|
Keep follow-ups in the same thread, don't post them as new threads too.
---
b { font-weight: normal; }
|
|
|
|
|
in the iconPath field which is found in ythr database.. the path of the image is sotred.. if there is no image path..i/ll display a message no image..
thts why i want to knw.. the syntax to know if my field is empty
Thx
Arshaad
|
|
|
|
|
hi!
I'm doing a project in image processing. I have implemented sobel edge detection.But the edge is not thin.
I tried to implement canny edge detection. But I don't understand how to do non maximum suppression.If anyone has canny edge detection implemented in vb.net please please share it.
signing off is preci
|
|
|
|
|
I don't have that code, but a number of edge detection methods are covered in my image processing articles, which are in C# ( on this site ).
Christian Graus - Microsoft MVP - C++
|
|
|
|
|
Hello Every body, i have a .swf file its an intro for my application and on loading the application i want it to start.
Any help is appreciated ....... VB.net
I tried to Add the Interop.ShockwaveFlashObjects referrence, but still not workin, they told i have to add AxInterop.ShockwaveFlashObjects but i couldnt found it.
So id like a soultion, and step by step plz.
-- modified at 13:24 Wednesday 29th March, 2006
|
|
|
|
|
the easyest way of doing it is adding a webpage object. create a simple html page that loads the swf and then load the html page into the webpage object.
in vb6 it used to be webpage object.navigate(Path) not sure about .net
|
|
|
|
|
Any way thanks HaloZa, but i couldnt find such webpage object, any way to do it ????
thanks again for ur try.
|
|
|
|
|
|
hi,
i a have a field in a database from i retrieve data by a recordset.. now if the field is empty i want to display a message .. how i can do tht thx..
e.g DIM imgPath
If imgRecorset.......= empty Then // this part i want ot knw
Msgbox(This filed is empty)
Else
imgPath=imgRecorset.fields("filedname")
End if
THx
Arshaad
|
|
|
|
|
If imgRecroset.field IS NULL Then
msgbox ("Pherr Liyaa Chore Noo")
Else
...
...
...
End Less Loop
|
|
|
|
|
If mcqRecordset.Fields("iconPath") Is Null Then
imgMCQ.Enabled = False
Else
imgMCQ = LoadPicture(mcqRecordset.Fields("iconPath"))
End If
Object not found... error
plz help me thx
|
|
|
|
|
What object is it that isn't found? The recordset? A field in the recordset? The image file?
---
b { font-weight: normal; }
|
|
|
|
|
IF some field of a table IS NULL WHERE PRIMARY-KEY of table is EQUAL TO xyz THEN
//code to execute
//...
//...
Else
//...
//...
END IF
End Less Loop
|
|
|
|
|
Yeah my Primary key is McqID.. and i have amny mcqID.. so any of them may not contain the an image path.. how would i know which image apth is null
|
|
|
|
|
SELECT * FROM TABLE_NAME WHERE ICON_FIELD IS NULL
Change table name and icon field name with appropriate names, your record source will contain now only those fields from table which contain no data. Once this phase is complete update each field accordingly.e.g:
dim fd as openfiledialog=new openfiledialog
for i=0 to recordset.recordcount -1
fd.showdialog
recordset.recordfield(i).add=fd.filename
recordset.movenext
next i
fd.dispose
End Less Loop
|
|
|
|
|
cannot bind to the new display member. Fix please
|
|
|
|
|
Seriously, how is ANYONE supposed to answer such a vague question?
Use some common sense!!
|
|
|
|
|
Apologies, but i am a student and that is the error message i am receiving
in this particular application. The only additional info is (parameter name = newdisplay member.
Rgds DaveChef
|
|
|
|
|
Hello,
I have a basic question regarding 'New' keyword.
For instance I can declare a variable as string (class)
as Dim myName as String = String.Empty
or Dim I as Integer
But when I want declare a button we instantiate it as
Dim b as Button = New Button
I am just trying to understand when (for what kind of classes) to use New key word.
Please some one help to clarify this.
Thanks
-L
|
|
|
|
|
simple answer - always! To instantiate an object you ALWAYS have to use the New operator.
String.Empty is a static instance of the String class - so it has already been instantiated.
dim i an Integer = 1
this is a special case for primitive datatypes, you can get similar functionality for your classes using implicit casting, allowing such code as
Dim myPerson As Person = "Jamie"
but this would, under the hood be doing,
Dim myPerson as Person = new Person("Jamie");
|
|
|
|
|
I am kind of unclear on this yet.
I have just typed
Dim myName as string = New String
and there is a blue line under New String and the tool tip said
"Overload resolution failed because no accessible 'New'accpets this number of arguments"
But when I said
Dim b as Button = New Button
Could you please explain it one more time.
thanks
-L
|
|
|
|
|
Remember that string is a really special case, it is immutable - which I wont go into here but look it up if you are interested.
To add to what I wrote above, The only time where you CANT use the new operator is when there is no public constructor defined on the class, so you cant instantiate a new instance of it, so there is no need to ever write New MyObjectWithNoPublicCtor()
Going back to string, this is the case - String class in .NET does not define any publicly accessible constructor.
|
|
|
|
|
Now its clear  hey thank you once again.
-L
|
|
|
|
|
no problem buddy, as i found out by answering you - the answer is not quite as straightforward as i first thought 
|
|
|
|
|
Try this:
Dim myName as String = New String("Gotcha")
MsgBox ("WoW No OverLoad Resolution Failed Error")
MsgBox ("Yeah Yeah Because You Did Provide Argument " & myName & " with NEW")
--------
End Less Loop
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
