public static DataTable GetToDataTable(this List <BulkCopyModel> collection, Type type, string target)
{
var props = type.GetProperties();
string tableName = CoreUtils.GetTableName(type);
string sqlDataColumns = "SElect TOP 1 * FROM " + tableName + " WHERE 1=0";
DataTable dtColumns = new DataTable();
dtColumns = db.FindQuery(sqlDataColumns, null, target).Find();
if (dtColumns == null)
{
return(null);
}
dtColumns.TableName = tableName;
if (collection.Count > 0)
{
foreach (var item in collection)
{
DataRow dr = dtColumns.NewRow();
foreach (DataColumn column in dtColumns.Columns)
{
var propx = props.Where(p => p.Name == column.ColumnName).ToList();
if (propx != null && propx.Count > 0)
{
var px = propx.First();
object obj = px.GetValue(item.CopyModel, null);
if (obj != null)
{
dr[column.ColumnName] = obj;
}
else
{
dr[column.ColumnName] = DBNull.Value;
}
}
}
dtColumns.Rows.Add(dr);
}
}
return(dtColumns);
}
/// <summary>
/// 获取两个对象间的值发生变化的描述
/// </summary>
/// <typeparam name="T">T</typeparam>
/// <param name="obj1">变化前的对象</param>
/// <param name="obj2">变化后的对象</param>
/// <param name="isDes">是否过滤掉没有[Description]标记的</param>
/// <returns>字符串</returns>
internal static List <ChangedInfo> GetChangeInfos <T>(T obj1, T obj2, HashSet <string> propertyChangedLis) where T : new()
{
string res = string.Empty;
List <ChangedInfo> lis = new List <ChangedInfo>();
if (obj1 == null || obj2 == null)
{
return(new List <ChangedInfo>());
}
if (propertyChangedLis == null || propertyChangedLis.Count() <= 0)
{
return(new List <ChangedInfo>());
}
var properties =
from property in (typeof(T).GetProperties(BindingFlags.Instance | BindingFlags.Public))
select property;
//string objVal1 = string.Empty;
//string objVal2 = string.Empty;
foreach (var propertyName in propertyChangedLis)
{
var property = properties.Where(p => p.Name == propertyName).FirstOrDefault();
var objVal1 = property.GetValue(obj1, null) == null ? string.Empty : property.GetValue(obj1, null);
var objVal2 = property.GetValue(obj2, null) == null ? string.Empty : property.GetValue(obj2, null);
var keyFiledName = CoreUtils.GetKeyFiledName(typeof(T));
var tableName = CoreUtils.GetTableName(typeof(T));
var keyVlaue = CoreUtils.GetObjectPropertyValue(obj1, keyFiledName).ToSafeString("");
string des = string.Empty;
//DescriptionAttribute descriptionAttribute = ((DescriptionAttribute)Attribute.GetCustomAttribute(property, typeof(DescriptionAttribute)));
//if (descriptionAttribute != null)
//{
// des = ((DescriptionAttribute)Attribute.GetCustomAttribute(property, typeof(DescriptionAttribute))).Description;// 属性值
//}
//if (isDes && descriptionAttribute == null)
//{
// continue;
//}
if (objVal1 == null && objVal2 == null)
{
continue;
}
if ((objVal1 == null && objVal2 != null) || (objVal1 != null && objVal2 == null))
{
var dispalyname = "";
object[] attrs = property.GetCustomAttributes(true);
var f = (from p in attrs where p.GetType().Name == "DisplayAttribute" select p).FirstOrDefault();
if (f != null)
{
DisplayAttribute displayAttr = f as System.ComponentModel.DataAnnotations.DisplayAttribute;
dispalyname = displayAttr.Name;
}
lis.Add(new ChangedInfo()
{
FFiledName = property.Name, FNewValue = objVal2.ToSafeString(), FOldValue = objVal1.ToSafeString(), FOrgType = property.GetType().ToString(), FFiledDes = dispalyname, FTableName = tableName, FKeyFiledName = keyFiledName, FKeyValue = keyVlaue
});
continue;
}
if (!(objVal1.Equals(objVal2)))
{
var dispalyname = "";
object[] attrs = property.GetCustomAttributes(true);
var f = (from p in attrs where p.GetType().Name == "DisplayAttribute" select p).FirstOrDefault();
if (f != null)
{
DisplayAttribute displayAttr = f as System.ComponentModel.DataAnnotations.DisplayAttribute;
dispalyname = displayAttr.Name;
}
lis.Add(new ChangedInfo()
{
FFiledName = property.Name, FNewValue = objVal2.ToSafeString(), FOldValue = objVal1.ToSafeString(), FOrgType = property.GetType().ToString(), FFiledDes = dispalyname, FTableName = tableName, FKeyFiledName = keyFiledName, FKeyValue = keyVlaue
});
}
}
return(lis);
}
