Dynamiclly naming variables

saud_a_k

I have to name varibles depending on a count variable. I want to append it to the variable like int "newno" + count = new int(); This gives a syntax error I also tried takin the new value in a string, but that didn't work as well .. It said : A local variable named 'var' is already defined in this scope :wtf: when I tried string var = "newno" + count; and int var = new int(); HelP!! _____________________________________________________ Yea! I could be wrong...

etfintnick

Hi! What exactly are you trying to do? Are you sure you shouldn't be using arrays of some sort instead? An example: string[] varArray = new string[ sizeGoesHere ]; for( int i=0; i Zerxes

etfintnick

A little error snuck in.. for( int i=0; i< Zerxes

etfintnick

Ack.. That's what you get for trying to post code. This should be correct for( int i=0; i

saud_a_k

ok but that's no what I'm tryin to do.. I have a variable static int count = 0; . it is global. I am adding a text box each time I click a button say..

private void btnAddCond_Click(object sender, System.EventArgs e)
{
TextBox "tb" + count = new TextBox();
//..right here ..I need to make each textbox have a uniqe name as and when it is added..I can't do that!!:mad:
this.Controls.Add("tb" + count); // I want this to work..!!:mad:
}

I hope it explains my plight!!:(( Help PLZ _____________________________________________________ Yea! I could be wrong...

Stefan Troschuetz

Thought about using the Name property of TextBox class? Otherwise i don't see a need to give your variable a unique name, because it's gone as soon as you leave the event handler.

private void btnAddCond_Click(object sender, System.EventArgs e)
{
TextBox textbox1 = new TextBox();
this.Controls.Add(textbox1);
}
// identifier textbox1 is out of scope

saud_a_k

I thank you Mr. Stefan Troschütz :rose: Yes It works!! thankx _____________________________________________________ Yea! I could be wrong...

saud_a_k

as Mr. Stefan Troschütz has stated for TextBoxes , How do you do it for a simple Integer? _____________________________________________________ Yea! I could be wrong...

Stefan Troschuetz

What exactly do you want to do with your integers? I guess storing them in some way like the textboxes :confused: Take a look at the Collections namespace[^] which contains interfaces and classes that define various collections of objects, such as lists, queues, bit arrays, hashtables and dictionaries.

saud_a_k

I want to name anything (integers, long, double, char etc ) which does not have a name property Dynamically. ex.

static int count = 0; // global
//......
{
//..somewhere in the code
int "var" + count = new int() //you get an error on this.:eek:
}

do you get what I'm tryin' to say?? _____________________________________________________ Yea! I could be wrong...

Stefan Troschuetz

Yeah, I get but sorry this saud_a_k wrote: int "var" + count = new int() //you get an error on this isn't possible. To accomplish a similar effect you could use a SortedList[^] to store your integers whereby the key values are created by the term "var" + count.ToString().

Heath Stewart

You could use an IDictionary implementation like so:

Hashtable vars = new Hashtable();
for (int i=0; i< 10; i++)
vars["newno" + i.ToString()] = i;

Once your code is compiled, it cannot be changed. You either need to use Reflection Emit or the CodeDom to generate new source and compile it on the fly (Reflection Emit actually emits an assembly - no compilation necessary but it's far more complex and requires that you know and understand IL). For your compiled code, you can only maintain the appearance of dynamic variables. This is done through collections, dictionaries, or the ComponentModel (probably not the best idea in your case). Using the approach I described above would probably be the easiest way. To get the int, then, just do int i = (int)vars["newno0"];.

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