pass array from button to button

Question

Using C# and ASP.net, I have an array of doubles that is filled up with information from a file. When it is finally full it shows to the user how many fields are full in a label.

this code is to fill one array from a file, this code is inside a button.

double[] arrayX; //imagine this is a global variable.

string line;
int j = 0;

Stream data = FileUpload1.PostedFile.Inputstream;
StreamReader sr = new StreamReader(data);

line = sr.ReadLine();
while (line != null)
{
  arrayX[j] = Convert.ToDouble(line);
  j++;
  line = sr.ReadLine();
}
label1.Text = j.ToString();

Now in the web browser it shows the number of elements like this: No. of elements: __10___

if the user agrees with this number, he clicks the second button which will have to use the array that was filled for some other operation but in my webbrowser it says that the array is empty even if i have declare as a global variable.

So my question is, how can i read my array data from the second button?

COLD TOLD · Accepted Answer · 2012-11-09 16:50:38Z

1

you need to save the array in a view-data or session and then access the array from session or viewstate

in your original method

ViewState["mtarray"] = arrayX;

and in your button method

 arrayX=ViewState["mtarray"] as double[];

http://msdn.microsoft.com/en-us/library/ms972976.aspx

edited Nov 9, 2012 at 16:50

answered Nov 9, 2012 at 16:44

COLD TOLD

13.6k3 gold badges37 silver badges53 bronze badges

Sign up to request clarification or add additional context in comments.

5 Comments

Sam I am says Reinstate Monica Over a year ago

+0, You haven't explained what ViewData or a session is, nor have you explained to the OP why he is experiencing the behavior that he is. your answer likely won't help the OP very much

COLD TOLD Over a year ago

@Sam I am I did not finished answering my question I was just saving the what I put

Polyfun Over a year ago

+1 I think this answer is a sufficient starting point. Google can do the rest.

Polyfun Over a year ago

Ah yes, the "get in" first ploy.

JUAN Over a year ago

i try to save it as a session before then i recive an error cant remenber what it was, since firts i am tring to send one array and in another program it has to send an array of array i am goig to try the viewState to see if it works mean while thanks for the help

Collectives™ on Stack Overflow

pass array from button to button

1 Answer 1

5 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

5 Comments

Your Answer

Sign up or log in

Post as a guest

Related