. NET two object comparisons, throwing results of a different field

It should now be used frequently to record the operation log, Modify and add a change that must involve the property values of two Entities.

Use reflection to record Changes.

Remember that the attribute fields in the class need to be labeled Description :

For example:

        < Summary > ///         last        modified </summary>        [Description ("last modified")] Public        DateTime piupdatetime {get; set;}

The relevant code is attached directly:

  public classOprateloghelper {/// <summary>        ///gets a description of the change in value between two objects/// </summary>        /// <typeparam name= "T" >T</typeparam>        /// <param name= "obj1" >the object before the change</param>        /// <param name= "obj2" >the object after the change</param>        /// <param name= "isdes" >whether or not the [Description] tag is filtered out</param>        /// <returns>string</returns>         public Static stringgetobjcomparestring<t> (t obj1, T obj2,BOOLIsdes)whereT:New()        {            stringres =string.            Empty; if(obj1 = =NULL|| Obj2 = =NULL)            {                returnres; }            varProperties = fromPropertyinch typeof(T). GetProperties (bindingflags.instance |Bindingflags.public)Selectproperty ; stringObjVal1 =string.            Empty; stringObjVal2 =string.            Empty; foreach(varPropertyinchproperties) {                varIngorecompare = Attribute.GetCustomAttribute (property,typeof(ingorecompareattribute)); if(ingorecompare! =NULL)                {                    Continue; } objVal1= Property. GetValue (obj1,NULL) ==NULL?string. Empty:property. GetValue (obj1,NULL).                ToString (); ObjVal2= Property. GetValue (obj2,NULL) ==NULL?string. Empty:property. GetValue (obj2,NULL).                ToString (); stringDes =string.                Empty; DescriptionAttribute DescriptionAttribute= ((descriptionattribute) Attribute.GetCustomAttribute (property,typeof(descriptionattribute))); if(descriptionattribute! =NULL) {des= ((descriptionattribute) Attribute.GetCustomAttribute (property,typeof(descriptionattribute)). Description;//Property Value                }                if(isdes && DescriptionAttribute = =NULL)                {                    Continue; }                if(!objval1.equals (objVal2)) {res+= (string. IsNullOrEmpty (des)? Property. Name:des) +":"+ ObjVal1 +" -"+ ObjVal2 +";"; }            }            returnres; }    }    /// <summary>    ///when some features are added, the attribute is ignored in the entity diff comparison/// </summary>[attributeusage (attributetargets.property, AllowMultiple =false, inherited =false)]     public classIngorecompareattribute:attribute { publicIngorecompareattribute () {Flag=true; }         public BOOLFlag {Get;Set; } }

When used, call the Getobjcomparestring method directly.

. NET two object comparisons, throwing results of a different field