Question

我刚刚开始使用Visual Studio 2013 for web来创建一个使用空白表单的网站，我正在努力（我认为）是一个Access数据库连接。我已经创建了可以提取和更新数据库中的数据的表单，但是当我尝试使用文本框创建注册表单来插入数据时，我收到以下错误消息。我知道这段代码不是很好我刚刚开始学习这个！请有人帮帮我吗？

错误讯息：

System.ArgumentException：不支持关键字：'provider'。在 System.Data.Common.DbConnectionOptions.ParseInternal（哈希表 parsetable，String connectionString，Boolean buildChain，Hashtable 同义词，布尔值firstKey）at System.Data.Common.DbConnectionOptions..ctor（String connectionString， Hashtable的同义词，Boolean useOdbcRules）at System.Data.SqlClient.SqlConnectionString..ctor（字符串 connectionString）at System.Data.SqlClient.SqlConnectionFactory.CreateConnectionOptions（字符串 connectionString，DbConnectionOptions上一页）at System.Data.ProviderBase.DbConnectionFactory.GetConnectionPoolGroup（DbConnectionPoolKey key，DbConnectionPoolGroupOptions poolOptions，DbConnectionOptions＆amp; userConnectionOptions）at System.Data.SqlClient.SqlConnection.ConnectionString_Set（DbConnectionPoolKey 关键）at System.Data.SqlClient.SqlConnection.set_ConnectionString（String value）在System.Data.SqlClient.SqlConnection..ctor（String connectionString， SqlCredential凭证） System.Data.SqlClient.SqlConnection..ctor（String connectionString）at Registration.Button1_Click（Object sender，EventArgs e）in c：\ Users \ lou \ Documents \ Visual Studio 2013 \ WebSites \ BeautyExperts \ Registration.aspx.cs：第22行

Registion.aspx.cs代码：

    `enter code here`using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Web;
    using System.Web.UI;
    using System.Web.UI.WebControls;
    using System.Data.SqlClient;
    using System.Configuration;
    using System.Data.OleDb;

    public partial class Registration : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }
        protected void Button1_Click(object sender, EventArgs e)
        {

            try
            {
                SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["UsersConnectionString"].ConnectionString);
                conn.Open();

                string insertQuery = "insert into login (first_name,last_name) values (@first_name,@last_name)";

                SqlCommand com = new SqlCommand(insertQuery, conn);
                com.Parameters.AddWithValue("@first_name", TextBoxFirstName.Text);
                com.Parameters.AddWithValue("@last_name", TextBoxLastName.Text);


                com.ExecuteNonQuery();
                Response.Redirect("UsersGridView.aspx");
                Response.Write("Registration successful");
                conn.Close();
            }

            catch (Exception ex)
            {
                Response.Write("Error: " + ex.ToString());
            }
    }
}

配置文件：

<?xml version="1.0"?>
<!--
  For more information on how to configure your ASP.NET application, please visit
  http://go.microsoft.com/fwlink/?LinkId=169433
  -->
<configuration>
  <configSections>
    <!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
  </configSections>
  <connectionStrings>
    <add name="LoginConnectionString" connectionString="Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\Users\lou\Documents\BeautyExpertsDB.accdb" providerName="System.Data.OleDb"/>
    <add name="UsersConnectionString" connectionString="Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\Users\lou\Documents\BeautyExpertsDB.accdb" providerName="System.Data.OleDb"/>
    <add name="Users1ConnectionString" connectionString="Data Source=(LocalDB)\v11.0;AttachDbFilename=|DataDirectory|\BeautyExpertsDatabase.mdf;Integrated Security=True" providerName="System.Data.SqlClient"/>
  </connectionStrings>
  <system.web>
    <compilation debug="true" targetFramework="4.5">
      <assemblies>
        <add assembly="System.Web.Entity, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
        <add assembly="System.Data.Entity, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
      </assemblies>
    </compilation>
    <httpRuntime targetFramework="4.5"/>
  </system.web>
  <appSettings>
    <add key="ValidationSettings:UnobtrusiveValidationMode" value="None"/>
  </appSettings>
</configuration>

Answer 1

您正在使用SqlConnection访问Ole因此错误。更改您的C＃代码以使用OleDbConnection和相关命令，即OleDbCommand，它应该按预期工作。

using (OleDbConnection connection = new OleDbConnection("Your Connection String"))
{
   //Do something here 
}

进一步阅读here

.net＆amp;访问数据库连接问题？

1 个答案: