Re: c sharp windows form application in visual studio - C# Discussion Boards

Re: Access a combobox defined in datatemplate

Hervend20-Dec-17 22:45

20-Dec-17 22:45

Thank you Gerry for your reply,

Actually I had in mind to do a treatment, depending on the selected item. For that purpose, it is essential to determine which item was selected from controlActionComboBox.

But in the code behind I cannot address this comboBox through its name. That's the issue.
And I cannot figure out how to do what I have in mind.

Best regards,

RV

Re: Access a combobox defined in datatemplate

Pete O'Hanlon20-Dec-17 23:15

Pete O'Hanlon

20-Dec-17 23:15

You can't wire up to an item in your DataTemplate directly. That's not the way that DataTemplates work. You'll need to do something like this[^] and then add the event handlers.

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Re: Access a combobox defined in datatemplate

Hervend21-Dec-17 0:02

Hervend

21-Dec-17 0:02

Thank you Pete for your reply,

I've finally got the solution to this issue through:

string text = (((sender as ComboBox).SelectedItem) as ActionPicture).ImageName

Where ActionPicture is the picture enclosed in the selected. And ImageName is the name of that picture.

Best regards,

Rv

Linq to Update multiple fields in the list

Member 984545419-Dec-17 20:36

Member 9845454

19-Dec-17 20:36

Hi I need to refactor this code..thanks in advance for any help!!
public MyListViewModel GetData(List<UpdatingViewModel>  updatingList, MyListViewModel myList)
        {
           foreach(UpdatingViewModel x in updatingList)
            {
                x.Gain = myList.UpdatingView[0].Gain;
                x.Amount = myList.UpdatingView[0].Amount;
                x.Minimum = myList.UpdatingView[0].Minimum;
                x.Charge = myList.UpdatingView[0].Charge;
                x.abc = myList.UpdatingView[0].abc;
            }
		}

Re: Linq to Update multiple fields in the list

Richard Deeming20-Dec-17 2:29

Richard Deeming

20-Dec-17 2:29

Start by renaming the method. A method that updates something should not be called Get...!

Fix the compilation error. The method is declared as returning a MyListViewModel, but it doesn't return anything.

Then provide a proper description of what you're trying to do, what you've tried, and where you're stuck.

"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer

Re: Linq to Update multiple fields in the list

Gerry Schmitz20-Dec-17 4:37

Gerry Schmitz

20-Dec-17 4:37

How do you know when you've succeeded?

Is it: abc; Abc; ABC?

"(I) am amazed to see myself here rather than there ... now rather than then".
― Blaise Pascal

c sharp windows form application in visual studio

Member 1358596919-Dec-17 20:30

Member 13585969

19-Dec-17 20:30

add new tools to my tool box as *.dll file.

Re: c sharp windows form application in visual studio

OriginalGriff19-Dec-17 21:38

OriginalGriff

19-Dec-17 21:38

Simplest way?
Open the Design view on any form.
Open the Toolbox pane.
Close branches so you get "clear space".
Use Windows explorer to browse to the DLL or EXE file containing your controls.
Drag the Assembly file to the ToolBox and drop it there.

You can also create a new Tab first, and drop them on that if you want it a bit tidier.

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How to speech russian text in C#?

Ldta19-Dec-17 15:38

Ldta

19-Dec-17 15:38

Now, I am building an application like Russian dictionary. How to program the Russian pronunciation in C #, which library to use? Does the Speech or Speech.lib libraries contain "text to speech" functions for Russian as well as for English? Please Help me solve text russian to speech in C # using library or not?

modified 20-Dec-17 7:32am.

Re: How to speech russian text in C#?

Pete O'Hanlon19-Dec-17 19:35

Pete O'Hanlon

19-Dec-17 19:35

According to this[^], yes it does. BTW, remove your email address from your signature - that's a sure fire way to get spammed.

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Re: How to speech russian text in C#?

Ldta20-Dec-17 1:43

Ldta

20-Dec-17 1:43

Thank you so much. Can you show me how to use the SDK? Currently I'm using C # 2012 but have not installed the SDK in C #? Please show me how to use it.

Re: How to speech russian text in C#?

Pete O'Hanlon20-Dec-17 2:43

Pete O'Hanlon

20-Dec-17 2:43

Google not working at your end?

Drag and drop dynamically a video from a media player to another container

Hervend19-Dec-17 0:19

Hervend

19-Dec-17 0:19

Hi everybody,

I'm currently developing an application in which I have to drag a video from in a media element into another container (let's say a kind of library). The video must keep playing in the media element and only a copy is "stored" in that library.

All the videos present in the library must be visible in order to eventually be reloaded (through drag and drop) into the media player for vizualization.

Have someone an idea on how this could be achieved?

Best regards,

RV

Re: Drag and drop dynamically a video from a media player to another container

Richard MacCutchan19-Dec-17 2:48

Richard MacCutchan

19-Dec-17 2:48

It sounds like you need to do a copy operation in the drag, see Performing Drag-and-Drop Operations[^]

Re: Drag and drop dynamically a video from a media player to another container

Hervend19-Dec-17 20:37

Hervend

19-Dec-17 20:37

Thank you Richard for your reply,

I'm gonna read this article and find out how it can be helpful for my project.

RV

save appointment on the shared exchange calendar

maxim^18-Dec-17 23:22

maxim^

18-Dec-17 23:22

Hello
I should save appointments on the shared exchange calendar,
how can I do

Re: save appointment on the shared exchange calendar

OriginalGriff18-Dec-17 23:26

OriginalGriff

18-Dec-17 23:26

CTRL+S?

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Re: save appointment on the shared exchange calendar

Pete O'Hanlon19-Dec-17 4:03

Pete O'Hanlon

19-Dec-17 4:03

Here you go[^].

This space for rent

lambda expression to retrieve sequence based on an array value where the array is stored in the sequence

Krellon18-Dec-17 23:02

Krellon

18-Dec-17 23:02

Hi guys,

Probably a simple task but i'm struggling with it.

I have a list of objects, lets call this a list of Object1. Each Object1 contains a list of another object lets say Object2.

Object2 has 2 properties. 'Name' and 'Value'.

I want to be able to select Object1 where Object2.Name equals a specified value using lambda.

eg

class Object2
{
    public string Name {get; set;}
    public string Value {get; set;}
}

class Object1
{
    public List<Object2> theList = new List<Object2>(){ new Object2(){Name = "Blah", Value = "Blah"}};
}

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();

        var myList = Object1.Where(m => m.theList.Name == "Blah") // This is where im confused and would like some clarity of operation
        
    }
}

I hope I explained myself clearly.

Many thanks for your help
Br
Nigel

Re: lambda expression to retrieve sequence based on an array value where the array is stored in the sequence

OriginalGriff18-Dec-17 23:25

OriginalGriff

18-Dec-17 23:25

There are a lot of things wrong with that!
Object1 is a class, not a collection, so you can;t use Where on it.
Name is not a property of the list, it;'s a property of teh objects teh list contains.

Try this:

List<Object1> myList = new List<Object1>();
myList.Add(new Object1());
myList.Add(new Object1());
myList.Add(new Object1());
IEnumerable<Object1> myResults = myList.Where(m => m.theList.FirstOrDefault(o => o.Name == "Blah") != null);

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Re: lambda expression to retrieve sequence based on an array value where the array is stored in the sequence

Krellon19-Dec-17 0:13

Krellon

19-Dec-17 0:13

Thanks Member 12616185,

Yes, Object1 was meant to be a collection of Object1's. My bad for not proof reading. Thanks for spotting and correcting.

Your reply worked a treat. Here's the implementation I used which served my purpose.

var myResults = Object1.Where(m => m.Object2.Select(o => o.Value == "802.11g") != null);

Many thanks again for the help

Br
Nigel

Re: lambda expression to retrieve sequence based on an array value where the array is stored in the sequence

Richard Deeming19-Dec-17 2:19

Richard Deeming

19-Dec-17 2:19

Member 12616185 wrote:

var myResults = Object1.Where(m => m.Object2.Select(o => o.Value == "802.11g") != null);

That's not going to do what you want. It's just going to return every item from the input sequence, since m.Object2.Select(...) returns an IEnumerable<T> which is never equal to null.

Try:

var myResults = Object1.Where(m => m.Object2.Any(o => o.Value == "802.11g"));

"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer

Re: lambda expression to retrieve sequence based on an array value where the array is stored in the sequence

Krellon19-Dec-17 5:37

Krellon

19-Dec-17 5:37

Hi Homer, I thought the query might return all results in the collection where value == 802.11g and Object2 wasn't equal to null. I have so much to learn Smile | :)

I did a test run and you were right! all objects came back in the collection.

I have since implemented your recommendation and that worked Smile | :)

Here's my test code for ref.

using System.Collections.Generic;
using System.Linq;

namespace ConsoleApp3
{
  class Program
  {
    static void Main(string[] args)
    {
      List<Object1> origCollection = new List<Object1>()
        {
          new Object1() {ID = 1, theList = new List<Object2>()
            {
              new Object2() { Name = "Mode", Value = "802.11b" },
              new Object2() { Name = "BW", Value = "20" },
              new Object2() { Name = "Chan", Value = "1" },
              new Object2() { Name = "Tech", Value = "SISO" }
            }
          },
          new Object1() { ID = 2, theList = new List<Object2>()
            {
              new Object2(){ Name = "Mode", Value = "802.11g" },
              new Object2(){ Name = "BW", Value = "20" },
              new Object2(){ Name = "Chan", Value = "1" },
              new Object2(){ Name = "Tech", Value = "SISO" }
            }
          }   
        };

        var theCollection0 = origCollection.Where(m => m.theList.Select(n => n.Value == "802.11b") != null); // Broken

        var theCollection1 = origCollection.Where(m => m.theList.Any(n => n.Value == "802.11b"));            // Works!
        var theCollection3 = origCollection.Where(m => m.theList.Any(n => n.Value == "802.11z"));            // Returns Empty as expected.
    }
  };


  class Object1
  {
    public int ID { get; set; }
    public List<Object2> theList; 
  }

  class Object2
  {
    public string Name { get; set; }
    public string Value { get; set; }
  }
}

Many thanks for spotting and fixing this! your a star Smile | :)

Br
Nigel

Re: lambda expression to retrieve sequence based on an array value where the array is stored in the sequence

Richard Deeming19-Dec-17 2:17

Richard Deeming

19-Dec-17 2:17

Probably simpler to replace the .FirstOrDefault(test) != null with .Any(test):

IEnumerable<Object1> myResults = myList.Where(m => m.theList.Any(o => o.Name == "Blah"));

"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer

Re: lambda expression to retrieve sequence based on an array value where the array is stored in the sequence

OriginalGriff19-Dec-17 2:26

OriginalGriff

19-Dec-17 2:26

Good idea - it's easier to read.

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