C#NET2008 Problem with Two Dimensional Array

Your array is too small! The nubmers are 9 and 1 giving you 9 slots in the first array dimension and 1 slot in the second array dimension.
Indexes are zero based so:

private string[ , ] strColmArray = new string[9, 1];
private void FLoadColmArray()
   {
       strColmArray[0, 0] = "Order ID";
       strColmArray[0, 1] =  "Ord487";  //This is the second slot in the second array but you declared only one slot

       strColmArray[1, 0]  = "Product ID";
       strColmArray[1,1]   =  750.45;  //should be "750.45" as there is no implicit cast from that to a string it will have to be done explicitely or expressed as a string in the first place
    }

I think you need to read some on arrays and zero based indexes.

Best Regards,

Manfred

If your IT Senior Team Leader has requested an Array, then give him an Array.

It cannot, however, be a string Array since one of the pieces of data is an integer, unless you convert to and from a string each time you want to read or store that data.

You could use an Array of type Object

private object[ , ] objColmArray = new object[9, 1];

which will allow you to store any data type but has the disadvantage that to make use of the data you will have to convert/cast the data when reading it.

My preference, if it has to be an Array, would be to use a one dimensional array of a custom class

internal class MyClass
{
  public string Name {get; set;}
  public int Value {get; set;}
}

private MyClass[] mcColmArray = new MyClass[100];

My real preference would be to have a chat with your IT Senior Team Leader to find out why they want you to use an Array when it is not the best option.

Hi Henry Minute,
As requested by you to speak to my IT Senior Team Leader, I have printed your request and show it to JaneDurban my IT Senior Team Leader.

She mentioned that the request of using 2 Dimensional Array by me is to develop the working logic so share it with other developers who are fresh Graduates from University 8 months ago who do not have the practical experiences.

She said the idea of 2 dimensional Array is to create a storage events of Column Name and column width for EXCEL 2003 Spreadsheet and WORD 2003 Table that will reduced the codings.

[Moved to a comment]:

This was supposed to a comment OP should have written to an answer.

You have some correct answers here.

Also, don't forget jagged array (in some document Microsoft recommended to prefer those over regular fixed-rank arrays, because they can contain uneven-length array in one or more indexes, buy I think, this depends on application):

string[][] array = new string[3][];
int length = array.Length; //==3; first index is outer
for (int index = 0; index < length; index++)
    array[index] = new string[index * 2 + 1]; //for example
//...
array[2][0] = "some value";

I've put this sample just to let you see which index is initialized first and which one allows for variable-length initialization.