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Showing content from https://docs.microsoft.com/en-us/dotnet/api/system.collections.generic.dictionary-2.remove below:

Dictionary<TKey,TValue>.Remove Method (System.Collections.Generic) | Microsoft Learn

Source:

Dictionary.cs

Source:

Dictionary.cs

Source:

Dictionary.cs

Source:

Dictionary.cs

public:
 virtual bool Remove(TKey key);

public bool Remove(TKey key);

abstract member Remove : 'Key -> bool
override this.Remove : 'Key -> bool

Public Function Remove (key As TKey) As Boolean

key

TKey

The key of the element to remove.

true if the element is successfully found and removed; otherwise, false. This method returns false if key is not found in the Dictionary<TKey,TValue>.

The following code example shows how to remove a key/value pair from a dictionary using the Remove method.

This code example is part of a larger example provided for the Dictionary<TKey,TValue> class (openWith is the name of the Dictionary used in this example).

// Use the Remove method to remove a key/value pair.
Console.WriteLine("\nRemove(\"doc\")");
openWith.Remove("doc");

if (!openWith.ContainsKey("doc"))
{
    Console.WriteLine("Key \"doc\" is not found.");
}

// Use the Remove method to remove a key/value pair.
printfn "\nRemove(\"doc\")"
openWith.Remove "doc" |> ignore

if openWith.ContainsKey "doc" |> not then
    printfn "Key \"doc\" is not found."

' Use the Remove method to remove a key/value pair.
Console.WriteLine(vbLf + "Remove(""doc"")")
openWith.Remove("doc")

If Not openWith.ContainsKey("doc") Then
    Console.WriteLine("Key ""doc"" is not found.")
End If

If the Dictionary<TKey,TValue> does not contain an element with the specified key, the Dictionary<TKey,TValue> remains unchanged. No exception is thrown.

This method approaches an O(1) operation.

.NET Core 3.0+ only: this mutating method may be safely called without invalidating active enumerators on the Dictionary<TKey,TValue> instance. This does not imply thread safety.

• Add(TKey, TValue)
• Remove(TKey)

Source:

Dictionary.cs

Source:

Dictionary.cs

Source:

Dictionary.cs

Source:

Dictionary.cs

Removes the value with the specified key from the Dictionary<TKey,TValue>, and copies the element to the value parameter.

public:
 bool Remove(TKey key, [Runtime::InteropServices::Out] TValue % value);

public bool Remove(TKey key, out TValue value);

member this.Remove : 'Key * 'Value -> bool

Public Function Remove (key As TKey, ByRef value As TValue) As Boolean

key

TKey

The key of the element to remove.

value

TValue

The removed element.

true if the element is successfully found and removed; otherwise, false.

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