Loopings In VB.NET (FOR EACH)

问题

I am currently making a program in vb.net. it has lots of Text box inside of it. how do i clear them using for each loop.

I have here my code but nothing happens in my program, my text boxes still have data.

For Each txt As TextBox In personalInfo.Controls
            txt.Enabled = False
Next

by the way i have three group boxes with text boxes how do i clear all of text boxes with this code.

回答1:

Use

txt.Clear();

for clearing a TextBox. Are you sure that all controls in personalInfo are TextBoxes? If not, use

For Each txt In personalInfo.Controls
   If TypeOf (txt) Is TextBox Then
      txt.Clear()
   End If
Next

来源：https://stackoverflow.com/questions/26195345/loopings-in-vb-net-for-each