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For mocking, I love JustMock from Telerik. It allows you to mock things that other mocking frameworks just can't cope with.
This space for rent
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How how can I download a PDF from PDF drive.net programmatically????
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You will not get any help from this site to download illegally copied files: and that is exactly what the site you reference specializes in. The files it contains are copyrighted to the various authors and publishers and are effectively stolen.
Since we have many book authors here - and even more of us write technical documents and know exactly how hard it is to do - downloading books from illegal sites is not something we wish to be associated with.
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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Hi everybody
I have a DataGrid control for which one of the columns consists in ComboBox controls defined in a DataTemplate (refer to the xaml snippet below).
The ComboBox controls are populated through data binding and everything works fine.
My problem: I would like to disable (from code behind) the selected ComboBox control item as long as the treatment associated to that selection is not complete.
Any idea, comment, suggestion?
Here is the xaml snippet:
<datagrid name="onGoingActionsGrid" autogeneratecolumns="False" background="Transparent" borderbrush="Transparent"
="" canuseraddrows="False" canuserdeleterows="False" canuserresizerows="False" canuserresizecolumns="False">
<datagrid.columns>
<datagridtextcolumn header="Actions" width="235" binding="{Binding Name}">
<datagridtemplatecolumn header="State" isreadonly="True" width="40">
<datagridtemplatecolumn.celltemplate>
<datatemplate>
<datagridtemplatecolumn header="Control" width="50">
<datagridtemplatecolumn.celltemplate>
<datatemplate>
<combobox x:name="ControlActionComboBox"
="" itemssource="{Binding CollectionOfPictograms, Mode=TwoWay}" selectionchanged="controlAction_SelectionChanged" selecteditem="{Binding SelectedItem, Mode=TwoWay}" selectedvaluepath="Content">
<combobox.itemcontainerstyle>
<Setter Property="Padding" Value="4.3"/>
<Setter Property="BorderBrush" Value="LightGray"/>
<Setter Property="BorderThickness" Value="1"/>
<combobox.itemtemplate>
<datatemplate>
<dockpanel>
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You said you want to "disable" the combo box "item" ...
You can't disable "items"; you can only handle / not handle them explicitly.
As for "controls", add a bool "Enabled" property to the code-behind / view-model that has GET logic related the treatment and is bound to the .IsEnabled property of the control (i.e. combo) in the XAML.
"(I) am amazed to see myself here rather than there ... now rather than then".
― Blaise Pascal
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(You should respond in the forums so everyone can see your answer).
Set the “IsEnabled” on the “combo box” in the XAML; not in the “item container” style.
Each “row” / item has it's own combo box (in this case).
"(I) am amazed to see myself here rather than there ... now rather than then".
― Blaise Pascal
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApp2
{
class Program
{
static void Main(string[] args)
{
double wip;
double hii;
double bmi;
Console.Write("Eneter Weight in pounds:");
wip = Double.Parse(Console.ReadLine());
Console.Write("Enter height in inches:");
hii = Double.Parse(Console.ReadLine());
bmi = wip * 703 / Math.Pow(hii, 2);
Console.WriteLine($"bmi is: {bmi}");
Console.ReadLine();
if (bmi > 18.50)
{
Console.WriteLine("You are under weight.");
}
else if (bmi >= 24.9)
{
Console.WriteLine("Your weight is normal.");
}
else if (bmi > 30)
{
Console.WriteLine("You are obse.");
}
}
}
}
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The BMI classification is defined like this:
- Underweight = <18.5
- Normal weight = 18.5-24.9
- Overweight = 25-29.9
- Obesity = >=30
(Source: Calculate Your BMI - Metric BMI Calculator[^])
To write that in your code, you can do this:
if (bmi < 18.5)
{
}
else if (bmi < 25)
{
}
else if (bmi < 30)
{
}
else
{
}
The quick brown ProgramFOX jumps right over the Lazy<Dog>.
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C# program and the client is running it on a server. It is installed on the remote server and it is accessed by different user under different accounts. It was written to be installed on the same computer that it is run from but I just found out the client installed it on a server. It appears that all the users are sharing the same user.config file. Could someone explain to me how the config files work when a .net program is run on a server? I need to fix it so it can be run either from the server or from a workstation. Could someone either point me to the right place to look I am either searching using the wrong words or explain to me what happens with the config files when you run from a server. I'm currently using the settings.settings built into C#
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The processing of config files does not change if the app is running on the server version of Windows.
You have to find out HOW they are running your app on the server. For example, are they running the app under Remote Desktop? Terminal Services? Citrix? Or something similar? What's the configuration of the application objects in whatever sharing app they're using your app under.
Either they are going to change the configuration of the server and whatever app/desktop sharing they're using or your app would have to be modified to support running under these systems successfully.
System.ItDidntWorkException: Something didn't work as expected.
-- said no compiler, ever.
C# - How to debug code[ ^].
Seriously, go read this article.
Dave Kreskowiak
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how i get the object location in image by pixel coordinate ?
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Google for "machine vision" and you'll find out just how hard this is to implement.
You're never going to get a full explanation about how this works or how to do it in a forum environment. There's just far too much information to convey. Think entire sets of university classes.
Having said that, start with this[^] and go check out the OpenCV library[^] and Emgu[^], which is a .NET wrapper for OpenCV.
System.ItDidntWorkException: Something didn't work as expected.
-- said no compiler, ever.
C# - How to debug code[ ^].
Seriously, go read this article.
Dave Kreskowiak
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Message Closed
modified 4-Jan-18 9:19am.
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Strings are immutable: you cannot change a string once created. Any attempt to change it generates a new string.
So this:
string a = "hello";
string b = a;
b += " world"; Means that a and b do not contain the same string: a has "hello" and b has "hello world". All string modification operations return a new string, the old is unmodified.
That's a problem if you are generating a big string in little pieces: adding lines to a chunk of text before you write it to a file for example:
string myBook = "";
foreach(string line in myDatabaseRows)
{
myBook += line;
}This allocates a new string each time you add, so it starts to use up memory at a rapid rate of knots - and it starts to get quite slow, as each time you add a new line, you have to allocate memory for the new output, and copy the whole of the existing text into it, add the extra line, and move on. That's very inefficient!
That's where a StringBuilder comes in: It's a string which can be changed, or grown:
StringBuilder myBook = new StringBuilder();
foreach(string line in myDatabaseRows)
{
myBook.Append(line);
}
string output = myBook.ToString();This does a lot fewer allocate-and-copy operations (it allocates an amount of space at the start and if you exceed that, it allocates twice as much and copies everything over) so it's a whole load more efficient - particularly if you can guess how much space you need and allocate that at the beginning:
StringBuilder myBook = new StringBuilder(1000000); Will give you a megabyte to start with, and if you don't exceed that it's the only allocation that is done - no "extra" copyiong is ever needed.
They are also needed if you start interop working with native code which doesn't know that strings are immutable - you hand them a StringBuilder and they can fill it in as needed. But that's the advanced stuff!
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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The end reason is performance: Stringbuilder can cancatenate strings faster (for the reasons previously mentioned).
But you need to be doing a bit more than simply combining "a few"; though it can help readability of code in cerain cases.
"(I) am amazed to see myself here rather than there ... now rather than then".
― Blaise Pascal
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Hi everybody,
I would like to update the content of a datagrid control depending on inputs from a child window.
Let's say I have a child window which consists of a dialog box requiring inputs from the user and a button "Proceed".
Once the user clicks on "Proceed" the child window is closed but the entered inputs are used to update a datagrid on the parent window.
Best regards,
RV
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The child window should not know anything at all about its "parent" window, nor should it try to manipulate any controls on it.
The correct way to do this would be to have the child window expose it's data and events that the parent window can subscribe to. The parent window will be responsible for updating it's own controls with the new data as it sees fit.
System.ItDidntWorkException: Something didn't work as expected.
-- said no compiler, ever.
C# - How to debug code[ ^].
Seriously, go read this article.
Dave Kreskowiak
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Another method would be to collect the data from the dialog and pass it back to the parent viewmodel when the dialog closes.
Never underestimate the power of human stupidity
RAH
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Use a shared data source: e.g. POCO / class object; (observable) collection.
Preferably supporting INotifyPropertyChanged.
"(I) am amazed to see myself here rather than there ... now rather than then".
― Blaise Pascal
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Thank you to all of you answers.
I have found a way to do by placing the following code snippet in the child method from which I want to update a DataGrid control on the parent window:
foreach (Window window in Application.Current.Windows)
{
if (window.GetType() == typeof(AlarmResolution))
{
(window as AlarmResolution).userReportDataGrid.Items.Add(userReport);
}
}
Where AlarmResolution is the parent window and userReportDataGrid is the DataGrid control on that parent window that needs to be updated according to child treatment.
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I was reading this article:
C# - All About Span: Exploring a New .NET Mainstay[^]
It seems that these new template classes allow for the instantiation of something that would be on new heap (and therefore at the mercy of the all-powerful system garbage collector), but instead could be done on some existing mamory, including that created on the stack - which of course would allow the programmer to have some control over when the memory is released.
Or perhaps I am way off and too far into my Samuel Adams Winter Lager sessioning to properly grok this ...
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Well, the main idea behind Span<T> is outlined here[^]. The key section worth looking at states this:
Span<T> is a new type we are adding to the platform to represent contiguous regions of arbitrary memory, with performance characteristics on par with T[]. Its APIs are similar to the array, but unlike arrays, it can point to either managed or native memory, or to memory allocated on the stack.
For the memory class, it's worth reading the goals here[^].
This space for rent
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Hi good day!
I just want to know about the complete code and the process of RFID system with sms notification using c# or any tutorial for me to help me out of my thesis project please....
Thank You for reading.....
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