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- Written by: Stanko Milosev
- Category: C#
- Hits: 2317
using System; using System.Collections; using System.Collections.Generic; namespace GetEnumerator { class Program { static void Main(string[] args) { GetEnumeratorDict getEnumerator = new GetEnumeratorDict(); foreach (KeyValuePair<int, string> getEnumeratorItem in getEnumerator) { Console.WriteLine($"getEnumeratorItem: {getEnumeratorItem}"); } Console.WriteLine("Press any key "); Console.ReadKey(); } } class GetEnumeratorDict : IEnumerable { readonly Dictionary<int, string> m_internalDictionary = new Dictionary<int, string>(); public GetEnumeratorDict() { m_internalDictionary[1] = "test"; } IEnumerator IEnumerable.GetEnumerator() { return m_internalDictionary.GetEnumerator(); } } }In code line:
IEnumerator IEnumerable.GetEnumerator() { return m_internalDictionary.GetEnumerator(); }You can implement your own OrderBy, something like I already explained hier. Difference between IEnumerator and IEnumerable you can read hier
- Details
- Written by: Stanko Milosev
- Category: C#
- Hits: 2085
My father "Velimir" also had three kids: "Anamaria", "Stanko" and "Nikola"
His sister "Svetlana" had two kids: "Dragan" and "Dragana"
Dragan had one kid "Sanja" and "Dragana" two kids "Jovana" and "Aleksa"
Julka had no kids.
Structure in string looks like this:
"Stanko|Velimir|Anamaria" "Stanko|Velimir|Stanko" "Stanko|Velimir|Nikola" "Stanko|Velimir|Anamaria|Tatjana" "Stanko|Svetlana|Dragan" "Stanko|Svetlana|Dragana" "Stanko|Julka" "Stanko|Svetlana|Dragan|Sanja" "Stanko|Svetlana|Dragana|Jovana" "Stanko|Svetlana|Dragana|Aleksa"Main code:
using System.Collections.Generic; namespace TreeExample { class Program { static void Main(string[] args) { List<string> treeDescriptions = new List<string> { "Stanko|Velimir|Anamaria" }; treeDescriptions.Add("Stanko|Velimir|Stanko"); treeDescriptions.Add("Stanko|Velimir|Nikola"); treeDescriptions.Add("Stanko|Velimir|Anamaria|Tatjana"); treeDescriptions.Add("Stanko|Svetlana|Dragan"); treeDescriptions.Add("Stanko|Svetlana|Dragana"); treeDescriptions.Add("Stanko|Julka"); treeDescriptions.Add("Stanko|Svetlana|Dragan|Sanja"); treeDescriptions.Add("Stanko|Svetlana|Dragana|Jovana"); treeDescriptions.Add("Stanko|Svetlana|Dragana|Aleksa"); TreeMethods geni = new TreeMethods(); TreeStructure geniStructure; geniStructure = geni.CreateStructure(treeDescriptions); } } }Class:
using System; using System.Collections.Generic; namespace TreeExample { class TreeStructure { public string Name { get; set; } public List<TreeStructure> Children; } class TreeMethods { private TreeStructure CreateTree(string structure, TreeStructure parentTree) { if (string.IsNullOrWhiteSpace(structure)) { return null; } else { string[] levels = structure.Split('|'); if (levels.Length > 1) structure = structure.Substring(levels[0].Length + 1, structure.Length - levels[0].Length - 1); else structure = string.Empty; if (parentTree is null) { parentTree = new TreeStructure(); parentTree.Name = levels[0]; if (!string.IsNullOrWhiteSpace(structure)) { parentTree.Children = new List<TreeStructure>(); parentTree.Children.Add(CreateTree(structure, null)); } } else if (parentTree.Children is null) { if (!string.IsNullOrWhiteSpace(structure)) { parentTree.Children = new List<TreeStructure>(); parentTree.Children.Add(CreateTree(structure, null)); } } else { bool found = false; foreach (TreeStructure child in parentTree.Children) { string[] levelsChildren = structure.Split('|'); if (!(child is null)) { if (string.Equals(child.Name, levelsChildren[0], StringComparison.InvariantCultureIgnoreCase)) { CreateTree(structure, child); } } } foreach (TreeStructure child in parentTree.Children) { string[] levelsChildren = structure.Split('|'); if (!(child is null)) { found = string.Equals(child.Name, levelsChildren[0], StringComparison.InvariantCultureIgnoreCase); if (found) { break; } } } if (!found && !string.IsNullOrWhiteSpace(structure)) { parentTree.Children.Add(CreateTree(structure, null)); } } } //there are no more leafs, go out return parentTree; } public TreeStructure CreateStructure(List<string> structures) { TreeStructure treeStructure = null; foreach (string structure in structures) { int level = 0; string[] rootChildren = structure.Split('|'); treeStructure = CreateTree(structure, treeStructure); } return treeStructure; } } }
- Details
- Written by: Stanko Milosev
- Category: C#
- Hits: 3143
using System; using System.Collections.Specialized; using System.Configuration; namespace CustomConfig { class Program { static void Main(string[] args) { MilosevBlogConfig links = (MilosevBlogConfig)ConfigurationManager.GetSection("milosev.com"); string homePage = ConfigurationManager.AppSettings.Get("homePage"); Console.WriteLine("Home page: " + homePage); foreach (MilosevBlogCategoriesElement link in links.MilosevBlogInstances) { Console.WriteLine("Blog category: " + link.BlogCategory); } Console.WriteLine("Press any key..."); Console.ReadKey(); } } public class MilosevBlogCategoriesElement : ConfigurationElement { [ConfigurationProperty("BlogCategory", IsKey = true, IsRequired = true)] public string BlogCategory { get { return (string)base["BlogCategory"]; } set { base["BlogCategory"] = value; } } } public class MilosevBlogCategoriesElementCollection : ConfigurationElementCollection { public MilosevBlogCategoriesElement this[int index] { get { return (MilosevBlogCategoriesElement)BaseGet(index); } set { if (BaseGet(index) != null) BaseRemoveAt(index); BaseAdd(index, value); } } protected override ConfigurationElement CreateNewElement() { return new MilosevBlogCategoriesElement(); } protected override object GetElementKey(ConfigurationElement element) { return ((MilosevBlogCategoriesElement)element).BlogCategory; } } public class MilosevBlogConfig : ConfigurationSection { [ConfigurationProperty("categories")] [ConfigurationCollection(typeof(MilosevBlogCategoriesElementCollection))] public MilosevBlogCategoriesElementCollection MilosevBlogInstances { get { return (MilosevBlogCategoriesElementCollection)this["categories"]; } } } }App.config should look like this:
<?xml version="1.0" encoding="utf-8" ?> <configuration> <configSections> <section name="milosev.com" type="CustomConfig.MilosevBlogConfig, CustomConfig"></section> </configSections> <milosev.com> <categories> <add BlogCategory="csharp"/> <add BlogCategory="asp.net MVC"/> </categories> </milosev.com> <appSettings> <add key="homePage" value="http://milosev.com/" /> </appSettings> <startup> <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.1" /> </startup> </configuration>POI in App.config:
<configSections> <section name="milosev.com" type="CustomConfig.MilosevBlogConfig, CustomConfig"></section> </configSections>Where MilosevBlogConfig looks like:
public class MilosevBlogConfig : ConfigurationSection { [ConfigurationProperty("categories")] [ConfigurationCollection(typeof(MilosevBlogCategoriesElementCollection))] public MilosevBlogCategoriesElementCollection MilosevBlogInstances { get { return (MilosevBlogCategoriesElementCollection)this["categories"]; } } }Source code you can download from here.
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- Written by: Stanko Milosev
- Category: C#
- Hits: 2222
static void Main(string[] args) { int[] gapNumbers = new int[] { 1, 3, 4, 7, 8, 10 }; foreach (int number in FillTheGap(gapNumbers)) { Console.WriteLine(number); } Console.ReadKey(); } private static IEnumerable<int> FillTheGap(int[] gapNumbers) { int prevNumber = 1; foreach (int number in gapNumbers) { if (prevNumber == number) { yield return number; } else { for (; prevNumber < number; prevNumber++) { yield return prevNumber; } yield return number; } prevNumber++; } }POI:
foreach (int number in FillTheGap(gapNumbers))