In Visual Basic .NET, you can remove leading and trailing whitespaces from a string using the Trim() function. Here's an example:
``vb.net
Dim myString As String = " Hello World "
myString = myString.Trim()
Console.WriteLine(myString) ' Output: "Hello World"
Trim()
In this example, the function is called on the myString variable, which contains leading and trailing whitespaces. The function removes these whitespaces and assigns the result back to myString. The Console.WriteLine() statement then displays the trimmed string.
Here's another example that shows how to remove only leading or trailing whitespaces:
vb.net
Dim myString As String = " Hello World "
myString = myString.TrimStart()
Console.WriteLine(myString) ' Output: "Hello World "
myString = myString.TrimEnd()
Console.WriteLine(myString) ' Output: " Hello World"
vb.netTrimStart()
In the first example, thefunction is used to remove only the leading whitespaces, leaving the trailing whitespaces intact. In the second example, theTrimEnd()function is used to remove only the trailing whitespaces, leaving the leading whitespaces intact.Trim()Note that the
function removes all types of whitespace characters, including spaces, tabs, and line breaks. If you want to remove only spaces, you can use theTrim()function in combination with theReplace()function:
Dim myString As String = " Hello World "
myString = myString.Replace(" ", "").Trim()
Console.WriteLine(myString) ' Output: "HelloWorld"
`
In this example, the spaces are first replaced with empty strings using the
Replace() function. Then, the Trim()` function is called to remove any remaining leading or trailing whitespaces. The resulting string is "HelloWorld".