在我的代码中出现“找不到可安装的ISAM”错误的原因是什么？

Question

我不明白为什么我会在这里得到一个错误：Could not find installable ISAM。我正在尝试添加数据到Access文件，这似乎有一个问题。

我不确定为什么这不起作用，因为我在删除每个条目时都使用了almoust严格的代码。

这里有什么明显的错误吗？

        // Creating a query for each type of data.
        string sqlPC = @"INSERT INTO PersonalData([Type], [UserName], [Password]) 
                         VALUES(@Type, @UserName, @Password)";
        string sqlWS = @"INSERT INTO PersonalData([Type], [URL], [UserName], [Password]) 
                         VALUES(@Type, @URL, @UserName, @Password)";
        string sqlSC = @"INSERT INTO PersonalData([Type], [SoftwareName], [SerialCode]) 
                         VALUES(@Type, @SoftwareName, @SerialCode)";

    HashPhrase hashPhrase = new HashPhrase();
    Security security = new Security();

    private void InsertData(string sql)
    {
        string hashShortPass = hashPhrase.ShortHash(pass);

        string connectionString = 
            @"Provider=Microsoft.ACE.OLEDB.12.0; Data Source={0};
              Persist Security Info=False; Jet OLEDB: Database Password={1};";

        using (OleDbConnection connection = new OleDbConnection())
        {
            connection.ConnectionString = 
                string.Format(connectionString, filePath, hashShortPass);

            using (OleDbCommand command = new OleDbCommand(sql, connection))
            {
                OleDbParameter prmType = new OleDbParameter
                    ("@Type", security.EncryptAES(cmbType.Text, pass, user));

                command.Parameters.Add(prmType);

                if (cmbType.SelectedIndex == 0)
                {
                    OleDbParameter prmUserName = new OleDbParameter
                        ("@UserName", security.EncryptAES
                            (txtUserName.Text.Trim(), pass, user));
                    OleDbParameter prmPassword = new OleDbParameter
                        ("@Password", security.EncryptAES
                            (txtPassword.Text, pass, user));

                    command.Parameters.Add(prmUserName);
                    command.Parameters.Add(prmPassword);
                }
                else if (cmbType.SelectedIndex == 1)
                {
                    OleDbParameter prmURL = new OleDbParameter
                        ("@URL", security.EncryptAES
                            (txtURL.Text.Trim(), pass, user));
                    OleDbParameter prmUserName = new OleDbParameter
                        ("@UserName", security.EncryptAES
                            (txtUserName.Text.Trim(), pass, user));
                    OleDbParameter prmPassword = new OleDbParameter
                        ("@Password", security.EncryptAES
                            (txtPassword.Text, pass, user));

                    command.Parameters.Add(prmURL);
                    command.Parameters.Add(prmUserName);
                    command.Parameters.Add(prmPassword);
                }
                else if (cmbType.SelectedIndex == 2)
                {
                    OleDbParameter prmSoftwareName = new OleDbParameter
                        ("@SoftwareName", security.EncryptAES
                            (txtSoftwareName.Text.Trim(), pass, user));
                    OleDbParameter prmSerialCode = new OleDbParameter
                        ("@SerialCode", security.EncryptAES
                            (txtSerialCode.Text.Trim(), pass, user));

                    command.Parameters.Add(prmSoftwareName);
                    command.Parameters.Add(prmSerialCode);
                }

                try
                {
                    connection.Open();
                    command.ExecuteNonQuery();
                }
                catch (Exception ex)
                {
                    MessageBox.Show("Error: " + ex.Message);
                }
            }
        }
    }

Answer 1

我改变了：

string connectionString = 
            @"Provider=Microsoft.ACE.OLEDB.12.0; Data Source={0};
              Persist Security Info=False; Jet OLEDB: Database Password={1};";

至：

string connectionString = 
            @"Provider=Microsoft.ACE.OLEDB.12.0; Data Source={0};
              Persist Security Info=False; Jet OLEDB:Database Password={1};";

它起作用了，我有一个不需要的空间...

Answer 2

在我的例子中，我修复了：

我改变了：

string conexion = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\temp\Fa.mdb;Database Password=xxx;";

至：

string conexion = @"Provider=Microsoft.ACE.OLEDB.12.0; Data Source=C:\temp\Fa.mdb;Persist Security Info=False; Jet OLEDB:Database Password='xxx';";

Answer 3

对于插入部分，您有一个名为Password的字段，这是MS Access中的一个关键字。insert语句应该包含密码，而不是密码。