CSharpTest.Net
TryRemove(TKey,TValue) Method
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CSharpTest.Net.BPlusTree Assembly > CSharpTest.Net.Collections Namespace > BPlusTree<TKey,TValue> Class > TryRemove Method : TryRemove(TKey,TValue) Method

key
The key of the element to remove.
value
The value that was removed.

Glossary Item Box

Removes the element with the specified key from the IDictionary.

Syntax

Visual Basic (Declaration) 
Public Overloads Function TryRemove( _
   ByVal key As TKey, _
   ByRef value As TValue _
) As Boolean
C# 
public bool TryRemove( 
   TKey key,
   out TValue value
)

Parameters

key
The key of the element to remove.
value
The value that was removed.

Return Value

true if the element is successfully removed; otherwise, false. This method also returns false if key was not found in the original IDictionary.

Example

BPlusTree/BPlusTree.Test/BasicTests.cs

C#Copy Code
using (BPlusTree<int, string> data = Create(Options))
{
    Assert.IsTrue(data.TryAdd(1, "a"));
    Assert.IsFalse(data.TryAdd(1, "a"));

    Assert.IsTrue(data.TryUpdate(1, "a"));
    Assert.IsTrue(data.TryUpdate(1, "c"));
    Assert.IsTrue(data.TryUpdate(1, "d", "c"));
    Assert.IsFalse(data.TryUpdate(1, "f", "c"));
    Assert.AreEqual("d", data[1]);
    Assert.IsTrue(data.TryUpdate(1, "a", data[1]));
    Assert.AreEqual("a", data[1]);
    Assert.IsFalse(data.TryUpdate(2, "b"));

    string val;
    Assert.IsTrue(data.TryRemove(1, out val) && val == "a");
    Assert.IsFalse(data.TryRemove(2, out val));
    Assert.AreNotEqual(val, "a");
}
VB.NETCopy Code
Using data As BPlusTree(Of Integer, String) = Create(Options)
    Assert.IsTrue(data.TryAdd(1, "a"))
    Assert.IsFalse(data.TryAdd(1, "a"))

    Assert.IsTrue(data.TryUpdate(1, "a"))
    Assert.IsTrue(data.TryUpdate(1, "c"))
    Assert.IsTrue(data.TryUpdate(1, "d", "c"))
    Assert.IsFalse(data.TryUpdate(1, "f", "c"))
    Assert.AreEqual("d", data(1))
    Assert.IsTrue(data.TryUpdate(1, "a", data(1)))
    Assert.AreEqual("a", data(1))
    Assert.IsFalse(data.TryUpdate(2, "b"))

    Dim val As String
    Assert.IsTrue(data.TryRemove(1, val) AndAlso val = "a")
    Assert.IsFalse(data.TryRemove(2, val))
    Assert.AreNotEqual(val, "a")
End Using

Requirements

Target Platforms: Windows XP, Windows Server 2003, Windows Vista, Windows Server 2008, Windows 7

See Also

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