value validation

Question

Hi I have a winform that contains the following 4 textboxes and a button. a)first name b)ssn c)lastname d)city e)zip here if the user doesnot enter the values for first name and/or last name then it should give a message saying please enter the first name and/or last name . And the zip field's value is 5 characters so if the user enters lessthan or morethan 5 characters then again it should give a message saying zip values is too short or too long.

Vimal Kandasamy · Answer

Hi In a button click event you simply check like firstname.Text.Lengh or firstname.Text== [firstname refers Textbox]... for zip if(zip.Text.Length==5)) { //add you code } else MessageBox.Show(zip must be 5 charsError); [zip refers Textbox] you can combine these conditions with the help of && operator try it..