Regarding j combo box...

hi guys i hav created a combo box...something like
String [] provinces = {
     "Alava",
"Albacete",
     "Alicante",
     "Almeria"
JComboBox pro = new JComboBox(provinces);
now if i wan to retrieve the selected item how can i do it...i tried pro.getSelectedItem but it gives the error of null pointer...is it because the getselected item returns an object but then i tried to pass an array of Objects as well...but in vain..

http://java.sun.com/docs/books/tutorial/uiswing/components/combobox.html
Follow the bouncing link.
PS.

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Regarding input combo box list of values

Hi,
I am using JDev 11.1.1.5.0
I used the input combo box list of values in adf application based on VO.When I type a value in the input combo box and press TAB key,it gives first item of that list rather than that entered value and when I open the list, it shows the repeating values of the first item.
Please suggest me some solutions.

Hi,
hard to say based on your description. Try with 11.1.1.6 or 11.1.17 and if it reproduces, provide a test case based on the HR schema. Is that an option ? Then send it my way in a zip file renamed to "unzip". My mail address is in my OTN profile, just follow the named link left to this reply
Frank

Dynamic values using combo box

Hi,
i have a doubt regarding the combo box.
do clear it.
Company [ ]
bu[ ]
onselectio of company , i should get bu values....
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but the company name is not getting restored.
giude me with the code part...
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it would kind enough if some one help me.
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Could you provide how ur populating [bu]

Problem regarding Combo boxes in JSP

Hi all,
I have two combo boxes on jsp page, i want to fill the second CB by value of first CB, and both CBs have values from Database, i tried it many times but cant got solution
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http://forum.java.sun.com/thread.jspa?threadID=597553

Help regarding Combo Box

Hi,
I am trying to create a combo Box at run time.Can anybody tell me how do I get the value the user has selected and then assign it to a EditText. I am doing the coding in C#.
Thanks
Nirmala B.

Something like that ?
oNewItem = oForm.Items.Item("12"); // get my combobox in oNewItem
oCombo = (SAPbouiCOM.ComboBox)oNewItem.Specific; // get the combobox
string qry = oCombo.Selected.Description; //get the selected description in qry
Hth
Quentin

How to Bind a Combo Box so that it retrieves and display content corresponding to the Id in a link table and populates itself with the data in the main table?

I am developing a desktop application in Wpf using MVVM and Entity Frameworks. I have the following tables:
1. Party (PartyId, Name)
2. Case (CaseId, CaseNo)
3. Petitioner (CaseId, PartyId) ............. Link Table
I am completely new to .Net and to begin with I download Microsoft's sample application and
following the pattern I have been successful in creating several tabs. The problem started only when I wanted to implement many-to-many relationship. The sample application has not covered the scenario where there can be a any-to-many relationship. However
with the help of MSDN forum I came to know about a link table and managed to solve entity framework issues pertaining to many-to-many relationship. Here is the screenshot of my application to show you what I have achieved so far.
And now the problem I want the forum to address is how to bind a combo box so that it retrieves Party.Name for the corresponding PartyId in the Link Table and also I want to populate it with Party.Name so that
users can choose one from the dropdown list to add or edit the petitioner.

Hello Barry,
Thanks a lot for responding to my query. As I am completely new to .Net and following the pattern of Microsoft's Employee Tracker sample it seems difficult to clearly understand the concept and implement it in a scenario which is different than what is in
the sample available at the link you supplied.
To get the idea of the thing here is my code behind of a view vBoxPetitioner:
<UserControl x:Class="CCIS.View.Case.vBoxPetitioner"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:v="clr-namespace:CCIS.View.Case"
xmlns:vm="clr-namespace:CCIS.ViewModel.Case"
mc:Ignorable="d"
d:DesignWidth="300"
d:DesignHeight="200">
<UserControl.Resources>
<DataTemplate DataType="{x:Type vm:vmPetitioner}">
<v:vPetitioner Margin="0,2,0,0" />
</DataTemplate>
</UserControl.Resources>
<Grid>
<HeaderedContentControl>
<HeaderedContentControl.Header>
<StackPanel Orientation="Horizontal" HorizontalAlignment="Right">
<TextBlock Margin="2">
<Hyperlink Command="{Binding Path=AddPetitionerCommand}">Add Petitioner</Hyperlink>
| <Hyperlink Command="{Binding Path=DeletePetitionerCommand}">Delete</Hyperlink>
</TextBlock>
</StackPanel>
</HeaderedContentControl.Header>
<ListBox BorderThickness="0" SelectedItem="{Binding Path=CurrentPetitioner, Mode=TwoWay}" ItemsSource="{Binding Path=tblParties}" />
</HeaderedContentControl>
</Grid>
</UserControl>
This part is working fine as it loads another view that is vPetioner perfectly in the manner I want it to be.
Here is the code of vmPetitioner, a ViewModel:
Imports Microsoft.VisualBasic
Imports System.Collections.ObjectModel
Imports System
Imports CCIS.Model.Party
Namespace CCIS.ViewModel.Case
''' <summary>
''' ViewModel of an individual Email
''' </summary>
Public Class vmPetitioner
Inherits vmParty
''' <summary>
''' The Email object backing this ViewModel
''' </summary>
Private petitioner As tblParty
''' <summary>
''' Initializes a new instance of the EmailViewModel class.
''' </summary>
''' <param name="detail">The underlying Email this ViewModel is to be based on</param>
Public Sub New(ByVal detail As tblParty)
If detail Is Nothing Then
Throw New ArgumentNullException("detail")
End If
Me.petitioner = detail
End Sub
''' <summary>
''' Gets the underlying Email this ViewModel is based on
''' </summary>
Public Overrides ReadOnly Property Model() As tblParty
Get
Return Me.petitioner
End Get
End Property
''' <summary>
''' Gets or sets the actual email address
''' </summary>
Public Property fldPartyId() As String
Get
Return Me.petitioner.fldPartyId
End Get
Set(ByVal value As String)
Me.petitioner.fldPartyId = value
Me.OnPropertyChanged("fldPartyId")
End Set
End Property
End Class
End Namespace
And below is the ViewMode vmParty which vmPetitioner Inherits:
Imports Microsoft.VisualBasic
Imports System
Imports System.Collections.Generic
Imports CCIS.Model.Case
Imports CCIS.Model.Party
Imports CCIS.ViewModel.Helpers
Namespace CCIS.ViewModel.Case
''' <summary>
''' Common functionality for ViewModels of an individual ContactDetail
''' </summary>
Public MustInherit Class vmParty
Inherits ViewModelBase
''' <summary>
''' Gets the underlying ContactDetail this ViewModel is based on
''' </summary>
Public MustOverride ReadOnly Property Model() As tblParty
'''' <summary>
'''' Gets the underlying ContactDetail this ViewModel is based on
'''' </summary>
'Public MustOverride ReadOnly Property Model() As tblAdvocate
''' <summary>
''' Gets or sets the name of this department
''' </summary>
Public Property fldName() As String
Get
Return Me.Model.fldName
End Get
Set(ByVal value As String)
Me.Model.fldName = value
Me.OnPropertyChanged("fldName")
End Set
End Property
''' <summary>
''' Constructs a view model to represent the supplied ContactDetail
''' </summary>
''' <param name="detail">The detail to build a ViewModel for</param>
''' <returns>The constructed ViewModel, null if one can't be built</returns>
Public Shared Function BuildViewModel(ByVal detail As tblParty) As vmParty
If detail Is Nothing Then
Throw New ArgumentNullException("detail")
End If
Dim e As tblParty = TryCast(detail, tblParty)
If e IsNot Nothing Then
Return New vmPetitioner(e)
End If
Return Nothing
End Function
End Class
End Namespace
And final the code behind of the view vPetitioner:
<UserControl x:Class="CCIS.View.Case.vPetitioner"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:vm="clr-namespace:CCIS.ViewModel.Case"
mc:Ignorable="d"
Width="300">
<UserControl.Resources>
<ResourceDictionary Source=".\CompactFormStyles.xaml" />
</UserControl.Resources>
<Grid>
<Border Style="{StaticResource DetailBorder}">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<TextBlock Grid.Column="0" Text="Petitioner:" />
<ComboBox Grid.Column="1" Width="240" SelectedValuePath="." SelectedItem="{Binding Path=tblParty}" ItemsSource="{Binding Path=PetitionerLookup}" DisplayMemberPath="fldName" />
</Grid>
</Border>
</Grid>
</UserControl>
The problem, presumably, seems to be is that the binding path "PetitionerLookup" of the ItemSource of the Combo box in the view vPetitioner exists in a different ViewModel vmCase which serves as an ObservableCollection for MainViewModel. Therefore,
what I need to Know is how to route the binding path if it exists in a different ViewModel?
Sir, I look forward to your early reply bringing a workable solution to the problem I face.
Warm Regards,
Arun

Adding an event listener to combo box

I am working on a mortgage calculator and I cannot figure out how to add an event listener to a combo box.
I want to get the mortgage term and interest rate to calucate the mortgage using the combo cox. Here is my program.
Modify the mortgage program to allow the user to input the amount of a mortgage
and then select from a menu of mortgage loans: 7 year at 5.35%, 15 year at 5.50%, and
30 year at 5.75%. Use an array for the different loans. Display the mortgage payment
amount. Then, list the loan balance and interest paid for each payment over the term
of the loan. Allow the user to loop back and enter a new amount and make a new
selection, with resulting new values. Allow user to exit if running as an application
(can't do that for an applet though).
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.event.*;
import java.text.NumberFormat;
import java.util.Locale;
//creates class MortgageCalculator
public class MortgageCalculator extends JFrame implements ActionListener {
//creates title for calculator
     JPanel row = new JPanel();
     JLabel mortgageCalculator = new JLabel("MORTGAGE CALCULATOR", JLabel.CENTER);
//creates labels and text fields for amount entered
     JPanel firstRow = new JPanel(new GridLayout(3,1,1,1));
     JLabel mortgageLabel = new JLabel("Mortgage Payment $", JLabel.LEFT);
     JTextField mortgageAmount = new JTextField(10);
     JPanel secondRow = new JPanel();
     JLabel termLabel = new JLabel("Mortgage Term/Interest Rate", JLabel.LEFT);
     String[] term = {"7", "15", "30"};
     JComboBox mortgageTerm = new JComboBox(term);
     JPanel thirdRow = new JPanel();
     JLabel interestLabel = new JLabel("Interest Rate (%)", JLabel.LEFT);
     String[] interest = {"5.35", "5.50", "5.75"};
     JComboBox interestRate = new JComboBox(interest);
     JPanel fourthRow = new JPanel(new GridLayout(3, 2, 10, 10));
     JLabel paymentLabel = new JLabel("Monthly Payment $", JLabel.LEFT);
     JTextField monthlyPayment = new JTextField(10);
//create buttons to calculate payment and clear fields
     JPanel fifthRow = new JPanel(new GridLayout(3, 2, 1, 1));
     JButton calculateButton = new JButton("CALCULATE PAYMENT");
     JButton clearButton = new JButton("CLEAR");
     JButton exitButton = new JButton("EXIT");
//Display area
     JPanel sixthRow = new JPanel(new GridLayout(2, 2, 10, 10));
     JLabel displayArea = new JLabel(" ", JLabel.LEFT);
     JTextArea textarea = new JTextArea(" ", 8, 50);
public MortgageCalculator() {
     super("Mortgage Calculator");                     //title of frame
     setSize(550, 350);                                             //size of frame
     setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
     Container pane = getContentPane();
     GridLayout grid = new GridLayout(7, 3, 10, 10);
     pane.setLayout(grid);
     pane.add(row);
     pane.add(mortgageCalculator);
     pane.add(firstRow);
     pane.add(mortgageLabel);
     pane.add(mortgageAmount);
     pane.add(secondRow);
     pane.add(termLabel);
     pane.add(mortgageTerm);
     pane.add(thirdRow);
     pane.add(interestLabel);
     pane.add(interestRate);
     pane.add(fourthRow);
     pane.add(paymentLabel);
     pane.add(monthlyPayment);
     monthlyPayment.setEnabled(false);
     pane.add(fifthRow);
     pane.add(calculateButton);
     pane.add(clearButton);
     pane.add(exitButton);
     pane.add(sixthRow);
     pane.add(textarea); //adds texaarea to frame
     pane.add(displayArea);
     setContentPane(pane);
     setVisible(true);
     //Adds Listener to buttons
     calculateButton.addActionListener(this);
     clearButton.addActionListener(this);
     exitButton.addActionListener(this);
     mortgageTerm.addActionListener(this);
     interestRate.addActionListener(this);
public void actionPerformed(ActionEvent event) {
     Object command = event.getSource();
     JComboBox mortgageTerm = (JComboBox)event.getSource();
     String termYear = (String)mortgageTerm.getSelectedItem();
if (command == calculateButton) //calculates mortgage payment
     int year = Integer.parseInt(mortgageTerm.getText());
     double rate = new Double(interestRate.getText()).doubleValue();
     double mortgage = new Double(mortgageAmount.getText()).doubleValue();
     double interest = rate /100.0 / 12.0;
     double monthly = mortgage *(interest/(1-Math.pow(interest+1,-12.0 * year)));
               NumberFormat myCurrencyFormatter;
               myCurrencyFormatter = NumberFormat.getCurrencyInstance(Locale.US);
               monthlyPayment.setText(myCurrencyFormatter.format(monthly));
     if(command == clearButton) //clears all text fields
               mortgageAmount.setText(null);
               //mortgageTerm.setText(null);
               //interestRate.setText(null);
               monthlyPayment.setText(null);
          if(command == exitButton) //sets exit button
                    System.exit(0);
     public static void main(String[] arguments) {
          MortgageCalculator mor = new MortgageCalculator();

The OP already did this to both JComboBoxes.
mochatay, here is a new actionPerformed method for you to use.
I've improved a few things here and there...
1) You can't just cast the ActionEvent's source into a JComboBox!
What if it was a JButton that fired the event? Then you would get ClassCastExceptions (I'm sure you did)
So check for all options, what the source of the ActionEvent actually was...
2) You can't assume the user will always type in valid data.
So enclose the Integer and Double parse methods in try-catch brakcets.
Then you can do something when you know that the user has entered invalid input
(like tell him/her what a clumsy idiot they are !)
3) As soon as user presses an item in any JComboBox, just re-calculate.
I did this here by programmatically clicking the 'Calculate' button.
Alternatively, you could have a 'calculate' method, which does everything inside the
if(command==calculateButton) if-block.
This will be called when:
a)calculateButton is pressed
b)when either of the JComboBoxes are pressed.
public void actionPerformed (ActionEvent event)
        Object command = event.getSource ();
        if (command == calculateButton) //calculates mortgage payment
            int year = 0;
            double rate = 0;
            double mortgage = 0;
            double interest = 0;
            /* If user has input invalid data, tell him so
            and return (Exit from this method back to where we were before */
            try
                year = Integer.parseInt (mortgageTerm.getSelectedItem ().toString ());
                rate = new Double (interestRate.getSelectedItem ().toString ()).doubleValue ();
                mortgage = new Double (mortgageAmount.getText ()).doubleValue ();
                interest = rate / 100.0 / 12.0;
            catch (NumberFormatException nfe)
                /* Display a message Dialogue box with a message */
                JOptionPane.showMessageDialog (this, "Error! Invalid input!");
                return;
            double monthly = mortgage * (interest / (1 - Math.pow (interest + 1, -12.0 * year)));
            NumberFormat myCurrencyFormatter;
            myCurrencyFormatter = NumberFormat.getCurrencyInstance (Locale.US);
            monthlyPayment.setText (myCurrencyFormatter.format (monthly));
        else if (command == clearButton) //clears all text fields
            /* Better than setting it to null (I think) */
            mortgageAmount.setText ("");
            //mortgageTerm.setText(null);
            //interestRate.setText(null);
            monthlyPayment.setText ("");
        else if (command == exitButton) //sets exit button
            System.exit (0);
        else if (command == mortgageTerm)
            /* Programmatically 'clicks' the button,
            As is user had clicked it */
            calculateButton.doClick ();
        else if (command == interestRate)
            calculateButton.doClick ();
        //JComboBox mortgageTerm = (JComboBox) event.getSource ();
        //String termYear = (String) mortgageTerm.getSelectedItem ();
    }Hope this solves your problems.
I also hope you'll be able to learn from what I've indicated, so you can use similar things yourself
in future!
Regards,
lutha

Retrieve all values from project type when project type combo box is null

Hi,
We are facing a tight situation here. We have a scenario where we have 2 filter options.
1) Department ID
2) Project type
When department ID is selected all the department IDs should be populated in the combo box and the project type combo box should be empty.
Similarly, when project type is selected all the project types should be populated in the combo box and the department ID combo box should be empty.
Then, when more than one value is selected from department ID box and all the values from project type must be retrieved from query level (as per business logic).
How do we do this? Kindly help us with this situation.

Basically my situation slightly different.
I am trying to do a bulk insert on SQL Server table using prepared statement, during that time i am getting the exception. I am using JDBC-ODBC driver. However, if i do individual record insertion, it is working.
Any idea about this type of problem ?
Regards
Ramesh

How can i display the value fetched from my database back onto my combo box

i have saved a selected value from my combo box in my database.
i want to display the same value on my combo box to the user on a jsp page.
Can someone help me?

<%
String valueInYourDatabase="2";
String[] valuesToDisplay={"1","2","3"};
%>
<SELECT name="square_root_of_for">
<% for(int i=0;i<valuesToDisplay.lngth;i++){
String s=valuesToDisplay;
%>
<OPTION value="<%=s%>" <%=(s.equals(valueInYourDatabase)?"SELECTED":"")%> ><%=s%></OPTION>
<%}%>
</SELECT>
Something like this...
didn't compile it so their are surely errors ;)
regards
Alban

How to use the Combo Box In MAtrix Colums

HI Experts,
Good Mornong.How to use the Combo Box In MAtrix Colums?
Regards And Thanks,
M.Thippa Reddy

hi,
loading data in to the combobox on form load.but, it should be done when atleast one row is active.
the values what ever you are inserting in to combo should be less than or eqhal to 100 or 150.if it exceeds beyond that performance issue arises.it takes more time to load all the data.so, it is better to have 100 or less.
oMatrix.AddRow()
RS = Nothing
RS = ocompany.GetBusinessObject(SAPbobsCOM.BoObjectTypes.BoRecordset)
RS.DoQuery("select ItemCode,ItemName from oitm")
oCombo = oMatrix.Columns.Item("ColumnUID").Cells.Item(oMatrix.RowCount).Specific
For i = 1 To RS.RecordCount
      If RS.EoF = False Then
            oCombo.ValidValues.Add(RS.Fields.Item("ItemCode").Value,RS.Fields.Item("ItemName").Value)
            RS.MoveNext()
      End If
Next
the above code is inserting data from database to column combobox.
you can fill combo directly also as shown below.
oCombo.ValidValues.Add("x","1")
oCombo.ValidValues.Add("y","2")
oCombo.ValidValues.Add("z","3")
oCombo.ValidValues.Add("","")
and what ever the values you are filling into combo should be unique.other wise it shows valid value exists.
regards,
varma

How to display data in a grid after selecting topic from combo box?

could someone help me out? i'm displaying a combo box (about
20 items) vertically. when user selects one of these items, i'd
like for information regarding that choice to be displayed in my
data grid. thanks - Karl from Kansas

If you have the following:
<mx:ComboBox id="combo_box" dataProvider="{users}"
labelField="user_name" change="show_details(event)"
></mx:ComboBox>
<mx:DataGrid id="data_grid" >
<mx:columns>
<mx:DataGridColumn headerText="Name"
dataField="user_name"/>
<mx:DataGridColumn headerText="email"
dataField="email"/>
</mx:columns>
</mx:DataGrid>
private function show_details(evt:Event):void {
data_grid.dataProvider = evt.currentTarget.selectedItem
This assumes that your combo box data has a user_name and
email property value. Substitute your property values where needed.
Vygo

Access 2010 - How to display data from a table into a text box upon combo box selection?

Hi
I have a a table with 5 columns: month, year, USD, SGD, BAHT.
I created a form with a combo box for selection of the month and year, and I would like to set adjacent text boxes to show USD, SGD, BAHT information. How can i go about doing that?
From the Q&A here, most of them uses the function similar to this "=[Combo0].[Column](1)" to show the data in the text box, but this would require the combo box to list a whole bunch of details if i were to add in more currency values to the
table. Is it possible to not show this information in the combo box, but still populate data in the textboxes base on a selection on only the "month" and "year" in the combo box.

Hi,
According to your description, my understanding is that you want to show only the month/year in the combo box, we can choose the date, and it will display the value of USD/SGD/BAHT based on the month/year.
If it is, I recommend you try the steps:
Create a form based on your data source table>Add the combo box>combo box wizard>Find a record on my form based on the value I selected my combo box>Add mouth and year to selected fields
http://office.microsoft.com/en-us/access-help/create-a-list-of-choices-by-using-a-list-box-or-combo-box-HA010113052.aspx
If I misunderstand something, please let me know. We may upload some screenshots or a sample through OneDrive.
Regards,
George Zhao
TechNet Community Support

Can I have a blank field on my document when using a combo box with a drop down list in Word 2011 for Mac?

I am creating a drop down list using a combo box in the Developer tab. Once I protect my document I want the field to remain empty and not show any of the items on my drop down list. Is there a way to do this? Currently it shows one of the items on my list.
Thanks

Paul's answer is correct.
Since this is a Word IT forum for Windows, in the future you should use the
answers.microsoft.com forum. It specializes in Word for the Mac. BTW - Paul stops by there also, so you'll still get his advice from there. :-)
Kind Regards, Rich ... http://greatcirclelearning.com

Creation of datasource form combo box in SAP Business One SDK

Hi,
How to create the user datasource for combo box in SAP Business One SDK.
Regards,
Y.

Hello freind
yu can used following code for userdatasource when form loaded
            Dim Branch As SAPbouiCOM.ComboBox
            oform.DataSources.UserDataSources.Add("Ebranch", SAPbouiCOM.BoDataType.dt_SHORT_TEXT, 25)
            Branch = oform.Items.Item("3").Specific
            Branch.DataBind.SetBound(True, "", "Ebranch")

How to populate values from database into a Combo Box?

Hi,
How to display all the values of a field of a database table in a combo box inside a grid in B1 user defined form?
Regards,
Sudeshna.

Hi,
If you are trying to do this on a system form (I gues this is your case, reading the other question), for example Sales Orders, and you want to show the values from a User Defined Table (UDT), you just need to add a User Defined Field on Marketing Documents Line level, and say it is linked to the UDT.
SBO will automatically show the combo with the values on the Code field of the UDT.
Regards,
Ibai Peña
Sorry, I didn´t read the post well.
What you could do is each time the form is loaded, read the values from the table, and asign them as Valid Values for the combobox column. You can do this programatically, or using XML (which is recommended becouse of better performance).
Message was edited by: Ibai Peña

Regarding j combo box...

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