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. The value can be null for reference types.
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: