c# - Pass values from plain-text to a method on button click -

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i using below code login in using ldap authentication in asp.net. however, don't know how pass values plain-text code. want run through button click.

public class ldapauthentication {     private string _path;     private string _filterattribute;     public ldapauthentication(string path)     {         _path = path;      }     public bool isauthenticated(string domain, string username, string pwd)     {         string domainandusername = domain + @"\" + username;         directoryentry entry = new directoryentry(_path, domainandusername, pwd);          try         {             // bind native adsobject force authentication.             object obj = entry.nativeobject;             directorysearcher search = new directorysearcher(entry);             search.filter = "(samaccountname=" + username + ")";             search.propertiestoload.add("cn");             search.propertiestoload.add("mail");             searchresult result = search.findone();             if (null == result)             {                 return false;             }             //if (result != null)             //{             //    string mail = result.properties["mail"][0].tostring();              //}              // update new path user in directory             _path = result.path;             _filterattribute = (string)result.properties["cn"][0];             _filterattribute = (string)result.properties["mail"][0];         }         catch (exception ex)         {             throw new exception("error authenticating user. " + ex.message);         }         return true;     }     public string getgroups()     {         directorysearcher search = new directorysearcher(_path);         search.filter = "(cn=" + _filterattribute + ")";         search.filter = "(mail=" + _filterattribute + ")";         search.propertiestoload.add("memberof");         stringbuilder groupnames = new stringbuilder();         try         {             searchresult result = search.findone();             int propertycount = result.properties["memberof"].count;             string dn;             //int equalsindex, commaindex;              (int propertycounter = 0; propertycounter < propertycount;                  propertycounter++)             {                 dn = (string)result.properties["memberof"][propertycounter];                  //equalsindex = dn.indexof("=", 1);                 //commaindex = dn.indexof(",", 1);                 //if (-1 == equalsindex)                 //{                 //    return null;                 //}                 //groupnames.append(dn.substring((equalsindex + 1),                 //                  (commaindex - equalsindex) - 1));                 //groupnames.append("|");             }         }         catch (exception ex)         {             throw new exception("error obtaining group names. " +               ex.message);         }         return groupnames.tostring();     }  }

this may oversimplification but...

 public void loginbutton_clicked(object sender, eventargs e) {     ldapauthentication auth = new ldapauthentication("yourpath");     if (auth.isauthenticated("yourdomain", txtid.text, txtpassword.text))     {         //login passed     } }

i'm assuming using webforms , username textbox has id "txtid", , password textbox has id "txtpassword".

if not using webforms implementation different. spectacularbob mentioned, can't answer question until know ui framework using.


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