TextBox string as tooltip on hover

问题

I'm building an application and I have a TextBox control that is filled with a value. On some occasions the control is too small and I don't have the space to expand it.

How do you show the TextBox content on hover when the control is too small?

回答1:

Add a tooltip to the form and the following code

 Private Sub TextBox1_MouseHover(ByVal sender As Object, ByVal e As System.EventArgs) Handles TextBox1.MouseHover
    ToolTip1.SetToolTip(TextBox1, TextBox1.Text)
End Sub

回答2:

This has the same answer as this question: Showing Textbox ToolTip

Private _toolTip As New ToolTip()

Private Sub TextBox1_TextChanged(ByVal sender As Object, ByVal e As EventArgs) _
                                 Handles TextBox1.TextChanged
  _toolTip.Show(TextBox1.Text, TextBox1)
End Sub

来源：https://stackoverflow.com/questions/38244139/textbox-string-as-tooltip-on-hover