我已经在C＃的SQL数据库中开发了一个数据插入代码，但是它没有工作，它显示“已成功添加”，但实际上它没有插入。请帮帮我。我的错误是什么，或者我的代码中有什么问题？我一次又一次检查我的代码，但仍然找不到错误。这是我的代码：
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.SqlClient;
using System.Configuration;
using System.IO;
public partial class Provide_Notes : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if(!IsPostBack)
{
if(Session["StaffUsername"]!=null)
{
lblProfilePic.Text = Session["StaffUsername"].ToString();
string CS = ConfigurationManager.ConnectionStrings["SCDB"].ConnectionString;
using (SqlConnection con = new SqlConnection(CS))
{
con.Open();
SqlCommand cmd = new SqlCommand("SELECT Photo_Binary FROM Staff_Table WHERE Username=@SUsername",con);
cmd.Parameters.AddWithValue("@SUsername",lblProfilePic.Text);
SqlDataReader sdr = cmd.ExecuteReader();
if(sdr.HasRows)
{
while(sdr.Read())
{
byte[] imagedata = (byte[])sdr["Photo_Binary"];
string image = Convert.ToBase64String(imagedata, 0, imagedata.Length);
Image3.ImageUrl = "data:Img/png;base64," + image;
}
}
}
}
else
{
Response.Redirect("index.aspx");
}
}
}
protected void LinkButton1_Click(object sender, EventArgs e)
{
string CS = ConfigurationManager.ConnectionStrings["SCDB"].ConnectionString;
using (SqlConnection con = new SqlConnection(CS))
{
con.Open();
string filePath = FileUpload1.PostedFile.FileName;
string fileName = Path.GetFileName(filePath);
string ext = Path.GetExtension(fileName);
string contentType = String.Empty;
switch(ext)
{
case ".docx":
contentType = "application/vnd.ms-word";
break;
case ".doc":
contentType = "application/vnd.ms-word";
break;
case ".xls":
contentType = "application/vnd.ms-excel";
break;
case ".xlsx":
contentType = "appliacation/vnd.ms-excel";
break;
case ".pdf":
contentType = "application/pdf";
break;
}
if(contentType!=String.Empty)
{
Stream fs = FileUpload1.PostedFile.InputStream;
BinaryReader br = new BinaryReader(fs);
Byte[] bytes = br.ReadBytes((Int32)fs.Length);
SqlCommand cmd = new SqlCommand("INSERT INTO Notes VALUES (@Note_Name,@Description,@Name,@Content_Type,@Data)",con);
cmd.Parameters.AddWithValue("@Note_Name",TextBox1.Text.Trim());
cmd.Parameters.AddWithValue("@Description", TextBox2.Text.Trim());
cmd.Parameters.Add("@Name", SqlDbType.NVarChar).Value = fileName;
cmd.Parameters.Add("@Content_Description", SqlDbType.NVarChar).Value = contentType;
cmd.Parameters.Add("@Data", SqlDbType.VarBinary).Value = bytes;
Response.Write("<script>alert('Note added !')</script>");
}
}
}
protected void btnLogout_Click(object sender, EventArgs e)
{
Session.Abandon();
Session.RemoveAll();
Response.Redirect("Logout.aspx");
}
}
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Provide_Notes_FY.aspx.cs" Inherits="Provide_Notes" EnableEventValidation="false" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>Staff Access | Dashboard</title>
<!-- Tell the browser to be responsive to screen width -->
<meta content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no" name="viewport">
<!-- Bootstrap 3.3.6 -->
<link rel="stylesheet" href="bootstrap/css/bootstrap.min.css">
<!-- Font Awesome -->
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.5.0/css/font-awesome.min.css">
<!-- Ionicons -->
<link rel="stylesheet" href="StyleSheet.css" />
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.4.0/css/font-awesome.min.css">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/ionicons/2.0.1/css/ionicons.min.css">
<!-- Theme style -->
<link rel="stylesheet" href="dist/css/AdminLTE.min.css">
<!-- AdminLTE Skins. Choose a skin from the css/skins
folder instead of downloading all of them to reduce the load. -->
<link rel="stylesheet" href="dist/css/skins/_all-skins.min.css">
<!-- iCheck -->
<link rel="stylesheet" href="plugins/iCheck/flat/blue.css">
<!-- Morris chart -->
<link rel="stylesheet" href="plugins/morris/morris.css">
<!-- jvectormap -->
<link rel="stylesheet" href="plugins/jvectormap/jquery-jvectormap-1.2.2.css">
<!-- Date Picker -->
<link rel="stylesheet" href="plugins/datepicker/datepicker3.css">
<!-- Daterange picker -->
<link rel="stylesheet" href="plugins/daterangepicker/daterangepicker.css">
<!-- bootstrap wysihtml5 - text editor -->
<link rel="stylesheet" href="plugins/bootstrap-wysihtml5/bootstrap3-wysihtml5.min.css">
<!-- HTML5 Shim and Respond.js IE8 support of HTML5 elements and media queries -->
<!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
<!--[if lt IE 9]>
<script src="https://oss.maxcdn.com/html5shiv/3.7.3/html5shiv.min.js"></script>
<script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
<![endif]-->
</head>
<body class="hold-transition skin-blue sidebar-mini">
<form runat="server">
<div class="wrapper">
<header class="main-header">
<!-- Logo -->
<a href="adminTS.aspx" class="logo">
<!-- mini logo for sidebar mini 50x50 pixels -->
<span class="logo-mini"><b>S.</b>A</span>
<!-- logo for regular state and mobile devices -->
<span class="logo-lg"><b>Staff</b> Access</span>
</a>
<!-- Header Navbar: style can be found in header.less -->
<nav class="navbar navbar-static-top">
<!-- Sidebar toggle button-->
<a href="#" class="sidebar-toggle" data-toggle="offcanvas" role="button">
<span class="sr-only">Toggle navigation</span>
</a>
<div class="navbar-custom-menu">
<ul class="nav navbar-nav">
<!-- Messages: style can be found in dropdown.less-->
<li class="dropdown messages-menu">
<asp:LinkButton ID="btnLogout" runat="server" OnClick="btnLogout_Click" CausesValidation="false">
Logout <i class="fa fa-sign-out"></i>
</asp:LinkButton>
</li>
<!-- Control Sidebar Toggle Button -->
<li>
<a href="#" data-toggle="control-sidebar"><i class="fa fa-gears"></i></a>
</li>
</ul>
</div>
</nav>
</header>
<!-- Left side column. contains the logo and sidebar -->
<aside class="main-sidebar">
<!-- sidebar: style can be found in sidebar.less -->
<section class="sidebar">
<!-- Sidebar user panel -->
<div class="user-panel">
<div class="pull-left image">
<!--<img src="dist/img/user2-160x160.jpg" class="img-circle" alt="User Image">-->
<asp:Image ID="Image3" runat="server" CssClass="img-circle" />
</div>
<div class="pull-left info">
<asp:Label ID="lblProfilePic" runat="server" Text=""></asp:Label>
<a href="#"><i class="fa fa-circle text-success"></i> Online</a>
</div>
</div>
<!-- search form -->
<form action="#" method="get" class="sidebar-form">
</form>
<!-- /.search form -->
<!-- sidebar menu: : style can be found in sidebar.less -->
<ul class="sidebar-menu">
<li class="header">MAIN NAVIGATION</li>
<li class="active treeview">
<a href="adminTS.aspx" id="Staff_Control">
<i class="fa fa-dashboard"></i><span>Staff Control
</span>
</a>
<!--<ul class="treeview-menu">
<li class="active"><a href="index.html"><i class="fa fa-circle-o"></i> Dashboard v1</a></li>
<li><a href="index2.html"><i class="fa fa-circle-o"></i> Dashboard v2</a></li>
</ul>-->
</li>
<li id="li" class="treeview">
<a href="#">
<i class="fa fa-user"></i>
<span>View HOD</span>
</a>
</li>
<li>
<a href="pages/widgets.html">
<i class="fa fa-users"></i> <span>Staff</span>
<span class="pull-right-container">
<i class="fa fa-angle-left pull-right"></i>
</span>
</a>
<ul class="treeview-menu">
<li><a href="#"><i class="fa fa-circle-o"></i>First Year</a></li>
<li><a href="#"><i class="fa fa-circle-o"></i>Second Year</a></li>
<li><a href="#"><i class="fa fa-circle-o"></i>Third Year</a></li>
</ul>
<li class="treeview">
<a href="#">
<i class="fa fa-info-circle"></i>
<span>Student Details</span>
<span class="pull-right-container">
<i class="fa fa-angle-left pull-right"></i>
</span>
</a>
<ul class="treeview-menu">
<li><a href="pages/charts/morris.html"><i class="fa fa-circle-o"></i> First Year</a></li>
<li><a href="pages/charts/flot.html"><i class="fa fa-circle-o"></i> Second Year</a></li>
<li><a href="pages/charts/inline.html"><i class="fa fa-circle-o"></i>Third Year</a></li>
</ul>
</li>
<li class="treeview">
<a href="">
<i class="fa fa-edit"></i>
<span>Publish CT Result</span>
<span class="pull-right-container">
<i class="fa fa-angle-left pull-right"></i>
</span>
</a>
<ul class="treeview-menu">
<li><a href="#"><i class="fa fa-circle-o"></i>First Year</a></li>
<li><a href="#"><i class="fa fa-circle-o"></i>Second Year</a></li>
<li><a href="#"><i class="fa fa-circle-o"></i>Third Year</a></li>
</ul>
</li>
<li class="treeview">
<a href="#">
<i class="fa fa-table"></i>
<span>Attendance</span>
<span class="pull-right-container">
<i class="fa fa-angle-left pull-right"></i>
</span>
</a>
<ul class="treeview-menu">
<li><a href="#"><i class="fa fa-circle-o"></i>First Year</a></li>
<li><a href="#"><i class="fa fa-circle-o"></i>Second Year</a></li>
<li><a href="#"><i class="fa fa-circle-o"></i>Third Year</a></li>
</ul>
</li>
<li class="treeview">
<a href="#">
<i class="fa fa-book"></i>
<span>Provide Notes</span>
<span class="pull-right-container">
<i class="fa fa-angle-left pull-right"></i>
</span>
</a>
<ul class="treeview-menu">
<li><a href="#"><i class="fa fa-circle-o"></i>First Year</a></li>
<li><a href="#"><i class="fa fa-circle-o"></i>Second Year</a></li>
<li><a href="#"><i class="fa fa-circle-o"></i>Third Year</a></li>
</ul>
</li>
<li class="treeview">
<a href="#">
<i class="fa fa-bell"></i>
<span>Provide Notice</span>
</a>
</li>
<li class="treeview">
<a href="#">
<i class="fa fa-phone"></i>
<span>Contact Parents</span>
<span class="pull-right-container">
<i class="fa fa-angle-left pull-right"></i>
</span>
</a>
<ul class="treeview-menu">
<li><a href="#"><i class="fa fa-circle-o"></i>First Year</a></li>
<li><a href="#"><i class="fa fa-circle-o"></i>Second Year</a></li>
<li><a href="#"><i class="fa fa-circle-o"></i>Third Year</a></li>
</ul>
</li>
<li class="treeview">
<a href="#">
<i class="fa fa-question"></i>
<span>Forum Discussion</span>
</a>
</li>
</section>
<!-- /.sidebar -->
</aside>
<!-- Content Wrapper. Contains page content -->
<div class="content-wrapper">
<!-- Content Header (Page header) -->
<section class="content-header">
<!--<h1>
Dashboard
<small>Control panel</small>
</h1>-->
</section>
<!-- Main content -->
<section class="content">
<div class="container">
<div>
<h2>
<asp:Label ID="lbl1" runat="server" Text="First Year"></asp:Label>
</h2>
</div>
<div>
<div class="input-group">
<span class="input-group-addon">Note</span>
<asp:TextBox ID="TextBox1" runat="server" CssClass="form-control" placeholder="Note Name" Text=""></asp:TextBox>
</div>
<br />
<div class="input-group">
<span class="input-group-addon">Description</span>
<asp:TextBox ID="TextBox2" runat="server" CssClass="form-control" placeholder="Note Description" TextMode="MultiLine" Text=""></asp:TextBox>
</div>
<br />
<div style="color:cornflowerblue"></div>
<asp:FileUpload ID="FileUpload1" runat="server" CssClass="btn btn-primary" />
<br />
<asp:LinkButton ID="LinkButton1" runat="server" CssClass="btn btn-primary" OnClick="LinkButton1_Click">Upload <span class="fa fa-upload"></span></asp:LinkButton>
</div>
</div>
</section>
<!-- /.content -->
</div>
<!-- /.content-wrapper -->
<footer class="main-footer">
<div class="pull-right hidden-xs">
<b>Version</b> 2.3.8
</div>
<strong>Copyright © 2014-2016 <a href="http://almsaeedstudio.com">Almsaeed Studio</a>.</strong> All rights
reserved.
</footer>
<!-- Control Sidebar -->
<aside class="control-sidebar control-sidebar-dark">
<!-- Create the tabs -->
<ul class="nav nav-tabs nav-justified control-sidebar-tabs">
<li><a href="#control-sidebar-home-tab" data-toggle="tab"><i class="fa fa-home"></i></a></li>
<li><a href="#control-sidebar-settings-tab" data-toggle="tab"><i class="fa fa-gears"></i></a></li>
</ul>
<!-- Tab panes -->
<div class="tab-content">
<!-- Home tab content -->
<div class="tab-pane" id="control-sidebar-home-tab">
<h3 class="control-sidebar-heading">Recent Activity</h3>
<ul class="control-sidebar-menu">
<li>
<a href="javascript:void(0)">
<i class="menu-icon fa fa-birthday-cake bg-red"></i>
<div class="menu-info">
<h4 class="control-sidebar-subheading">Langdon's Birthday</h4>
<p>Will be 23 on April 24th</p>
</div>
</a>
</li>
<li>
<a href="javascript:void(0)">
<i class="menu-icon fa fa-user bg-yellow"></i>
<div class="menu-info">
<h4 class="control-sidebar-subheading">Frodo Updated His Profile</h4>
<p>New phone +1(800)555-1234</p>
</div>
</a>
</li>
<li>
<a href="javascript:void(0)">
<i class="menu-icon fa fa-envelope-o bg-light-blue"></i>
<div class="menu-info">
<h4 class="control-sidebar-subheading">Nora Joined Mailing List</h4>
<p>[email protected]</p>
</div>
</a>
</li>
<li>
<a href="javascript:void(0)">
<i class="menu-icon fa fa-file-code-o bg-green"></i>
<div class="menu-info">
<h4 class="control-sidebar-subheading">Cron Job 254 Executed</h4>
<p>Execution time 5 seconds</p>
</div>
</a>
</li>
</ul>
<!-- /.control-sidebar-menu -->
<h3 class="control-sidebar-heading">Tasks Progress</h3>
<ul class="control-sidebar-menu">
<li>
<a href="javascript:void(0)">
<h4 class="control-sidebar-subheading">
Custom Template Design
<span class="label label-danger pull-right">70%</span>
</h4>
<div class="progress progress-xxs">
<div class="progress-bar progress-bar-danger" style="width: 70%"></div>
</div>
</a>
</li>
<li>
<a href="javascript:void(0)">
<h4 class="control-sidebar-subheading">
Update Resume
<span class="label label-success pull-right">95%</span>
</h4>
<div class="progress progress-xxs">
<div class="progress-bar progress-bar-success" style="width: 95%"></div>
</div>
</a>
</li>
<li>
<a href="javascript:void(0)">
<h4 class="control-sidebar-subheading">
Laravel Integration
<span class="label label-warning pull-right">50%</span>
</h4>
<div class="progress progress-xxs">
<div class="progress-bar progress-bar-warning" style="width: 50%"></div>
</div>
</a>
</li>
<li>
<a href="javascript:void(0)">
<h4 class="control-sidebar-subheading">
Back End Framework
<span class="label label-primary pull-right">68%</span>
</h4>
<div class="progress progress-xxs">
<div class="progress-bar progress-bar-primary" style="width: 68%"></div>
</div>
</a>
</li>
</ul>
<!-- /.control-sidebar-menu -->
</div>
<!-- /.tab-pane -->
<!-- Stats tab content -->
<div class="tab-pane" id="control-sidebar-stats-tab">Stats Tab Content</div>
<!-- /.tab-pane -->
<!-- Settings tab content -->
<div class="tab-pane" id="control-sidebar-settings-tab">
<form method="post">
<h3 class="control-sidebar-heading">General Settings</h3>
<div class="form-group">
<label class="control-sidebar-subheading">
Report panel usage
<input type="checkbox" class="pull-right" checked>
</label>
<p>
Some information about this general settings option
</p>
</div>
<!-- /.form-group -->
<div class="form-group">
<label class="control-sidebar-subheading">
Allow mail redirect
<input type="checkbox" class="pull-right" checked>
</label>
<p>
Other sets of options are available
</p>
</div>
<!-- /.form-group -->
<div class="form-group">
<label class="control-sidebar-subheading">
Expose author name in posts
<input type="checkbox" class="pull-right" checked>
</label>
<p>
Allow the user to show his name in blog posts
</p>
</div>
<!-- /.form-group -->
<h3 class="control-sidebar-heading">Chat Settings</h3>
<div class="form-group">
<label class="control-sidebar-subheading">
Show me as online
<input type="checkbox" class="pull-right" checked>
</label>
</div>
<!-- /.form-group -->
<div class="form-group">
<label class="control-sidebar-subheading">
Turn off notifications
<input type="checkbox" class="pull-right">
</label>
</div>
<!-- /.form-group -->
<div class="form-group">
<label class="control-sidebar-subheading">
Delete chat history
<a href="javascript:void(0)" class="text-red pull-right"><i class="fa fa-trash-o"></i></a>
</label>
</div>
<!-- /.form-group -->
</form>
</div>
<!-- /.tab-pane -->
</div>
</aside>
<!-- /.control-sidebar -->
<!-- Add the sidebar's background. This div must be placed
immediately after the control sidebar -->
<div class="control-sidebar-bg"></div>
</div>
<!-- ./wrapper -->
<!-- jQuery 2.2.3 -->
<script src="plugins/jQuery/jquery-2.2.3.min.js"></script>
<script>
$(document).ready(function () {
$("#HOD_Panel").click(function () {
$("#Add_HOD").load("AddHOD/ahod.aspx");
});
});
$(document).ready(function () {
$("#HOD_Panel").click(function () {
$("#Remove_HOD").load("AddHOD/RemoveHOD.aspx");
});
});
</script>
<!-- jQuery UI 1.11.4 -->
<script src="https://code.jquery.com/ui/1.11.4/jquery-ui.min.js"></script>
<!-- Resolve conflict in jQuery UI tooltip with Bootstrap tooltip -->
<script>
$.widget.bridge('uibutton', $.ui.button);
</script>
<!-- Bootstrap 3.3.6 -->
<script src="bootstrap/js/bootstrap.min.js"></script>
<!-- Morris.js charts -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/raphael/2.1.0/raphael-min.js"></script>
<script src="plugins/morris/morris.min.js"></script>
<!-- Sparkline -->
<script src="plugins/sparkline/jquery.sparkline.min.js"></script>
<!-- jvectormap -->
<script src="plugins/jvectormap/jquery-jvectormap-1.2.2.min.js"></script>
<script src="plugins/jvectormap/jquery-jvectormap-world-mill-en.js"></script>
<!-- jQuery Knob Chart -->
<script src="plugins/knob/jquery.knob.js"></script>
<!-- daterangepicker -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.11.2/moment.min.js"></script>
<script src="plugins/daterangepicker/daterangepicker.js"></script>
<!-- datepicker -->
<script src="plugins/datepicker/bootstrap-datepicker.js"></script>
<!-- Bootstrap WYSIHTML5 -->
<script src="plugins/bootstrap-wysihtml5/bootstrap3-wysihtml5.all.min.js"></script>
<!-- Slimscroll -->
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<script src="plugins/fastclick/fastclick.js"></script>
<!-- AdminLTE App -->
<script src="dist/js/app.min.js"></script>
<!-- AdminLTE dashboard demo (This is only for demo purposes) -->
<script src="dist/js/pages/dashboard.js"></script>
<!-- AdminLTE for demo purposes -->
<script src="dist/js/demo.js"></script>
</form>
</body>
</html>
ID int primary key identity,
Note_Name nvarchar(max) not null,
Description nvarchar(max) not null,
Name nvarchar(max),
Content_Type nvarchar(max),
Data varbinary(max)
因为你没有调用ExecuteNonQuery()方法：
SqlCommand cmd = new SqlCommand("INSERT INTO Notes VALUES (@Note_Name,@Description,@Name,@Content_Type,@Data)",con);
cmd.Parameters.AddWithValue("@Note_Name",TextBox1.Text.Trim());
cmd.Parameters.AddWithValue("@Description", TextBox2.Text.Trim());
cmd.Parameters.Add("@Name", SqlDbType.NVarChar).Value = fileName;
cmd.Parameters.Add("@Content_Description", SqlDbType.NVarChar).Value = contentType;
cmd.Parameters.Add("@Data", SqlDbType.VarBinary).Value = bytes;
int recordsAffected = cmd.ExecuteNonQuery();