Question

我正在尝试将MS Access数据库连接到ASP.Net以获取数据。但是下面的错误不断弹出。我发现它与Web.config连接有关，但是我在做什么错，我仍然不知道？

错误-

strong textSystem.ArgumentException：不支持关键字：“ provider”。 System.Data.Common.DbConnectionOptions..ctor处的System.Data.Common.DbConnectionOptions.ParseInternal（Hashtable parsetable，String connectionString，Boolean buildChain，Hashtable同义词，Boolean firstKey）（System处的String.String.String，Hashtable同义词，Boolean useOdbcRules）位于System.Data.ProviderBase.DbConnectionFactory.GetConnectionPoolGroup（DbConnectionPoolKey键，DbConnectionPoolGroupOptions poolOptions，DbConnectionOptions＆userConnectionOptions）处的System.Data.SqlClient.SqlConnectionFactory.CreateConnectionOptions（String connectionString，DbConnectionOptions先前）的Data.SqlClient.SqlConnectionString..ctor（String connectionString） System.Data.SqlClient.SqlClient.SqlConnection..ctor处的System.Data.SqlClient.SqlConnection.set_ConnectionString（String值）处的System.Data.SqlClient.SqlConnection.ConnectionString_Set（DbConnectionPoolKey键）System.Data处的System.Data.SqlClient.SqlConnection..ctor（String connectionString，SqlCredential凭据） Dummy.Page_Lo上的SqlClient.SqlConnection..ctor（String connectionString） C：\ xyz \ Dummy.aspx.cs：第19行中的ad（Object sender，EventArgs e）

  <connectionStrings>
   <add name="MS_Access_DatabaseConnectionString" connectionString="Provider=Microsoft.Jet.OLEDB.4.0; Data Source=C:\\temp\\Microsoft Access Database\\MS_Access_Database.mdb;" providerName="System.Data.OleDb"  />
  </connectionStrings>

protected void Page_Load(object sender, EventArgs e)
    {
        string connectionString = ConfigurationManager.ConnectionStrings["MS_Access_DatabaseConnectionString"].ConnectionString;

    try
    {
        SqlConnection conn = new SqlConnection(connectionString);
        if (conn.State == ConnectionState.Closed)
        {
            conn.Open();
        }

        String sql = "SELECT [Bank], [Amount] FROM [BankDetails]";


        using (SqlCommand cmd = new SqlCommand(sql, conn))
        {
            using (SqlDataReader reader = cmd.ExecuteReader())
            {
                while (reader.Read())
                {

                    Response.Write("" + reader.GetString(0));
                }

            }
        }
    }
    catch (Exception ex)
    {
        Response.Write(ex);
    }

Answer 1

您应该使用SqlConnection而不是使用OleDbConnection，因为SqlConnection试图将您的连接字符串读取为SQL Server连接字符串而不是Access数据库1：

try
{
    OleDbConnection conn = new OleDbConnection(connectionString);
    if (conn.State == ConnectionState.Closed)
    {
        conn.Open();
    }

    String OleDb = "SELECT [Bank], [Amount] FROM [BankDetails]";


    using (OleDbCommand cmd = new OleDbCommand(OleDb, conn))
    {
        using (OleDbDataReader reader = cmd.ExecuteReader())
        {
            while (reader.Read())
            {
                Response.Write("" + reader.GetString(0));
            }

        }
    }
}
catch (Exception ex)
{
    Response.Write(ex);
}

Answer 2

使用System.Data.OleDb.OleDbConnection;添加到文件顶部，然后删除使用System.Data.SqlConnection;
将您的代码更改为。

using（OleDbConnection con = new OleDbConnection（connDB））//这是错误 { }

与ASP.NET的MS Access连接

2 个答案: