Answer / mithun

By using a generic class, we can create classes that is type safe at compile time.

ArrayList is a highly convenient collection class that can be used without modification to store any reference or value type. Any reference or value type that is added to an ArrayList is implicitly upcast to Object. If the items are value types, they must be boxed when they are added to the list, and unboxed when they are retrieved. Both the casting and the boxing and unboxing operations decrease performance

ArrayList list = new ArrayList();
list.Add(3);
list.Add("It is raining in Redmond.");
int t = 0;
foreach (int x in list)
{
t += x;
}

This will cause a programming error, and this error will not be detected until runtime.


In the generic List<T> collection, the same operation of adding items to the collection
List<int> list1 = new List<int>();
list1.Add(3);
list1.Add("It is raining in Redmond."); // this gives Compile-time error.

Now you can create a list that is not only safer than ArrayList, but also significantly faster, especially when the list items are value types.

Answer / dhanunjaya

generic is a general data type in c# similar to template in
c++.by using generic we can assign any type of value to the
generic variable.we have generic methods,generic classes
also.

Answer / tejkrishna

Generics are the type like list<> collection but it can
contain any type within it like list<t>.

I M working in 1.1 .net framework. In a page I have 5 text box & 2 data grid. In PageLoad() All text box will populate with blank value & 1st dataGrid with some value. When I click on EDIT button Of the 1st dataGrid,The Relevent data Of the particular row will populate in first 3 textboxs & corresponding relevent data Will populate in the 2nd DataGrid. Now when I click 2nd datagrid's EDIT button of a perticular Row,relevent data will populate on last 2 textboxs & 1st 3 textbox's value will be same as per as it was........ ........My Problem Is ........... When I click on edit button Of 2nd DataGrid, 1st 3 text boxes values goes Off & 2nd DataGrid Is goes off Due to Postback.but The relevent value is populated In last 2 textboxes.So How I stoped this postback??So that all the data in 1st 3 textboxes will be same.So that I can edit the values of 2nd Grid with 1st 3 textBoxes value.. plz dirctly mail me 1 copy of post to... maloy.adhikari@in.com

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