Question

I want my TextBox to make the text I enter as Sentence Case(ProperCase).. but I don’t want to write any code in an event like Lost Focus or KeyPress.

Just by default, whenever a user enters or types in a textbox the first letter of every word should automatically be converted into UpperCase.

Answer 1

I don’t know of a way to do this in WinForms without putting some code in an event. The CharacterCasing property of a TextBox allows you to force all characters entered to upper or lower case, but not to do Proper Casing. Incidentally, it’s a single line of code to do it in an event:

TextBox1.Text = StrConv(TextBox1.Text, VbStrConv.ProperCase)

A more generic handler for doing this across multiple textboxes involves attaching a number of events to the same code:

'Attach multiple events to this handler
Private Sub MakeProperCase(sender As Object, e As EventArgs) Handles _
    TextBox1.LostFocus, TextBox2.LostFocus, TextBox3.LostFocus

    'Get the caller of the method and cast it to a generic textbox
    Dim currentTextBox As TextBox = DirectCast(sender, TextBox)
    'Set the text of the generic textbox to Proper Case
    currentTextBox.Text = StrConv(currentTextBox.Text, VbStrConv.ProperCase)

End Sub

In ASP.NET, you can do this without code; there’s a CSS property called text-transform, one of the values for this property is capitalize. When applied to a text input element, it makes the first letter of each word uppercase.