C# | Dictionary.ContainsValue() Method
This method is used to check whether the Dictionary<TKey,TValue> contains a specific value or not.
Syntax:
public bool ContainsValue (TValue value);
Here, the value is the Value to locate in the Dictionary
Return Value: This method returns true if the Dictionary contains an element with the specified value otherwise it returns false.
Below are the programs to illustrate the use of Dictionary<TKey,TValue>.ContainsValue() Method:
Example 1:
// C# code to check if a value // is present or not in a Dictionary. using System; using System.Collections.Generic; class GFG { // Driver code public static void Main() { // Create a new dictionary of // strings, with string keys. Dictionary< string , string > myDict = new Dictionary< string , string >(); // Adding key/value pairs in myDict myDict.Add( "Australia" , "Canberra" ); myDict.Add( "Belgium" , "Brussels" ); myDict.Add( "Netherlands" , "Amsterdam" ); myDict.Add( "China" , "Beijing" ); myDict.Add( "Russia" , "Moscow" ); myDict.Add( "India" , "New Delhi" ); // Checking the value "India" but // here "India" is the key if (myDict.ContainsValue( "India" )) Console.WriteLine( "Value : India is present." ); else Console.WriteLine( "Value : India is not present." ); } } |
Output:
Value : India is not present.
Example 2:
// C# code to check if a value is // present or not in a Dictionary. using System; using System.Collections.Generic; class GFG { // Driver code public static void Main() { // Create a new dictionary of // strings, with string keys. Dictionary< string , string > myDict = new Dictionary< string , string >(); // Adding key/value pairs in myDict myDict.Add( "Australia" , "Canberra" ); myDict.Add( "Belgium" , "Brussels" ); myDict.Add( "Netherlands" , "Amsterdam" ); myDict.Add( "China" , "Beijing" ); myDict.Add( "Russia" , "Moscow" ); myDict.Add( "India" , "New Delhi" ); // Checking for value Moscow if (myDict.ContainsValue( "Moscow" )) Console.WriteLine( "Value : Moscow is present" ); else Console.WriteLine( "Value : Moscow is absent" ); } } |
Output:
Value : Moscow is present
Reference:
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