So, I am using the datetimepicker by eonasdan. Everything appears to work fine except one field.
The field in question clears the input box that the date is in. Why does it not stay there?
I have tried the options defaultDate and useCurrent, but nothing seems to make a difference.
Here a sceenshot of my form:
Related
This seemed to be working but just stopped and I'm not sure what I changed to cause this.
I have a listbox on a form. (a single select listbox).
To extract the value, I can do me.listboxName.Column(0) and that works perfectly.
However, that's not the code I want to use. (as I will reference it from another form )
Form_myformName.listboxName.Column(0)
is what I had, and it worked and now it's stopped. It still works for similar code on other forms, so I'm not sure what's happened.
If I type in me.name, it tells me correctly that my form name is "myFormName".
If I type in Form_myFormName., it prompts me with the name of my list box so I know I have the names correct. However, if I try to extract the value using:
Form_myformName.listboxName.Column(0)
it gives me a value of Null, despite the listbox having a selected value. (which I can sucessfully extract by using me.listboxname etc)
hopefully that makes sense. anyone know what I'm doing wrong?
Try it this way:
Forms("myformname").listboxName.Column(0)
I hope that helps.
Ok, so I'm experiencing some strange behavior in datetimepicker fields in my program. I use Short format usually, and use a pair of them for date range selections.
The problem i'm experiencing is if a user is using the keyboard for input. they can tab and arrow through the field like normal to key in a date. However if the date part they are entering doesn't fill it's section of the mask and then they press enter to activate the formdefault without shifting focus away from that portion of the date, then the value of the DTP when the ok_button.click event is run is whatever value it had in it BEFORE they typed their change.
to give a specific example:
A user tabs into the date field. the default date in the field is today's date, 4/14/2015. They type in 1, arrow to the day, put in 1, then arrow to the year and type 14, then press enter. The reported value of the DTP is going to be 1/1/2015. Had they instead actually typed out 2015, or used the arrow to move to another date part or tab to shift focus to another control, the DTP will auto update to fill in the rest of the year.
The same problem would exist if they had typed in a 1 for the month and then hit enter, but would NOT happen if they put in a 12 for the month.
The only solution I can think of, and I haven't yet tried to implement it because it sounds like a real kludge and would require me to go through at TON of forms in the project, would be to change the keypress event for enter to shift focus to the OK button, and THEN invoke the formdefault.
I will say that most of the datetimepicker fields on my forms are actually contained within a user control, so if this is a property that can be changed in the control or tied to an event in the control, it would make updating much, MUCH easier.
I am currently using Microsoft Visual Studio Express 2013 for Windows desktop with an SQL back-end. I am trying to run an SQL query that will have the date time in format "yyyy-mm-dd." My problem is I need to see all entries from that date. Currently my date time picker keeps giving me a time with my selection. I need to remove the time portion. I tried a couple of solutions from the web but when I try and display the date time picker in a message box to see what the value is it says false. I am not sure how to change the output value in the custom field to remove this. Here is my code.
This is in on my load event:
'date time picker set up
DTPPromiseDate.Format = DateTimePickerFormat.Custom
DTPPromiseDate.CustomFormat = "yyyy-MM-dd"
Then in a button click event, is a message box to display what was selected in the date time picker. I want to get my message box working correctly before I try and run SQL queries with it.
MsgBox(DTPPromiseDate.Value)
-------------------------UPDATE-----------------
This code appeared as I wanted it to but I am still trying to work it into my query.
DTPPromiseDate.Value.ToString("yyyy-MM-dd")
Apply the formatting string that you used in the picker's custom format to the message box text as well.
I am trying to fill a textbox value with the current date and I do not want the user to be able to change the date. I want to use a textbox and not a datepicker. I would like the form to load with today's date already loaded in the textbox, which I will then use in my insert query.
I want the date format of yyyy-MM-dd to be in the textbox memberregisterationdate.text. I am not sure where on my form I should put the code either.
Really stuck on this and I can't seem to find it anywhere
Thanks in advance
You have to make it Enabled = False to disable it. You can load it in Form_Load:
memberregisterationdate.Text = Date.Today.ToString("yyyy-MM-dd")
I have a datepicker in a vb.net clickonce application. I need to make sure that in order to use the application that selecting a valid date is required. Ideally, I would be able to set the value of the datepicker to null and then programatically create Try Catch logic based on datepicker1.value still being null. Unfortunately, it will not allow me to assign a null or blank value to the datepicker. I cannot create my logic based on any real values of the datepicker because who's to say the value picked is not valid. I've tried setting the value to some outrageous date that no one would pick for the application like 1/1/1970, but then the datepicker opens up at 1/1/1970 and drops that date in as soon as it gains focus. I need a way to validate whether or not someone has selected a date, but am stuck and can't find any real help online. I am not looking to set the customformat = "", so please do not respond with that solution. I need the actual value to be blank or something I can run validation against to know that the user has in fact selected a date.
Set the ShowCheckBox property to true. That will make the control look like this...
When the user selects a date, it will check the checkbox. Then when you need the value...
If datePicker.Checked Then
'user has selected a value
Else
'user has NOT selected a value
End If
Can you use the ValueChanged event to set a flag to tell you they've clicked on a date?
UPDATE
You could also use the OnClick method to set a flag to verify the user actually clicked on the DateTimePicker.