public static Tuple <string, List <T> > DataTableToList <T>(DataTable dt)
{
LibResultDto dto = new LibResultDto();
try
{
Type t = typeof(T);
PropertyInfo[] p = t.GetProperties();
List <T> list = new List <T>();
foreach (DataRow dr in dt.Rows)
{
T obj = (T)Activator.CreateInstance(t);
string[] sdrFileName = new string[dt.Columns.Count];
for (int i = 0; i < dt.Columns.Count; i++)
{
sdrFileName[i] = dt.Columns[i].ColumnName.ToLower();
}
foreach (PropertyInfo item in p)
{
if (sdrFileName.ToList().IndexOf(item.Name.ToLower()) > -1)
{
if (dr[item.Name] != System.DBNull.Value)
{
item.SetValue(obj, dr[item.Name]);
}
else
{
item.SetValue(obj, null);
}
}
else
{
item.SetValue(obj, null);
}
}
list.Add(obj);
}
dto.Result = list;
}
catch (Exception ex)
{
dto.ResultMsg = ex.Message;
}
return(Tuple.Create(dto.ResultMsg, dto.Result));
}
public static Tuple <string, string> ModelToInsertSql <T>(T t, string tableName, string fieldKey)
{
LibResultDto dto = new LibResultDto();
string _strField = "";
string _strValue = "";
string _strSql;
try
{
PropertyInfo[] PropertyInfos = t.GetType().GetProperties();
foreach (PropertyInfo pi in PropertyInfos)
{
object _objValue = pi.GetValue(t, null);
Type _type = pi.PropertyType;
if (_objValue != null)
{
if (pi.Name.ToLower() != fieldKey.ToLower())
{
switch (_type.Name.ToLower())
{
case "datetime":
string _date = Convert.ToDateTime(_objValue).ToString("yyyy-MM-dd HH:mm:ss");
if (!_date.Equals("0001-01-01 00:00:00"))
{
_strField += pi.Name + ",";
_strValue += string.Format("'{0}',", _date);
}
break;
case "guid":
if (!Convert.ToString(_objValue).Equals("00000000-0000-0000-0000-000000000000"))
{
_strField += pi.Name + ",";
_strValue += string.Format("'{0}',", _objValue);
}
break;
case "string":
_strField += pi.Name + ",";
_strValue += string.Format("N'{0}',", _objValue == null ? "" : _objValue.ToString().Replace("'", "''"));
break;
default:
_strField += pi.Name + ",";
_strValue += string.Format("'{0}',", _objValue == null ? "" : _objValue.ToString().Replace("'", "''"));
break;
}
}
}
}
_strField = _strField.TrimEnd(',');
_strValue = _strValue.TrimEnd(',');
_strSql = $"insert into {tableName}({_strField}) values({_strValue})";
dto.Result = _strSql;
}
catch (Exception ex)
{
dto.ResultMsg = ex.Message;
}
return(Tuple.Create(dto.ResultMsg, dto.Result));
}
public static Tuple <string, string> ModelToUpdateSql <T>(T t, string tableName = "", string sKey = "")
{
LibResultDto dto = new LibResultDto();
string _strValue = "";
string _strSet = "";
string _strWhere = "";
string _strSql;
sKey = sKey?.ToLower() ?? "id";
tableName = tableName ?? t.GetType().Name;
try
{
PropertyInfo[] PropertyInfos = t.GetType().GetProperties();
foreach (PropertyInfo pi in PropertyInfos)
{
string _strField = pi.Name;
object _objValue = pi.GetValue(t, null);
Type _type = pi.PropertyType;
if (_objValue != null && !pi.Name.ToLower().Equals(sKey))
{
switch (_type.Name.ToLower())
{
case "datetime":
_strValue = Convert.ToDateTime(_objValue).ToString("yyyy-MM-dd HH:mm:ss");
if (!_strValue.Equals("0001-01-01 00:00:00"))
{
_strSet += string.Format("{0} = '{1}',", _strField, _strValue);
}
break;
case "guid":
if (!Convert.ToString(_objValue).Equals("00000000-0000-0000-0000-000000000000"))
{
_strValue += string.Format("'{0}',", _objValue);
}
break;
default:
_strValue = string.Format("{0}", _objValue);
if (_strField.ToLower() == sKey.ToLower())
{
_strWhere = string.Format(" and {0} = '{1}'", _strField, _strValue);
}
else
{
_strSet += string.Format("{0} = N'{1}',", _strField, _strValue);
}
break;
}
}
else if (_objValue != null && pi.Name.ToLower().Equals(sKey))
{
_strWhere = string.Format(" and {0} = '{1}'", _strField, _objValue);
}
}
_strSet = _strSet.TrimEnd(',');
_strSql = $"update {tableName} set {_strSet} where 1 = 1 {_strWhere}";
dto.Result = _strSql;
}
catch (Exception ex)
{
dto.ResultMsg = ex.Message;
}
return(Tuple.Create(dto.ResultMsg, dto.Result));
}