c sharp Group Box

Group Box Control :

Group box control in C# windows form Application Group the similer controls and apply same properties on all control inside group box . using a Group box  is very time saving  , you dont have to set font  , size color  properties of all control you have to just set it once and  will be applied to all control in that group Box.

As you can see in above example the font size property is set once  of group box and all control in the group box are  having the same property (font size) same Date&Time Picker is placed under the group box which have default properties.  
Date and Time Picker 
in C# windows Form application Date & time picker control provide the current date in time in C# windows form applications. the date and time is picked by the users system on which  your program will run .  used to keep time and date of operations performed in  Database applications.