forms - c# how can i get my listbox item and add it quickly when i pressed checklistboxes -


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hello still confuse how can listbox items , when click every checklistboxes , want add numbers , display in textbox. example check checklistbox index 1 contains 300 display in textbox. check index 2 of checkboxlist contains 100 display 400. if check index 3 of checkboxlist contains 200 display 600 in checkbox.

my code:

namespace ggg { public partial class form1 : form {      public form1()     {         initializecomponent();       }      private void form1_load(object sender, eventargs e)     {      }      private void checkedlistbox1_selectedindexchanged(object sender, eventargs e)     {          listbox1.items.clear();         listbox2.items.clear();         textbox1.clear();         foreach (string s in checkedlistbox1.checkeditems)         listbox1.items.add(s);         foreach (int in checkedlistbox1.checkedindices)         {             if (i == 0)             {                 listbox2.items.add(300);                 decimal total = 300;                 textbox1.text += total;             }             if (i == 1)             {                 listbox2.items.add(100);                 decimal total = 100;                 textbox1.text += total;             }             if (i == 2)             {                 listbox2.items.add(200);                 decimal total = 200;                 textbox1.text += total;              }         }       }    } }

you can sum listbox items . after , can set total textbox

        int total = 0;         (int = 0; < listbox2.items.count; i++)         {             total = total+ int.parse(listbox2.items[i].tostring());         }         textbox1.text = total.tostring();

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