In Visual Basic .NET, you can get the value of a key in a hash using the following syntax:
Dim myHash As New Hashtable()
myHash("key1") = "value1"
myHash("key2") = "value2"
Dim value As String = myHash("key1")
In the code above, we first create a new Hashtable object named myHash. We then add two key-value pairs to it using the () syntax. Finally, we retrieve the value associated with the "key1" key using the myHash("key1") syntax and store it in the value variable.
Another way to get the value of a key in a hash in Visual Basic .NET is to use the TryGetValue method, as shown in the code below:
Dim myHash As New Hashtable()
myHash("key1") = "value1"
myHash("key2") = "value2"
Dim value As Object
If myHash.TryGetValue("key1", value) Then
Console.WriteLine("The value of key1 is " & value.ToString())
End If
In the code above, we first create a new Hashtable object named myHash. We then add two key-value pairs to it using the () syntax. Finally, we use the TryGetValue method to retrieve the value associated with the "key1" key. The TryGetValue method takes two parameters: the key to search for, and a variable to store the value if the key is found. If the key is found, TryGetValue returns True and stores the value in the value variable. We can then use the value as needed.