Type conversion

The official System.Data.SQLite has some interesting type conversion rules when calling SQLiteDataReader.GetX (for various values of X).

GetInt16

SQLiteConnectionStringBuilder csb = new SQLiteConnectionStringBuilder { DataSource = @"C:\Temp\test.db" };
using (var connection = new SQLiteConnection(csb.ConnectionString))
{
	connection.Open();
	using (var cmd = new SQLiteCommand(@"create table Test(Value integer); insert into Test(Value) values
		(32768),
		(2147483647),
		(9223372036854775807),
		(-9223372036854775808);", connection))
	{
		cmd.ExecuteNonQuery();
	}
	using (var cmd = new SQLiteCommand(@"select Value from Test;", connection))
	using (var reader = cmd.ExecuteReader())
	{
		reader.Read();
		try { reader.GetInt16(0); } catch (OverflowException) { } // throws OverflowException
		reader.Read();
		try { reader.GetInt16(0); } catch (OverflowException) { } // throws OverflowException
		reader.Read();
		reader.GetInt16(0); // -1
		reader.Read();
		reader.GetInt16(0); // 0
	}		
}

GetChar

SQLiteConnectionStringBuilder csb = new SQLiteConnectionStringBuilder { DataSource = @"C:\Temp\test.db" };
using (var connection = new SQLiteConnection(csb.ConnectionString))
{
	connection.Open();
	using (var cmd = new SQLiteCommand(@"create table Test(Value text); insert into Test(Value) values
		('123'),
		('65533'),
		('65535'),
		('65536');", connection))
	{
		cmd.ExecuteNonQuery();
	}
	using (var cmd = new SQLiteCommand(@"select Value from Test;", connection))
	using (var reader = cmd.ExecuteReader())
	{
		reader.Read();
		reader.GetChar(0); // '{' == (char) 123
		reader.Read();
		reader.GetChar(0); // '\uFFFD' = (char) 65533
		reader.Read();
		try { reader.GetChar(0); } catch (ArgumentException) { } // throws ArgumentException
		reader.Read();
		try { reader.GetChar(0); } catch (OverflowException) { } // throws OverflowException
	}		
}