As the title states, I need to use NCalc in Visual Studio 2010. I am writing a program that will calculate a multi-step math problem in VB, but I'm not quite sure how I'd use NCalc. The user inputs a math problem into a text box, then clicks a button which will tell the program to calculate the answer. I've already added NCalc as a reference, and imported it into the project, I'm just not sure what to do next.
You'd need to add, at the top of your file:
using NCalc.Domain;
You could then write something in a button press like:
Expression exp = new Expression(textBox1.Text); // Get the text box text
try
{
object result = exp.Evaluate();
textBox2.Text = result.ToString(); // Place the "answer"
}
catch(EvaluationException e)
{
// This happens if the user enters a "bad" expression
textBox2.Text = "Unable to compute: " + e.Message;
}
For details, see the examples on NCalc's homepage.
Related
Problem: I routinely receive PDF reports and annotate (highlight etc.) some of them. I had the bad habit of saving the annotated PDFs together with the non-annotated PDFs. I now have hundreds of PDF files in the same folder, some annotated and some not. Is there a way to check every PDF file for annotations and copy only the annotated ones to a new folder?
Thanks a lot!
I'm on Win 7 64bit, I have Adobe Acrobat XI installed and I'm able to do some beginner coding in Python and Javascript
Please ignore the following suggestion, since the answers already solved the problem.
EDIT: Following Mr. Wyss' suggestion, I created the following code for Acrobat's Javascript console to be run only once at the beginning:
counter = 1;
// Open a new report
var rep = new Report();
rep.size = 1.2;
rep.color = color.blue;
rep.writeText("Files WITH Annotations");
Then this code should be applied to all PDFs:
this.syncAnnotScan();
annots = this.getAnnots();
path = this.path;
if (annots) {
rep.color = color.black;
rep.writeText(" ");
rep.writeText(counter.toString()+"- "+path);
rep.writeText(" ");
if (counter% 20 == 0) {
rep.breakPage();
}
counter++;
}
And, at last, one code to be run only once at the end:
//Now open the report
var docRep = rep.open("files_with_annots.pdf");
There are two problems with this solution:
1. The "Action Wizard" seems to always apply the same code afresh to each PDF (that means that the "counter" variable, for instance, is meaningless; it will always be = 1. But more importantly, var "rep" will be unassigned when the middle code is run on different PDFs).
2. How can I make the codes that should be run only once run only at the beginning or at the end, instead of running everytime for every single PDF (like it does by default)?
Thank you very much again for your help!
This would be possible using the Action Wizard to put together an action.
The function to determine whether there are annotations in the document would be done in Acrobat JavaScript. Roughly, the core function would look like this:
this.syncAnnotScan() ; // updates all annots
var myAnnots = this.getAnnots() ;
if (myAnnots != null) {
// do something if there are annots
} else {
// do something if there are no annots
}
And that should get you there.
I am not completely positive, but I think there is also a Preflight check which tells you whether there are annotations in the document. If so, you would create a Preflight droplet, which would sort out the annotated and not annotated documents.
Mr. Wyss is right, here's a step-by-step guide:
In Acrobat XI Pro, go to the 'Tools' panel on the right side
Click on the 'Action Wizard' tab (you must first make it visible, though)
Click on 'Create New Action...', choose 'More tools' > 'Execute Javascript' and add it to right-hand pane > click on 'Execute Javascript' > 'Specify Settings' (uncheck 'prompt user' if you want) > paste this code:
.
this.syncAnnotScan();
var annots = this.getAnnots();
var fname = this.documentFileName;
fname = fname.replace(",", ";");
var errormsg = "";
if (annots) {
try {
this.saveAs({
cPath: "/c/folder/"+fname,
bPromptToOverwrite: false //make this 'true' if you want to be prompted on overwrites
});
} catch(e) {
for (var i in e)
{errormsg+= (i + ": " + e[i]+ " / ");}
app.alert({
cMsg: "Error! Unable to save the file under this name ('"+fname+"'- possibly an unicode string?) See this: "+errormsg,
cTitle: "Damn you Acrobat"
});
}
;}
annots = 0;
Save and run it! All your annotated PDFs will be saved to 'c:\folder' (but only if this folder already exists!)
Be sure to enable first Javascript in 'Edit' > 'Preferences...' > 'Javascript' > 'Enable Acrobat Javascript'.
VERY IMPORTANT: Acrobat's JS has a bug that doesn't allow Docs to be saved with commas (",") in their names (e.g., "Meeting with suppliers, May 11th.pdf" - this will get an error). Therefore, I substitute in the code above all "," for ";".
I have been trying to get the back button to work for windows phone using vb, however I cant find anything on the internet, anything I do find is for c#
Can someone please tell me how I can make the back button go to the previous page as every time the back button is pressed it quits out of the app.
thanks
I'm not good at VB so, I'll make it in C# and consider to do it in your way in VB
In the Constructor of a page, write this code :
Windows.Phone.UI.Input.HardwareButtons.BackPressed += HardwareButtons_BackPressed;
In the Page's class, write this :
void HardwareButtons_BackPressed(object sender, Windows.Phone.UI.Input.BackPressedEventArgs e)
{
if (this.Frame.CanGoBack)
{
this.Frame.GoBack();
}
else
{
Application.Current.Exit();
}
}
Consider to write it in all pages.
So I've coded a VSTO addin using vb.net to add a header to a document in Word however from historical methods we have lots of templates with field codes. My addin does not account for these and simply strips the header to add xxxxx value you choose from the pop up.
I need my code to be smart enough to 'spot' the field code and append or if it does not exist e.g. a blank document then continue running as expected. I can append this field code using the below code:
wordDocument.Variables("fieldname").Value = "xxxx"
wordDocument.Fields.Update
However my tool then adds the header as normal and strips most the content from the template. So effectively my question is how would I code a check for this before proceeding. So in plain English I would need my addin to go from this:
Load pop up
Set xxxx value in header
Close
To this:
Load pop up
Check Document for existing "fieldname"
If "fieldname" exists then
wordDocument.Variables("fieldname").Value = "xxxx" (from pop up selection)
wordDocument.Fields.Update
However if "fieldname" doesn't exist then continue as normal....
Sorry if this is a little complex and/or long winded.
Thanks in advance.
Here is my code in C#, hope this might help you to code in VB.Net
foreach (Section sec in doc.Sections)
{
doc.ActiveWindow.View.set_SeekView(WdSeekView.wdSeekCurrentPageHeader);
foreach (HeaderFooter headerFooter in sec.GetHeadersFooters())
{
doc.ActiveWindow.View.set_SeekView(headerFooter.IsHeader ? WdSeekView.wdSeekCurrentPageHeader : WdSeekView.wdSeekCurrentPageFooter);
if (headerFooter.Range.Fields.Count > 0)
{
//Append to existing fields
UpdateFields(headerFooter.Range.Fields);
}
else
{
//Add field code
AddFieldCode(headerFooter.Range);
}
}
doc.ActiveWindow.View.set_SeekView(WdSeekView.wdSeekMainDocument);
}
Extension method to iterate through the header types
public static IEnumerable<HeaderFooter> GetHeadersFooters(this Section section)
{
List<HeaderFooter> headerFooterlist = new List<HeaderFooter>
{
section.Headers[WdHeaderFooterIndex.wdHeaderFooterPrimary],
section.Headers[WdHeaderFooterIndex.wdHeaderFooterFirstPage],
section.Headers[WdHeaderFooterIndex.wdHeaderFooterEvenPages],
section.Footers[WdHeaderFooterIndex.wdHeaderFooterPrimary],
section.Footers[WdHeaderFooterIndex.wdHeaderFooterFirstPage],
section.Footers[WdHeaderFooterIndex.wdHeaderFooterEvenPages]
};
return headerFooterlist;
}
How can I make a drop down box for someone to select one of their contacts from? I am using Visual Studio Express 2012 for Windows Phone.
Thanks.
This is built in functionality. Use the PhoneNumberChooserTask
//When you see the red underline hold (control + period)
// OR you can just add the using yourself at the top of the page
//using Microsoft.Phone.Tasks;
PhoneNumberChooserTask pnct= new PhoneNumberChooserTask();
pnct.Completed += new EventHandler<PhoneNumberResult>(pnct_Completed);
Once you have it initialized you can do a show
pnct.Show();
Then in the completed event just extract what you need.
void pnct_Completed(object sender, PhoneNumberResult e)
{
if (e.TaskResult == TaskResult.OK)
{
MessageBox.Show("The phone number for " + e.DisplayName + " is " + e.PhoneNumber);
//Code to start a new call using the retrieved phone number.
//PhoneCallTask phoneCallTask = new PhoneCallTask();
//phoneCallTask.DisplayName = e.DisplayName;
//phoneCallTask.PhoneNumber = e.PhoneNumber;
//phoneCallTask.Show();
}
}
This is the suggested way of doing what you are asking because it keeps the environment consistent for the user. A consistent user environment means they will be happier with your app.
The reference for this answer can be found on this MSDN article
I'm trying to use two devExpress checkedComboBoxes (boxes) to maintain a list and its antilist (i.e, same items in both comboboxes, and they must be checked in only one of the lists).
I'm using C++/CLI, so for each box I handle
EditValueChanged += gcnew System::EventHandler(this, &SelectionControl::exclBox_EditValueChanged);
which calls through to
void
box_ToggleAntibox(
DevExpress::XtraEditors::CheckedComboBoxEdit^ box,
DevExpress::XtraEditors::CheckedComboBoxEdit^ antibox )
{
using namespace DevExpress::XtraEditors::Controls ;
cli::array<String ^> ^ sAnti = gcnew cli::array<String ^>(2*box->Properties->Items->Count) ;
int ii = 0;
String ^ delim = ", ";
for each (CheckedListBoxItem^ i in box->Properties->GetItems()) {
if (i->CheckState==Windows::Forms::CheckState::Unchecked)
{
sAnti[ii] = i->Value->ToString();
++ii;
sAnti[ii] = delim;
++ii;
}
}
String ^ result = String::Concat(sAnti);
antibox->EditValue = result;
}
As the devExpress documentation seems to say to set the edit value, rather than simply iterating through the box list and setting the anti-list to !Checked.
However, it doesn't seem to be working (the correct items are added to the text window, but nothing is checked). Moreover, if I look at my box after the event has finished, I find that the string value in the text window is correct (reflects what I'd selected), but if I open it up, then all items are selected.
Does anyone have any suggestions I might try?
Is it better to set each item's CheckState::Checked instead?
Thanks!
I spent some time talking to DevExpress support. The short answer is that this should work - but doesn't for us. Your mileage may vary, but our solution was to put the two comboboxes on to separate controls on the form.