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in Menu There is TabOrder option select that it will shows the current tab position of u r controls , u adjust the taborder position and finally execute the programme then only u r changes will be accepted. unless u execute the programme u r changes will not get effect
prabumj@gmail.com
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Hello,
VS 2005 + SQL Server 2005
I have created a PDA application that uses typed datasets. It connects to a web service that is connected to a SQL DB.
The PDA will sometimes be used offline, and the user will add, update, and delete the data on the pda. When the user goes online, how can I make the data that has been updated on the PDA be in sync when the user connects to the SQL db?
There many people using the same database concurrently.
Many thanks for any suggestions,
Steve
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You will have to write a method that checks every once and a while to see when the last sync was, and then sync again. You will probably have to create another table in your database that stores information about when different tables were last update or keep a history of the changes that have been made or something along those lines. If you can trust that the user will shut off the program before shutting of the PDA, you can do this sync check in the Load event of your first page. If you don't feel comfortable using that event, you could set up a timer control that runs every half hour or hour or whatever. Is this what you were asking?
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Hi all,
I want to enter some ids (4 or 5) into a new address group in outlook express thru VB. Can anyone help me out..??
Thnx in advance.
The name is Sandeep
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Hi guys, I'm having a pretty simple problem, but I guess I don't have the skill to solve it yet.
I've wrote a string to get information from a database and put it into a label, all of that works fine but one of the fields is an Integer, and another is a datetime, so where I'm using "+"s it gives me an error, how can I solve this?
Here is a shorted version of the line of code.
txtMenu = txtMenu + "<tr>" + "<td>" + " User's ID " + usrid + "</td>" + "<td>" + " State is " + State + "</td>" + "<td>" + " Date Opened was " + dateopen + "</td>" + "</tr>"
The HTML code is just for setting up a table, the error occurs between 'usrid' and 'dateopen', atleast, that's my best guess.
Here is the exact error I get: "Operator '+' is not defined for types 'Double' and 'Date'.".
Any suggestions would be a big help.
Thanks,
aqzman
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use '&' instead of '+'
in vb.net '+' has the math value
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Worked like a charm, I knew it was only simple.
I tried "+ & usrid & +" too, haha.
Thanks a lot for the help!
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Hello,
Their is a Traditional way, for all variable(different datatype).
i,e. Consider,
Dim str As String = "Iam a string"
Dim integ As Integer = 0
Dim da As Date = "#6/22/2007#"
Dim ss As String
ss = "'" & str & "' " & integ & " '" & da & "'"
Answer = 'Iam a string' 0 '6/22/2007'
I thing u got the answer. If hve any problem msg me friend...........
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Hi, i have a list box with some items in it. I would like to know the sample code that I could determine whether any item in the listbox is select or not?
Thank in advance
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You can try .SelectedIndex method of list box
Regards,
Nilesh
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Thank you for your reply. I will try to test it.
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Hi,
depending on ListBox.SelectionMode you can use some properties:
either SelectedItem and SelectedIndex
or SelectedItems and SelectedIndices
Luc Pattyn [Forum Guidelines] [My Articles]
this weeks tips:
- make Visual display line numbers: Tools/Options/TextEditor/...
- show exceptions with ToString() to see all information
- before you ask a question here, search CodeProject, then Google
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Thank you for your comment. But I do not want to know the selection mode. What i want is whether any item in my listbox is select or not. My list box selection mode is set to select only one item only.
Thank you for your support
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as I said it depends on the selectionmode which two of the four properties I mentioned
you should use.
Luc Pattyn [Forum Guidelines] [My Articles]
this weeks tips:
- make Visual display line numbers: Tools/Options/TextEditor/...
- show exceptions with ToString() to see all information
- before you ask a question here, search CodeProject, then Google
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if you want to know wheter or not there is a selected item:
if listbox.selecteditems.count = 0 then
'nothing is selected
else
'something is selected
end if
if you want to know wich item is selected
when there can be more than 1:
listbox.selecteditems 'contains all the selected items
when only 1 is possible:
listbox.selecteditem
if you want to know the index of the selected item
when there can be more than1:
listbox.SelectedIndices 'contains all the indeces for all the selected items
when only 1 is possible:
listbox.selectedindex
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Thank you for your detail explaination.
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hello frnd,
check listbox1.selectedItem.count > 0
regards,
koolprasad2003
Be a good listener...Because Opprtunity knoughts softly...N-Joy
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Thank you for your support.
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in a listbox if no item is selected the selectedindex = -1 so:
if me.listbox1.selectedindex = -1 then<br />
'nothing is selected<br />
end if
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Thank you, this is what I need.
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i want to create annotation (rectangle box with transparent) with selection of user mouse, like that i want to select all parts of the image and save the coordinates using picture box tool
please help
regards
sathish
-- modified at 7:06 Wednesday 8th August, 2007
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hello there
i just begun to create my control,
when i create a class project, add the references. when i write
private sub new() (and press enter)
end sub
the code looks like something like that
when i take customcontrol and do the same the code is
private sub new()
' This call is required by the Windows Form Designer.
InitializeComponent()
' Add any initialization after the InitializeComponent() call.
end sub
what m i missing in the class file
then
i give the mybase.backcolor
that will show the control's color and its fine
but now i need to draw some drawing on that "mybase" how can i do that to give my control a shape and also i need to draw an another drawing on that control that will move on to that control vertically or horizontaly.
does someone knows the documentation about that or any kind of help
thanx in advance
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you aren't missing anything in the class file
a constructor in a class file doesn't contain the initializecomponent because it has no controls to initialize
the initializecomponent in a customcontrol or windows form is located in the designer and creates,sets property's of the controls you put on to that customcontrol or windows form.
since a class doesn't contain controls it is not needed
to give you'r control a shape look into the region property
Dim arrRegion As ArrayList = 'fill array with points
If Not arrRegion.Count = 0 Then
Dim pntRegion(arrRegion.Count) As Point
pntRegion = arrRegion.ToArray(GetType(Point))
Dim c As New System.Drawing.Drawing2D.GraphicsPath
c.ClearMarkers()
c.AddCurve(pntRegion)
If Not c Is Nothing Then
Me.Region = New Region(c)
End If
End If
with this you can give you're control any shape you want
for the drawing that has to move I suggest you create a second customcontrol (with its region adjusted) place it on you'r first and adjust the position when needed
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can u tell me something about
Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
end sub
or
Protected Overloads Overrides Sub OnPaint(ByVal e As PaintEventArgs) MyBase.OnPaint(e)
end sub
what should i use in my program
both gives an error when i use them in class file
both gives no error when i use them in customcontrol file
where should i write the code, in my function or the one of them as on up
thnx
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well if you want to set the region of the control you can do that in the load of the control
if you want to draw something on the control (using the graphics) you should be able to use
Protected Overloads Overrides Sub OnPaint(ByVal e As PaintEventArgs)
'you're code comes here
MyBase.OnPaint(e)
End Sub
or for a custom control
Private Sub ctrlLineHorizontal_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles Me.Paint
End Sub
keep in mind that the code you place inside the paint methode/event will me run everytime you're control repaints and this happens when you
move the control (at run time) (or parent control/form)
when another window is placed on top of it and then you return to the control
when you resise the control (or parent control/form)
so it would be wise to keep the code inside the paint methode/event to an absolute minimum
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