Remove Method
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IDictionary.Remove Method

Removes the element with the specified key from the IDictionary object.

Namespace:  System.Collections
Assembly:  mscorlib (in mscorlib.dll)

void Remove(
	Object key


Type: System.Object
The key of the element to remove.


key is null.


The IDictionary object is read-only.


The IDictionary has a fixed size.

If the IDictionary object does not contain an element with the specified key, the IDictionary remains unchanged. No exception is thrown.

The following code example demonstrates how to implement the Remove method. This code example is part of a larger example provided for the IDictionary class.

public void Remove(object key)
   if (key == null) throw new ArgumentNullException("key");
   // Try to find the key in the DictionaryEntry array
   Int32 index;
   if (TryGetIndexOfKey(key, out index))
      // If the key is found, slide all the items up.
      Array.Copy(items, index + 1, items, index, ItemsInUse - index - 1);
      // If the key is not in the dictionary, just return. 


Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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