c# - Alert on gridview edit based on permission -

i have gridview edit option @ start of row. maintain seperate table called permission maintain user permissions. have 3 different types of permissions admin, leads, programmers. these 3 have access gridview. except admin if tries edit gridview on clicking edit option, need give alert this row has important validation , make sure make proper changes.

when edit, action happen on table called application. table has column called comments. alert should happen when try edit rows comments column have these values in them.

manlog datas funding approved exported applications

my try far.

public bool isapplicationuser(string username) {     return checkuser(username); }  public static bool checkuser(string username) {     string cs = configurationmanager.connectionstrings["connectionstring"].tostring();     datatable dt = new datatable();     using (sqlconnection connection = new sqlconnection(cs))     {         sqlcommand command = new sqlcommand();         command.connection = connection;         string strquery = "select * permissions appcode='nest' , userid = '" + username + "'";         sqlcommand cmd = new sqlcommand(strquery, connection);         sqldataadapter da = new sqldataadapter(cmd);         da.fill(dt);     }     if (dt.rows.count >= 1)         return true;     else         return true; }   protected void details_rowcommand(object sender, gridviewcommandeventargs e) {     string currentuser = httpcontext.current.request.logonuseridentity.name;     string str = configurationmanager.connectionstrings["connectionstring"].tostring();     string[] words = currentuser.split('\\');     currentuser = words[1];     bool appuser = isapplicationuser(currentuser);     if (appuser)     {         dataset ds = new dataset();         using (sqlconnection connection = new sqlconnection(str))         {             sqlcommand command = new sqlcommand();             command.connection = connection;             string strquery = "select role_cd user_role appcode='pm' , userid = '" + currentuser + "'";             sqlcommand cmd = new sqlcommand(strquery, connection);             sqldataadapter da = new sqldataadapter(cmd);             da.fill(ds);         }          if (e.commandname.equals("edit") && ds.tables[0].rows[0]["role_cd"].tostring().trim() != "admin")         {             int index = convert.toint32(e.commandargument);              gridview gvcurrentgrid = (gridview)sender;             gridviewrow row = gvcurrentgrid.rows[index];              string strid = ((label)row.findcontrol("lblid")).text;             string strappname = ((label)row.findcontrol("lblappname")).text;             response.redirect("addapplication.aspx?id=" + strid + "&appname=" + strappname + "&edit=true");         }     } } 

kindly let me know if need add something. suggestions.

public static bool checkuseradminornot(your arguments) {     string currentuser = httpcontext.current.request.logonuseridentity.name;     string str = configurationmanager.connectionstrings["connectionstring"].tostring();     string[] words = currentuser.split('\\');     currentuser = words[1];     bool appuser = isapplicationuser(currentuser);     if (appuser)     {         dataset ds = new dataset();         using (sqlconnection connection = new sqlconnection(str))         {             sqlcommand command = new sqlcommand();             command.connection = connection;             string strquery = "select role_cd user_role appcode='pm' , userid = '" + currentuser + "'";             sqlcommand cmd = new sqlcommand(strquery, connection);             sqldataadapter da = new sqldataadapter(cmd);             da.fill(ds);         }          if(user not admin)              return string want....         }     } } 

after response in ajax use response , redirect page , pass value in url want...