c# - How to hardcode login for username and password? -

i have windowadmin table. hardcode 4th record in table. if user key in username = admin , password = 123, log him in. below images , codes. thank much.

private void btnadminlogin_click(object sender, eventargs e) {     //retrieve connection information info app.config     string strconnectionstring = configurationmanager.connectionstrings["sacpconnection"].connectionstring;     //step 1: create connection     sqlconnection myconnect = new sqlconnection(strconnectionstring);     //step 2: create command     //for windowsadmin     string strcommandtext = "select * windowsadmin";     strcommandtext += "   winusername=@aname , winpassword=@apwd;";      sqlcommand cmd = new sqlcommand(strcommandtext, myconnect);     //for windowsadmin     cmd.parameters.addwithvalue("@aname", txtadminusername.text);     cmd.parameters.addwithvalue("@apwd", txtadminpasswd.text);       try     {         // step 3: open connection , retrieve data calling executereader         myconnect.open();         // step 4: access data         sqldatareader reader = cmd.executereader();          while (reader.read()) //for windowsadmin         {             if (messagebox.show("login successful") == dialogresult.ok)             {                 admin form = new admin(txtadminusername.text);                 form.show();                 /*                 login loginform = new login();                 this.visible = false;                 this.hide();                 adminlogin adminloginform = new adminlogin();                 this.visible = false;                 this.hide();                 */                 return;             }         }           //step 5: close connection         reader.close();         messagebox.show("invalid username or password ");      } } 

i think should code

private void btnadminlogin_click(object sender, eventargs e) {     if (txtadminusername.text=="<hardcoded_username>" && txtadminpasswd.text=="<hardcoded_password>")     {          //login hardcoded user          messagebox.show("login successful") == dialogresult.ok          //do stuff           return;     }     //retrieve connection information info app.config     string strconnectionstring = configurationmanager.connectionstrings["sacpconnection"].connectionstring;     //step 1: create connection     sqlconnection myconnect = new sqlconnection(strconnectionstring);     //step 2: create command     //for windowsadmin     string strcommandtext = "select * windowsadmin";     strcommandtext += "   winusername=@aname , winpassword=@apwd;";      sqlcommand cmd = new sqlcommand(strcommandtext, myconnect);     //for windowsadmin     cmd.parameters.addwithvalue("@aname", txtadminusername.text);     cmd.parameters.addwithvalue("@apwd", txtadminpasswd.text);        try     {         // step 3: open connection , retrieve data calling executereader         myconnect.open();         // step 4: access data         sqldatareader reader = cmd.executereader();          while (reader.read()) //for windowsadmin         {             if (messagebox.show("login successful") == dialogresult.ok)             {                 admin form = new admin(txtadminusername.text);                 form.show();                 /*                 login loginform = new login();                 this.visible = false;                 this.hide();                 adminlogin adminloginform = new adminlogin();                 this.visible = false;                 this.hide();                 */                 return;             }         }           //step 5: close connection         reader.close();         messagebox.show("invalid username or password ");      } }