Is it possible to change the mask and displaymask of a maskedtextbox clientside? I have a combobox with countries and based on that value i want to change the mask and displaymask of the maskedtextbox. Is this possible?
Check the following forum thread which implements on how to set mask on javascript. Setting Mask with Javascript
Then unfortunately you could not change the display mask with javascript. It could just be set by the DisplayMask property in the asp code.