Is there a way how can I hide expand/collapse icon for all treeview? I found that icon should be hiding if there is no items for node. But I want to hide it everywhere in tree. I just want to expand tree when I selected node text (I have implemented this).
C# – WPF – TreeView hide expand icon (arrow)
cdatatemplatetreeviewwpf
Related Solutions
Whereas one approach is to implement the ICloneable
interface (described here, so I won't regurgitate), here's a nice deep clone object copier I found on The Code Project a while ago and incorporated it into our code.
As mentioned elsewhere, it requires your objects to be serializable.
using System;
using System.IO;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Binary;
/// <summary>
/// Reference Article http://www.codeproject.com/KB/tips/SerializedObjectCloner.aspx
/// Provides a method for performing a deep copy of an object.
/// Binary Serialization is used to perform the copy.
/// </summary>
public static class ObjectCopier
{
/// <summary>
/// Perform a deep copy of the object via serialization.
/// </summary>
/// <typeparam name="T">The type of object being copied.</typeparam>
/// <param name="source">The object instance to copy.</param>
/// <returns>A deep copy of the object.</returns>
public static T Clone<T>(T source)
{
if (!typeof(T).IsSerializable)
{
throw new ArgumentException("The type must be serializable.", nameof(source));
}
// Don't serialize a null object, simply return the default for that object
if (ReferenceEquals(source, null)) return default;
using var Stream stream = new MemoryStream();
IFormatter formatter = new BinaryFormatter();
formatter.Serialize(stream, source);
stream.Seek(0, SeekOrigin.Begin);
return (T)formatter.Deserialize(stream);
}
}
The idea is that it serializes your object and then deserializes it into a fresh object. The benefit is that you don't have to concern yourself about cloning everything when an object gets too complex.
In case of you prefer to use the new extension methods of C# 3.0, change the method to have the following signature:
public static T Clone<T>(this T source)
{
// ...
}
Now the method call simply becomes objectBeingCloned.Clone();
.
EDIT (January 10 2015) Thought I'd revisit this, to mention I recently started using (Newtonsoft) Json to do this, it should be lighter, and avoids the overhead of [Serializable] tags. (NB @atconway has pointed out in the comments that private members are not cloned using the JSON method)
/// <summary>
/// Perform a deep Copy of the object, using Json as a serialization method. NOTE: Private members are not cloned using this method.
/// </summary>
/// <typeparam name="T">The type of object being copied.</typeparam>
/// <param name="source">The object instance to copy.</param>
/// <returns>The copied object.</returns>
public static T CloneJson<T>(this T source)
{
// Don't serialize a null object, simply return the default for that object
if (ReferenceEquals(source, null)) return default;
// initialize inner objects individually
// for example in default constructor some list property initialized with some values,
// but in 'source' these items are cleaned -
// without ObjectCreationHandling.Replace default constructor values will be added to result
var deserializeSettings = new JsonSerializerSettings {ObjectCreationHandling = ObjectCreationHandling.Replace};
return JsonConvert.DeserializeObject<T>(JsonConvert.SerializeObject(source), deserializeSettings);
}
According to the StyleCop Rules Documentation the ordering is as follows.
Within a class, struct or interface: (SA1201 and SA1203)
- Constant Fields
- Fields
- Constructors
- Finalizers (Destructors)
- Delegates
- Events
- Enums
- Interfaces (interface implementations)
- Properties
- Indexers
- Methods
- Structs
- Classes
Within each of these groups order by access: (SA1202)
- public
- internal
- protected internal
- protected
- private
Within each of the access groups, order by static, then non-static: (SA1204)
- static
- non-static
Within each of the static/non-static groups of fields, order by readonly, then non-readonly : (SA1214 and SA1215)
- readonly
- non-readonly
An unrolled list is 130 lines long, so I won't unroll it here. The methods part unrolled is:
- public static methods
- public methods
- internal static methods
- internal methods
- protected internal static methods
- protected internal methods
- protected static methods
- protected methods
- private static methods
- private methods
The documentation notes that if the prescribed order isn't suitable - say, multiple interfaces are being implemented, and the interface methods and properties should be grouped together - then use a partial class to group the related methods and properties together.
Related Topic
- C# – String representation of an Enum
- C# – LINQ’s Distinct() on a particular property
- C# – Data binding to SelectedItem in a WPF Treeview
- C# – Implementing INotifyPropertyChanged – does a better way exist
- WPF TreeView databinding to hide/show expand/collapse icon
- C# – reason for C#’s reuse of the variable in a foreach
- Scala: list.flatten: no implicit argument matching parameter type (Any) = > Iterable[Any] was found
Best Answer
You can add these styles to
Window
orUserControl
resources: