C# GUI application that stores an array and displays the highest and lowest numbers by clicking a button -

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background:
this updated 13 hours ago have been researching , experimenting few. i'm new programming arena i'll short, i'm teaching myself c#

and i'm trying learn how have integers user's input textbox calculated button1_click appear on form. yes, class assignment think have handle on of not of it; that's why i'm turning guys.

problem:
i'm using microsoft visual studio 2010 in c# language, windows forms application , need create gui allows user enter in 10 integer values stored in array called button_click object. these values display highest , lowest values user inputted. thing array must declared above click() method.

this have come far:

namespace smallandlargegui {     public partial class form1 : form     {         public form1()         {             initializecomponent();         }          public void inputtext_textchanged(object sender, eventargs e)         {             this.text = inputtext.text;         }          public void submitbutton_click(object sender, eventargs e)         {             int uservalue;              if(int.tryparse(inputtext.text, out uservalue))          {           }          else          {             messagebox.show("please enter valid integer text box.");         }                int x;             x = convert.x.tostring();             int squaredresults = squared(x);             int cubedresults = cubed(x); squared(x);             squaredlabel.text = x.tostring() + " squared " + squaredresults.tostring();             cubedlabel.text = x.tostring() + " cubed " + cubedresults.tostring();         }         public static int squared(int x)         {             x = x * x;             return x;         }         public static int cubed(int x)         {             x = x * squared(x);             return x;             }     } }

now can't run program because line 38 shows error message of: 'system.convert' not contain definition 'x' still have have array holds 10 integers textbox , declared above click() method. please guys, me? due yesterday.

this looks homework, should try bit more that. here do: parse string (say it's comma-separated list of numbers), cast each value int , populate array. can either call .max() / .min() methods or loop through values of array , max / min value. here bit of code:

int n = 10; int[] numbers = (from sn in system.text.regularexpressions.regex.split(inputtext.text, @"\s*,\s*") select int.parse(sn)).toarray(); int max = numbers.max(); int min = numbers.min(); //int max = numbers[0]; //int min = numbers[0]; //for(int = 1; < n; i++) //{ //    if(max < numbers[i]) //    { //        max = numbers[i]; //    } //    if(min > numbers[i]) //    { //        min = numbers[i]; //    } //}

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