# C1DatePicker Task-Based Help

## Content



The task-based help assumes that you are familiar with programming in Visual Studio and know how to use the [C1DatePicker](/componentone/api/wpf/online-datetimeeditors/dotnet-api/C1.WPF.DateTimeEditors/C1.WPF.DateTimeEditors.C1DatePicker.html) control in general. If you are unfamiliar with the **C1DatePicker** control, please see the [C1DatePicker Quick Start](/componentone/docs/wpf/online-datetimeeditors/datepicker/C1DatePicker_Quick_Start) first.

Each topic in this section provides a solution for specific tasks using the **C1DatePicker** control.

Each task-based help topic also assumes that you have created a new WPF project.

## See Also

[Allowing Null Values](/componentone/docs/wpf/online-datetimeeditors/datepicker/C1DatePicker_Task-Based_Help/Allowing_Null_Values2)

[Selecting the Date Format](/componentone/docs/wpf/online-datetimeeditors/datepicker/C1DatePicker_Task-Based_Help/Selecting_the_Date_Format2)

[Setting the First Day of the Week](/componentone/docs/wpf/online-datetimeeditors/datepicker/C1DatePicker_Task-Based_Help/Setting_the_First_Day_of_the_Week)

[Setting the Calendar Start and End Date](/componentone/docs/wpf/online-datetimeeditors/datepicker/C1DatePicker_Task-Based_Help/Setting_the_Calendar_Start_and_End_Date)