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- Written by: Stanko Milosev
- Category: C#
- Hits: 765
using System;
using System.Collections.Generic;
using System.Windows.Forms;
namespace UltraGridHierarchical
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
List<MyChild> stankosKids = new List<MyChild>();
stankosKids.Add(new MyChild {Name = "Velimir", Gender = "Male"});
stankosKids.Add(new MyChild {Name = "Hilda", Gender = "Female"});
List<MyChild> arnoldsKids = new List<MyChild>();
arnoldsKids.Add(new MyChild {Name = "Thomas", Gender = "Male"});
arnoldsKids.Add(new MyChild {Name = "Sabrina", Gender = "Female"});
List<MyChild> chucksKids = new List<MyChild>();
chucksKids.Add(new MyChild {Name = "Bruce", Gender = "Male"});
chucksKids.Add(new MyChild {Name = "Lee", Gender = "Female"});
List<MyParent> list = new List<MyParent>();
list.Add(new MyParent {ID = 1, FirstName = "Stanko", LastName = "Milosev", Address = "Herseler strasse 8", MyKids = stankosKids});
list.Add(new MyParent {ID = 2, FirstName = "Arnold", LastName = "Schwarzeneger", Address = "Whitehouse 1", MyKids = arnoldsKids});
list.Add(new MyParent {ID = 3, FirstName = "Chuck", LastName = "Norris", Address = "Las Vegas", MyKids = chucksKids});
ultraGrid1.SetDataBinding(list, null);
}
public class MyParent
{
public int ID { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public string Address { get; set; }
public List<MyChild> MyKids { get; set; }
}
public class MyChild
{
public string Name { get; set; }
public string Gender { get; set; }
}
}
}
Source code.
- Details
- Written by: Stanko Milosev
- Category: C#
- Hits: 5186
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<configSections>
<section name="links" type="System.Configuration.NameValueSectionHandler">
</section>
</configSections>
<links>
<add key="link1" value="http://www.milosev.com/csharp/" />
<add key="link2" value="http://milosev.com/asp-net-mvc-3" />
</links>
<appSettings>
<add key="homePage" value="http://milosev.com/" />
</appSettings>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.1" />
</startup>
</configuration>
.NET code:
using System;
using System.Collections.Specialized;
using System.Configuration;
namespace CustomConfig
{
class Program
{
static void Main(string[] args)
{
NameValueCollection links = ConfigurationManager.GetSection("links") as NameValueCollection;
string homePage = ConfigurationManager.AppSettings.Get("homePage");
Console.WriteLine("Home page: " + homePage);
foreach (string link in links)
{
Console.WriteLine("Link: " + links.Get(link));
}
Console.WriteLine("Press any key...");
Console.ReadKey();
}
}
}
In reference list you will need to add System.Configuration.
POI:
<configSections>
<section name="links" type="System.Configuration.NameValueSectionHandler">
</section>
</configSections>
Here is more about configSection.
Also notice line:
Console.WriteLine("Link: " + links.Get(link));
- Details
- Written by: Stanko Milosev
- Category: C#
- Hits: 5536
One my example of interpolated string (taken from here):
string name = "stanko";
DateTime hours = DateTime.Now;
Console.WriteLine($"Name = {name}, hours = {hours:hh}");
Console.ReadKey();
Composite string:
string name = "stanko";
Console.WriteLine("Name = {0}, hours = {1:hh}", name, DateTime.Now);
Console.ReadKey();
According to Microsoft:
Interpolated string are easier to understand than a composite format string.
- Details
- Written by: Stanko Milosev
- Category: C#
- Hits: 5196
To assign IEnumerable to a new instance of IEnumerable, you will need ToList method. Here is an example:
IEnumerable instanceOne;
IEnumerable instanceTwo;
List instanceListOne = new List();
instanceListOne.Add("a");
instanceListOne.Add("b");
instanceOne = instanceListOne;
instanceTwo = instanceOne;
instanceListOne.Add("c");
foreach (string instance in instanceTwo)
{
Console.WriteLine(instance);
}
Console.WriteLine("Press any key");
Console.ReadKey();
instanceTwo = instanceOne.ToList();
instanceListOne.Add("d");
foreach (string instance in instanceTwo)
{
Console.WriteLine(instance);
}
Console.WriteLine("Press any key");
Console.ReadKey();
Notice first:
instanceListOne.Add("a");
instanceListOne.Add("b");
instanceOne = instanceListOne;
instanceTwo = instanceOne;
Then:
instanceListOne.Add("c");
I added firs "a" and "b" to instanceListOne, I assigned instanceListOne to instanceOne, and then I assigned instanceOne to instanceTwo, after that I added "c" to instanceListOne, then I went through instanceTwo and result is:
"c" is displayed also in instanceTwo.
Now to have two separate instances of IEnumerable, we need something like:
instanceTwo = instanceOne.ToList();
After that I did something like:
instanceListOne.Add("d");
Result will be still as in previous picture, "d" is not added to instanceTwo, since now we really have separate instances.
Example download from here.