public EsentColumn AddColumn <T>(string name, Encoding encoding = null, int?max = null,
object defaultValue = null, EsentColumn.Option option = EsentColumn.Option.None)
{
CheckState();
_columnsValid = false;
return(EsentColumn.Create <T>(this, name, encoding, max, defaultValue, option));
}
internal static EsentColumn Create <T>(EsentTable table, string name, Encoding encoding, int?max, object defaultValue, Option option)
{
var columnType = typeof(T);
var column = new EsentColumn
{
Table = table,
Name = name,
ColumnType = columnType,
Encoding = encoding,
Max = max,
DefaultValue = defaultValue,
JetDef = { grbit = (ColumndefGrbit)option }
};
var defaultValueBytes = ValueProcessor.GetBytes(defaultValue, encoding);
var defaultValueSize = defaultValueBytes?.Length ?? 0;
Api.JetAddColumn(table.Database.Session.JetId, table.JetId, name, column.JetDef, defaultValueBytes, defaultValueSize, out column.JetId);
return(column);
}
public void DropColumn(string name)
{
CheckState();
_columnsValid = false;
EsentColumn.Drop(this, name);
}