This method is used to check whether the Dictionary<TKey,TValue> contains a specific value or not.
Syntax:
. 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:
csharp
csharp
public bool ContainsValue (TValue value);Here, the value is the Value to locate in the Dictionary
// 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:
Example 2:
Value : India is not present.
// 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:
Reference:
Value : Moscow is present