C# StringDictionary ContainsKey
Description
StringDictionary ContainsKey determines if the StringDictionary
contains a specific key.
Syntax
StringDictionary.ContainsKey has the following syntax.
public virtual bool ContainsKey(
string key
)
Parameters
StringDictionary.ContainsKey has the following parameters.
key- The key to locate in the StringDictionary.
Returns
StringDictionary.ContainsKey method returns true if the StringDictionary contains an entry with the specified key; otherwise,
false.
Example
using System;/* ww w. j av a2 s. co m*/
using System.Collections;
using System.Collections.Specialized;
public class SamplesStringDictionary {
public static void Main() {
StringDictionary myCol = new StringDictionary();
myCol.Add( "red", "rojo" );
myCol.Add( "green", "verde" );
myCol.Add( "blue", "azul" );
if ( myCol.ContainsKey( "red" ) )
Console.WriteLine( "The collection contains the key \"red\"." );
else
Console.WriteLine( "The collection does not contain the key \"red\"." );
}
}
The code above generates the following result.
