hi
i want some of the following validation code can any one help me plz for(C# WINDOW APPLICATION)
1 VALIDATION FOR RADIO BUTTON IN NOT CHECKED
2 VALIDATION FOR CHECK BOX IN NOT CHECKED
3 VALIDATION FOR DROP DOWN BOX IF NOT SELECTED
4 VALIDATION FOR PHONE NO (should not exit 10 for mobile and 8 for land phone & must be integer)
plz help in code