Help about Validate Textbox and combobox and DateTimepicker

Question

if i have textbox and combobox and datetimepicker and need to make validate for they entry on some button how can handle that

Kirtan Patel · Answer

TextBox For textBox Validation you Can have 2 options Either use Regular Expression to Compare Content Format or Use Strong hard coded Validation using If Condition ie forValidation TextBox for That user Enteres Only 5 Numbers in it then on Leave Event of Text Box Write Code RegEx re = new RegEx([0-9]{5}); if(re.IsMatch(textBox1.Text) == false) { textBox1.Text =  ; } ComboBox For Validating Combo Box u have to Use If Condition Or Switch Case DatetimePicker For Validation DateTimePicker there Are two Properties That are MaxDate and MinDate Happy Coding :)