How do I add values to an array

Question

I am currently working on a programming language, and my friend asked me to convert it to a console application and, so far it hasn't been going well

if (input.Contains(""))
{
    string name = input.Substring(0, 3);
    string value = input.Substring(4);
    Console.WriteLine("Name:" + name + " " +  "Value:" + value);
    vars[Convert.ToInt32(name)] = value;
}

The line that says vars[Convert.ToInt32(name)] = value; has been giving me errors when I run it the first 3 lines above it work this is an example of what I would type in the console str Hello and it would print Name:str Value:Hello but then it stops the program and shows me this error

Input string was not in a correct format.

I'm not to familiar with this error but if you have ever programmed in Lua this is what im trying to accomplish

elseif line:match("^int") then
    local n, v = line:match("^int (.+) = (%d+)")
    vars[n] = v

I always had a problem with arrays in C#, so if you could please tell me whats wrong it would help me a lot, Thanks in advance.

Convert.ToInt32(name) if name is not numeric (which most likely it isn't, given the variable name name) within the range of int then the format is incorrect. — Ian
– Ian, Commented Jan 25, 2016 at 4:34
Note that input.Contains("") will always return true (or throw an exception if input is null). — juharr
– juharr, Commented Jan 25, 2016 at 4:37
If that's regular expressions in your lua code you might want to use the Regex class — juharr
– juharr, Commented Jan 25, 2016 at 4:46

Steve · Accepted Answer · 2016-01-25 04:36:01Z

5

It sounds like you actually want a Dictionary to hold a key-value pair of name and value. You can only use an int for an index on an array, so a dictionary allows you to use string values.

var inputDictionary = new Dictionary<string,string>();
if (input.Contains(""))
{
    string name = input.Substring(0, 3);
    string value = input.Substring(4);
    Console.WriteLine("Name:" + name + " " +  "Value:" + value);
    inputDictionary.Add(name, value);
}

answered Jan 25, 2016 at 4:36

Steve

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Comments

Suhas Kulkarni · Accepted Answer · 2016-01-25 04:52:39Z

1

Instead you can have a HashTable like below

        Hashtable hashTable = new Hashtable();
        if (input.Contains(string.Empty))
        {
            hashTable.Add(input.Substring(0, 3), input.Substring(4));
        }

edited Jan 25, 2016 at 4:52

answered Jan 25, 2016 at 4:47

Suhas Kulkarni

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