Re: Adding a variable to a variable name - C# Discussion Boards

BobJanova14-Jun-12 2:04

14-Jun-12 2:04

I guess you are a C++ programmer (your user name further reinforces that impression). In C#, you cannot override assignment; a = b for a reference type will always assign a to exactly the same reference as b, and it's not possible to change this behaviour. (I think this is good because it means you know what a line is doing, whereas hiding copying in = requires you to know things about the class you're using.)

If you want to create copies of an object, you should implement ICloneable (but read this[^]), a copy method (e.g. public ComplexNumber Copy() { ... }) and/or provide a copy constructor (i.e. a constructor that takes a ComplexNumber).

Re: How to override the = operator?

atoi_powered14-Jun-12 9:40

atoi_powered

14-Jun-12 9:40

You're completely right. I should try that instead. And by the way, I know there is a function in C++ called atoi but It has another meaning to me. It actually represents my slogan in a short form which is the same with that function's name! Big Grin | :-D

Thanks for your help Smile | :)

Re: How to override the = operator?

Luc Pattyn14-Jun-12 5:41

Luc Pattyn

14-Jun-12 5:41

atoi_powered wrote:
I made a class for Complex Numbers

IMO you got a wrong starting point, special number systems (such as complex) is something I would implement as a value type (i.e. a struct), not a class. That would make your "instances" immutable, and it would remove the problem of assignment.

Smile | :)

Luc Pattyn [My Articles] Nil Volentibus Arduum

Re: How to override the = operator?

atoi_powered14-Jun-12 9:32

atoi_powered

14-Jun-12 9:32

That's right! Thanks Smile | :)

Re: How to override the = operator?

Luc Pattyn14-Jun-12 12:25

Luc Pattyn

14-Jun-12 12:25

you're welcome.

Smile | :)

Luc Pattyn [My Articles] Nil Volentibus Arduum

Adding a variable to a variable name

MichCl13-Jun-12 8:35

MichCl

13-Jun-12 8:35

Is there a way to add a variable to a variable name reference? I'm trying to cut out a rats nest of if statements. When I searched, I found this but it didn't look like what I want: http://www.windows-tech.info/1/ae8c74ec5a29a601.php[^]

This is a code snippet to get an idea of what I'm talking about:

//count Good or NG program result per shift
foreach (Shift shift in shiftArr)
{
    //iterate through array of Shift Structs
    if (shift.shift == currentShift)
    {
        if (programResult == 0) //0 == No Good (NG)
        {
            shift.NG_Count++;
            tb_Shift_$(currentShift)_Count_NG = Convert.ToString(shift.NG_Count); //this doesn't work but maybe there's a way
        }
        else
        {
            shift.good_Count++;
            tb_Shift_$(currentShift)_Count_G = Convert.ToString(shift.G_Count); //issue too

        }
    }
}

Re: Adding a variable to a variable name

Pete O'Hanlon13-Jun-12 8:41

Pete O'Hanlon

13-Jun-12 8:41

Well, that looks almost like you are trying to create a list of Count_NG and Count_G items. Perhaps that might help.

*pre-emptive celebratory nipple tassle jiggle* - Sean Ewington

"Mind bleach! Send me mind bleach!" - Nagy Vilmos

CodeStash - Online Snippet Management | My blog | MoXAML PowerToys | Mole 2010 - debugging made easier

Re: Adding a variable to a variable name

MichCl13-Jun-12 8:57

MichCl

13-Jun-12 8:57

I already have them in a struct according to shift. Is there a way to use the currentShift variable to add the data to the text box? Maybe I can add the tb variable name to the struct? But then that would be changing in name every shift and not fit in with the code to process the G/NG per shift. I have 3 different tb's, one for each shift, for each G/NG count. The struct looks like this:

[StructLayout(LayoutKind.Sequential)]
 public class Shift
 {
     public char shift; //A, B, C
     public int good_Count = 0;
     public int NG_Count = 0;
 }

Re: Adding a variable to a variable name

Dave Kreskowiak13-Jun-12 9:18

Dave Kreskowiak

13-Jun-12 9:18

You cannot modify a variable name at runtime to point to a different value.

Perhaps a List or a Dictionary would be a better choice.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak

Re: Adding a variable to a variable name

BobJanova14-Jun-12 2:06

BobJanova

14-Jun-12 2:06

So you have variables called tb_Shift_1_Count_NG, tb_Shift_2_Count_NG etc? Surely you could call them tb_Shift[1].Count_NG ... and have a list of Shift objects instead of a whole bunch of variables.

Re: Adding a variable to a variable name

MichCl14-Jun-12 6:37

MichCl

14-Jun-12 6:37

I'd love to implement it that way, except tb_Shift_A_Coung_NG and tb_Shift_B_Count_NG are the names for the textbox. I don't think I can use an array for those, can I?

Re: Adding a variable to a variable name

Pete O'Hanlon14-Jun-12 7:05

Pete O'Hanlon

14-Jun-12 7:05

You can have an array (or list) of textboxes. That's not a problem.

*pre-emptive celebratory nipple tassle jiggle* - Sean Ewington

"Mind bleach! Send me mind bleach!" - Nagy Vilmos

CodeStash - Online Snippet Management | My blog | MoXAML PowerToys | Mole 2010 - debugging made easier

IWebBrowser2 NewWindow3 doesn't track target frame name

vwmberry9513-Jun-12 7:11

vwmberry95

13-Jun-12 7:11

I've implemented a tabbed browser that inherits from IWebBrowser2 and takes advantage of the BeforeNavigate2 and NewWindow3 events. When navigating to a new window, the event is trapped and the new window is sent to a new tab.

using System;
using System.Windows.Forms;

namespace BrowserTests
{
    public partial class CustomBrowser : Form
    {
        public CustomBrowser()
        {
            InitializeComponent();
        }

        private void CustomBrowser_Load(object sender, EventArgs e)
        {
            this.CreateTabBrowser();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            // Navigate the current window to the given URL
            (this.tabControl1.SelectedTab.Tag as WebBrowser).Navigate(this.textBox1.Text);
        }

        private WebBrowser CreateTabBrowser()
        {
            // Create a new tab, add it, and select it
            TabPage tab = new TabPage();
            this.tabControl1.TabPages.Add(tab);
            this.tabControl1.SelectedTab = tab;

            // Create a new browser
            WebBrowser web = new WebBrowser()
            {
                Parent = tab,
                Dock = DockStyle.Fill,
                Tag = tab
            };

            tab.Tag = web;

            // Wire the events
            SHDocVw.WebBrowser axWeb = (SHDocVw.WebBrowser)web.ActiveXInstance;
            axWeb.BeforeNavigate2 += new SHDocVw.DWebBrowserEvents2_BeforeNavigate2EventHandler(axWeb_BeforeNavigate2);
            axWeb.NewWindow3 += new SHDocVw.DWebBrowserEvents2_NewWindow3EventHandler(axWeb_NewWindow3);

            return web;
        }

        void axWeb_BeforeNavigate2(object pDisp, ref object URL, ref object Flags, ref object TargetFrameName, ref object PostData, ref object Headers, ref bool Cancel)
        {
            // Do checks here
        }

        void axWeb_NewWindow3(ref object ppDisp, ref bool Cancel, uint dwFlags, string bstrUrlContext, string bstrUrl)
        {
            // Create a new tab browser
            WebBrowser web = this.CreateTabBrowser();
            SHDocVw.WebBrowser axWeb = (SHDocVw.WebBrowser)web.ActiveXInstance;

            // Point to the new tab browser
            ppDisp = axWeb.Application;
        }

    }
}

Some pages are trying to navigate to a new window marked as a frame: Site With Example Behavior
(second link is what I'm trying to replicate). Click the link, it opens a new window/tab... switch windows/tabs, click the same link, it should now navigate to the other window/tab that was just created. However, since each tab window is a new browser, the pages cannot find the frame to navigate to and it results in a new window every time, not just the first time.

I've tried the following modification but I don't have a reference to the new window's frame name...

void axWeb_NewWindow3(ref object ppDisp, ref bool Cancel, uint dwFlags, string bstrUrlContext, string bstrUrl)
{
    foreach (TabPage tabPage in this.tabControl1.TabPages)
    {
        WebBrowser web = (WebBrowser)tabPage.Tag;
        SHDocVw.WebBrowser axWeb = (SHDocVw.WebBrowser)web.ActiveXInstance;

        if (web.Document.Window.Name == "targetFrameName")
        {
            ppDisp = axWeb.Application;
            this.tabControl1.SelectedTab = tabPage;
            return;
        }
    }

    // Create a new tab browser
    WebBrowser web = this.CreateTabBrowser();
    SHDocVw.WebBrowser axWeb = (SHDocVw.WebBrowser)web.ActiveXInstance;

    ppDisp = axWeb.Application;
}

If I hard code the name of the target frame on various sites that I know of, the navigation gets sent to the existing frame like it should and does not create a new window.

Anyone know how I can get the target frame name of a new window?

Thanks!

PHP web service requires array but how to send correct array with C#?

JD8613-Jun-12 7:01

JD86

13-Jun-12 7:01

Hello there!

I have a third party web service that was written in PHP. I've added the web reference to visual studio and the methods take an object[] as the parameter.

Now according to their documentation if I were to create this client in php it would look something like this for the object[]:

PHP

$params = array(
‘username’ => $user,
‘password’ => $pass,
‘param1’ => $param1_value,
);

How do I create this in C#? I can't do Dictionary<string, string=""> because I can't convert that to an object[].

Message Closed

13-Jun-12 8:51

WebMaster

13-Jun-12 8:51

Message Closed

Re: PHP web service requires array but how to send correct array with C#?

JD8613-Jun-12 12:42

JD86

13-Jun-12 12:42

I tried your suggestions:

Custom Class:

class MCInfo
    {
        public string username { get; set; }
        public string password { get; set; }
        public string supportname { get; set; }
    }

Linq:

List<MCInfo> info = new List<MCInfo>();
                info.Add(
                    new MCInfo()
                    {
                        username = "administrator",
                        password = "testing",
                        supportname = "BLAH BLAH"
                    });

                var results = (from n in info
                               select new
                               {
                                   username = n.username,
                                   password = n.password,
                                   supportname = n.supportname
                               }).ToArray();

Invoke:

object[] blah = soap.domainEdit("blah.com", results);

Unfortunately it doesn't look like the other end is able to process it:

System.InvalidOperationException: There was an error generating the XML document
. ---> System.InvalidOperationException: <>f__AnonymousType0`3[System.String,Sys
tem.String,System.String] cannot be serialized because it does not have a parame
terless constructor.
at System.Xml.Serialization.TypeDesc.CheckSupported()
at System.Xml.Serialization.TypeScope.GetTypeDesc(Type type, MemberInfo sourc
e, Boolean directReference, Boolean throwOnError)
at System.Xml.Serialization.XmlSerializationWriter.CreateUnknownTypeException
(Type type)
at System.Xml.Serialization.XmlSerializationWriter.GetPrimitiveTypeName(Type
type, Boolean throwIfUnknown)
at System.Xml.Serialization.XmlSerializationWriter.WriteArray(String name, St
ring ns, Object o, Type type)
at System.Xml.Serialization.XmlSerializationWriter.WriteReferencedElement(Str
ing name, String ns, Object o, Type ambientType)
at System.Xml.Serialization.XmlSerializationWriter.WriteReferencedElements()
at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationWriterApi_Mo
del_SoapInterfaceService.Write31_domainEdit(Object[] p)
at Microsoft.Xml.Serialization.GeneratedAssembly.ArrayOfObjectSerializer61.Se
rialize(Object objectToSerialize, XmlSerializationWriter writer)
at System.Xml.Serialization.XmlSerializer.Serialize(XmlWriter xmlWriter, Obje
ct o, XmlSerializerNamespaces namespaces, String encodingStyle, String id)
--- End of inner exception stack trace ---
at System.Xml.Serialization.XmlSerializer.Serialize(XmlWriter xmlWriter, Obje
ct o, XmlSerializerNamespaces namespaces, String encodingStyle, String id)
at System.Xml.Serialization.XmlSerializer.Serialize(XmlWriter xmlWriter, Obje
ct o, XmlSerializerNamespaces namespaces, String encodingStyle)
at System.Web.Services.Protocols.SoapHttpClientProtocol.Serialize(SoapClientM
essage message)
at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodN
ame, Object[] parameters)
at **********.com.domain.mta1_ar1.Api_Model_SoapInterfaceService.d
omainEdit(String domain_name, Object[] params) in C:\Users\*****\Dropbox\C
ompsys\****\*****t\Web References\com.*****.mta1-ar1\
Reference.cs:line 226
at *****.Program.Main(String[] args) in C:\Users\*******\Dropbo
x\*****\******\******\Program.cs:line 107

I haven't worked with XML or soap calls much. $Shucks | :-\$

Re: PHP web service requires array but how to send correct array with C#?

BobJanova14-Jun-12 2:08

BobJanova

14-Jun-12 2:08

That absolutely is a dictionary. I'm surprised a dictionary doesn't generate the correct service XML ... have you tried passing the dictionary as the only argument to the service method?

Re: PHP web service requires array but how to send correct array with C#?

JD8614-Jun-12 2:57

JD86

14-Jun-12 2:57

The problem with that is the only parameter it wants is an object array (object[]).
So how do I convert a dictionary into an object[]? They are completely different types of arrays.

These methods were generated when I added the service to visual studio. Maybe I should try calling the service manually?

Re: PHP web service requires array but how to send correct array with C#?

BobJanova14-Jun-12 3:51

BobJanova

14-Jun-12 3:51

You can try new object[]{ dict } which will create a one element array for parameters.

I don't really trust VS's automagical code generation but you can check the WSDL that the service exposes to see what the SOAP type of the parameter it expects is, and then try searching for that plus C# to see what .Net type will resolve to that.

Re: PHP web service requires array but how to send correct array with C#?

JD8614-Jun-12 3:56

JD86

14-Jun-12 3:56

I'll try to find that information. Browsing to the wsdl service this is what I see:

XML

<message name="domainEditIn">
<part name="domain_name" type="xsd:string"/>
<part name="params" type="soap-enc:Array"/>
</message>

Re: PHP web service requires array but how to send correct array with C#?

BobJanova14-Jun-12 5:54

BobJanova

14-Jun-12 5:54

Hm, so that is just an array. Do you have a working PHP client? Try request-spying what it sends to the service and see what it's sending there. I had a very quick search and I didn't find a page explaining how PHP maps an associative array to a soap-enc:Array.

Re: PHP web service requires array but how to send correct array with C#?

JD8614-Jun-12 5:57

JD86

14-Jun-12 5:57

I don't have a working PHP client.

The API is here: http://www.mailcleaner.net/downloads/MailCleanerAPI.pdf[^]

They gave an example of this to call with PHP:

PHP

$client = new SoapClient(‘https://mailcleaner_base_url/api/soap/?wsdl‘);
$params = array(
‘spam_tag’ => ‘{This is a spam}’,
‘summary_frequency’ => ‘weekly,
…
);
$result = $client->domainEdit(‘domain_name’, $params);
if ($result[‘code’] == 200) {
echo ‘domain edited’ ;
}

So you can see that PHP is doing a multidimensional array.. but there isn't a way to create this array with C# and convert it to object[].

I haven't done it before but maybe calling the soap manually instead of using the web reference?

Exception has been thrown by the target of an invocation.

MichCl13-Jun-12 6:01

MichCl

13-Jun-12 6:01

I did some cleanup in my code, and now I'm getting the above error message, but I'm having trouble seeing the reason. I searched the internet and found this article, but I don't see that I'm having that issue.

http://www.softwareandfinance.com/forums/index.php?topic=314.0[^]

In my Program.cs class, I have the following lines of code.

Control control = new Control();
Assembly _assembly = Assembly.LoadFrom(programDll);
Type _type = _assembly.GetType("CWriter.ProgramControl");
//problem here?
Object _objectInstance = Activator.CreateInstance(_type); //exception thrown

I tried adding a breakpoint in the ProgramControl constructor, but it doesn't get hit. The constructor doesn't have any arguments to it.

Re: Exception has been thrown by the target of an invocation.

Pete O'Hanlon13-Jun-12 6:10

Pete O'Hanlon

13-Jun-12 6:10

Wrap the Activator.CreateInstance in a try/catch block and then take a look at the full exception. Is there an InnerException that provides more details (there should be)?

*pre-emptive celebratory nipple tassle jiggle* - Sean Ewington

"Mind bleach! Send me mind bleach!" - Nagy Vilmos

CodeStash - Online Snippet Management | My blog | MoXAML PowerToys | Mole 2010 - debugging made easier

Re: Exception has been thrown by the target of an invocation.

MichCl13-Jun-12 7:12

MichCl

13-Jun-12 7:12

That helped a lot. Thanks! It looks like it can't find a file that the class it's trying to invoke is trying to use. I had pulled some code into it's own SerialNumber class. That's the problem. Thank you!

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