'txtName' is not declared. It may be inaccessible due to its protection level

Question

After putting a textbox on my page when I compile it I get the above error:

\'txtName\' is not declared. It may be inaccessible due to its protection level.

Answer 1

This is what happened at my case.

-I have declared the variable at behind code

Protected Friend sMessage As String = ""

-Then the aspx : <%=sMessage%>

this case appears (visual studio 2015 - asp webform project)

Then I try to :

-clean solution

-Rebuild

Then the problem is gone

If the clean solution and rebuild does not work

try to clean the obj directory

If the variable is asp component

make sure runat="server" at the aspx file