我正在编写C#可执行文件,需要检查Microsoft Access数据库的给定密码是否正确。它需要能够对.mdb文件和.accdb文件都执行此操作。对于.mdb,我使用的是JET OLED,它工作正常,但是JET OLEDB不支持较新版本的Microsoft Access,因此我使用ACE OLEDB,但是每次都会收到错误消息。这是相关的方法:
public int CheckPassword(string password, string filePath)
{
// Ensure the correct provider for with .mdb(default) or .accdb
string providerName = "Microsoft.Jet.OLEDB.4.0";
if (Path.GetExtension(filePath) == ".accdb")
{
Console.WriteLine("Changed provider to ACE");
providerName = "Microsoft.ACE.OLEDB.12.0";
}
// Establish access to the file
var accessBuilder = new OleDbConnectionStringBuilder
{
Provider = providerName,
DataSource = filePath
};
accessBuilder["Jet OLEDB:Database Password"] = password;
// Attempt to enter a password and catch if it is incorrect
using (var conn = new OleDbConnection(accessBuilder.ConnectionString))
{
if (ConnectionState.Open != conn.State)
{
try
{
// If it fails here, likely due to an actual bad password.
conn.Open();
Console.WriteLine("0 - Success: Password Correct");
}
catch (OleDbException)
{
// Assumed bad password
Console.WriteLine("2 - Error: Password Incorrect");
return -1;
}
}
}
return 0;
}
当我给它一个.accdb时,输出为:
Changed provider to ACE
Unhandled Exception: System.Data.OleDb.OleDbException: Cannot open database
''. It may not be a database that your application recognizes, or the file
may be corrupt`.
当我给它一个.mdb时,输出为:
0 - Success: Password Correct
我尝试使用全新的Access文件,但仍然会出现相同的错误