I am working on a research project for tunnelling in which I have to use winforms as input pages through configuration add-in but I am having a problem with winforms. When I click an add-in button and the winform pops up it doesn't let me add the text into the text boxes. I have checked and readonly property for the text box, it is set to false. I cannot figure out the problem. Kindly help me with this issue.
Picture added are showing before the map load and after the map load states.