There is tableview with 3 columns
id | stack | amount
1 | Древесина | 5
I need minus 1 from the value of the cell(amount) by pressing the button.
ObservableList<ModelTable> oblist = FXCollections.observableArrayList();
#Override
public void initialize(URL location, ResourceBundle resources) {
//DB
try {
Connection con = DBConn.getConnection();
ResultSet rs = con.createStatement().executeQuery("select * from piles");
while (rs.next()) {
oblist.add(new ModelTable(rs.getString("num_pile"), rs.getString("gruz"), rs.getInt("amount")));
}
}catch (SQLException ex){
Logger.getLogger(Controller.class.getName()).log(Level.SEVERE, null, ex);
}
col_id.setCellValueFactory(new PropertyValueFactory<>("id"));
col_pile.setCellValueFactory(new PropertyValueFactory<>("pile"));
col_amount.setCellValueFactory(new PropertyValueFactory<>("amount"));
table.setItems(oblist);
buttonAdd.setOnAction(e -> {
ModelTable selectedItem = table.getSelectionModel().getSelectedItem();
//minus 1 of cell value
});
My english is not perfect. I hope you understood. Thanks!
Related
This is my first time using Derby database and I am having trouble adding information into my tableview.
public class AddController implements Initializable {
final String DB_URL = "jdbc:derby:StudentDB;";
#FXML TableView<Student> studentListView;
#FXML TableColumn stuName;
#FXML TableColumn stuAge;
#FXML TableColumn stuMajor;
#FXML TableColumn stuGPA;
#FXML ComboBox ageCB;
#FXML ComboBox majorCB;
#FXML ComboBox gpaCB;
ObservableList<Student> studentList;
#Override
public void initialize(URL url, ResourceBundle resourceBundle) {
studentList = FXCollections.observableArrayList();
createDB();
createStudentsDB();
studentListView.setItems(studentList);
}
public void createDB(){
try
{
Connection conn = DriverManager.getConnection("jdbc:derby:StudentDB;create=true");
conn.close();
System.out.println("Connection successful");
}
catch(Exception ex)
{
System.out.println("ERROR: " + ex.getMessage());
}
}
public void createStudentsDB(){
try{
Connection conn = DriverManager.getConnection(DB_URL);
Statement stmt = conn.createStatement();
stmt.execute("DROP TABLE Student");
stmt.execute("CREATE TABLE Student (" +
"Name CHAR(25), " +
"Age INT, " +
"Major CHAR(45), " +
"GPA DECIMAL, ");
String sql = "INSERT INTO Student VALUES" +
"('Robert', 21, 'Computer Information Systems', 3.8)";
stmt.executeUpdate(sql);
String sqlStatement = "SELECT Name, Age, Major, GPA FROM Student";
ResultSet result = stmt.executeQuery(sqlStatement);
ObservableList<Student> studentList = FXCollections.observableArrayList();
while (result.next())
{
Student newStudent = new Student();
newStudent.name = result.getString("Name");
newStudent.age = result.getInt("Age");
newStudent.major = result.getString("Major");
newStudent.gpa = result.getDouble("GPA");
studentList.add(newStudent);
}
stmt.close();
conn.close();
}
catch (Exception ex)
{
var msg = ex.getMessage();
System.out.println(msg);
}
}
<TableView fx:id="studentListView" prefWidth="400">
<columns>
<TableColumn fx:id="stuName" text="Student" prefWidth="125"/>
<TableColumn fx:id="stuAge" text="Age" prefWidth="75"/>
<TableColumn fx:id="stuMajor" text="Major" prefWidth="125"/>
<TableColumn fx:id="stuGPA" text="GPA" prefWidth="75"/>
</columns>
</TableView>
I already created a TableView in FXML with the 4 columns I want. I just do not know how to get the information from the database to the TableView.
This code reads from a Derby Database the table is named Parent
We are using a MVC Model View Controller Pattern
And we strongly suggest you use the MVC concept when working with any database
private void ReadFromParent() throws SQLException{
ObservableList<ParentModel> TableData = FXCollections.observableArrayList();
stmnt = conn.createStatement();
ResultSet rs = stmnt.executeQuery("SELECT * FROM Parent");
while (rs.next()){// Add data to observableArrayList TableData to select a table ROW
TableData.add(new ParentModel(rs.getString("PID"),rs.getString("pMonth"),rs.getString("pYear")));
}
PropertyValueFactory<ParentModel, String> IDCellValueFactory = new PropertyValueFactory<>("PID");
colID.setCellValueFactory(IDCellValueFactory);
PropertyValueFactory<ParentModel, String> DateCellValueFactory = new PropertyValueFactory<>("pMonth");
colMonth.setCellValueFactory(DateCellValueFactory);
PropertyValueFactory<ParentModel, String> TypeCellValueFactory = new PropertyValueFactory<>("pYear");
colYear.setCellValueFactory(TypeCellValueFactory);
// ================================================================
// colTxDate are the ID's for the tableview columns
// sortDate are the Column Names for the Database TABLE CDBalance
// ================================================================
colMonth.setStyle("-fx-alignment: CENTER;");
colYear.setStyle("-fx-alignment:CENTER;");
Collections.sort(TableData, (p2, p1)-> p1.getPID().compareToIgnoreCase(p2.getPID()));
// Line of Code above Sorts Database Columns based on VARIABLE in ParentModel
// Change p2,p1 to sort Ascending or Descending
if(TableData.size() < 15) {// Format TableView to display Vertical ScrollBar
ptable.setPrefWidth(336);// 19 is the off set
}else {
ptable.setPrefWidth(355);
} ptable.setItems(TableData);
stmnt.close();
}
I am new to Javafx and trying to read and understand tutorials on the internet of how to create charts with data from a Derby database using Scenebuilder.
I have managed to create a bar chart - which works fine.
But I am having some trouble getting the same data shown in a pie chart. Scene builder starts but no pie chart is shown.
What am I missing to have it shown as a pie chart?
Thanks for any help :-)
My code:
public class DocumentController implements Initializable {
#FXML
PieChart piechart;
private Connection connexion;
ArrayList < String > p = new ArrayList < String > ();
ArrayList < Double > c = new ArrayList < > ();
#Override
public void initialize(URL url, ResourceBundle rb) {
loadData();
}
public void loadData() {
String query = "select P, C From PIE "; //ORDER BY P asc
ObservableList < PieChart.Data > piechartdata;
piechartdata = FXCollections.observableArrayList();
try {
connexion = connectDB();
ResultSet rs = connexion.createStatement().executeQuery(query);
while (rs.next()) {
piechartdata.add(new PieChart.Data(rs.getString("P"), rs.getDouble("C")));
p.add(rs.getString("P"));
c.add(rs.getDouble("C"));
}
} catch (Exception e) {
}
}
private Connection connectDB() {
try {
String dbString = "jdbc:derby://localhost:1527/Pie";
String user = "pie";
String password = "pie";
Connection conn = DriverManager.getConnection(dbString, user, password);
System.out.println("Connection Ok");
return conn;
} catch (SQLException ex) {
Logger.getLogger(DocumentController.class.getName()).log(Level.SEVERE, null, ex);
}
return null;
}
}
I think you forgot to set the data of your ObservableList to your pieChart
try something like this:
piechart.setData(piechartdata);
piechart.setVisible(true);
I'm asking for your help.
I'm developing an application in JavaFX who "scan" Mp3 files to get ID3tag.
Here is my problem. I did a foreach loop of a list for every .mp3 found but I'd like to increment a label which inform the progression of the list.
Here is my code
private ArrayList checkMp3File(ArrayList<String> lsMp3file, String sDir) throws UnsupportedTagException, InvalidDataException, IOException
{
this.currentData = 1;
int size = lsMp3file.size();
ArrayList<DataSong> lsds = new ArrayList<>();
for(String mp3file : lsMp3file)
{
this.labelUpdate.setText(this.current++ + " of " + " size");
DataSong ds = new DataSong();
Mp3File mp3 = new Mp3File(mp3file);
ds.setLenghtOfMp3inSec(mp3.getLengthInSeconds());
ds.setBitRateOfMp3(mp3.getBitrate());
ds.setSampleRate(mp3.getSampleRate());
ds.setVbrOrCbr(mp3.isVbr());
}
Actually, when the loop progress my window interface is completely freeze.
And only when the loop is finished, the label updated.
Someone can explain why ?
I already thank you for your answers.
EDIT :
Here is my fully code
public class LaunchOption extends Pane {
private final HBox launchAndSend = new HBox();
private final HBox browseAndField = new HBox();
private final HBox jsonAndAdvance = new HBox();
private ArrayList<DataSong> lsWithData = new ArrayList<>();
private String sendJson;
private File selectedDirectory;
private User user;
private int currentData;
private final ProgressIndicator pi = new ProgressIndicator(0);
private final VBox containerElement = new VBox();
private final TextArea displayJson = new TextArea();
private final TextField pathDir = new TextField();
private final TextField nbrOfData = new TextField();
private final Button btnScan = new Button();
private final Button btnSend = new Button();
private final Button btnCheckJson = new Button();
private final Button btnDirectoryBrowser = new Button();
private final Label nbMp3 = new Label();
public Label listAdvance = new Label();
private final Stage home;
public LaunchOption(Stage home){
this.home = home;
configureBtnCheckJson();
configureBtnScan();
configureBtnSend();
configureLabelMp3();
configureBtnDirectoryBrowser();
configureTextAreaDisplayJson();
configureTextFieldPathDir();
configureTextFieldNbDataMp3();
configureHBoxlaunchSend();
configureHBoxBrowseAndField();
configureHBoxJsonAndAdvance();
configureContainer();
this.getChildren().addAll(containerElement,launchAndSend);
}
private void configureLabelMp3()
{
nbMp3.setText("MP3");
}
private void configureBtnScan(){
btnScan.setText("Scan");
btnScan.setOnAction(event->{
ArrayList<String> Mp3FileData;
Mp3FileData = mapFilesMp3(selectedDirectory.getAbsolutePath());
System.out.println("ListSize = " + Mp3FileData.size());
nbrOfData.setText(String.valueOf(Mp3FileData.size()));
try {
lsWithData = checkMp3File(Mp3FileData, selectedDirectory.getAbsolutePath());
} catch (UnsupportedTagException ex) {
Logger.getLogger(MusiScanMp3agic.class.getName()).log(Level.SEVERE, null, ex);
} catch (InvalidDataException ex) {
Logger.getLogger(MusiScanMp3agic.class.getName()).log(Level.SEVERE, null, ex);
} catch (IOException ex) {
Logger.getLogger(MusiScanMp3agic.class.getName()).log(Level.SEVERE, null, ex);
}
pi.setProgress(1);
});
}
private void configureBtnDirectoryBrowser(){
btnDirectoryBrowser.setText("Browse ...");
btnDirectoryBrowser.getStyleClass().add("round-red");
btnDirectoryBrowser.setOnAction(event-> {
DirectoryChooser dc = new DirectoryChooser();
selectedDirectory = dc.showDialog(home);
pi.setProgress(0.35);
if(selectedDirectory == null)
{
pathDir.setText("No directory selected");
}
else
{
pathDir.setText(selectedDirectory.getAbsolutePath());
String Text = pathDir.getText();
System.out.println(Text.toString());
}
});
}
private static String regexMp3()
{
return "^.*\\.(mp3)$";
}
private ArrayList mapFilesMp3(String sDir){
ArrayList<String> ls = new ArrayList<>();
printFnames(sDir,ls);
return ls;
}
private static void printFnames(String sDir, ArrayList<String> ls)
{
File[] faFiles = new File(sDir).listFiles();
for(File file : faFiles)
{
if(file.getName().matches(regexMp3()))
{
// System.out.println(file.getAbsolutePath());
ls.add(file.getAbsolutePath());
}
if(file.isDirectory())
{
printFnames(file.getAbsolutePath(), ls);
}
}
}
private ArrayList checkMp3File(ArrayList<String> lsMp3file, String sDir) throws UnsupportedTagException, InvalidDataException, IOException
{
this.currentData = 1;
int size = lsMp3file.size();
ArrayList<DataSong> lsds = new ArrayList<>();
for(String mp3file : lsMp3file)
{
System.out.println(this.currentData++);
DataSong ds = new DataSong();
Mp3File mp3 = new Mp3File(mp3file);
ds.setLenghtOfMp3inSec(mp3.getLengthInSeconds());
ds.setBitRateOfMp3(mp3.getBitrate());
ds.setSampleRate(mp3.getSampleRate());
ds.setVbrOrCbr(mp3.isVbr());
if(mp3 != null){
ds.setAbsoluteLocation(mp3.getFilename());
ds.setLocation(removeSDir(mp3.getFilename(), sDir));
if(mp3.hasId3v2Tag())
{
ID3v2 id3v2Tag = mp3.getId3v2Tag();
if(!(id3v2Tag.getArtist() == null))
{
ds.setArtist(id3v2Tag.getAlbumArtist());
}
if(!(id3v2Tag.getAlbum() == null))
{
ds.setAlbum((id3v2Tag.getAlbum()));
}
if(!(id3v2Tag.getTitle() == null))
{
ds.setTitle(id3v2Tag.getTitle());
}
if(!(id3v2Tag.getTrack() == null))
{
ds.setTrackOnAlbum(id3v2Tag.getTrack());
}
if(!(id3v2Tag.getYear() == null) && !(id3v2Tag.getYear().isEmpty()))
{
ds.setYearReleased(id3v2Tag.getYear());
}
if(!(id3v2Tag.getGenreDescription() == null))
{
ds.setGenre(id3v2Tag.getGenreDescription());
}
if(!(id3v2Tag.getComposer() == null))
{
ds.setComposer(id3v2Tag.getComposer());
}
if(!(id3v2Tag.getPublisher() == null))
{
ds.setPublisher(id3v2Tag.getPublisher());
}
if(!(id3v2Tag.getOriginalArtist() == null))
{
ds.setOriginArtist(id3v2Tag.getOriginalArtist());
}
if(!(id3v2Tag.getAlbumArtist() == null))
{
ds.setAlbumArtString(id3v2Tag.getAlbumArtist());
}
if(!(id3v2Tag.getCopyright() == null))
{
ds.setCopyright(id3v2Tag.getCopyright());
}
if(!(id3v2Tag.getUrl() == null))
{
ds.setUrl(id3v2Tag.getUrl());
}
}
}
lsds.add(ds);
}
return lsds;
}
I presume that what I should do is to make my checkMp3File method into a Task method which will do a background thread ?
There is not enough code to be sure but I think you are probably calling your method on the JavaFX application thread which then blocks your UI.
You should read the documentation about concurrency in JavaFX.
https://docs.oracle.com/javase/8/javafx/interoperability-tutorial/concurrency.htm
in this i m fetching data from database i.e. question and answer and accordingly numbers of answer in the database equals to number of checked box created dynamically and i want that the when the user checked the checked box the value of that checked box must me save in sqlite database
public class Multiselect extends Fragment
{
TextView ques;
DefaultHttpClient httpclient;
HttpPost httppost;
HttpResponse httpResponse;
HttpEntity httpEntity;
HttpResponse response;
HttpEntity entity;
InputStream is = null;
String result = null;
StringBuilder sb=null;
BufferedReader reader;
JSONArray jArray;
String line;
String question;
String answer;
int questionno;
int i;
View view;
Context context;
int id=1;
CheckBox checkboxbutton;
final CheckBox[] checkboxbuttons = new CheckBox[50];
LinearLayout l;
//DatabaseMultiselect db;
String text;
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
}
public void onActivityCreated(Bundle savedInstanceState)
{
super.onActivityCreated(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
view = inflater.inflate(R.layout.multiselect, container, false);
l=(LinearLayout)view.findViewById(R.id.l1);
/*String l1=l.toString();
String strtext=getArguments().getString("next");
Log.e("str",strtext);*/
StrictMode.enableDefaults();
ques=(TextView)view.findViewById(R.id.quesmultiselect);
//db=new DatabaseMultiselect(getActivity());
// db.open();
getMultiselect();
getAnswer(container);
Log.e("id",""+id);
Log.e("count",""+l.getChildCount());
return view;
}
void getMultiselect()
{
try
{
httpclient=new DefaultHttpClient();
// httppost= new HttpPost("http://10.0.2.2/multiselectandroid.php");
httpResponse = httpclient.execute(httppost);
httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
}
catch(Exception e)
{
Log.e("log_tag", "Error in http connection"+e.toString());
ques.setText("error!!");
}
//convert response to string
try
{
reader = new BufferedReader(new InputStreamReader(is,"iso-8859-1"),8);
sb = new StringBuilder();
sb.append(reader.readLine() + "\n");
while ((line = reader.readLine()) != null)
{
sb.append(line + "\n");
}
is.close();
result=sb.toString();
}
catch(Exception e)
{
Log.e("log_tag", "Error converting result "+e.toString());
}
//paring data
try
{
jArray = new JSONArray(result);
JSONObject json_data=null;
for(i=0;i<jArray.length();i++)
{
json_data = jArray.getJSONObject(i);
questionno=json_data.getInt("question_no");
question=json_data.getString("question");
Log.e("question",question);
//s=s+""+question;
}
ques.setText(question);
}
catch(JSONException excep)
{
excep.printStackTrace();
//Toast.makeText(getBaseContext(), "Error", Toast.LENGTH_LONG).show();
}
catch (ParseException excep)
{
excep.printStackTrace();
}
}
void getAnswer(ViewGroup container)
{
try
{
httpclient=new DefaultHttpClient();
httppost= new HttpPost("http://10.0.2.2/multiselectanswer.php?questionno="+questionno);
httpResponse = httpclient.execute(httppost);
httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
}
catch(Exception e)
{
Log.e("log_tag", "Error in http connection"+e.toString());
ques.setText("error!!");
}
//convert response to string
try
{
reader = new BufferedReader(new InputStreamReader(is,"iso-8859-1"),8);
sb = new StringBuilder();
sb.append(reader.readLine() + "\n");
while ((line = reader.readLine()) != null)
{
sb.append(line + "\n");
}
is.close();
result=sb.toString();
}
catch(Exception e)
{
Log.e("log_tag", "Error converting result "+e.toString());
}
//pairing data
try
{
jArray = new JSONArray(result);
JSONObject json_data=null;
for(i=0;i<jArray.length();i++)
{
json_data = jArray.getJSONObject(i);
answer=json_data.getString("answer");
checkboxbuttons[i] = new CheckBox(container.getContext());
checkboxbuttons[i].setId(id);
l.addView(checkboxbuttons[i]);
checkboxbuttons[i].setText(answer);
checkboxbuttons[i].setTextColor(Color.RED);
int rid=checkboxbuttons[i].getId();
Log.e("rid",""+rid);
id++;
}
/* if(id.getCheckedRadioButton==true)
{
String selected=chk;
Log.e("select",selected);
}*/
}
catch(JSONException excep)
{
excep.printStackTrace();
//Toast.makeText(getBaseContext(), "Error", Toast.LENGTH_LONG).show();
}
catch (ParseException excep)
{
excep.printStackTrace();
}
}
}
public class Multiselect extends Fragment
{
//Declaring variables
TextView ques;
TextView condition;
TextView sectionidtext;
TextView instructions;
String instructionset;
int question_no;
String question1;
String surveyName;
String selectedQues;
String username;
int min_answers;
int max_answers;
int id=1;
DatabaseHandler db;
String rating=null;
View view;
final CheckBox[] answercheckbox = new CheckBox[50];
LinearLayout answersettinglayout;
String answertext;
int count=0;
String limit;
String sectionids;
String date=null;
String time=null;
String tablename="multiselect";
String input_answer=null;
String userid;
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
//Getting Question number,user name,survey name,questionnaire name and user id value
Bundle mulitselectBundle=getArguments();
question_no=mulitselectBundle.getInt("questionnum");
surveyName=mulitselectBundle.getString("surveyname");
selectedQues=mulitselectBundle.getString("quesname");
username=mulitselectBundle.getString("username");
userid=mulitselectBundle.getString("userid");
Log.e("mulitselect"," "+question_no);
Log.e("mulitselect",surveyName);
Log.e("mulitselect",selectedQues);
Log.e("mulitselect",username);
Log.e("mulitselect",userid);
}
public void onActivityCreated(Bundle savedInstanceState)
{
super.onActivityCreated(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
view = inflater.inflate(R.layout.multiselect, container, false);
//Getting id of Linear Layout for answers
answersettinglayout=(LinearLayout)view.findViewById(R.id.answersetting);
//Getting id of text view for question
ques=(TextView)view.findViewById(R.id.quesmultiselect);
//Getting id of textview for conditions
condition=(TextView)view.findViewById(R.id.conditionmulti);
//Getting id of textview for section id
sectionidtext=(TextView)view.findViewById(R.id.sectionidmultiselect);
//Getting id of text view for instructions display
instructions=(TextView)view.findViewById(R.id.instructionmultiselect);
//Create object of database
db=new DatabaseHandler(getActivity());
//Function call
retrieveQuestion();
getAnswer(container);
getcheckedCheckBoxes();
return view;
}
void retrieveQuestion()
{
//Open database
db.open();
Log.e("inside","retrieve question");
//Fetching value of question and section id
Cursor questioncursor=db.getQuestion(username,surveyName,selectedQues,question_no);
int length=questioncursor.getCount();
Log.e("length",""+length);
//Getting question and section id
if(questioncursor.moveToFirst())
{
//Getting column number
int indexquestion=questioncursor.getColumnIndex("question");
Log.e("index",""+indexquestion);
//Getting value of question and section id
question1= questioncursor.getString(indexquestion);
sectionids=questioncursor.getString(questioncursor.getColumnIndex("ques_id"));
//Setting question
ques.setText(question1);
Log.e("question",question1);
//Setting section id
sectionidtext.setText("Q."+sectionids);
}
//Closing cursor
questioncursor.close();
}
void getAnswer(ViewGroup container)
{
//Open database
db.open();
Log.e("inside","answer question");
//Fetching answers
Cursor answergettingcursor=db. getAnswer(username,surveyName,selectedQues,question_no);
//Declaring variable
int i=0;
//Getting answer value
while(answergettingcursor.moveToPosition(i))
{
//Getting column number
int indexanswer=answergettingcursor.getColumnIndex("answer");
//creating check boxes
answercheckbox[i] = new CheckBox(container.getContext());
//Setting id of check boxes
answercheckbox[i].setId(id);
//Adding check boxes in layout
answersettinglayout.addView(answercheckbox[i]);
//Setting answer value
answercheckbox[i].setText(answergettingcursor.getString(indexanswer));
//Setting text color
answercheckbox[i].setTextColor(Color.RED);
int rid=answercheckbox[i].getId();
Log.e("rid",""+rid);
//Incrementing value
id++;
i++;
}
//Closing cursor
answergettingcursor.close();
}
void getcheckedCheckBoxes()
{
Log.e("id",""+id);
Log.e("count",""+answersettinglayout.getChildCount());
//Fetching value of minimum and maximum characters
Cursor checkcondition=db.getmultiselecttabledata(username, surveyName, selectedQues, question_no);
//For Conditions
if(checkcondition.moveToFirst())
{
//Getting column number
int indexmin_answers=checkcondition.getColumnIndex("min_answers");
int indexmax_answers=checkcondition.getColumnIndex("max_answers");
Log.e("indexanswer",""+indexmin_answers);
Log.e("indexanswer1",""+indexmax_answers);
//Getting value of minimum and maximum characters and instructions
min_answers=checkcondition.getInt(indexmin_answers);
max_answers=checkcondition.getInt(indexmax_answers);
instructionset=checkcondition.getString(checkcondition.getColumnIndex("instructions"));
Log.e("texttableview",""+min_answers);
Log.e("texttableview",""+max_answers);
//Setting value of instructions
instructions.setText(instructionset);
//For answers
for(int k=0;k<answersettinglayout.getChildCount();k++)
{
//Whether check box checked or not
answercheckbox[k].setOnClickListener(new OnClickListener()
{
public void onClick(View v)
{
//If check box checked
if(((CheckBox) v).isChecked())
{
//Incrementing value of count
count++;
Log.e("count",""+count);
//Getting value of checked check box
answertext=((CheckBox) v).getText().toString();
Log.e("checkbox",""+answertext);
//Checking min and max character conditions
if(count>=min_answers)
{
if(count>max_answers)
{
//Setting text
condition.setText("Selected answers exceeds maximum length");
//Setting text color
condition.setTextColor(Color.RED);
//Setting value of limit
limit="max";
}
else
{
//Setting text
condition.setText("");
//Setting value of limit
limit="proper";
}
}
else
{
//Setting text
condition.setText("Please select more answers");
//Setting text color
condition.setTextColor(Color.RED);
//Setting value of limit
limit="min";
}
//Inserting answers
db.insertAnswer(userid,username,surveyName,selectedQues,question_no,question1,answertext,rating,input_answer,limit,date,time,sectionids,tablename);
}
//if unchecked check box
else
{
//Decreasing count value
count--;
Log.e("count",""+count);
//Getting value of checked check box
answertext=((CheckBox) v).getText().toString();
Log.e("checkboxdelete",""+answertext);
//Deleting unchecked check box value
db.deleteQuesMultiselect(userid,username, surveyName, selectedQues, question_no,answertext);
//Checking min and max character conditions
if(count>=min_answers)
{
if(count>max_answers)
{
//Setting text
condition.setText("Selected answers exceeds maximum length");
//Setting text color
condition.setTextColor(Color.RED);
}
else
{
//Setting text
condition.setText("");
}
}
else
{
//Setting text
condition.setText("Please select more answers");
//Setting text color
condition.setTextColor(Color.RED);
}
}
}
});
}
//Closing cursor
checkcondition.close();
}
}
}
For having the result like below and showing column 2 (user control) & column 3 (user control) grouped by column 1. I have made the code like below but it is slow , actually when I use just column 1 , loading is quick (5 seconds) , when I use column 1 & column2 (user control "document list") loading is 10 seconds, and when I use column 1 & column 2 (document list") & column3 ("DocTransList") loading is 45 seconds. I think my code in LINQ is not efficient , but I do not know how to solve it.
TRANSMITTAL No Documents REV
TT-001 DOC-001 01
DOC-002 01
public partial class Transmittals : System.Web.UI.Page
{
class TransmittalPresentationModel
{
public int TransID { get; set; }
public String TransmittalNo { get; set; }
public IEnumerable<tblDocument> Documents { get; set; }
public IEnumerable<tblTransmittall> DocTrans { get; set; }
}
private EDMSDataContext _DataContext;
protected void Page_Load(object sender, EventArgs e)
{
_DataContext = new EDMSDataContext();
if (!IsPostBack)
{
DisplayAuthors();
}
}
private void DisplayAuthors()
{
var query =
from transmittal in _DataContext.tbltransmittalNos
orderby transmittal.TRANSMITTAL
select new TransmittalPresentationModel
{
TransID = transmittal.TransID,
TransmittalNo = transmittal.TRANSMITTAL,
Documents = transmittal.tblTransmittalls.Select(Transmittals => Transmittals.tblDocument),
DocTrans = transmittal.tblTransmittalls
};
GridViewTransmittals.DataSource = query.ToList();
GridViewTransmittals.DataBind();
}
protected void GridViewTransmittals_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.DataItem == null) return;
TransmittalPresentationModel transmittal = (TransmittalPresentationModel)e.Row.DataItem;
DocumentList documentList = (DocumentList)e.Row.FindControl("DocumentList1");
DocTransList doctranslist = (DocTransList)e.Row.FindControl("DocTransList2");
documentList.Documents = transmittal.Documents;
documentList.DataBind();
doctranslist.DocTrans = transmittal.DocTrans;
doctranslist.DataBind();
}
}
Your having issues because your records all need to load into the GridView on each page load / refresh. This pulls from the database and draws each row each time which is time consuming.
Better options are to use Ajax to load your GridView.
Or use Paging on the server side and only give the data to your page it needs.