C# Hashtable ContainsValue
Description
Hashtable ContainsValue determines whether the Hashtable
contains a specific value.
Syntax
Hashtable.ContainsValue has the following syntax.
public virtual bool ContainsValue(
Object value
)
Parameters
Hashtable.ContainsValue has the following parameters.
value- The value to locate in the Hashtable. The value can be null.
Returns
Hashtable.ContainsValue method returns true if the Hashtable contains an element with the specified value; otherwise,
false.
Example
We can use the ContainsValue() method to check if Hashtable contains a value.
using System;/*from w w w .j a v a2s . c o m*/
using System.Collections;
class MainClass
{
public static void Main()
{
Hashtable myHashtable = new Hashtable();
myHashtable.Add("AL", "Alabama");
myHashtable.Add("CA", "California");
myHashtable.Add("FL", "Florida");
myHashtable.Add("NY", "New York");
myHashtable.Add("WY", "Wyoming");
foreach (string myKey in myHashtable.Keys)
{
Console.WriteLine("myKey = " + myKey);
}
foreach(string myValue in myHashtable.Values)
{
Console.WriteLine("myValue = " + myValue);
}
if (myHashtable.ContainsValue("Florida"))
{
Console.WriteLine("myHashtable contains the value Florida");
}
}
}
The code above generates the following result.
