Add next / previous year button to manage asp calendar

Question

You must add a button for the next previous year in the ASP calendar manager dynamically.

How can I add it next to existing next and prev elements? Can this be done using the dayrender event? Please, help

Answer 1

No, you cannot easily modify an existing calendar. But perhaps this is enough to declare a column above the calendar where you can select the year.

<table> <tr> <td> <asp:DropDownList id="drpCalMonth" Runat="Server" OnSelectedIndexChanged="Set_Calendar" AutoPostBack="true"></asp:DropDownList> <asp:DropDownList id="drpCalYear" Runat="Server" OnSelectedIndexChanged="Set_Calendar" AutoPostBack="true"></asp:DropDownList> </td> </tr> <tr> <td> <asp:Calendar id="cntCalendar" Runat="Server" Width="100%" /> </td> </tr> </table> 

Here are two methods to fill in summer and monthly dropdownlists:

 protected void Populate_MonthList() { //Add each month to the list var dtf = System.Globalization.CultureInfo.CurrentCulture.DateTimeFormat; for(int i=1; i<=12; i++) drpCalMonth.Items.Add(new ListItem(dtf.GetMonthName(i), i.ToString())); //Make the current month selected item in the list drpCalMonth.Items.FindByValue(DateTime.Now.Month.ToString()).Selected = true; } protected void Populate_YearList() { //Year list can be changed by changing the lower and upper //limits of the For statement for (int intYear = DateTime.Now.Year - 20; intYear <= DateTime.Now.Year + 20; intYear++) { drpCalYear.Items.Add(intYear.ToString()); } //Make the current year selected item in the list drpCalYear.Items.FindByValue(DateTime.Now.Year.ToString()).Selected = true; } 

You can initialize lists from Page_Load :

 protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { Populate_MonthList(); Populate_YearList(); } } 

and finally, here is the event handler for the SelectedIndexChanged event for DropDownLists , which sets the new Date :

 protected void Set_Calendar(object Sender, EventArgs e) { int year = int.Parse(drpCalYear.SelectedValue); int month = int.Parse(drpCalMonth.SelectedValue); cntCalendar.TodaysDate = new DateTime(year, month, 1); } 

[verified]

Inspired by: http://www.4guysfromrolla.com/articles/090104-1.aspx (VB)

Answer 2

Try below ...

 <asp:Calendar ID="calender1" runat="server" VisibleDate="2012-10-10"></asp:Calendar> <asp:Button ID="btnMNext" runat="server" Text="Next Month" /> <asp:Button ID="btnMPrev" runat="server" Text="Prev Month" /> <asp:Button ID="btnNextYr" runat="Server" Text="Next Year" /> <asp:Button ID="btnPrevYr" runat="server" Text="Prev Year" /> <br /> <asp:TextBox ID="txtcur" runat="server"></asp:TextBox> 

in code for

 **btnMNext_Click** String month; month = calender1.SelectMonthText(); txtcur.Text = calender1.SelectedDate.ToShortDateString(); calender1.VisibleDate = calender1.VisibleDate.AddMonths(1); **btnPrevYr_Click** calender1.VisibleDate = calender1.VisibleDate.AddYears(-1); **btnNextYr_Click** calender1.VisibleDate = calender1.VisibleDate.AddYears(1); End Sub **btnMPrev_Click** calender1.VisibleDate = calender1.VisibleDate.AddMonths(-1);