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Hello,
I am stumped by this.
csng("1422.843197465627") returns
1422.84314
and NOT 1422.8432 or even 1422.84319
even CType( "1422.843197465627", Single) also return the same value.
Can somebody explain this to me?
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Are you sure? On my computer, it returns 1422.843, not .84314.
You're converting to a single-precision floating point number[^]. The documentation is quite clear: Quote: A Single value has up to 7 decimal digits of precision, although a maximum of 9 digits is maintained internally.
If you want more precision, use a double precision floating point number[^] instead, which supports up to 17 digits.
But be aware that neither type can guarantee to precisely represent every decimal number you throw at it. For example, 0.1 doesn't have a precise binary representation.
"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer
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I've created a custom tooltip control using a UserControl as the base. When dragging the
control from the toolbox to the form it displays the control (of course) but I want it to
be added like a ToolTip when it is dragged to the form; as an object displayed below the form
in the designer. I've been searching for an answer but I'm not even sure what question to
search for. Can someone help?
Thanks
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Inheriting from UserControl was the wrong route to take. In order for it to show up below the form in the designer, you inherit from Component, not UserControl.
ToolTip is not a normal control. It's an extender that modifies other controls. It adds functionality to anything that inherits from System.Windows.Forms.Control.
The standard ToolTip class inherits from Component and implements the IExtenderProvider interface. You can see the source for ToolTip here[^].
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 Thanks a lot for the information and link. I will try that road instead.
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My teacher gave us an assignment to link two forms together where one form is an admin form where u can put things and delete things together and another form is an user form where they can only view it. My question is I want to do a video input format and I can only embed my videos on form 1 but it wont show on form 2 can anyone please help.
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Tell your teacher that forms aren't linked, but created and opened.
Lost wrote: My question is I want to do a video input format and I can only embed my videos on form 1 but it wont show on form 2 can anyone please help.
Show us your code
Bastard Programmer from Hell 
If you can't read my code, try converting it here[^]
"If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.
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Hello !
I'm using entity framework 6 and vb.net 2017.
I have a situation where I read some data from database :
Dim lst as ienumerable(of Mytable1)
lst=context.mytable1.where(Function(t2) t2.nr1=1).Tolist After that , I've made some modifications on some items on the collection , and after that i want to remove from the collection the items that have vl1=0. (But of course I want to do that only on local data that is read before from database and nothing will be saved on database )
How can I do that ?
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I'm sorry to bug people about this but I'm still having a slight problem with a Database programming question with Visual Basic 6/Net. I took the advice of someone else on this message board (thanks) about instead of using a combo box as a control but use a simple textbox/command button to control a database pointer in a database program that controls what table to use within the database. Here is the following code I'm using now...
Private Sub cmdSelectedLeagueGameBack_Click()
Dim DataPointerIndicator As Integer
Dim DataIndexNumber As Integer
DataPointerIndicator = DataPointerIndicator - 1
If DataPointerIndicator <= 0 Then DataPointerIndicator = 1
Select Case DataPointerIndicator
Case Is = 0: DataIndexNumber = 0
Case Is = 1: DataIndexNumber = 1
Case Is = 2: DataIndexNumber = 2
End Select
Data1.RecordSource = DataIndexNumber
Text1.Text = Data1.RecordSource
End Sub
The problem I'm having is that I can't figure out how to use the "DataIndexNumber" varible to connect to the "Text1.Text = Data1.RecordSource" so that I can display each table within the Connected Database. The table display properly within the Text1 Object, but I have no idea how to make a "Pointer" within the Database and how to control the "Pointer".
Any help would be most appreciated.
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You use the index value to select the appropriate table. But a much easier method would be a ListBox with the table names, so the user could select the name, and you then have the exact value necessary.
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Yes, I was trying to use an varible to "control" a pointer (which I haven't figured out how to create yet) much like the Index value you described but I can't seem to come up with anything with the previous code. I'm kinda stumped.
A listbox sounds like a good idea, but how do I display the individual tables within the Listbox? Do you have an example I could use for this?
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I am not sure exactly what you are trying to do. Are you trying to display the content of the tables, or just their names? If the former then there are plenty of articles that explain how to bind between different view types and a database. If the latter then you just need to get the names from the database and add them one by one to the listview, or use simple databinding.
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What I'm trying to do is build a simple utility that inputs data from a sporting event into individual tables within a database. Each table represents a sporting event with recorded stats. I have linked the database to the utility porperly with the code I listed before, but I can't seem to figure out how to build a pointer to input the data from each game into a particular table. Switching from table to table in the database is inportant in this utility, but I just can't figure out how to control the pointer in the database with a simple command button and a textbox to display the selected table.
any info would be most appreciated.
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What you describe indicates a terrible database design - changing tables for different events/sports is a disaster (which you are finding)
Take a look at this database design[^] and consider starting from scratch with a better data structure.
Never underestimate the power of human stupidity
RAH
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Terrible Database Design? Whats wrong changing from one table to another?
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Did you look at the design patterns in the link?
What happens when you have a new event/sport, you have to build another table, add code to service the table, EVERY time there is a new requirement.
If you designed your database properly you would have a EventType table with a foreign key to an event table. To add a new event you would create a new RECORD in the EventType table. The user can do this and you don't need to create a new table.
Look at the templates and read up on database design, you cannot become a LOB developer without a reasonable knowledge of database design.
Never underestimate the power of human stupidity
RAH
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D. Doulas wrote: Visual Basic 6/Net
VB6 and VB.NET are two completely different languages. They share some similarities in syntax, but for the most part, code for one will not work in the other.
You need to decide which one you're using before asking for help with your code. Unless you're maintaining a legacy VB6 application, I'd strongly recommend picking .NET, since VB6 has been dead for over 15 years now.
"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer
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I see. Thanks for the tip. I have VB.net, but I'm still learning the "In's-n-out's" of VB6. But I may try VB.net sometime.
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Don't bother with VB6. You're going to have unlearn stuff to apply the same concepts in VB.NET.
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D. Doulas wrote: I'm still learning the "In's-n-out's" of VB6
STOP you are completely wasting your time, not only that but you will learn the WRONG thing. Delete VB6 from your system and concentrate on VB.Net.
Never underestimate the power of human stupidity
RAH
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D. Doulas wrote: I'm still learning the "In's-n-out's" of VB6
No developer writes code in VB6 for any client, paid or unpaid, because it is a dead and unsupported language, and the compiler isn't for sale anymore. If it was, there wouldn't be an OS that still supports the compiler.
From an ethical point, one cannot support VB6 code in any other way than a rewrite.
Bastard Programmer from Hell
If you can't read my code, try converting it here[^]
"If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.
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Hi guys,
I would like to know how to Read Multiple text file from a folder and count specific words from those text files ( using a button command )
Example:
Read DM01 ( not only DM01 , Sm05 too ) from all text files in a specific folder and output to a textbox in my program ( and add an exception which will count even if it lowercased or uppercased )
Example of text file: ( if ur wondering the DM01 and SM05 is always on the same line of each text document in the folder )
Im using visual studio 2017
https:
Need only the count value on the textbox like
Example : 2 ( is the count value output it to textbox )
Please note that the files format cannot be changed to any other format other than .txt)
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So, a button-click, then loop through some text-files, and count the words in the string that you read said textfile to?
What part are you stuck? What have you tried?
Bastard Programmer from Hell
If you can't read my code, try converting it here[^]
"If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.
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