I haev an object with a DateTime property. I want to map the time to a textbox (thus want the user enter the time, it's directly reverberated to my property).
However I just want to display the time. How can I say this (ie the format should be something like hh:mm to be correct).
Less specifcly how can I format the text "sent" to the object and the other way too ?
Thx
You can specify "HH:mm" as the binding's FormatString
If you need more complex formatting than what a format string can provide, you can handle the Format event of the binding, which enables you to provide your own formatting logic
Related
Is there a way to modify the WPF DatePicker so that the user can enter non dates (e.g period codes such as 1Y) in addition to dates?
Basically I'm looking for a text entry field that can take any string (or optionally a string that matches a custom validation rule) that has a calendar icon next to it, which when used will paste the selected date into that text field...
I have a TextBox where the user is able to enter in their preferred date format pattern (e.g. dd/M/yyyy, yy-dd-mm).
How can I validate this Textbox? I could do it on the server-side by setting the Text property of this Textbox to cultureInfo.DateTimeFormat.ShortDatePattern and then catching the thrown exception, but I want to do this on the client-side using ASP.NET validators (a CompareValidator or RegularExpressionValidator).
This is a very difficult problem to search for as all that comes up are date format validation problems.
Hello my WinForm application has a textbox that will be used for a time value. I know how to load like the current time into the textbox, but say when a user enters a value, what is the best way to validate or format the number so I can attempt to Convert it to a TimeDate value?
Example:
User enters something like 800 should be able to be converted to 8:00am or 2354 should be 11:54pm. Also if they enter an invalid time, like 9cdf83 or something, I need to check that this value is convertable to a time. If not, throw a warning. Is there a way to display a system clock to choose the time from like the dateTimePicker?
For things like date and time which u want user to enter best is to use DateTimePicker bcoz n number of users will have n number of ideas to fill it. u can't go on checking each and every option.
Instead DateTimePicker will make user to enter through it only.
you can place the textbox and a label beside it specifying the format like 8:00 AM and for validating it you can use custom validation and use a suitable regular expression as required for the validator and attach it to textbox.
But For conversion I thing you will have to code and check its validity.
How to make that user can only input hour format in text box for example HH:MM?
Depending on strictness of requirements you may want to create a specific behaviour that will be attached to KeyDown event and disable keys other than currently accepted given format and current text input position in (HH:MM), you could even think of different ways to guarantee automatic : input by your behaviour if you want to be limited by textbox control for time input.
you can get some inspiration here I think
numeric only behaviour example
Look at Binding.StringFormat. It allows for conversion to DateTime or TimeSpan while specifying a certain string format to define how the user inputs the value, and how the value is displayed.
It sounds like you are looking for a masked text box.
You can fine one on codeplex here...
WPF Toolkit
EDIT.
There is also a datetimeupdown control. Which might be nearer to what you want.
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Possible Duplicate:
DateTimePicker: pick both date and time
I'm using a WinForm DateTime picker and it does a fantastic job of choosing dates, but I don't know how to do times. It looks like a time is associated with the value, so maybe there's a way to use this to pick a time?
If there is no built in way to do this, I'll just create another box for the time and modify the DateTime value from the DateTime picker.
Thanks!
You can use the built in DateTime picker by adding a custom format string as follows:
DateTimePicker.ShowUpDown = true;
DateTimePicker.CustomFormat = "hh:mm";
DateTimePicker.Format = System.Windows.Forms.DateTimePickerFormat.Custom;
Enjoy!
You can either choose the datepicker to have a "long" date, even only "time" or you can create your custom date.
I always use this format, as it's the most easy one to understand for users (IMHO): yyyy.MM.dd HH:mm
This can be done in the designer the fastest, just change the property.
Or, change it in the program with
YourDatePicker.Format = DateTimePickerFormat.Custom;
YourDatePicker.CustomFormat = "yyyy.MM.dd HH:mm";
The DateTimePicker works pretty much like how setting the Windows clock works. If you set the ShowUpDown property to true, it displays a spin control to the right of the DateTimePicker. If you then click on a section of the control, such as the time in hours, and then hit the up or down arrow of the spin control, it will change the time in hours.
Also, if you want to use a custom DateTime format, change the Format property to Custom and set the flags you'd like. For example, MM dddd yyyy HH:mm:ss. For an explanation of all the custom format specifiers, here's the full list of them from MSDN.
Hope that helps.