public static IDbCommand CreateCommand(this IDbProvider dbProvider, string sql, CommandType cmdType = CommandType.Text, Func <IDbCommand, IDbDataParameter[]> getParas = null)
{
var conn = dbProvider.CreateConnection();
if (conn.State != ConnectionState.Open)
{
conn.Open();
}
var trans = conn.BeginTransaction();
var cmd = dbProvider.CreateCommand(conn);
IDbDataParameter[] paras = null;
if (getParas != null)
{
paras = getParas(cmd);
}
dbProvider.PrepareCommand(ref cmdType, ref sql, ref paras);
cmd.CommandType = cmdType;
cmd.CommandText = sql;
if (paras != null && paras.Length > 0)
{
foreach (var p in paras)
{
dbProvider.AttachParameter(cmd, p);
}
}
cmd.Transaction = trans;
return(cmd);
}