Question

I have three string arrays:

private readonly string[] PMCTableColumnNames = new string[] { "PMCIP", "Description", "Cam1ReferencePoints", "Cam2ReferencePoints", "DataserverIP" };
private readonly string[] PMDTableColumnNames = new string[] { "PMDIP", "Description" };
private readonly string[] PMDZonesTableColumnNames = new string[] { "PMDIP", "Description", "Zone" };

I want to construct an array that points to these arrays as:

private var[] ArrayReferences = new var[] { PMCTableColumnNames, PMDTableColumnNames, PMDZonesTableColumnNames };

When i put index to this (ArrayReferences) array, i want to get all elements of the specific array like this:

string[] _PMDTableColumnNames = ArrayReferences[1];

How can i do that?

Answer 1

You can create an array of arrays:

private string[][] ArrayReferences;

Note you’ll have to initialise ArrayReferences in the constructor since you can’t reference the other arrays in the field initialiser. i.e.

public class ClassName
{
    private readonly string[] PMCTableColumnNames = new string[] { "PMCIP", "Description", "Cam1ReferencePoints", "Cam2ReferencePoints", "DataserverIP" };
    private readonly string[] PMDTableColumnNames = new string[] { "PMDIP", "Description" };
    private readonly string[] PMDZonesTableColumnNames = new string[] { "PMDIP", "Description", "Zone" };

    private string[][] ArrayReferences;

    public ClassName()
    {
        ArrayReferences = new string[][] { PMCTableColumnNames, PMDTableColumnNames, PMDZonesTableColumnNames };
    }

    void SomeMethod()
    {
        string[] _PMDTableColumnNames = ArrayReferences[1];
    }
}