I have a datagridview with 10 columns. Every month the user will update new info in the grid. I would like to have a datetimepicker next to the binding navigator. The purpose of the datetimepicker is to scroll forward or backward month by month. If scrolling forward the datagridview creates a new datagridview with the same 10 columns populated with certain data. Then the user can just add the necessary data for the new month. if the user scrolls backward a month, the datagridview shows past gridviews and columns the user has already updated in the past. This is sort of a hybrid of a datagridview and a monthly calendar sort of thing. I've looked everywhere and cannot find any ideas on how to add this datetimepicker control with functionality.
Any idea would be really helpful.
Use the OnValueChanged for the DateTimePicker to update the Filter on the BindingSource.
The DateTimePicker has an event that signifies when it's value has changed, you want to hook into that.
Once that event has fired you want to take the value of the DateTimePicker, and set the filter on the binding source to something like, "Date = '" + datePicker.toShortDateString() + "'"
This binding source should control what your datagridview displays.
Related
I am writing an application which updates the date selected in RadCalender to a database column on click of a button.
After the button is clicked, i want to clear the selected date so that the end user selects a date before clicking the button again
I have tired using the below code, but it dosen't appear to work
calExpirydate.SelectedDates.Clear();
You can use the following script:
var selectedDates = get_selectedDates(); //Gets the "list" of selected dates
unselectDates(selectedDates); // unselects all dates that may have been selected.
Code taken from: Telerik Reset Calendar Selected Date
----------------------------
radCal1.RemoveFocusedDate(true); //Will remove the calendar date currently selected.
I have a form with two data-bound text boxes, one data-bound DateTimePicker and a BindingNavigator. I bind these components at run-time to the relevant data sources (the 'Text' and 'Value' of the Text Boxes and DateTimePicker respectfully are bound the relevant fields in a data set). All the components display the present records correctly. Normally, when one clicks the "Add New Item" button on the navigator, all the Text Boxes will clear in preparation for the new entry. However, I have the problem that this does not occur when the DateTimePicker is bound, and furthermore any attempts to update the datasets do not occur correctly. If I neglect to bind the DateTimePicker then all works as expected. What is the cause of this behaviour and is there a way around it?
The DateTimePicker doesn't support binding to nullable data. When you add a new row, the value for that field will be DBNull.Value by default and that cannot be converted successfully to a value that can be assigned to the Value property of the DateTimePicker, which is type DateTime. You need to either extend the DateTimePicker and add a new property that supports both DateTime values and DBNull objects and bind that or else set the DefaultValue property of your DataColumn so that there will always be a DateTime to display in the DateTimePicker.
This problem was resolved for my scenario by simply controlling the addrow method of the binding source based on this site: http://www.vbforums.com/showthread.php?645401-RESOLVED-datetimepicker-with-binding-source
Add a new button on the binding navigator (to use as your 'Add') and remove the old one.
Connect to the click event and set the datetime of the new row being added:
DataRowView row = (DataRowView)bs_.AddNew();
row["dbDateTime"] = DateTime.Now;
where dbDateTime is your database field.
Although you may have to add some more code to the click event, such as moving to the newly added row on the datagrid, this option was by far the easiest to implement.
Im writing a hotel booking system with VS2012 which uses ms sql and in the booking i have two datetimepicker controls. When i select a date in the first one the date automatically gets transfered to the second datetimepicker. I now want when the user opens up the second datetimepicker not being able to select a date that is before the first date from the first datetimepicker. I dont want to use if method displaying a message i just want the dates to be "greyed" out.
Is that possible and how?
*edit (screenshot of how i would like it to be viewed or similar http://i43.tinypic.com/2zpimvs.jpg )
*edit2: its not the control(dateTimePicker2) it self i want to grey out, its the dates inside it that is smaller then the date selected in dateTimePicker1. The screenshot provided is in the area of what im looking for.
You could try this:
DateTimePicker2.MinValue = Convert.toDateTime(DateTimePicker1.SelectedDate);
EDIT
Standard controls don't support the grey-out of a datetimepicker. If you want to do this, you need to subclass the datetimepicker or look at a premade control like a DateEdit from devexpress (i think they even have free controls).
Change the second datepicker MinDate to first DatePicker selected date .. like below ..
rdpDatePicker2.MinDate = rdpDatePicker1.SelectedDate.Value;
I have gone through many articles but everyone redirects to
How to: Host Controls in Windows Forms DataGridView Cells.
But the problem lies here is that I dont want to add new column to my DataGridView which the article says to do it.I am having a DataGridView which is filled through the DataSource property of Grid.The data is coming from the database and filling the Dataset which indirectly fills the DataGridView.
So would like to ask how to add datetimepicker to my existing column of datagrid using the above article.So far I have created three classes namely CalendarColumn.cs, CalendarCells.cs and CalendarEditingControl.cs.
Also would like to ask about the NULL values the column has.Will the Null values will be handled by the classes or do we have to add some code?
The Output m getting is something like this---
and I want that extra column(Unnamed) not to appear in the Grid and show only the DateOfBirth column with DTP control as shown below--
Any links or articles would be appreciated.
Thanks in advance.
Take a look at this article, I hope it will be useful: DataGridViewExtension.
is there any way to merge cells in a datagrid view or atleast can we show on the screen like some columns in the grid belongs to one group.
for example ill take three columns:
column1: year field(a drop down type)
column2: month field(a drop down type)
column3: date field(a drop down type)
all these three should be grouped to dateofbirth cell.
or is there any way to embed calendar component in the cell.. just like in some sites when we book some tickets we click on calendar icon & click the date and it will be captured in the corresponding field..
any ideas?
You can create your own DataGridViewCalendarColumn by inheriting from DataGridViewColumn, and a DataGridViewCalendarCell by inheriting from DataGridViewCell or DataGridViewTextBoxCell.
This isn't something I've done myself, but there are loads of tutorials online explaining how to create custom DataGridView columns. A google search may help.
what i have done for this is as follows:
i have taken a date time picker obj,which will be in invisible mode initially.
when i focus on the date of birth cell ,then date time picker will invoke(in a dialog) and will be visible for this focus time.
after selecting the date,the value will be inserted into the current cell.
if the focus is on the next rows and the corresponding cell then once again we follow the above step.