Hello!,

How I can limit textbox (or combo) from accepting only numbers and
Minimum is zero and maximum is Number of days in a specific month?

say for eg. In comboBox1 i select february then textBox1 shoul accept
only from 0 to 28 or in case of april 0 to 30, May 0 to 31 etc...

based on the value in textbox1 textbox2 is calculated, so textbox1
should not be allowed to be empty to avoid an error

thanks