void IDB.Update(object obj, string key_fields, string update_fields)
{
MySql.Data.MySqlClient.MySqlCommand cmd = new MySql.Data.MySqlClient.MySqlCommand();
cmd.Connection = conn;
cmd.Transaction = tran;
cmd.CommandTimeout = 8000;
//
string sql = "";
string fields = "";
List <string> lst = new List <string>();
if (update_fields.Contains(",") == false)
{
lst.Add(update_fields.ToLower());
}
else
{
foreach (string field in update_fields.Split(','))
{
lst.Add(field.ToLower());
}
}
foreach (System.Reflection.PropertyInfo p in obj.GetType().GetProperties())
{
if (lst.Contains(p.Name.ToLower()) == false)
{
continue;
}
if (fields == "")
{
fields += p.Name + "=" + "@" + p.Name;
}
else
{
fields += "," + p.Name + "=" + "@" + p.Name;
}
}
string filter = "";
if (key_fields.Contains(",") == false)
{
filter = key_fields + "=" + "@" + key_fields;
}
else
{
foreach (string field in key_fields.Split(','))
{
if (filter == "")
{
filter += field + "=" + "@" + field;
}
else
{
filter += " and " + field + "=" + "@" + field;
}
}
}
sql = "update " + ReflectionHelper.GetDataTableNameByModel(obj) + " set " + fields + " where " + filter;
cmd.CommandText = sql;
cmd.Parameters.AddRange(ReflectionHelper.ModelToSqlParameters(obj));
//
cmd.ExecuteScalar();
}
