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Assuming that your using a DataAdapter object to connect to your database and that there is an insert command setup the following code should work:
Try
Dim newrow As DataRow
newrow = MyDataSet.Tables("MyTable").NewRow()
MyDataSet.Tables("MyTable").Rows.Add(newrow)
BindingContext(MyDataSet, "MyTable").Position =
BindingContext(MyDataSet, "MyTable").Count - 1
Catch ex As Exception
MsgBox(ex.Message)
End Try
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Hello all,
Doing my first application to transfer to PDA's. I've looked and looked but can't seem to figure out the 'standard' screen size for most PDA's in 'twips'. I'm not sure how big to make my forms. I realize this is a rookie question but hey, "it's my first day man". I've done the math conversion of what I believe to be screen size in inches, to pixels, to points to twips but every time I get a resultant size that looks too big.
This is one case where 'size matters'.
Thanks
Will
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Hello there
I have an Xml file and I loaded it through Dataset. Now I have almost 8 tables. in any one of those tables I want to get the data in my required order like I have One table Name "Employee" I have two Fields name
"EmployeeAddress" and "EmployeeName". the data is arranged by default according to EmployeeAddress but I need it according to Employee Name. How I can do this. when I am not Using DataGrid .... Only using text boxes and user clicks next button to get the next record.
how to put "order by" clause in the loaded dataset table
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if any one else has same problem then this is the solution
Dr = Ds.Tables("Employee").Select("","EmployeeName")
where dr = data row
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Hello,
I would be very gald,if could know the procedure or the way to extract or modify files from MFC application file(.exe)
 
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This is the VB forum, you know that right ? What do you want to do ?
Christian Graus - Microsoft MVP - C++
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Hello,
I have difficulties in using a DLL I was given. So I can't modify the code of this DLL, but I know that it works, since I tested it succesfully with a C program (with the .h and .lib files that were given with it).
My problem is I have to call it in VB .NET.
Here is the function that I have to call in the DLL:
<br />
void myfunction(<br />
long * param_one, <br />
long param_two,<br />
unsigned char * param_three,<br />
unsigned char * param_four)
Parameters 1 and 4 are outputs and parameters 2 and 3 are inputs.
And here is how I declare and call it in my VB Code:
Private Declare Sub myfunction Lib "mydll" _<br />
(ByRef param_one As Long, _<br />
ByVal param_two As Long, _<br />
ByVal param_three As String, _<br />
ByVal param_four As String)
Call myfunction(a,b,c,d)
It seems the string input (param_three) doesn't reach the DLL, which I know from the return code (param_one). I've tested with ByRefs for the strings but it doesn't work either. Maybe is it a problem with the fact that these are unsigned char * ?
I am a brand new DLL user so I may have made mistakes... If someone has an idea, I would really appreciate it.
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It depends on what the .DLL is doing with the string. If it's creating a string for return, then what you did should work. If it's expecting a string BUFFER passed in (which is what this looks like), you have to pass in a buffer for a string and not just a pointer to en empty string. The buffered version can be done with a StringBuilder instead of a String.
Private Declare Sub myFunction Lib "mydll" ( _
ByRef param_one As Long, _
ByVal param_two As Long, _
ByVal param_three As StringBuilder, _
...)
' To call the thing, create the buffer first.
Dim buffer As new StringBuilder( 512 )
myFunction( a, b, buffer, d )
You can get more information and techniques from here[^].
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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Thanks for your help.
Although I'm now using a StringBuilder, the parameter doesn't seem to get in the DLL...
I really wonder why this doesn't work 
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For all I know the type of parameters three and four (string) should be LPSTR.
void myfunction(long * param_one, long param_two,LPSTR * param_three,LPSTR * param_four)
. . . we have same problem encountered when i create a dll in VC++, and it works when I used LPSTR, u can try this.
I hope it helps
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Yes, I've already read that somewhere, but the problem is I can't modify the DLL...
Thanks anyway.
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Hi!
Is it legal to extract icons from Microsoft applications such as MS Office and XP
for use in my own application.
Theres a lot of free tools to extract these icons out there, but nobody seems to care about legal rights.
I'll be happy for a straight answer here 
Thanks in advance
bomstrong
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The icons provided with Visual studio are free to use. If you extract the icons from word or some other application, you can assume you are violating the copyright unless you have written permission from Microsoft to do so.
Absolute faith corrupts as absolutely as absolute power
Eric Hoffer
All that is necessary for the triumph of evil is that good men do nothing.
Edmund Burke
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Thanks for Your quick answar - I'll try to create my own icons instead!
Regards
bomstrong
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hi all,
searching the internet for printing/converting an Excel file into PDF let me to the following code.
<br />
Dim oXL As Excel.Application<br />
Dim oWB As Excel.Workbook<br />
Dim oSheet As Excel.Worksheet<br />
Dim oRng As Excel.Range<br />
<br />
' Start Excel and get Application object.<br />
Set oXL = CreateObject("Excel.Application")<br />
oXL.Visible = True<br />
<br />
' do other things with the oSheet object<br />
oSheet.PrintOut Copies:=1, ActivePrinter:="Adobe PDF on Ne01:"<br />
but after some error messages I discovered that on my machine the ActivePrinter:="Adobe PDF on Ne01:" should rather have Ne02 in it.
Is there a programmatic way to find/set the correct ActivePrinter property on a machine. Adding a loop for "Ne0" + i doesn't look elegant.
thanx in advance
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I use picturebox in a winform. Like this,
PictureBox1.load(strImagefile)
After testing some picture files, I found that if the imsgefile format is .ico, there will has error when you load twice the image.
Is this a bug of .net 2005 beta2?
Thanks!
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If you use the Load method of the PictureBox, this keeps the file it loads locked open.
See this[^] KB article on MSDN for more information and how to get around the situation.
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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Then, how to reload the picturebox.image?
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Reload the file, as explained in the link!
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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Hello everybody,
whenever I run any VB program (like Hello world, datepicker) which outputs message in a message box, the content is always blank, even a simple notification comes out blank, the problem is that the msgbox does appears, the string seems to have been written (the size of the msgbox changes depending on the lenght of the message) but it is not visible.
can anyone tell me why this is happening, and how to fix it
Thanks
Ignorance is darkness.
Knowledge is light.
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hi,
please put in your code here.
thanx
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Yes, I agree with Anonynous - please show us your code. In the meantime, you haven't set the text (font) colour and the background colours to be the same thus making the text effectively 'invisible'?
...Steve
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This is the code:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
MsgBox("your birthdate was " & DateTimePicker1.Text)
MsgBox("day of the year: " & _
DateTimePicker1.Value.DayOfYear.ToString())
MsgBox("Today is " & DateTimePicker1.Value.Now.ToString())
End Sub
I've checked the font color (Black) and background color (Transparent)
I've read that it might be something to do with McAfee and their buffer overflow protection. I'm trying to find a patch which McAfee has made availabel but I can't seem to find it right now, if you know the url, could you please let me know what it is?
Thanks
Ignorance is darkness.
Knowledge is light.
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I Googled "mcafee blank msgbox" and see a whole heap of hits for this problem. McAfee Viruscan 8.0 Patch 10 fixes it. I don't have a URL for the patch as I get it automatically. Try www.mcafee.com.
...Steve
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Check this:
Public Class Params
Private Shared iParam As Integer
Public Structure ParamFields
Public FieldArray() As String
Public Const Value1 As Integer = 1
Public Const Value2 As Integer = 2
End Structure
Public Function Value(ByVal sequenceID As Integer, ByVal routinID As Integer) As ParamFields
'This is where some action must be carried out before I read Value1 and Value2.
'Using a structure in this way is only way to accoumplish this I think?????
End Function
End Class
I use it like this :
------------------------------------
dim oParam as new Params
msgbox(oParam.Value(10,11).Value1)
------------------------------------
In this example Value1, Value2 is constants but they can change depening on what I pass to Value-function.
My question ... Can I retrieve Value1 by using:
-------------------------------------------------
dim oParam as new Params
msgbox(oParam.Value(10,11))
-------------------------------------------------
i.e use Value1 as default trough ToString or something else? any suggestions?
Regards // Maw
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