select item second time from combo record not displayin grid

Question

combo box item will be fill manually , items are SUNDAY TO SATURDAY

problem is, when i am selecting item second time data will be not displayed from database in datagridview

means .. datagridview allready filled , after that record when i select new item again that time record not display in datagridview..

i want both old and new record in datagridview..

Answer 1

There is no benefit or difference of them, other than that they allow us to update the values of the fields before hand. For example, we may do this:

var person = new Person();
person.Name = "Afzaal Ahmad Zeeshan"; 
person.Age = 20;

But, using the parameters with constructors allows you to pass the values at the object construction,

var person = new Person("Afzaal Ahmad Zeeshan", 20); 

Because rest of the stuff would be handled by the constructor itself:

public Person(string name, int age) {
     Name = name;
     Age = age; 
} 

Otherwise, there is no difference in them. Plus, there is a bit of stuff for "overloading" going on. You must understand that Overloading is a concept of Object-oriented programming. I have an article about overriding and overloading, that may help you a bit more about this. 

 

http://www.c-sharpcorner.com/UploadFile/201fc1/still-do-not-get-the-difference-of-overloading-and-overridin/