|
I try to write down a DataSet to XML.
In my dataset I have a row named fe_date (datetime) that sometimes is NULL.
When i write the XML file it skips that row if it have a NULL value. How can I force the writer to write the element for fe_date even if it doesn't have a value?
I've tried to use myDataSet.WriteXML() and with XmlSerializer() both with the same result.
|
|
|
|
|
I've never had to do this, but off the top of my head, it would probably require you supply custom serializer code in your object class to support this. Possibly adding an attribute to the tag. This same code would also supply the ability to interpret the XML and convert it back to an object.
Take a look at this[^] for the idea. AFAIK, there is no way to tell the standard serializer to output empty tags. NULL is not really defined in XML, so it's no surprise that it won't output an empty tag set.
|
|
|
|
|
Dear All
I have to Display Current temperature on the intranet just like a TV.
How can I Do It.If I am connected to internet is it possible in vb 6.0?
it is very urgent ?Can anybody help me?
Raghvendra kumar roy
Raghvendra Kumar Roy
|
|
|
|
|
wow - well, think about this. What do you need, to show the temperature in your office ? you need - a THERMOMETER. Yes, no web service in Timbuktu can give you the temperature where you are, you need to find a thermometer that feeds the temperature to a PC.
Raghvendra Kumar Roy wrote: If I am connected to internet is it possible in vb 6.0?
Evreything is possible in VB6 - just get C++ to do the real work, and use COM to get the values across to VB.
Why are you stuck with VB6 ? It's been unsupported for some time now.
Christian Graus - Microsoft MVP - C++
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )
|
|
|
|
|
Raghvendra Kumar Roy wrote: Display Current temperature on the intranet just like a TV.
... and all these years i thought thermometers displayed temperatures! 
regards
|
|
|
|
|
Raghvendra Kumar Roy wrote: it is very urgent
And how is this little project that damn "Urgent"?
|
|
|
|
|
I want to cache event enter when point being in datagrid cell .How have I ?
Khi chot yeu mot bong hinh ao anh
Anh biet tinh trao gio trao may
Gio cu cuon may bay vo dinh
Nhung kiep nay mai mai chi yeu em
|
|
|
|
|
Your question is not that clear but if I have understood you correctly, you should in the KeyPress event of the datagrid, check if the pressed key is enter (ascii code 13) and then use the value of the selected cell of datagrid to do whatever you like!
|
|
|
|
|
so dear amiry this could not work
user may come inside a cell after mouse click
A.E.K
|
|
|
|
|
Hi, I have developer an application to import data from the other database file into my database application. I designed a form with a progress bar to let the user know the progress of importing the data. I set the form border style to none mean the form will have no title bar. Everything working fine but one thing that I need to change is when I hide the form title bar, the form will become flat. What I need is making the form 3d (with border) but no title bar. We can see when we install printer drive, we usally found a 3d form with no title bar display the progress of driver installation. This is what I need. I used vb.net 2005 standard edition and if anyone know how to do that please let me know.
Best Regard,
Kanel
|
|
|
|
|
You could fake it by putting a panel control on your form, set its BorderStyle property to 3d, and dock it in the middle of the form. Then set the form's FormBorderStyle property to none.
Johan
My advice is free, and you may get what you paid for.
|
|
|
|
|
I was wondering if it is possible to detect any application such as Microsoft Word or Paint when it is trying to start up. I want the program I'm putting together to detect any program not just a specific one. I would greatly appreciate any help here, because I have been searching the internet for weeks with no results to show for it. I've posted here as a last resort to see if there is something I may not know about or may have overlooked. I just need to know how this can be done, if it can be done, I don't need to be shown, but thanks anyway. If I could get a reply that would be great as this is for my senior project that will be due near the end of the 2007-2008 school year.
I thank anyone who reads this in advance for at least taking the time to read this in the event they could possibly help.
|
|
|
|
|
As far as I know it is more or less possible, meaning that you can detect whether a certain application is running. If you just check frequently enough it will work just as well as catching its starting event. (I am not saying that it isn't possible to catch that somehow, but I just don't know how)
You are going to have to look into checking for processes and their windows' handles, class names and such.
Good luck,
Johan
My advice is free, and you may get what you paid for.
|
|
|
|
|
Ok, I figured this one out myself with a little more digging. Processes can be detected through a ManagementEventWatcher. I hope this will help anyone with the same problem...
|
|
|
|
|
Does anyone can make mobile application in VB.NET 2005, if possible tell me, please
Socheat
|
|
|
|
|
The book that I plan to give to you also contain a chapter which telling you on how to build an application for mobile device. if you really want to know more about mobil application, you can purchase these book[^] to read.
Hope to see you soon!!!
Kanel
|
|
|
|
|
Thanks
see you soon.
Socheat
|
|
|
|
|
Hi,
I'm currently writing a program where I need to open a new form when I press a command button. I have no clue how to do this. Can anyone help?
Thanks,
Craig
|
|
|
|
|
I recommend buying a book on VB.NET and working through it. To create a new form, just create an instance of it's class, and call ShowDialog() on it. But, as I said, if you didn't know this, you'd probably benefit from buying a book.
Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )
|
|
|
|
|
dim newform as new yourForm()
newform.show() 'or newform.showdialog()
'newform is the variable name of the original form
'yourForm is the name of the form that you want to show...
'its just something like making an instance of an object.
|
|
|
|
|
hello netvistal
just try the following
demoform.show() OR demoform.showdialog()
show() method display a modelless dialog and ShowDialog
() displays model dialog box
regards,
koolprasad2003
If the message is useful for U then please Rate This message...
Be a good listener...Because Opprtunity knoughts softly...N-Joy
|
|
|
|
|
i have a string format "18:15:15"(fetch from a dataset)
i want to convert it to time format.. but i cant... ive tried to concatinate the time to "1/1/1900 "&"18:15:15", and convert it using the ff:
assume that datevalue = "1/1/1900 "&"18:15:15"
Convert.ToDateTime(datevalue)
ctype(datevalue,datetime)
date.parse(datevalue)
but still im recieving an error message :
String is not recognized as a valid datetime... please help me...
i am using vb.net 2002 and im fetching data from mssql 200
tnx in advance!!!
|
|
|
|
|
Why are you storing the times as strings in SQL Server ? Seems to me that you can just call the split method on your string, and use int.tryparse to get out the hours, minutes, seconds.
Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )
|
|
|
|
|
date.parse("18:15:15") worked for me but I'm using VS 2005. If that really won't work you might try Date.ParseExact if that's available to you. It would look something like this.
Dim t As Date = Date.ParseExact("18:15:15", "HH:mm:ss", Globalization.DateTimeFormatInfo.InvariantInfo)If that fails you could fall back to the split function which has already been suggested.
|
|
|
|
|
it still doesnt work...
maybe i havent supplied you an enough information...
here's my code... please help me...
Private ds_schedule As New DataSet()
Dim strSQL As String
Dim Connect As New SqlConnection(ConnectionString)
strSQL = "select t.tload_id,t.date_value,convert(char(10),t.start_time,14) start_time,convert(char(10),t.end_time,8) end_time,upper(r.last_name)+', '+r.first_name teacher_name,secondary_teacher_id,datediff(hh,t.start_time,t.end_time)*t.rate totla_rate,t.remarks FROM dbo.ttcpCustomizedSchedule t left outer join dbo.ResourcePersons r on r.teacher_id=t.teacher_id where t.tload_id = " & tload_id.ToString & "order by date_value"
Dim data_adapter As SqlDataAdapter
data_adapter = New SqlDataAdapter(strSQL, Connect)
data_adapter.TableMappings.Add("Table", "ttcpcustomizedschedule")
data_adapter.Fill(ds_schedule)
dtgCustomSched.SetDataBinding(ds_schedule, "ttcpcustomizedschedule")
Dim dateValue As Date
Dim startdate As Date
Dim enddate As Date
row = dtgCustomSched.CurrentRowIndex
dateValue = dtgCustomSched.Item(row, 1)
startdate = Date.ParseExact(dtgCustomSched.Item(row, 2), "HH:mm:ss", Globalization.DateTimeFormatInfo.InvariantInfo)
enddate = Date.ParseExact(dtgCustomSched.Item(row, 3), "HH:mm:ss", Globalization.DateTimeFormatInfo.InvariantInfo)
ConnectionString==my connection that is working properly
dtgCustomSched==the name of my datagrid
ds_schedule==the name of my dataset
dbo.ttcpCustomizedSchedule = table name
i think ther must be something wrong with the interaction of the dataset,datgrid,and data adapter... but i dont know what it is...
thanx!
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
