Question

我正在尝试开发一个使用C＃（Visual Studio 2010 Ultimate）连接到Progress Database（9.1E）的程序，但我首先需要从C＃程序获取Progress数据库的连接字符串

我尝试过以下操作，但是我没有成功建立与Progress数据库的连接。我不确定连接字符串应该是什么样子，但是在我开始扩展所有内容之前，这就是我所拥有的。另外，我不确定DSN名称应该是什么。

private void downloadData_Click(object sender, RoutedEventArgs e)
{
    try
    {
        string connectString = "DSN = QADDB; Host = ipaddress; DB = dbname; UID = user; PWD = password;";
        IDbConnection dbConn = new OdbcConnection(connectString);
        dbConn.Open();
        IDbCommand dbCommand = dbConn.CreateCommand();
        string sqlstr = "SELECT pt_part FROM pt_mstr";
        dbCommand.CommandText = sqlstr;
        IDataReader reader = dbCommand.ExecuteReader();
        while (reader.Read())
        {
            string part = (string)reader["pt_part"];
            gridview.Items.Add(part);
        }
        reader.Close();
        reader = null;
        dbCommand.Dispose();
        dbCommand = null;
        dbConn.Close();
        dbConn = null;
    }
    catch (Exception ex)
    {
        MessageBox.Show(ex.ToString());
    }
}

错误消息显示：

System.Data.Odbc.OdbcException（0X80131937）：ERROR [IM002] [Microsoft] [ODBC驱动程序管理器]未找到数据源名称，没有指定默认驱动程序

Answer 1

string connectString = "DSN=QADDB;uid=username;pwd=password;host=hostname;port=port#;db=dbname;";
using (OdbcConnection dbConn = new OdbcConnection(connectString));
{
    try
    {
        dbConn.Open();
    } catch (Exception)
    {
        mRtnVar = "Couldn't Connect";
        return mRtnVar
    }   
    string sqlstr = string.Format(@"SELECT ""FieldName"" FROM PUB.DataBase WHERE ""FieldName"" = 'value'");
    using (OdbcCommand comm = new OdbcCommand(sqlstr, dbConn))
    {
        using (OdbcDataReader reader = dbConn.ExecuteReader())
        {
            if (reader.Read())
            {
                mRtnVar = reader["FieldName"].ToString();
            }
        }
    } 
    return mRtnVar
}

Answer 2

在您的连接字符串中，设置Progress数据库的端口：

PORT = 20931;

C＃连接到进度数据库

2 个答案: