如何在C#
使用Npgsql
用户计算机上所有可用PostgreSQL
数据库的列表?
在 postgreSQL 中有两种方法可以做到:
\\l
SELECT datname FROM pg_database;
Using Npgsql
You can use such code snippet:
IEnumerable<string> GetDatabaseNames()
{
var connStrBuilder = new NpgsqlConnectionStringBuilder();
connStrBuilder.Host = "localhost";
connStrBuilder.Username = "theduck";
connStrBuilder.Password = "password123";
connStrBuilder.Database = "postgres"; // this database is always present
using (var conn = new NpgsqlConnection(connStrBuilder.ConnectionString))
{
conn.Open();
using (var command = new NpgsqlCommand("SELECT datname FROM pg_database WHERE datistemplate = false ORDER BY datname;", conn))
using (var reader = command.ExecuteReader())
{
while (reader.Read())
{
yield return reader.GetString(0);
}
}
}
}
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