declaring a string[] question

[devicemangler]

I have been trying to declare a string[] with a dynamic amount of elements (in C#). but everything i try gives me an error of some sort.

i have tried

string[] myString = new string[];

wont compile and gives an error of "Array creation must have array size or array initializer".

string[] myString = null;

will compile but will give an "Object reference not set to an instance of an object" error.

string[] myString;

gives a compile error of "Use of unassigned local variable "myString""
none of these seem to work. help please.

[Shashi Sadasivan]

You have to declare the size of the array.
[CODE=csharp]string[] myString = new string[5];[/CODE]

you can ccreate it dynamically too i guess

string[] myString = new string[(i*4)];

cheers

[Plater]

There are many choices, if you truely CANNOT be certain of the size you will need, even at runtime, consider using something from the System.Collecti ons namespace. (I use ArrayList, but there are plenty of others).
Once you have a populated ArrayList (or collection of some sort) they have a function that can be used to turn it into a pure array (such as string[])

[r035198x]

I have been trying to declare a string[] with a dynamic amount of elements (in C#). but everything i try gives me an error of some sort.

i have tried

string[] myString = new string[];

wont compile and gives an error of "Array creation must have array size or array initializer".

string[] myString = null;

will compile but will give an "Object reference not set to an instance of an object" error.

string[] myString;

gives a compile error of "Use of unassigned local variable "myString""
none of these seem to work. help please.

If your C# textbook has no section for declaring and initializing arrays, then shame on its author and shame on the guy who recommended that book to you.

[Shashi Sadasivan]

If your C# textbook has no section for declaring and initializing arrays, then shame on its author and shame on the guy who recommended that book to you.

Sometimes its an advantage to have learnt C :P
You learn to debug that way.

[devicemangler]

I found a workaround for it, the project i am working on requires me to load data from a database into an array, so i first made a query to the table to find out how many records it held, then used that number in the declaration of the array.

it works for now. also the book i have been using is "Sams teach yourself c# in 21 days" though i've been using the net a lot more than the book (the book only barely scratches the surface of winforms).

[r035198x]

I found a workaround for it, the project i am working on requires me to load data from a database into an array, so i first made a query to the table to find out how many records it held, then used that number in the declaration of the array.

it works for now. also the book i have been using is "Sams teach yourself c# in 21 days" though i've been using the net a lot more than the book (the book only barely scratches the surface of winforms).

Don't connect to the database twice to get one set of data. Just use an ArrayList instead. If you really need to use an array you can create the array from the ArrayList. If Sam didn't talk about dynamic arrays in his book then shame on him.