DataRow转实体

Posted 2021-11-30 mact

 

调用                       DataRow row = new DataRow();

 ConvertToEntity<实体类>(row)

 

   private T ConvertToEntity<T>(DataRow row) where T : new()
        {
            T t = new T();
            PropertyInfo[] propertys = t.GetType().GetProperties();// 获得此模型的公共属性
            foreach (PropertyInfo pi in propertys)
            {
                if (row.Table.Columns.Contains(pi.Name))
                {
                    if (!pi.CanWrite) continue;
                    var value = row[pi.Name];
                    try
                    {
                        if (value != DBNull.Value && value != null && value.ToString() != "")
                        {

                            if (pi.PropertyType.FullName.ToUpper().Contains("DECIMAL"))
                            {
                                pi.SetValue(t, decimal.Parse(value.ToString()), null);
                            }
                            else if (pi.PropertyType.FullName.ToUpper().Contains("DOUBLE"))
                            {
                                pi.SetValue(t, double.Parse(value.ToString()), null);
                            }
                            else if (pi.PropertyType.FullName.ToUpper().Contains("INT32"))
                            {
                                //if (value.ToString().Contains("."))
                                //{

                                //}
                                //pi.SetValue(t, int.Parse(value.ToString()), null);
                                pi.SetValue(t, Convert.ToInt32(value.ToString()), null);
                            }
                            else if (pi.PropertyType.FullName.ToUpper().Contains("INT16"))
                            {
                                if (value.ToString().Contains("."))
                                {

                                }
                                pi.SetValue(t, short.Parse(value.ToString()), null);
                            }
                            else if (pi.PropertyType.FullName.ToUpper().Contains("STRING"))
                            {
                                pi.SetValue(t, value.ToString(), null);
                            }
                            else if (pi.PropertyType.FullName.ToUpper().Contains("DATETIME"))
                            {
                                pi.SetValue(t, DateTime.Parse(value.ToString()), null);
                            }
                            else
                                pi.SetValue(t, value, null);
                        }

                    }
                    catch (Exception ex)
                    {
                        //throw ex;
                    }

                }
            }
            return t;
        }