Changing array length at runtime in C#.net

Dealing with arrays is a part of life for coders as they are almost every where in the code, so i thought that it would be the best topic to start my blog that deals with programming related topics.

Array Declaration in C#.net

DataType[] Array_Name=new string[Array_Length];

int[] Myarray=new int[10];

as we now know how to intialise an array, now lets store some values into it

Storing values in array

int Myarray = new int[10];
for (int i = 0; i < Myarray.Length; i++)
{
Myarray[i] = i;
}

The above code stores the values 1  to 10 in the array “Myarray”.

Ok enough of the basics, now lets go straight to Arrays with dynamic length

Creating arrays with dynamic length

1. To start with declare an array of your choice with zero length (or any length), i am using an int array
2. now when you are about to enter the values into increase the length of the array using Array.Resize method
3. The syntax of the Array.Resize method is
4. Array.Resize(ref Array_2_Resize, Length)
5. Now pass the value to the Array as Myarray[Myarray.Length-1] = value;

Example: The following example demonstartes how to Increase the length of an array at runtime

int Myarray = new int[0];
for (int i = 0; i < 10; i++)
{
Array.Resize(ref  Myarray, Myarray.Length+1);
Myarray[Myarray.Length - 1] =  i;
}

simillarly you can use the same principle to decrease the size of an array at run time.

Please comment on this post, if you have any doubts.I will be very happy to help you

Update

CodeProject

Advertisement

---