScalar().ToString();
txtEmail.Text = Email;
conn.Close();
Response.Write(txtUsername.Text);
}
else
{
Response.Redirect("LogIn.aspx");
}
}
protected void btnSubmit_Click(object sender, EventArgs e)
{
try
{
OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0; Data Source = '" + Server.MapPath("App_Data/WSC_DB.mdb") + "'; Persist Security Info=False");
using (OleDbCommand cmd = new OleDbCommand("update Users set UserFirstName = @FirstName, UserLastName = @LastName, ShipAddress = @Address, ShipCity = @City, ShipState = @State, ShipZip = @Zip, UserPhone = @Phone, UserEmail = @Email, UserName = @Username where UserName = '" + Session["New"].ToString() + "'", conn))
{
cmd.Parameters.AddWithValue("@FirstName", txtFirstName.Text);
cmd.Parameters.AddWithValue("@LastName", txtLastName.Text);
cmd.Parameters.AddWithValue("@Address", txtAddress.Text);
cmd.Parameters.AddWithValue("@City", txtCity.Text);
cmd.Parameters.AddWithValue("@State", ddState.SelectedValue.ToString());
cmd.Parameters.AddWithValue("@Zip", txtZip.Text);
cmd.Parameters.AddWithValue("@Phone", txtPhone.Text);
cmd.Parameters.AddWithValue("@Email", txtEmail.Text);
cmd.Parameters.AddWithValue("@Username", txtUsername.Text);
conn.Open();
cmd.ExecuteNonQuery();
conn.Close();
Response.Redirect("ViewAccount.aspx");
}
}
catch (Exception ex)
{
Response.Write("Error: " + ex.ToString());
}
}
protected void btnCancel_Click(object sender, EventArgs e)
{
Response.Redirect("ViewAccount.aspx");
}
}
的是什麼**異常消息**？ –
它沒有向你顯示任何錯誤的原因是，你正在捕捉異常，使用'Response.Write'以一種甚至可能不會顯示在你的頁面上的方式編寫它們（嘗試圍繞'
它沒有給我任何異常消息，但只要代碼到達Response.Redirect（ViewAccount.aspx）它就會發送到catch – user2526337