C# Discussion Boards - CodeProject

[REPOST] Catch JavaScript errors

11-Mar-19 1:49

Wrong forum - this is for C#, as it says at the top of the page...

Try here: JavaScript Discussion Boards[^]

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Richard Deeming11-Mar-19 9:22

Richard Deeming

11-Mar-19 9:22

You have already posted this in the ASP.NET forum:
Capture and report JavaScript errors - ASP.NET Discussion Boards[^]

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SizeF and InvariantCulture

Bernhard Hiller11-Mar-19 0:38

Bernhard Hiller

11-Mar-19 0:38

What results do you think following code produces:

SizeF size = new SizeF(100.12f, 50.34f);
string result1 = Convert.ToString(size, CultureInfo.InvariantCulture);
string result2 = Convert.ToString(size, CultureInfo.GetCultureInfo("en-US"));
string result3 = size.ToString();
string result4 = FormattableString.Invariant($"{size}");

{Width=100.12, Height=50.34}, of course!?

But, alas, the result is always:
{Width=100,12, Height=50,34} with a decimal comma instead of a decimal point.

As a side note: "{" + string.Format(CultureInfo.InvariantCulture, "Width={0},Height={1}", size.Width, size.Height) + "}" returns the expected result.

That happens on my Windows 7 machine with a German OS.

Now I am a little confused...

I know that there's a SizeFConverter, but that would make things too complicated. I have a function which receives an object, converts that to a string and transfers the string to a different machine where the value should be parsed to a SizeF again.

(This post could also fit into the "Weird and Wonderful" category...

Oh sanctissimi Wilhelmus, Theodorus, et Fredericus!

OriginalGriff11-Mar-19 1:59

11-Mar-19 1:59

Convert.ToString doesn't have a specific overload that takes a SizeF, so it goes to the default Object version.
SizeF does not support IConvertable or IFormattable, so Convert.ToString doesn't really know what to do with it!
So it ends up just calling value.ToString which uses the default formatting for the machine and ignores the format you provided.

See the reference source and you'll see what I mean: Reference Source[^]

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modified 11-Mar-19 8:29am.

Bernhard Hiller11-Mar-19 4:19

Bernhard Hiller

11-Mar-19 4:19

Thanks - so this is a good fit for the Weird and Wonderful!

Oh sanctissimi Wilhelmus, Theodorus, et Fredericus!

OriginalGriff11-Mar-19 4:56

11-Mar-19 4:56

You're welcome!

Sent from my Amstrad PC 1640
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Using different versions of Visual Studio

BillWoodruff11-Mar-19 22:04

BillWoodruff

11-Mar-19 22:04

Useful ? ^]

if the problem is transmitting the float value independently of local culture settings, serialization to binary, xml,json >?

cheers, Bill

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Brian_TheLion9-Mar-19 19:37

Brian_TheLion

9-Mar-19 19:37

At the moment I have Visual Studio 2012 and Visual Studio 2015 installed on my computer.
I wanted to know if there is any reason I should keep these older versions on my computer as I want to install Visual Studio 2017; I have a limited amount of space on the C drive.
Am I likely to loose the code I have written? Is older code backward compatible?

Is it possible to install Visual Studio on a different hard drive with more space as my C drive is a
SSD drive with less space than my other hard drives.

Brian

OriginalGriff9-Mar-19 19:57

9-Mar-19 19:57

I have 2013, 2015, and 2017 on mine, and every project written in an earlier version has opened OK in later ones - so in theory you should be OK.
But ... two things:
1) VS2017 is a little flaky, especially compared to VS2013 - I've had it crash out and had to reinstall to fix the problems a couple of times. This is why I'm still doing the bulk of my work on 2013 - it wastes far, far too much time fixing the IDE! Not everybody is getting these problems however, so you may be lucky.
2) I'd strongly recommend that VS is installed on your SSD, not a HDD - the performance improvement is considerable (particularly with 2017, where the boot speed alone is significantly slower than 2013)

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Brian_TheLion9-Mar-19 23:25

Brian_TheLion

9-Mar-19 23:25

Thanks for the advice Griff.
I've heard of this happening to some updated program.

Out of interest what operating system do you use?

Brian

OriginalGriff9-Mar-19 23:30

9-Mar-19 23:30

Win10 V1803 Build 17134.590

The latest problem was that it would lock up when you tried to open any .CS file, A "repair install" (which is a reinstall under a new name) solved the problem, but threw away all my settings, templates, ...

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Brian_TheLion9-Mar-19 23:50

Brian_TheLion

9-Mar-19 23:50

I just wondered as it might be related to Windows 10. I use Windows 8.1
Still not good when it makes you feel frustrated and causes you more work.

If there is not many extra features or improvements then perhaps it's better to stay with the 2015 version like you say. I wonder if there are updates for Visual Studio 2017?

Brian

OriginalGriff9-Mar-19 23:51

Reference type copy change in foreach

9-Mar-19 23:51

Yes - but my version is up to date!
Microsoft is not fond of fixing bugs ... Laugh | :laugh:

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Member 130741338-Mar-19 12:30

Member 13074133

8-Mar-19 12:30

Hi,

I want to get a copy of the line in foreach brackets. But since the copyline is the reference type, the line is also changing.

foreach ( var line in Lines)
{
var copyline= new LineTable();
copyline = line;
copyline.Id = 0;
copyline.InvoiceHeaderId = newHeaderId;
var lineResponse = _service.InsertLine(copyline);
if (lineResponse.Success)
{
line.UpdatedTime = DateTime.Now();
}

Already below that lines return value is true

System.Object.ReferenceEquals(line, copyline) return value of this code

Thanks for your answers

Re: Reference type copy change in foreach

Dave Kreskowiak8-Mar-19 13:35

Dave Kreskowiak

8-Mar-19 13:35

I have no idea what you're trying to.

But, there a problems with the code in general. First, you never make a copy of the object line is pointing to.

Next, you create a new variable, copyline, and point it a new instance of LineTable. On the very next line of code you throw that instance out. ???

foreach (var line in Lines)
{
    var copyline = new LineTable();
    copyline = line;

On the same line, you point copyline to the same object line is pointing to. This does NOT make a copy of an object!

copyline = line;

Then you start manipulating the properties of the object pointed to by copyline. Well, both line and copyline are pointing at the exact same object so the changes you make with one variable will show up in the other.

So, yeah, ReferenceEquals is going to return true.

If you're trying to make a copy of line, you're going to have to define exactly what you want to copy. A "shallow copy" can easily be done using MemberwiseClone(). A "deep copy" is quite a bit more complex, and can be done many different ways depending on what members of line you're copying and how.

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Ionic.Zip Date Problems.

ormonds7-Mar-19 17:30

ormonds

7-Mar-19 17:30

I have code which unzips a file over others, but first checks the date of a special file to make sure it is newer. The ModifiedTime of the file is found using:

using (ZipFile zip = ZipFile.Read(OriginalFileName))
try
  {
  ZipEntry z = zip["save_history.log"];
  NewFileAge = z.ModifiedTime;
  }
catch......

WinZip shows the date of the file as 26/02/2019 3:56 PM. Extraction confirms this.
The value of NewFileAge in the code above is 26/02/2019 2:56 PM.

The only references I can find to this refer to remote servers in different time zones. All these files are on one computer.
Yes, it looks suspiciously like a daylight saving time issue, but I can't figure out how.

Re: Ionic.Zip Date Problems.

Dave Kreskowiak8-Mar-19 3:58

Dave Kreskowiak

8-Mar-19 3:58

Which ZIP library are you using? The one in the .NET Framework doesn't have a .Read method.

Consult the documentation on that library. I'd be willing to bet the date/time you got back for the zip file entry is in UTC and you're comparing it to a local date/time.

Asking questions is a skill
CodeProject Forum Guidelines
Google: C# How to debug code
Seriously, go read these articles.

Dave Kreskowiak

Re: Ionic.Zip Date Problems.

ormonds10-Mar-19 11:31

ormonds

10-Mar-19 11:31

I'm using Ionic.Zip. You are right, I've converted to local time and that sorts it.

Thanks.

wpf proble with DataGridTextColumn.HeaderTemplate

Member 45620987-Mar-19 6:03

Member 4562098

7-Mar-19 6:03

I recently started programming with the wpf

<DataGridTextColumn.HeaderTemplate>
  <DataTemplate >
    <StackPanel Orientation="Horizontal">
        <ComboBox Name="ddlTipo"  TextBoxBase.TextChanged="DdlTipo_TextChanged"  
in Mainwindow.cs : 'ddlTipo' does not exist in the current context
how can I do ?
thanks

Re: wpf proble with DataGridTextColumn.HeaderTemplate

OriginalGriff7-Mar-19 6:40