Hi,
I have a page with a calendar and two datalist items - one containing
month values and the other, year values. Depending on the month/year
value chosen ( in text/string format ) I should be able to display
the correct month of the calendar.
I thought it would be possible to use the OnSelectedIndexChanged
attribute of the dropdown list to call a javascript function that sets
the month value of the calendar...Something like :
<asp
ropDownList ID="MonthList" runat="server" AutoPostBack="True"
DataSourceID="AuctionMonthDataSource" OnSelectedIndexChanged=getcal()
</asp
ropDownList>
But how do I get access to the SelectedDate tag from inside getcal() ?
And do I have to manually convert the text values of the month into
numeric values ?
Thanks !
<asp
ropDownList id="ddlMonth" style="Z-INDEX: 101; LEFT: 64px;
POSITION: absolute; TOP: 24px" runat="server"
AutoPostBack="True"></asp
ropDownList>
<asp:Label id="Label1" style="Z-INDEX: 103; LEFT: 8px; POSITION:
absolute; TOP: 24px" runat="server">Month</asp:Label>
<asp
ropDownList id="ddlYear" style="Z-INDEX: 102; LEFT: 200px;
POSITION: absolute; TOP: 24px" runat="server"
AutoPostBack="True"></asp
ropDownList>
<asp:Label id="Label2" style="Z-INDEX: 104; LEFT: 152px; POSITION:
absolute; TOP: 24px" runat="server">Year</asp:Label>
<asp:Calendar id="Calendar1" style="Z-INDEX: 105; LEFT: 16px;
POSITION: absolute; TOP: 72px" runat="server"></asp:Calendar>
VB.NET
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles MyBase.Load
' Put user code to initialize the page here
If Not Page.IsPostBack Then
'Populate month in the dropdownlist
Dim strMonth As String = ""
Dim i As Integer
For i = 1 To 12
If i.ToString().Length < 2 Then
strMonth = "0" + i.ToString()
ddlMonth.Items.Add(New ListItem(strMonth, strMonth))
Else
ddlMonth.Items.Add(New ListItem(strMonth, strMonth))
End If
Next
ddlMonth.Items.FindByValue(DateTime.Now.ToString("MM")).Selected =
True
'Populate year in the dropdownlist
Dim j As Integer
For j = 1900 To 2050
ddlYear.Items.Add(New ListItem(j.ToString(),
j.ToString()))
Next
ddlYear.Items.FindByText(DateTime.Now.ToString("yyyy")).Selected =
True
End If
End Sub 'Page_Load
Private Sub ddlMonth_SelectedIndexChanged(ByVal sender As
System.Object, ByVal e As System.EventArgs) Handles
ddlMonth.SelectedIndexChanged
SetCalendarDate()
End Sub 'ddlMonth_SelectedIndexChanged
Private Sub ddlYear_SelectedIndexChanged(ByVal sender As
System.Object, ByVal e As System.EventArgs) Handles
ddlYear.SelectedIndexChanged
SetCalendarDate()
End Sub 'ddlYear_SelectedIndexChanged
Sub SetCalendarDate()
Dim dtNewDate As DateTime
dtNewDate =
DateTime.Parse((Int16.Parse(ddlMonth.SelectedItem.Text) & "/1/" &
Int16.Parse(ddlYear.SelectedItem.Text)))
Calendar1.TodaysDate = dtNewDate
End Sub 'SetCalendarDate
C#
private void Page_Load(object sender, System.EventArgs e)
{
// Put user code to initialize the page here
if (!Page.IsPostBack )
{
//Populate month in the dropdownlist
string strMonth="";
for(int i = 1 ;i<=12;i++)
{
if (i.ToString().Length <2 )
{
strMonth ="0" + i.ToString ();
ddlMonth.Items.Add (new
ListItem(strMonth,strMonth )) ;
}
else
{
ddlMonth.Items.Add (new
ListItem(strMonth,strMonth )) ;
}
}
ddlMonth.Items.FindByValue ( DateTime.Now.ToString
("MM")).Selected =true;
//Populate year in the dropdownlist
for(int j = 1900 ;j<=2050;j++)
{
ddlYear.Items.Add (new ListItem(j.ToString(),j.ToString
() )) ;
}
ddlYear.Items.FindByText (DateTime.Now.ToString
("yyyy")).Selected =true;
}
}
private void ddlMonth_SelectedIndexChanged(object sender,
System.EventArgs e)
{
SetCalendarDate();
}
private void ddlYear_SelectedIndexChanged(object sender,
System.EventArgs e)
{
SetCalendarDate();
}
void SetCalendarDate()
{
DateTime dtNewDate;
dtNewDate =DateTime.Parse
(Int16.Parse(ddlMonth.SelectedItem.Text) + "/1/" +
Int16.Parse( ddlYear.SelectedItem.Text));
Calendar1.TodaysDate=dtNewDate ;
}
