Add/remove rows in jTable

Hello,
I'm writing an application with Sun ONE Studio 4. The autogenerated code for a JTable is something like: jTable1.setModel(new javax.swing.table.DefaultTableModel...
How can I add / remove rows from this table? In principle it should work like this: model.removeRow(0); But I don't have a model name in the autogenerated code.
Thanks for your help, Elke

DefaultTableModel model = (DefaultTableModel)<table>.getModel();
model.doWhateverYouWant();
Cheers,
Ram

Similar Messages

Add/delete row in JTable

I went through the tutorial of JDK about how to programming JTable, i can NOT find a way to add/delete row into/from JTable.
I immagine it would be a difficult task because the data set it takes 'Object data[][]' is NOT dynamically grow/shrinkble.
Can we make it take ArrayList[] as input dataset so that the dataset can dynamically grow/shrink?
Any other way around to add/delete row?
THANKS for your consideration.

You have to write your own TableModel like extending AbstractTableModel. In that class add custom methods to add and remove rows. From those methods call fireTableRowsDeleted(..) and fireTableRowsInserted(..) to update UI.

File Parser that allows me to add/remove rows in a file

Hi,
Have been trying to write a file parser that takes as input a file containing > 100,000 lines. I am parsing each line with a given delimiter and pulling out the fields I require but the response is very slow. I'm loading the data into a JTable for viewing (So I now have a spread sheet )but what I want now is the ability to add/remove entire rows. I can't do this with a JTable, can only edit columns within rows. Does any one know of a better approach?
Thanks ... J

What I need to do is present all the rows to the user and have them delete/edit rows at will but only through the GUI. JTable has a delete row method but the problem I'm having is getting the modified data from the JTable to a file.
ie, file looks like
Name|Address|Number
Joe|some St|111
Mick|My Rd|222
Mary|My Ave|333
I want to present this data in a JTable ... done.
Now want to remove Mick row and change Mary's number to 999
So new file should now contain
Name|Address|Number
Joe|some St|111
Mary|My Ave|999
But problem is I'm dealing with > 200 columns and > 100,000 rows

White patch after removing row from JTable

I am working with JTable and removing item from table on clicking on button but after removing row there is white Patch on that row. I don�t want to show this white patch.
I did repaint table but that is also not working.
Any thoughts !!!!!!!

javax.swing.SwingUtilities.invokeLater(new Runnable(){
            public void run(){
              museTable.setBackground(Color.black);//your color here
          });

Problem removing rows from JTable

Hello,
I'm having an issue with a JTable that I'm using. At one point in my application, I want to remove all the rows from the table and regenerate them (from a database). When I try to remove the rows and do nothing else, they remain in the table. The rows are being removed from the model, as I have verified this in code, but the display does not refresh at all.
I am using custom renderers to change the background color of a cell based on its value, and I disabled them to see if that was the problem, but alas, it is not.
Any suggestions or ideas why this may be occurring?

I am using model.setRowCount(0); to clear the model, however the display never refreshes. Then you are doing something wrong because its that simple. Only a single line of code is required.
Perhaps I should have included this in my original post.Actually, you should have included demo code in your original post. That way we don't have to guess what you are doing.
If you need further help then you need to create a [url http://homepage1.nifty.com/algafield/sscce.html]Short, Self Contained, Compilable and Executable, Example Program (SSCCE) that demonstrates the incorrect behaviour, because I can't guess exactly what you are doing based on the information provided.
And don't forget to use the [url http://forum.java.sun.com/help.jspa?sec=formatting]Code Formatting Tags so the code retains its original formatting.

Removing Rows in JTable

I Wrote an application to display the report of sales in JTable format and create a button "cancel" to remove all rows in the JTable.
DefaultTableModel dtm=new DefaultTableModel();
JTable t=new JTable(dtm);
if(e.getSource()==cancel)
int i=0;
int rows=t.getRowCount();
while(i<rows)
dtm.removeRow(i);
i++;
When I click cancel,all rows are not removed.I have to click more than one time to cancel all the rows.kindly help me to remove all rows in the JTable in a single click.
Thanks in advance.

int i=0;
int rows=t.getRowCount();
while(i<rows)
dtm.removeRow(i);
i++;
When I click cancel,all rows are not removed.I have to
click more than one time to cancel all the rows.kindly
help me to remove all rows in the JTable in a single
click.Yeah, first you remove row0, and the previous row1 becomes row0, but you increase i, and remove the new row1 that is the previous row2, and so on. You should instead:
int rows = dtm.getRowCount();
while (--rows >= 0) {
dtm.removeRow(rows);

Remove row from JTable

I have a JTable, and after selecting a row of the JTable a dialog opens for me to perform an action. But when I close the dialog I want that the row I have selected has disapeared, that means that I want to refresh the view removing the selected row. How can I do this?

DefaultTableModel.removeRow(...);

Problem in adding/deleting rows in JTable

I am trying to add /remove rows from JTable whose first column is JButton and others are JComboBox's.If no rows are selected,new row is added at the end.If user selects some row & then presses insert button,new row is added below it.Rows can only be deleted if user has made some selection.Kindly help me,where i am making mistake.If any function is to be used.My code is as follows....
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;
import javax.swing.border.*;
public class JButtonTableExample extends JFrame implements ActionListener{
JComboBox mComboLHSType = new JComboBox();
JComboBox mComboRHSType = new JComboBox();
JLabel mLabelLHSType = new JLabel("LHS Type");
JLabel mLabelRHSType = new JLabel("RHS Type");
JButton mButtonDelete = new JButton("Delete");
JButton mButtonInsert = new JButton("Insert");
JPanel mPanelButton = new JPanel();
JPanel mPanelScroll = new JPanel();
JPanel mPanelCombo = new JPanel();
DefaultTableModel dm ;
JTable table;
int currentRow = -1;
static int mSelectedRow = -1;
public JButtonTableExample()
super( "JButtonTable Example" );
makeForm();
setSize( 410, 222 );
setVisible(true);
private void makeForm()
this.getContentPane().setLayout(null);
mPanelCombo.setLayout(null);
mPanelCombo.setBorder(new LineBorder(Color.red));
mPanelCombo.setBounds(new Rectangle(1,1,400,30));
mLabelLHSType.setBounds(new Rectangle(26,5,71,22));
mComboLHSType.setBounds(new Rectangle(83,5,100,22));
mLabelRHSType.setBounds(new Rectangle(232,5,71,22));
mComboRHSType.setBounds(new Rectangle(292,5,100,22));
mPanelCombo.add(mLabelLHSType,null);
mPanelCombo.add(mComboLHSType,null);
mPanelCombo.add(mLabelRHSType,null);
mPanelCombo.add(mComboRHSType,null);
mPanelScroll.setLayout(null);
mPanelScroll.setBorder(new LineBorder(Color.blue));
mPanelScroll.setBounds(new Rectangle(1,28,400,135));
mPanelButton.setLayout(null);
mPanelButton.setBorder(new LineBorder(Color.green));
mPanelButton.setBounds(new Rectangle(1,165,400,30));
mButtonInsert.setBounds(new Rectangle(120,5,71,22));
mButtonDelete.setBounds(new Rectangle(202,5,71,22));
mButtonDelete.addActionListener(this);
mButtonInsert.addActionListener(this);
mPanelButton.add(mButtonDelete,null);
mPanelButton.add(mButtonInsert,null);
dm = new DefaultTableModel();
//dm.setDataVector(null,
//new Object[]{"Button","Join","LHS","Operator","RHS"});
dm.setDataVector(new Object[][]{{"","","","",""}},
new Object[]{"","Join","LHS","Operator","RHS"});
table = new JTable(dm);
table.getTableHeader().setReorderingAllowed(false);
table.setRowHeight(25);
int columnWidth[] = {20,45,95,95,95};
TableColumnModel modelCol = table.getColumnModel();
for (int i=0;i<5;i++)
modelCol.getColumn(i).setPreferredWidth(columnWidth);
//modelCol.getColumn(0).setCellRenderer(new ButtonRenderer());
//modelCol.getColumn(0).setCellEditor(new ButtonEditor(new JCheckBox()));
modelCol.getColumn(0).setCellRenderer(new ButtonCR());
modelCol.getColumn(0).setCellEditor(new ButtonCE(new JCheckBox()));
modelCol.getColumn(0).setResizable(false);
setUpJoinColumn(modelCol.getColumn(1));
setUpLHSColumn(modelCol.getColumn(2));
setUpOperColumn(modelCol.getColumn(3));
setUpRHSColumn(modelCol.getColumn(4));
JScrollPane scroll = new JScrollPane(table);
scroll.setBounds(new Rectangle(1,1,400,133));
mPanelScroll.add(scroll,null);
this.getContentPane().add(mPanelCombo,null);
this.getContentPane().add(mPanelScroll,null);
this.getContentPane().add(mPanelButton,null);
}//end of makeForm()
public void actionPerformed(ActionEvent ae)
if (ae.getSource() == mButtonInsert)
//int currentRow = table.getSelectedRow();
currentRow = ButtonCE.selectedRow;
System.out.println("Before Insert CURRENT ROW"+currentRow);
if(currentRow == -1)
int rowCount = dm.getRowCount();
//mSelectedRow = rowCount-1;
//table.clearSelection();
dm.insertRow(rowCount,new Object[]{"","","","",""});
currentRow = -1;
ButtonCE.selectedRow = -1;
else
table.clearSelection();
dm.insertRow(currentRow+1,new Object[]{"","","","",""});
currentRow = -1;
ButtonCE.selectedRow = -1;
//System.out.println("After INSERT CURRENT ROW"+currentRow);
if(ae.getSource() == mButtonDelete)
//int currentRow = table.getSelectedRow();
currentRow = ButtonCE.selectedRow;
System.out.println("Before DELETE CURRENT ROW"+currentRow);
if(currentRow != -1)
dm.removeRow(currentRow);
table.clearSelection();
currentRow = -1;
ButtonCE.selectedRow = -1;
//System.out.println("Selected Row"+mSelectedRow);
else
JOptionPane.showMessageDialog(null, "Select row first", "alert", JOptionPane.ERROR_MESSAGE);
//System.out.println("DELETE CURRENT ROW"+currentRow);
public void setUpJoinColumn(TableColumn joinColumn)
//Set up the editor for the sport cells.
JComboBox comboBox = new JComboBox();
comboBox.addItem("AND");
comboBox.addItem("OR");
comboBox.addItem("NOT");
joinColumn.setCellEditor(new DefaultCellEditor(comboBox));
//Set up tool tips for the sport cells.
DefaultTableCellRenderer renderer =
new DefaultTableCellRenderer();
renderer.setToolTipText("Click for combo box");
joinColumn.setCellRenderer(renderer);
//Set up tool tip for the sport column header.
TableCellRenderer headerRenderer = joinColumn.getHeaderRenderer();
if (headerRenderer instanceof DefaultTableCellRenderer) {
((DefaultTableCellRenderer)headerRenderer).setToolTipText(
"Click the sport to see a list of choices");
public void setUpLHSColumn(TableColumn LHSColumn)
//Set up the editor for the sport cells.
JComboBox comboBox = new JComboBox();
comboBox.addItem("Participant1");
comboBox.addItem("Participant2");
comboBox.addItem("Variable1");
LHSColumn.setCellEditor(new DefaultCellEditor(comboBox));
//Set up tool tips for the sport cells.
DefaultTableCellRenderer renderer =
new DefaultTableCellRenderer();
renderer.setToolTipText("Click for combo box");
LHSColumn.setCellRenderer(renderer);
//Set up tool tip for the sport column header.
TableCellRenderer headerRenderer = LHSColumn.getHeaderRenderer();
if (headerRenderer instanceof DefaultTableCellRenderer) {
((DefaultTableCellRenderer)headerRenderer).setToolTipText(
"Click the sport to see a list of choices");
public void setUpOperColumn(TableColumn operColumn)
//Set up the editor for the sport cells.
JComboBox comboBox = new JComboBox();
comboBox.addItem("=");
comboBox.addItem("!=");
comboBox.addItem("Contains");
operColumn.setCellEditor(new DefaultCellEditor(comboBox));
//Set up tool tips for the sport cells.
DefaultTableCellRenderer renderer =
new DefaultTableCellRenderer();
renderer.setToolTipText("Click for combo box");
operColumn.setCellRenderer(renderer);
//Set up tool tip for the sport column header.
TableCellRenderer headerRenderer = operColumn.getHeaderRenderer();
if (headerRenderer instanceof DefaultTableCellRenderer) {
((DefaultTableCellRenderer)headerRenderer).setToolTipText(
"Click the sport to see a list of choices");
public void setUpRHSColumn(TableColumn rhsColumn)
//Set up the editor for the sport cells.
JComboBox comboBox = new JComboBox();
comboBox.addItem("Variable1");
comboBox.addItem("Constant1");
comboBox.addItem("Constant2");
rhsColumn.setCellEditor(new DefaultCellEditor(comboBox));
//Set up tool tips for the sport cells.
DefaultTableCellRenderer renderer =
new DefaultTableCellRenderer();
renderer.setToolTipText("Click for combo box");
rhsColumn.setCellRenderer(renderer);
//Set up tool tip for the sport column header.
TableCellRenderer headerRenderer = rhsColumn.getHeaderRenderer();
if (headerRenderer instanceof DefaultTableCellRenderer) {
((DefaultTableCellRenderer)headerRenderer).setToolTipText(
"Click the sport to see a list of choices");
public static void main(String[] args) {
JButtonTableExample frame = new JButtonTableExample();
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
//Button as a renderer for the table cells
class ButtonCR implements TableCellRenderer
JButton btnSelect;
public ButtonCR()
btnSelect = new JButton();
btnSelect.setMargin(new Insets(0,0,0,0));
public Component getTableCellRendererComponent(JTable table,Object value,boolean isSelected,boolean hasFocus,int row,int column)
if (column != 0) return null; //meany !!!
//System.out.println("Inside renderer########################Selected row");
//btnSelect.setText(value.toString());
//btnSelect.setIcon(new ImageIcon("capsigma.gif"));
return btnSelect;
}//end fo ButtonCR
//Default Editor for table
class ButtonCE extends DefaultCellEditor implements ActionListener
JButton btnSelect;
JTable table;
//Object val;
static int selectedRow = -1;
public ButtonCE(JCheckBox whoCares)
super(whoCares);
//this.row = row;
btnSelect = new JButton();
btnSelect.setMargin(new Insets(0,0,0,0));
btnSelect.addActionListener(this);
setClickCountToStart(1);
public Component getTableCellEditorComponent(JTable table,Object value,boolean isSelected,int row,int column)
if (column != 0) return null; //meany !!!
this.selectedRow = row;
this.table = table;
table.clearSelection();
System.out.println("Inside getTableCellEditorComponent");
return btnSelect;
//public Object getCellEditorValue()
//return val;
public void actionPerformed(ActionEvent e)
// Your Code Here...
System.out.println("Inside actionPerformed");
System.out.println("Action performed Row selected "+selectedRow);
btnSelect.setIcon(new ImageIcon("capsigma.gif"));
}//end of ButtonCE

Hi,
All the thing you have to do is to return a boolean for the column. JTable will use a checkbox (as default) to show boolean values.

How can I add a row into a JTable with JButton

Hi all. I have the following code:
package gui;
import db.*;
import javax.swing.table.AbstractTableModel;
import java.util.ArrayList;
public class FoundersTable extends AbstractTableModel{
    private static final int COLUMNS = 8;
    private String columnNames[] = {"�� ", "��", "��", "��", "��", "��",
            "�� ", "�� , ��"};
    private ArrayList data;
    public FoundersTable(){
        data = new ArrayList();
    public int getRowCount() {
        return data.size();
    public int getColumnCount() {
        return columnNames.length;
    public String getColumnName(int colIndex) {
        return columnNames[colIndex];
    public Object getValueAt(int rowIndex, int columnIndex) {
        return ((ArrayList)data.get(rowIndex)).get(columnIndex);
    public void setValueAt(Object value, int rowIndex, int columnIndex) {
        ((ArrayList)data.get(rowIndex)).set(columnIndex, value);
        fireTableCellUpdated(rowIndex, columnIndex);
    public void addRow(ArrayList neueZeile) {
        data.add(neueZeile);
        int index = data.size() - 1;
        fireTableRowsInserted(index, index);
    public void removeRow(int index) {
        data.remove(index);
        fireTableRowsDeleted(index, index);
    public void removeAllRows() {
        data.clear();
        fireTableRowsDeleted(0, 0);
    public boolean isCellEditable(int rowIndex, int columnIndex) {
        return true;
}Now in my MainJFrame class I have one button for additing and one button for removing a selected row. How can I add/remove rows with this two buttons.
Thanks

No my question is how can I add and remove rows WITH buttons My point was the code is the same. You use the addRow(...) method. Why did you write an addRow(...) method if you aren't going to use it?
I don't understand your problem. Do you not know how to write an ActionListener?

How to remove a row from JTable

Hi!
I'm used to remove rows from JTables getting the model and doing a removeRow(num) like this:
((DefaultTableModel)jTable1.getModel()).removeRow(0);
But with ADF and JDeveloper the model says it's a JUTableBinding.JUTableModel but its not accessible.
How to remove a row in Jdeveloper 10.1.3.4.0?

Or maybe is just better to refresh data in the jTable but I do not know either like doing it.

Store a reference to a row from JTable

Hello everyone!
Me and my school mates are working on a project for a peer to peer application for the school. For file sending we wrote a class that extends Thread. We have a JTable to represent the downloading files. If the mentioned class for sending a file is created, I want to store into it's instance a reference to a row from the JTable. So I can always edit the cell in the tables row that represents the progress of downloading. Until now we were accessing the proper tables row over the rows index. But if we delete some rows from the table (we wand to remove finished downloads), the indexes get mixed up.
I know that .NET has a class that represents a single row in the table. I would like to store the instance of a row in my class that downloads the file in my Java project.
Thanks for further help!
Regards.

I know that .NET has a class that represents a single row in the table.
I would like to store the instance of a row in my class that downloads the file in my Java project.You need to create a custom TableModel that stores an Object containing the row information.
Here is a basic shell to get you started:
http://forum.java.sun.com/thread.jspa?forumID=57&threadID=610618
You will need to add method to add/remove rows from the model. You will then need to search the TableModel to find the Object in order to determined which row to update.

Adding/removing rows in a table

Hi,
how can I add/remove rows in a table in adobe acrobat pro? Please help.

It won’t look pretty, but you can manually redact the rows. This can either replace the removed rows with a specific color or you can make the removed spot white/no color.

Add and remove columns from JTable

Help me please!
A try to remove column from JTable. It's removed, but when I try to add column in table, then I get all old (removed early) columns + new column....
I completely confused with it.....
Here is my code for remove column:
class DelC implements ActionListener
          public void actionPerformed (ActionEvent e )
               int [] HowManyColDelete = table.getSelectedColumns();
               if (HowManyColDelete.length !=0)
                    TableColumnModel tableCModel = table.getColumnModel();
                    for (int i = HowManyColDelete.length-1; i>-1; i--)
                         table.getColumnModel().removeColumn (tableCModel.getColumn (HowManyColDelete [ i ]));
               else
                      JOptionPane.showMessageDialog(JOptionPane.getRootFrame(), "Column is not selected!");
     }

It's little ex for me, I just try understand clearly how it's work (table models i mean). Here is code. All action with tables take place through menu items.
My brain is boiled, I've try a lot of variants of code, but did't get right result :((
It's code represent problem, which I've describe above. If you'll try remove column and then add it again, it will be ma-a-a-any colunms...
I understand, that my code just hide columns, not delete from table model....
But now I have not any decision of my problem...
Thanks a lot for any help. :)
import javax.swing.*;
import java.awt.*;
import javax.swing.table.*;
import java.awt.event.*;
import javax.swing.table.DefaultTableModel;
class JTableF extends JFrame
     Object [] [] data = new Object [0] [2];
     JTable table;
     DefaultTableModel model;
     String [] columnNames = {"1", "2"};
     TableColumnModel cm;
     JTableF()
          super("Table features");
          setDefaultLookAndFeelDecorated( true );
          setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);
          JMenuBar MBar = new JMenuBar();
          JMenu [] menus = {new JMenu("A"), new JMenu("B")};
          JMenuItem [] menu1 = {new JMenuItem("Add row"), new JMenuItem("Delete row", 'D'), new JMenuItem("Add column"), new JMenuItem("Delete column")};
          menu1 [ 0 ].addActionListener(new AddL());
          menu1 [ 1 ].addActionListener(new DelL());
          menu1 [ 2 ].addActionListener(new AddC());
          menu1 [ 3 ].addActionListener(new DelC());
          for (int i=0; i<menu1.length; i++)
               menus [ 0 ].add( menu1 [ i ]);
          for (int i=0; i<menus.length; i++)
               MBar.add(menus );
          JPanel panel = new JPanel ();
          model = new DefaultTableModel( data, columnNames );
          table = new JTable (model);
          cm = table.getColumnModel();
          panel.add (new JScrollPane(table));
          JButton b = new JButton ("Add row button");
          b.addActionListener(new AddL());
          panel.add (b);
          setJMenuBar (MBar);
          getContentPane().add(panel);
          pack();
          setLocationRelativeTo (null);
          setVisible (true);
     class DelC implements ActionListener
          public void actionPerformed (ActionEvent e )
               int [] HowManyColDelete = table.getSelectedColumns();
               if (HowManyColDelete.length !=0)
                    TableColumnModel tableCModel = table.getColumnModel();
                    for (int i = HowManyColDelete.length-1; i>-1; i--)
                         int vizibleCol = table.convertColumnIndexToView(HowManyColDelete [ i ]);
                         tableCModel.removeColumn (tableCModel.getColumn (vizibleCol));
                    //cm = tableCModel;
               else
                    JOptionPane.showMessageDialog(JOptionPane.getRootFrame(), "Column is not selected!");
     class AddC implements ActionListener
          public void actionPerformed (ActionEvent e)
               //table.setColumnModel(cm);
               Object NewColumnName = new String();
               NewColumnName = JOptionPane.showInputDialog ("Input new column name", "Here");
               int i = model.getRowCount();
               int j = model.getColumnCount();
               Object [] newData = new Object [ i ];
               model.addColumn ( NewColumnName, newData);
     class AddL implements ActionListener
          public void actionPerformed (ActionEvent e)
               int i = model.getColumnCount();
               Object [] Row = new Object [ i ];
               model.addRow ( Row );
     class DelL implements ActionListener
          public void actionPerformed (ActionEvent e)
               int [] HowManyRowsDelete = table.getSelectedRows();
               if (HowManyRowsDelete.length !=0)
                    for (int k = HowManyRowsDelete.length-1; k>-1; k--)
                         model.removeRow (HowManyRowsDelete[k]);
               else
                    JOptionPane.showMessageDialog(JOptionPane.getRootFrame(), "Row is not selected!");
     public static void main (String [] args)
          javax.swing.SwingUtilities.invokeLater(new Runnable()
               public void run()
                    JTableF inst = new JTableF();

UDO: Add and Remove rows to/from Matrix.

Hi all,
Yes, I know there are lots of topics about adding and removing rows but I was having trouble with these and I need some expert's opinion.
I'm working with a Document type UDO, with 1 header table (ADAT_ONR) and 1 child table (ADAT_NR1 - MatrixUID = "mtx_NR").
I add the first row when the user chooses the business partner.
If oMatrix.RowCount = 0 Then
     oMatrix.AddRow()
      oMatrix.AutoResizeColumns()
     oMatrix.Columns.Item("V_LineId").Cells.Item(1).Specific.Value = 1
End If
Then, the user has to press the AddRow button to add new rows, and the user can only add 1 new blank row. Later I'll change the row adding behavior to mimic B1s.
            If pVal.BeforeAction = False Then
                Select Case pVal.ItemUID
                    Case "AddRow"
                        'ItemHandler_Click = AddRow(oCompany, oApplication, oForm, oForm.Items.Item("mtx_NR").Specific.RowCount())
                        oMatrix = oForm.Items.Item("mtx_NR").Specific
                        If oMatrix.RowCount > 0 Then
                            If Trim(oMatrix.Columns.Item("V_PltCode").Cells.Item(oMatrix.RowCount).Specific.Value) = "" Then
                                oApplication.StatusBar.SetText(TranslateStr(oApplication, MustChoosePallet), BoMessageTime.bmt_Short)
                                Exit Function
                            End If
                        End If
                        ItemHandler_Click = NewLine(oCompany, oApplication, oForm)
                        Exit Function
    Private Function NewLine(ByRef oCompany As SAPbobsCOM.Company, ByRef oApplication As SAPbouiCOM.Application, _
        ByRef oForm As SAPbouiCOM.Form) As Boolean
        NewLine = False
        Try
            oMatrix = oForm.Items.Item("mtx_NR").Specific
            Dim Index As Integer = oMatrix.RowCount
            With oForm.DataSources.DBDataSources.Item("@ADAT_NR1")
                .Clear()
            End With
            oMatrix.AddRow()
            oMatrix.Columns.Item("V_LineId").Cells.Item(Index + 1).Specific.Value = (Index + 1).ToString
            oMatrix.FlushToDataSource()
            oMatrix.LoadFromDataSource()
            oForm.Refresh()
            NewLine = True
        Catch ex As Exception
            oApplication.MessageBox("NewLine(): " & oCompany.GetLastErrorCode.ToString & ", " & ex.Message)
        End Try
    End Function
When I Add or Update the data, I clear the last blank row, if it exists.
           '// In the Click Event
           If pVal.BeforeAction = True Then
                Select Case pVal.ItemUID
                    Case "1"
                        If oForm.Mode <> BoFormMode.fm_FIND_MODE Then
                            oMatrix = oForm.Items.Item("mtx_NR").Specific
                            oMatrix.FlushToDataSource()
                            oMatrix.LoadFromDataSource()
                            If Trim(oMatrix.Columns.Item("V_PltCode").Cells.Item(oMatrix.RowCount).Specific.Value) = "" Then
                                oForm.DataSources.DBDataSources.Item("@ADAT_NR1").RemoveRecord(oMatrix.RowCount - 1)
                                oMatrix.DeleteRow(oMatrix.RowCount)
                                'oMatrix.FlushToDataSource()
                            End If
                        End If
                End Select
My question is, Is there an easier way to Add and Delete Rows??
BTW, I still have a problem so solve. With this code, when the user deletes a row the row numbering is incorrect. Example: if I have to rows in a matrix and I delete row nº1, row nº2 will hold the same number...
Any Ideas?
Thanks in advanced,
Vítor Vieira

Hi Victor,
there is a Form Data event which you ca use in that try to write the code for adding a row after updating and delete a row while inserting and add a row while traversing.
sample code.
Sub FormDataEvent(ByRef BusinessObjectInfo As SAPbouiCOM.BusinessObjectInfo, ByRef BubbleEvent As Boolean)
        Try
            Select Case BusinessObjectInfo.EventType
                Case SAPbouiCOM.BoEventTypes.et_FORM_DATA_ADD, SAPbouiCOM.BoEventTypes.et_FORM_DATA_UPDATE
                    If BusinessObjectInfo.BeforeAction = True Then
                        objForm = objMain.objApplication.Forms.Item(BusinessObjectInfo.FormUID)
                        oDBs_Head = objForm.DataSources.DBDataSources.Item("@Header")
                        oDBs_Detail= objForm.DataSources.DBDataSources.Item("@Line")
                        objMatrix = objForm.Items.Item("83").Specific
                        If objMatrix.VisualRowCount <> 0 Then
                            objMatrix.DeleteRow(objMatrix.VisualRowCount)
                            objMatrix.FlushToDataSource()
                        End If
                        If BusinessObjectInfo.EventType = SAPbouiCOM.BoEventTypes.et_FORM_DATA_ADD Then
                            End If
                    ElseIf BusinessObjectInfo.ActionSuccess = True Then
                        objForm = objMain.objApplication.Forms.Item(BusinessObjectInfo.FormUID)
                        If BusinessObjectInfo.EventType =                    SAPbouiCOM.BoEventTypes.et_FORM_DATA_UPDATE Then
                            objMatrix = objForm.Items.Item("83").Specific
                            objMatrix.AddRow()
                            SetNewLineCharge(objForm.UniqueID, objMatrix.VisualRowCount)
                            objMatrix.FlushToDataSource()
                          End If
                    End If
                Case SAPbouiCOM.BoEventTypes.et_FORM_DATA_LOAD
                    If BusinessObjectInfo.ActionSuccess = True Then
                        oDBs_Head = objForm.DataSources.DBDataSources.Item("@Header")
                       oDBs_Detail = objForm.DataSources.DBDataSources.Item("@Line")
                        objMatrix = objForm.Items.Item("83").Specific
                        objMatrix.AddRow()
                        SetNewLineCharge(objForm.UniqueID, objMatrix.VisualRowCount)
                        objMatrix.FlushToDataSource()
                       End If
            End Select
            End Sub
Hope this helps,
OM Prakash

Add and Remove rows

Hi,
I have 2 tables, and I needed to add/remove some rows from the first table to the second.
I've followed the tutorial: Link: [Add and Remove from a List|http://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/927d8c3c-0a01-0010-57b4-e89f505e2bff] and it works great!
But the user can add two or more times the same row, so I need to avoid that. The user should be able to add every row only once!!
I thought about some condition on button Add (for example, disable the ADD button if the same row is present in both tables, but it didnt work).
Any ideas to achieve that?
Thanks in advance!
Best Regards
Marcelo.

Hi again Ahmed
I've solved my problem, but now I'm facing a new issue about the same topic.
Following your tips, I've found a solution, but now, I need to copy a complete field of a table to the data store.
For example, my table has 4 field (country, key, name and city), and I need to copy ALL the key values to the data store. So, if I have 4 rows in the table, let's say "key1", "key2", "key3", "key4"
I've reached a solution, but it involves to walk throught the entire table, selecting every row automatically (I use a spinner) and "copying" every key field of every row to the data store. When I say "copying" I mean adding it to the same virtual field of the data store, that is to say, concatenating the key values one after another.
The problem arises when the table has more than 100 records, because 100 is the top value that a spinner can reach.
Any ideas about can bypass that limit?
Thanks in advance, your help is really appreciated.
Best regards
Marcelo

Add/remove rows in jTable

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