如何在C#中使用MS Access数据库显示标签上的数据

using System.Data.OleDb;

string connectionString = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\path\to\your\database.accdb";
OleDbConnection connection = new OleDbConnection(connectionString);

connection.Open();

string sql = "SELECT * FROM TableName";
OleDbCommand command = new OleDbCommand(sql, connection);

OleDbDataReader reader = command.ExecuteReader();

if (reader.Read())
{
    string data = reader["ColumnName"].ToString();
    label1.Text = data;
}

reader.Close();
connection.Close();