How to avoid pop-up dialog? "Read From Spreadsheet File.vi"

I am using LV2010 and VBAI2011.
I am using LV to write vi for my VBAI user interface. VBAI will send the inspection results to vi by "Update Inspection UI".
I am calling a "Run LabVIEW VI" from within the VBAI. This vi contains a sub-vi "Read From Spreadsheet File.vi"; the "file path" input to this sub-vi is a string control, which will be updated by a string value obtained in previous steps.
What happen is, when I run the Inspection, a windows "Choose File to Read" will pop up, even though I have already update the "file path" in VBAI. I guess this happens because the "Read From Spreadsheet File.vi" sub-vi didn't wait for the "file path" input, or rather the "file path" update was "too slow"
How to prevent this from happening?
Solved!
Go to Solution.
Attachments:
PQT_CurveFitting_Lookupxxx.vi ‏15 KB

I didn't use your code but tried the attached simple VIs and they work well. Can you create a simple VBAI interface that just runs these two VIs and see if you are able to replicate the issue? The VIs are LabVIEW 2010 SP1
Attached is my VBAI inteface as well, which is 2011 SP1.
Adnan Zafar
Certified LabVIEW Architect
Coleman Technologies
Attachments:
Run1st.vi ‏10 KB
Run2nd.vi ‏11 KB
Test1.vbai ‏3 KB

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.addComponent(jbtSave))))
.addContainerGap())
layout.linkSize(javax.swing.SwingConstants.HORIZONTAL, new java.awt.Component[] {jbtFirst, jbtLast, jbtNext, jbtPrevious});
layout.linkSize(javax.swing.SwingConstants.HORIZONTAL, new java.awt.Component[] {jbtAdd, jbtDelete, jbtModify, jbtSave});
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(21, 21, 21)
.addComponent(jbtAdd)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jbtDelete)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jbtModify)
.addGap(39, 39, 39)
.addComponent(jbtSave))
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jbtFirst)
.addComponent(jbtNext)
.addComponent(jbtPrevious)
.addComponent(jbtLast))
.addGap(15, 15, 15)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(jPanel2, javax.swing.GroupLayout.PREFERRED_SIZE, 80, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGroup(layout.createSequentialGroup()
.addComponent(jbtExit)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jbtExitwoSave)))
.addContainerGap())
pack();
}// </editor-fold>
private void jbtExitwoSaveActionPerformed(java.awt.event.ActionEvent evt) {
System.exit(0);
private void jbtSaveActionPerformed(java.awt.event.ActionEvent evt) {
String prodNameMod, colorMod;
double unitsInStockMod, unitPriceMod;
int idNumMod;
idNumMod = Integer.parseInt(IDNumberField.getText());
prodNameMod = prodNameField.getText();
unitsInStockMod = Double.parseDouble(unitsInStockField.getText());
unitPriceMod = Double.parseDouble(unitPriceField.getText());
colorMod = colorField.getText();
if(currentProductIndex == inventory.length) {
inList.add(new InventoryPlusColor(idNumMod, prodNameMod,
unitsInStockMod, unitPriceMod, colorMod));
InventoryPlusColor[] inventory = (InventoryPlusColor[]) inList.toArray
(new InventoryPlusColor[inList.size()]);
} else {
inventory[currentProductIndex].setIDNumber(idNumMod);
inventory[currentProductIndex].setProdName(prodNameMod);
inventory[currentProductIndex].setUnitsInStock(unitsInStockMod);
inventory[currentProductIndex].setUnitPrice(unitPriceMod);
inventory[currentProductIndex].setColor(colorMod);
displayProduct(inventory[currentProductIndex]);
private static void writeInventory(InventoryPlusColor i,
DataOutputStream out) {
try {
out.writeInt(i.getIDNumber());
out.writeUTF(i.getProdName());
out.writeDouble(i.getUnitsInStock());
out.writeDouble(i.getUnitPrice());
out.writeUTF(i.getColor());
} catch (IOException e) {
JOptionPane.showMessageDialog(null, "I/O Exception writing data",
"", JOptionPane.ERROR_MESSAGE);
System.exit(0);
} //end writeInventory()
private static DataOutputStream openOutputStream(String name) {
DataOutputStream out = null;
try {
File file = new File(name);
out =
new DataOutputStream(
new BufferedOutputStream(
new FileOutputStream(file)));
} catch (IOException e) {
JOptionPane.showMessageDialog(null, "I/O Error", "", JOptionPane.ERROR_MESSAGE);
System.exit(0);
return out;
} // end openOutputStream()
private static void closeFile(DataOutputStream out) {
try {
out.close();
} catch (IOException e) {
JOptionPane.showMessageDialog(null, "I/O Exception closing file",
"", JOptionPane.ERROR_MESSAGE);
System.exit(0);
} // end closeFile()
private static DataInputStream getStream(String name) {
DataInputStream in = null;
try {
File file = new File(name);
in = new DataInputStream(
new BufferedInputStream(
new FileInputStream(file)));
} catch (FileNotFoundException e) {
JOptionPane.showMessageDialog(null, "The file doesn't exist",
"", JOptionPane.ERROR_MESSAGE);
System.exit(0);
} catch (IOException e) {
JOptionPane.showMessageDialog(null, "I/O Error creating file",
"", JOptionPane.ERROR_MESSAGE);
System.exit(0);
return in;
private static void closeInputFile(DataInputStream in) {
try {
in.close();
} catch (IOException e) {
JOptionPane.showMessageDialog(null, "I/O Exception closing file",
"", JOptionPane.ERROR_MESSAGE);
System.exit(0);
} // end closeInputFile()
private double entireInventory() {
// a temporary double variable that the method will return ...
// after each product's inventory is added to it
double entireInventory = 0;
// loop to control number of products
for (int index = 0; index < inventory.length; index++) {
// add each inventory to the entire inventory
entireInventory += inventory[index].setInventoryValue();
} // end loop to control number of products
return entireInventory;
} // end method entireInventory
private void jbtLastActionPerformed(java.awt.event.ActionEvent evt) {
currentProductIndex = inventory.length-1; // move to the last product
// display the information for the last product
displayProduct(inventory[currentProductIndex]);
private void jbtPreviousActionPerformed(java.awt.event.ActionEvent evt) {
if (currentProductIndex != 0) // it's not the first product displayed
currentProductIndex -- ; // move to the previous product (decrement the current index)
} else // the first product is displayed
currentProductIndex = inventory.length-1; // move to the last product
// after the current product index is set, display the information for that product
displayProduct(inventory[currentProductIndex]);
private void jbtNextActionPerformed(java.awt.event.ActionEvent evt) {
if (currentProductIndex != inventory.length-1) // it's not the last product displayed
currentProductIndex ++ ; // move to the next product (increment the current index)
} else // the last product is displayed
currentProductIndex = 0; // move to the first product
// after the current product index is set, display the information for that product
displayProduct(inventory[currentProductIndex]);
private void jbtFirstActionPerformed(java.awt.event.ActionEvent evt) {
currentProductIndex = 0;
// display the information for the first product
displayProduct(inventory[currentProductIndex]);
private void colorFieldActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
private void jbtModifyActionPerformed(java.awt.event.ActionEvent evt) {
prodNameField.setEditable(true);
prodNameField.setFocusable(true);
unitsInStockField.setEditable(true);
unitPriceField.setEditable(true);
private void jbtAddActionPerformed(java.awt.event.ActionEvent evt) {
IDNumberField.setText("");
IDNumberField.setEditable(true);
prodNameField.setText("");
prodNameField.setEditable(true);
colorField.setText("");
colorField.setEditable(true);
unitsInStockField.setText("");
unitsInStockField.setEditable(true);
unitPriceField.setText("");
unitPriceField.setEditable(true);
restockingFeeField.setText("");
invenValueField.setText("");
currentProductIndex = inventory.length;
private void jbtExitActionPerformed(java.awt.event.ActionEvent evt) {
DataOutputStream out = openOutputStream("inventory.dat");
for (InventoryPlusColor i : inventory)
writeInventory(i, out);
closeFile(out);
System.exit(0);
private static InventoryPlusColor readProduct(DataInputStream in) {
int idNum = 0;
String prodName = "";
double inStock = 0.0;
double pric

BalusC -- The line that gives me my NullPointerException is when I call the "DisplayProduct()" method. Its a dumb question, but with NetBeans how do I find out which reference could be null? I'm not very familiar with how NetBeans works with finding out how to debug. Any help you can give me would be greatly appreciated.The IDE is com-plete-ly irrelevant. It's all about the source code.
Do you understand anyway when and why a NullPointerException is been thrown? It is a subclass of RuntimeException and those kind of exceptions are very trival and generally indicate an design/logic/thinking fault in your code.
SomeObject someObject = null; // The someObject reference is null.
someObject.doSomething(); // Invoking a reference which is null would throw NPE.

Reading from a text file into a 2D array

How do you read from a text file and put it into a 2D array? Or if someone could guide me to where I can find the information?

This tutorial shows how to read a file:
http://java.sun.com/docs/books/tutorial/essential/io/scanfor.html
This tutorial shows how to create arrays with multiple dimensions:
http://java.sun.com/docs/books/tutorial/java/nutsandbolts/arrays.html

Read from a config file in File Adapter in SOA Suite 11g

I want to read from a config file in order to determine whether to archive or delete the file after processing using file adapter in SOA Suite 11g. How do i do that.

only part i replied on was the part of how to read a file
but i think in your case you could do the next
use the sync file adapter to read in the file during your process
based on this content you set a variable "myOutputDirectory"
then create a file adapter (write) which will store the file on file system
http://docs.oracle.com/cd/E23943_01/integration.1111/e10231/adptr_file.htm#CIACICFD
4.3.2.2.5 Specifying a Dynamic Outbound File Name
and use that (jca.file.Directory) property to store the file either on the archive location or the delete location

Help! Want to read from a xl file and get an output voltage value!!!

Hello..
I`m a beginner, so please help..
My program should output an voltage value that is read from an xl-file with one collum. The most important is that each values in the xl graph should be read per iteration. So that the file is read over time. I want to use this xl file to controll the output signal over time.
Can anyone show me how this VI would look like, and what would the xl file look like??

The easiest way to do this is to save your Excel file as a comma or tab separated text file and not the native Excel format. Then you can use Read From Spreadsheet File (on the File I/O palette). Using this, you can read the file all at once and then just have a 1D array that you can wire to a while or for loop so that with each iteration of the loop, you get one element in the array. A for loop automatically indexes an input array. Reading the file all at once will be more effecient that reading the file line by line.

Reading from an excel file

I was wondering, what do i need to look at to get cracking with making a programme that can read from a excel file
I was thinking of making a programme that uses a excel spreadsheet <this spreadsheet is made and provided by the national lottery and has all the winning combinations that have been drawn in past draws> and reading them in and generating a list of combinations that have not occured yet
Its just for a bit of fun, but could be a good challenege
thanks

PaulOckleford wrote:
If all you want to do is select from the excel sheet you may find it easier to use the jdbc option, I have an example of some code I wrote that does a select from an excel sheet and it may be useful for you:Just my opinion here but I would avoid using odbc to deal with the spreadsheet if at all possible.
Time for a war story:
After losing an argument with some business, marketng and management I had to develop a program that accepted spreadsheets as datafiles and it was nothing but trouble.
I experienced all kinds of type problems, the most common and annoying of them being
that the driver (via some logic unknown to me) will determine the type of each column.
Any data that is does not match that expectation is dropped (I found that the query returned NULL).
As far as I could tell there was no way to make the driver treat the data the way you want it too.
After much trouble and lots of manual intervention by the poor person who has to deal with this data on a regular basis it seems to be working but it was not fun it is still very ugly code.
You may not end up reliving my tale of woe, but I though I would give you some fair warning.
As I continue to say "Spreadsheets are not a reasonable data transfer format."

How do i remove the exif metadata from my jpg file produced with a digital camera photo?

How do i remove the exif metadata from my jpg file produced with a digital camera photo?

The excellent and free utility Irfanview has the option to remove the EXIF data.
Simply open and the file and do a Save, or Save As with the original name.
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