/// <summary>
/// 根据主键删除数据库记录
/// </summary>
/// <param name="field"></param>
public void Delete(FieldValueDictionary field)
{
string fieldName = field.GetFieldName();
db.ExecuteNonQuery("delete from " + tableName + " where " + fieldName +
"=@" + fieldName, db.DataBaseAdapter.CreateParameter("@" + fieldName, field.Value));
}
public Entity Get(FieldValueDictionary field)
{
string fieldName = field.GetFieldName();
string sql = "SELECT TOP 1 * FROM " + tableName +
" WHERE " + fieldName + "=@" + fieldName;
Entity obj = null;
ColumnAttribute attr;
Type type = typeof(Entity);
Assembly ass = type.Assembly;
db.ExecuteReader(new SqlQuery(sql, new object[, ]
{
{ "@" + fieldName, field.Value }
}), rd =>
{
object[] attrs; //columnAttributes
while (rd.Read())
{
obj = ass.CreateInstance(type.ToString(), true) as Entity;
foreach (PropertyInfo p in properties)
{
attrs = p.GetCustomAttributes(typeof(ColumnAttribute), true);
if (attrs.Length == 0)
{
continue;
}
attr = attrs[0] as ColumnAttribute;
p.SetValue(obj, Convert.ChangeType(rd[attr.Name ?? p.Name],
p.PropertyType), null);
}
break;
}
});
return(obj);
}