How to dynamically add values in a 2D array?

Question

I am working with 2D arrays. what I want, is to dynamically add elements in specific columns of my 2D array named symboltable2. I have been doing it as;

result is another 1D array in which there are certain words:

string[,] symboltable2 = new string[,];

if (result.Contains("int")) {
    for (int todynamic = 0; todynamic < result.GetLength(0); todynamic++) {
        symboltable2[todynamic, 6] = "int";
    }
    for (int sym2 = 0; i < symboltable1.GetLength(0); sym2++) {
        f4.listBox6.Items.Add(symboltable1[sym2, 5]); // To show if the values are added or not
    }
}

but the code above isn't giving me any results... kindly help :(

string[,] symboltable2= new string[,] won't even compile: Array creation must have array size or array initializer — Paul Sasik
– Paul Sasik, Commented May 27, 2012 at 16:41

sihirbazzz · Accepted Answer · 2012-05-27 16:56:56Z

2

while implementing arrays you need to give the array's dimension i.e.

string[,] sa = new string[5,15];

or

string[,] sa = new string[listString1.Count, listString2.Count]

about adding / changing elements to 2D array.. as a simple string array example :

sa[0, 1] = "a";
sa[0, 2] = "b";
sa[1, 0] = "Istanbul / Turkey";

answered May 27, 2012 at 16:56

sihirbazzz

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Comments

Paul Sasik · Accepted Answer · 2012-05-27 16:57:00Z

2

You need to set the size of the array. And to have it public I would use a property and initialize your array in the class constructor like this:

public class MyClass
{
    public string[,] symboltable2 { get; set; } 

    public MyClass()
    {
        symboltable2 = new string[10,10];
    }

            // ...

answered May 27, 2012 at 16:57

Paul Sasik

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2 Comments

Olivier Jacot-Descombes Over a year ago

+1. If possible define it as public string[,] SymbolTable2 { get; private set; } using a private setter.

Paul Sasik Over a year ago

This will just the same in WinForms. Classes are classes and fields are fields.

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