Can we store mixed datatypes such as char, string ,int etc. in single array?

Yes

Yes

yes

Yes you can use ArrayList Collection which is Type Independent

We can do that but , ArrayList is the correct way to do that.

In single array we can't store mixed datatype however by using ArrayList you can achieve this

using ArrayList we can do that

Yes we can store different/mixed types in a single array by using following two methods: Method 1: using Object array because all types in .net inherit from object type Ex: object[] array=new object[2]; array[0]=102; array[1]="csharp"; Method 2: Alternatively we can use ArrayList class present in System.Collections namespace .We can use Add() method of ArrayList class to add different data types to the ArrayList collection. Ex: ArrayList arrlist=new ArrayList(); arrlist.Add(98); arrlist.Add("Dotnet");

You can do the same by many ways one of them is using a union: union { int ival; float fval; void *pval; } array[10]; You will have to keep track of the type of each element, though. You can try it via Class also.

Yes, We can use mixed datatypes in a single array. struct { enum { is_int, is_float, is_char } type; union { int ival; float fval; char cval; } val; } my_array[10];

Yes, We can do. class Example { public string Name {get; set;} public int Age {get; set;} } //Method { object[] MyArray = new object[3]; MyArray[0] = "Faisal"; MyArray[1] = 100; Example exp = new Example(); exp.Name = "Faisal Pathan"; exp.Age = 22; MyArray[2] = exp; }