SelectedDatesCollection Class
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public ref class SelectedDatesCollection sealed : System::Collections::ICollection
public sealed class SelectedDatesCollection : System.Collections.ICollection
type SelectedDatesCollection = class
interface ICollection
interface IEnumerable
Public NotInheritable Class SelectedDatesCollection
Implements ICollection
- Inheritance
-
SelectedDatesCollection
- Implements
The following code example demonstrates how to programmatically use the SelectedDatesCollection class to select dates in the Calendar control.
<%@ Page Language="C#"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
void Page_Load(Object sender, EventArgs e)
{
DisplayCalendar.VisibleDate = DisplayCalendar.TodaysDate;
}
void SelectButton_Click(Object sender, EventArgs e)
{
int current_day = DisplayCalendar.VisibleDate.Day;
int current_month = DisplayCalendar.VisibleDate.Month;
int current_year = DisplayCalendar.VisibleDate.Year;
DisplayCalendar.SelectedDates.Clear();
// Iterate through the current month and add all Wednesdays to the
// SelectedDates collection of the Calendar control.
for (int i = 1; i <= System.DateTime.DaysInMonth(current_year, current_month); i++)
{
DateTime currentDate = new DateTime(current_year, current_month, i);
if (currentDate.DayOfWeek == DayOfWeek.Wednesday)
{
DisplayCalendar.SelectedDates.Add(currentDate);
}
}
MessageLabel.Text = "Selection Count = " + DisplayCalendar.SelectedDates.Count.ToString();
}
void DisplayCalendar_SelectionChanged(Object sender, EventArgs e)
{
MessageLabel.Text = "Selection Count = " + DisplayCalendar.SelectedDates.Count.ToString();
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>ASP.NET Example</title>
</head>
<body>
<form id="form1" runat="server">
<asp:calendar id="DisplayCalendar" runat="server"
selectionmode="DayWeekMonth"
onselectionchanged="DisplayCalendar_SelectionChanged" />
<hr />
<asp:button id="SelectButton"
text="Select All Weds in Month"
onclick="SelectButton_Click"
runat="server"/>
<br/>
<asp:label id="MessageLabel"
runat="server" />
</form>
</body>
</html>
<%@ Page Language="VB"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
DisplayCalendar.VisibleDate = DisplayCalendar.TodaysDate
End Sub
Sub SelectButton_Click(ByVal sender As Object, ByVal e As EventArgs)
Dim current_day As Integer = DisplayCalendar.VisibleDate.Day
Dim current_month As Integer = DisplayCalendar.VisibleDate.Month
Dim current_year As Integer = DisplayCalendar.VisibleDate.Year
DisplayCalendar.SelectedDates.Clear()
' Iterate through the current month and add all Wednesdays to the
' SelectedDates collection of the Calendar control.
Dim i As Integer
For i = 1 To System.DateTime.DaysInMonth(current_year, current_month)
Dim currentDate As New DateTime(current_year, current_month, i)
If currentDate.DayOfWeek = DayOfWeek.Wednesday Then
DisplayCalendar.SelectedDates.Add(currentDate)
End If
Next
MessageLabel.Text = "Selection Count = " + DisplayCalendar.SelectedDates.Count.ToString()
End Sub
Sub DisplayCalendar_SelectionChanged(ByVal sender As Object, ByVal e As EventArgs)
MessageLabel.Text = "Selection Count = " & DisplayCalendar.SelectedDates.Count.ToString()
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>ASP.NET Example</title>
</head>
<body>
<form id="form1" runat="server">
<asp:calendar id="DisplayCalendar" runat="server"
selectionmode="DayWeekMonth"
onselectionchanged="DisplayCalendar_SelectionChanged" />
<hr />
<asp:button id="SelectButton"
text="Select All Weds in Month"
onclick="SelectButton_Click"
runat="server"/>
<br/>
<asp:label id="MessageLabel"
runat="server" />
</form>
</body>
</html>
Use this class to programmatically manage a collection of System.DateTime objects that represent the selected dates in a Calendar control. This class is commonly used to add or remove dates from the collection.
This collection stores only whole dates. The time portion of each System.DateTime is removed. The dates are stored in ascending order. If there are duplicate dates, only one date is stored in the collection.
Selected |
Initializes a new instance of the SelectedDatesCollection class with the specified date list. |
Count |
Gets the number of DateTime objects in the SelectedDatesCollection collection. |
Is |
Gets a value indicating whether the SelectedDatesCollection collection is read-only. |
Is |
Gets a value indicating whether access to the SelectedDatesCollection collection is synchronized (thread safe). |
Item[Int32] |
Gets a DateTime object at the specified index in the SelectedDatesCollection collection. |
Sync |
Gets the object that can be used to synchronize access to the SelectedDatesCollection collection. |
Add(Date |
Appends the specified DateTime object to the end of the SelectedDatesCollection collection. |
Clear() |
Removes all DateTime objects from the collection. |
Contains(Date |
Returns a value indicating whether the SelectedDatesCollection collection contains the specified DateTime object. |
Copy |
Copies the items from the SelectedDatesCollection collection to the specified Array, starting with the specified index. |
Equals(Object) |
Determines whether the specified object is equal to the current object. (Inherited from Object) |
Get |
Returns an IEnumerator-implemented object that contains all DateTime objects within the SelectedDatesCollection collection. |
Get |
Serves as the default hash function. (Inherited from Object) |
Get |
Gets the Type of the current instance. (Inherited from Object) |
Memberwise |
Creates a shallow copy of the current Object. (Inherited from Object) |
Remove(Date |
Removes the specified DateTime object from the SelectedDatesCollection collection. |
Select |
Adds the specified range of dates to the SelectedDatesCollection collection. |
To |
Returns a string that represents the current object. (Inherited from Object) |
Cast<TResult>(IEnumerable) |
Casts the elements of an IEnumerable to the specified type. |
Of |
Filters the elements of an IEnumerable based on a specified type. |
As |
Enables parallelization of a query. |
As |
Converts an IEnumerable to an IQueryable. |
Product | Versions |
---|---|
.NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
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