Variables are leaking from my methods in C# -


i have have block of code repeated throughout program inside button clicks exception of few variables. issue when go clicking 1 button button, plhtml starts leaking text previous button. did not happen before tried making method.

how can prevent variables leaking each other?

this method have attempted make

    string cleancombo1;     string cleancombo2;     string cleancombo3;     string cleancombo4;     string cleancombo;     public string gettextbetween(string firstpart, string secondpart, string lastpart)     {         string st1 = plhtmlp1.text;         int pfrom1 = st1.indexof(firstpart) + firstpart.length;         int pto1 = st1.indexof(lastpart, pfrom1);         if (st1.substring(pfrom1, pto1 - pfrom1).contains(secondpart))         {             cleancombo1 = st1.substring(pfrom1, pto1 - pfrom1);         }         string st2 = plhtmlp2.text;         int pfrom2 = st2.indexof(firstpart) + firstpart.length;         int pto2 = st2.indexof(lastpart, pfrom2);         if (st2.substring(pfrom2, pto2 - pfrom2).contains(secondpart))         {             cleancombo2 = st2.substring(pfrom2, pto2 - pfrom2);         }         string st3 = plhtmlp3.text;         int pfrom3 = st3.indexof(firstpart) + firstpart.length;         int pto3 = st3.indexof(lastpart, pfrom3);         if (st3.substring(pfrom3, pto3 - pfrom3).contains(secondpart))         {             cleancombo3 = st3.substring(pfrom3, pto3 - pfrom3);         }         string st4 = plhtmlp4.text;         int pfrom4 = st4.indexof(firstpart) + firstpart.length;         int pto4 = st4.indexof(lastpart, pfrom4);         if (st4.substring(pfrom4, pto4 - pfrom4).contains(secondpart))         {             cleancombo4 = st4.substring(pfrom4, pto4 - pfrom4);         }         cleancombo = cleancombo1 + cleancombo2 + cleancombo3 + cleancombo4;         return cleancombo;     }

and have 3 buttons (at moment) use method.

here example of code 1 of buttons contain

private void mbutton_click(object sender, eventargs e) {             string firstpart = "<strong>http://m2.";             string secondpart = "m.com</strong>";             string lastpart = "</p>";             gettextbetween(firstpart, secondpart, lastpart);             plhtml.text = filterhtml(cleancombo, "m.com"); }

not sure if other method made affects code here is

    public string filterhtml(string cleancombo, string endofstring)     {         cleancombo = cleancombo.replace("<strong>", "");         cleancombo = cleancombo.replace("<br />", "");         cleancombo = cleancombo.replace("</strong>", "");         cleancombo = cleancombo.replace(endofstring, "");         return cleancombo;     }

i think there problem scope of variables cleancombo1, cleancombo2, cleancombo3, cleancombo4. these should declared within scope of method gettextbetween. newer method use these variables , if gettextbetween not enter of if blocks, reuse garbage values inside cleancombox variables.


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