ASP.NET中获取当日,当周,当月,当年的日期
ASP.NET中获取当日,当周,当月,当年的日期
在ASP.NET开发中,经常会碰到要获取当日,当周,当月,当年的日期。
以下将源码贴出来和大家分享。
aspx中代码如下:
<table
cellspacing="2" cellpadding="0" width="98%"
align="center">
<tr>
<td>
<asp:Label ID="lblDate" runat="server"
Text="日期"></asp:Label>:
</td>
<td>
<asp:Button ID="btnYear" runat="server" Text="当年"
CssClass="ButtonCss" OnClick="btnYear_Click"
/>
<asp:Button ID="btnMonth" runat="server" Text="当月"
CssClass="ButtonCss" OnClick="btnMonth_Click"
/>
<asp:Button ID="btnWeek" runat="server" Text="当周"
CssClass="ButtonCss" OnClick="btnWeek_Click"
/>
<asp:Button ID="btnDay" runat="server" Text="当天"
CssClass="ButtonCss" OnClick="btnDay_Click" />
</td>
</tr>
<tr>
<td>
</td>
<td>
<asp:TextBox ID="txtStartDate"
runat="server"></asp:TextBox> -
<asp:TextBox ID="txtEndDate"
runat="server"></asp:TextBox>
</td>
</tr>
</table>
C#.NET代码为
protected void
btnYear_Click(object sender, EventArgs e)
{
string
toyear = DateTime.Now.ToString("yyyy");
txtStartDate.Text = toyear + "-01-01";
txtEndDate.Text = toyear + "-12-31";
}
protected void
btnMonth_Click(object sender, EventArgs e)
{
DateTime
today = DateTime.Now;
string
lastday = DateTime.DaysInMonth(today.Year,
today.Month).ToString();
txtStartDate.Text = DateTime.Now.ToString("yyyy-MM") + "-01";
txtEndDate.Text = today.ToString("yyyy-MM") + "-" + lastday;
}
protected void
btnWeek_Click(object sender, EventArgs e)
{
DateTime
today = DateTime.Now;
int week =
Convert.ToInt32(today.DayOfWeek);
DateTime
sunday = today.AddDays(-week);
DateTime
saturday = today.AddDays(7 - week);
txtStartDate.Text = sunday.ToString("yyyy-MM-dd");
txtEndDate.Text = saturday.ToString("yyyy-MM-dd");
}
protected void
btnDay_Click(object sender, EventArgs e)
{
string today
= DateTime.Now.ToString("yyyy-MM-dd");
txtStartDate.Text = today;
txtEndDate.Text = today;
}
VB.NET代码为:
Protected Sub
btnYear_Click(ByVal sender As Object, ByVal e As System.EventArgs)
Handles btnYear.Click
Dim toyear
As String = DateTime.Now.ToString("yyyy")
txtStartDate.Text = toyear + "-01-01"
txtEndDate.Text = toyear + "-12-31"
End Sub
Protected Sub
btnMonth_Click(ByVal sender As Object, ByVal e As System.EventArgs)
Handles btnMonth.Click
Dim today As
DateTime = DateTime.Now
Dim lastday
As String = DateTime.DaysInMonth(today.Year,
today.Month).ToString()
txtStartDate.Text = DateTime.Now.ToString("yyyy-MM") + "-01"
txtEndDate.Text = today.ToString("yyyy-MM") + "-" + lastday
End Sub
Protected Sub
btnWeek_Click(ByVal sender As Object, ByVal e As System.EventArgs)
Handles btnWeek.Click
Dim today As
DateTime = DateTime.Now
Dim week As
Int32 = Convert.ToInt32(today.DayOfWeek)
Dim sunday
As DateTime = today.AddDays(-week)
Dim saturday
As DateTime = today.AddDays(7 - week)
txtStartDate.Text = sunday.ToString("yyyy-MM-dd")
txtEndDate.Text = saturday.ToString("yyyy-MM-dd")
End Sub
Protected Sub
btnDay_Click(ByVal sender As Object, ByVal e As System.EventArgs)
Handles btnDay.Click
Dim today As
String = DateTime.Now.ToString("yyyy-MM-dd")
txtStartDate.Text = today
txtEndDate.Text = today
End Sub
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