GetDateForFirstDayOfWeek(DateTime) メソッド

date を含む週の最初の日の System.DateTime を返します。

シンタックス

Visual Basic

'宣言
 
Public Overloads Function GetDateForFirstDayOfWeek( _
   ByVal date As Date _
) As Date

C#

public DateTime GetDateForFirstDayOfWeek( 
   DateTime date
)

パラメータ

date

週の最初の日を計算する日付。

戻り値の型

その年の週を開始する日のDateTime。

使用例

Visual Basic

Imports Infragistics.Win
Imports Infragistics.Win.UltraWinSchedule
Imports System.IO
Imports System.Globalization

    Private Sub button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles button1.Click

        Dim firstDateOfFirstWeek As DateTime
        firstDateOfFirstWeek = Me.ultraCalendarInfo1.GetDateForFirstDayOfWeek(1, DateTime.Today.Year)

        MessageBox.Show("The first day of the first week in the current year is " + firstDateOfFirstWeek.ToLongDateString() + "." + vbCrLf, "GetDateForFirstDayOfWeek", MessageBoxButtons.OK)

    End Sub

C#

using System.Diagnostics;
using Infragistics.Win;
using Infragistics.Win.UltraWinSchedule;
using System.IO;
using System.Globalization;

		private void button1_Click(object sender, System.EventArgs e)
		{
			
			DateTime firstDateOfFirstWeek;
			firstDateOfFirstWeek = this.ultraCalendarInfo1.GetDateForFirstDayOfWeek( 1, DateTime.Today.Year );

			MessageBox.Show( "The first day of the first week in the current year is " + firstDateOfFirstWeek.ToLongDateString() + "." + "\n", "GetDateForFirstDayOfWeek", MessageBoxButtons.OK );

		}