We Keep Coding

Setting Minimum Date for Date Time Picker for Windows Forms C#

I'm currently working on a To-Do list Windows Forms application in C# which features a date time Picker, through some research I was able to find that I am able to set the MinValue property of the date time picker within the Designer Tab of the form.
The plan was to set the minimum date value for the date time picker through the following code:
this.startDatePicker.MinDate = System.DateTime.Now;
this.startDatePicker.Value = System.DateTime.Now;
This isn't an issue, this code is fine and it works. It successfully sets the minimum value for the date time picker to today, essentially preventing the user from choosing a date before this date.
HOWEVER, my issue is that for some reason the Designer Tab decides to reset this and automatically remove this code.
I was just wondering if there was a way I could prevent the Designer Tab from changing the minimum value for the date time picker?

Are you modifying the .Designer.cs file? It's autogenerated and all your changes will be lost. You're not supposed to edit it manually.
Just move those lines into the form constructor for the same effect, right after the call to InitializeComponent().

asp.net table like calendar control

I'm looking for a calendar control, which can show current month and 2 months a head.
The output format, should be like a table/excel document.
Here's an example (only showing the top of the calendar):
I need to be able to add events, to a specific date on the calendar.

You could use something like Full Calander and just display a calender for each month arshaw.com/fullcalendar

You won't find exact same structure or code, you will need to manipulate some existing plugins or code, or create a one from scratch.
Try this
http://www.timeanddate.com/calendar/custommenu.html

Is there a c# calendar control that can show free / busy information by default?

I am writing a c# web app which has a booking system incorporated. I have a requirement for a calendar control so that people can make a booking on a particular date.
What I need to be able to do is only allow "available" dates to be selectable. Is there a calendar control you can somehow bind to a datasource so you can return whether that date is currently available?
I can probably write something myself to do this, but don't want to waste time if there are tools / controls already out there.

I don't know whether you just wanna mark the dates or disable them, but WPF DatePicker has DisplayDateStart, DisplayDateEnd and BlackoutDates property. It is just a question of styles how do you show / display them. Ofcourse in case of BlackoutDates, they are not selectable.
More info:
http://msdn.microsoft.com/en-us/library/system.windows.controls.datepicker_properties.aspx

How to change the Time of the datepicker?

Currently i developing a WPF application. My application allow user to select any date from the datepicker and data from the selected date will show up. However, user is not allow to select any specific time from the datepicker. The output from the datepicker will be something like 02-dec-2012 12:00:00 AM. The time from the datepicker will always be 12:00am. So, how can i allow user to alter the time?
I found some resource from DateTimePicker, but i looking for another solution. Any advice? Thanks

WPF DatePicker doesn't support time selection or display. It only supports Date picking.
A simple workaround is to use several TextBox controls and bind their Text property to a DateTime data source to allow the user to see and change the time.
For more information about DataBinding, please refer to http://msdn.microsoft.com/en-us/library/ms752347.aspx.
If you want to add time picking feature to DatePicker, you will need to introduce custom control.
For more information about Custom Control, please refer to http://msdn.microsoft.com/en-us/library/ms745025.aspx.
Source
you can also take a look at the following example for how to do this: Example Project

Limiting the dates within a C# win form DateTimePicker

Is it possible to limit which dates a user can select from a dateTimePicker on a C# winforms application?
The basic principle for me is this: I have a comboBox with 5 items in it, based on which item the user selects I would like to limit which dates the user can then select from, having the unavailable dates grayed out.
Is this possible?

Use the MinDate and MaxDate properties.
dateTimePicker.MinDate = DateTime.Now;
dateTimePicker.MaxDate = DateTime.Now.AddDays(15);
(render on a french Windows 7)

You can set a minimum and a maximum date for the C# WinForms DTP, so if thats what you wish to do, then you can use the MinValue and MaxValue variables. You can't pick and choose blocks of dates that are not allowed. This is something you would have to add yourself. There are 2 possible methods of doing this:
Handing the ValueChanged event, then validate the date chosen.
Inherit the DTP class and add some extra functionality in there.

The DateTimePicker control has MaxDate and MinDate properties. Set those, and you can control the range of dates that can be selected. Currently on my Windows XP with Windows Classic theme the unselectable dates do not appear grayed, but this may vary depending on operating system, theme, etc. If you absolutely must gray them, then you will have to subclass the DateTimePicker control and do the (or part of the) painting yourself.

Yes, at least MSDN says so. Refer here.

You can set up the date restrictions in the following manner
dateTimePicker1.MinDate = DateTime.Today.AddDays(-2);
dateTimePicker1.MaxDate = DateTime.Today.AddDays(2);
In these case only the 5 available dates would be selectable for the user and the rest is not available. You could set up these values in the selectedindex changed event for the combobox and restrict it on the basis of your requirement/logic.