Могу ли я создать тип календаря утилита в ASP.NET?

С очень просто! Вот пример:

<form runat="server">
<Asp: Календарь ID = "календарь" Runat = "сервер" EnableViewState = "ложной"
Font-Name = "Verdana"
Font-Size = "10px"
SelectorStyle-BackColor = "# EEEEEE"
TodayDayStyle-BackColor = "# 008080"
TodayDayStyle-ForeColor = "# FFFFFF"
DayHeaderStyle-BackColor = "# EEEEEE"
OtherMonthDayStyle-ForeColor = "# 800000"
TitleStyle-ForeColor = "# FFFFFF"
TitleStyle-BackColor = "# 008080"
TitleStyle-Font-Bold = "True"
TitleStyle-Font-Size = "10px"
SelectedDayStyle-BackColor = "# EEEEEE"
SelectedDayStyle-Font-Bold = "True" />
</ FORM>