VS 2010 Copying Db Fields To Variables?
Apr 5, 2011
I have been using VB a fair bit in the past developing a Access Database, recently I wanted to give my front end interface a bit more power so I have started learning VS 2010.
Anyways, I am still using Access for my databases and i am having a bit of trouble working with the data in VS 2010, what i would like is the following:
A way to form a string or integer from a SQL query (from a single field or multiple on that row) assuming the query will always return one row.
Then a way to write string or integer variables back in to db fields.
example:
Dim cn As New OleDb.OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|ItemRegisterDB.mdb")
Dim cmd As New OleDb.OleDbCommand With {.Connection = cn, .CommandText = "select * from tblItemregister where ItemID = 1"}
[Code]....
Example = ??? 'What would i need here to copy fields from that row to string?
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Jan 2, 2012
I'm writing a new app and copying/pasting some lines from another one. In the new app, I get error when I use variables defined as public.
[Code]....
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Oct 18, 2011
I have a bunch of private variables I've typed out and I want to put all of my corresponding Public ReadOnly Properties in a bunch below them.Is there some way of copying ten lines of
Private _myVar As String
and pasting in ten sets of
Public Readonly Property MyVar As String
Get
Return _myVar[code]....
I'm currently copying the whole bunch of variable declarations, Find+Replacing Private _ into Public ReadOnly Property then going line-by-line expanding the definitions and writing return statements.how to avoid all this nonsense in the future, as I'm developing on a virtual terminal server, and the input lag on my little copy/paste/type operations on the code is driving me up the wall.
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Apr 18, 2012
I am wondering if you have a class and in the class you have a function which executes a sqlcommand. Which would u use ? the local variable declaration or the private member command variable.Assuming that the class has a private field called m_Cmd as OracleCommand..i am using oracle db so i use oraclecommand , if sql server then it should be sqlCommand.[code]
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Jun 20, 2011
I'm facing a problem with my current member card reader development.
I'm reading the card number (just a serial number of 4 digits) with a card reader. this seems to work fine (even converting the text string to integers).
This number is then put in a query to find the exact record that corresponds with this number
Me.JSM_LedenTableAdapter.GetDataByKaartnummer(IntCardNr)
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Jan 23, 2010
I need to get data from reports fields to open others windows forms or other reports, How I can get the values of reports fields to pass to local C# o VB.net variables? After many time ... With this upgrade making click on any Textobject on the Report the ClickPage event fire and in that sub is possible to get the Textobject data. You have to upgrade to Crystal Report 2008 SP 3.6, Link below [URL]
Private Sub crViewer_ClickPage(ByVal sender As Object, ByVal e As CrystalDecisions.Windows.Forms.PageMouseEventArgs) Handles crViewer.ClickPage
If Not IsNothing(e.ObjectInfo.Text) Then
Clipboard.Clear()
Clipboard.SetText(e.ObjectInfo.Text)
Me.CallBackForm(e.ObjectInfo.Name.ToUpper.Trim, e.ObjectInfo.Text)
End If
End Sub
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Apr 22, 2009
I have a copying error with my program. I am trying to copy the internet cache folder, and the error states that some files cannont be copied (read only maybe?) How can i make it copy, or just skip the uncopyable files?
My.Computer.FileSystem.CopyDirectory(Environment.GetFolderPath(Environment.SpecialFolder.Internet Cache), "d:My Documents")
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Feb 21, 2012
I have an array of the following structure:
<Serializable()> Public Structure Piece
Dim id As Integer
Dim pos As Point
[code]....
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Jul 16, 2011
on my form i have a button and five textboxes... when i click the button it takes me to a website. on this website is a list of five items. i want to take these five items and place them in the 5 textboxes. up to now what i have been doing is highlighting the first item in the list on the website, right clicking and using the copy feature, then going back to the vb form and pasting the first item in textbox1... then go back to the website and highlight item two... return to the form and paste in textbox2.. then the same procedure for the next three items
is there a way to highlight all five items from the website, right click, select copy and then paste the information into the 5 textboxes on the form... one in each of the textboxes provided without doing it one at a time
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Mar 30, 2012
I am trying to show a list of folders then copy only the selected folders.It displays the folders correctly but copies only the contents not the folder itself, how can I correct this?
Display files
Private Sub ListDirs()
SrcFolder = (("\" & (OldPCTxtBx.Text) & "" & "C$"))
Dim dir As New IO.DirectoryInfo(SrcFolder)
For Each subFolders As IO.DirectoryInfo In dir.GetDirectories
[code]....
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Jun 6, 2011
I googled some code that takes listview contents and puts it into the clipboard, but it doesn't work, when I paste the contents into Excel it looks weird!Here's the code that copies listview contents to clipboard:
Public Sub CopyListViewToClipboard(ByVal lv As ListView)
Dim buffer As New StringBuilder
For i As Integer = 0 To lv.Items.Count - 1
[code]....
The code makes sense to me when I'm trying to see what it's doing but why in the world when I paste the contents into Excel it looks like this:I don't understand...everything is fine when I'm adding new items to the listview and all, but when I click "copy" and then paste it into ms excel this is it how it looks like...
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Jul 20, 2011
I have to periodically (2-3x/wk) copy a file or two to approximately 70 remote computers. I have full control of the remote computers and they all follow the same directory structure and security permissions. I have asked in the General PC forum to see
[Code]...
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Jan 10, 2010
I have a file that is constantly altered, and if an error happends, I want to have a backup. I was wondering if there's a way to make a script that will copy all the files in the selected folder, and post/overwrite them every 20 minutes in a back-up folder or something, and I say overwrite so it doesnt take up 298347234 gigs of data.
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Jul 5, 2011
Is there anyway to reliably know when a large file has completely finished copying to a particular folder? For example, Computer1 copies a large file to Server1Share1. On Server1Share1, I want to do something AFTER the file is done copying, without Computer1 intervention.
[Code]...
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Oct 24, 2010
I have to create a program to manage a large number of USB Thumbdrives. In short, the drives will contain corporate images used by technicians to prep machines in the field. I do not have to create the images as they are already provided. Since I have to create 50 plus of these at one time, I am looking at writing a program to automate the process. As it stands now, formatting, partitioning, and copying the image to each key individually is, as you can understand, not efficient time wise. I have already purchased two industrial quality 7 port powered hubs.
The plan is to be able to: Fill all 14 slots in the hubs with USB ThumbdrivesUse the program to select the drives to prepareHave the program format and partition the drives (bootable)Copy the contents of the image folder provided to the USB keys. The idea is to do the above by filling all the slots and hitting one button, then walking away to do other work. When done, the drives would be ejected, and the next set of 14 installed.
I have already created the User Interface. It consists of: 5 buttons (Scan For Drives, Format Drives, Build Drives, Build And Format Drives, Exit).One "Select Source" entry field to select the source of the Image Files.One Checked Entry List. This is where all available drives will be listed, and the one's desired to be checked.
Now, it has been 20 years since I did any coding, and all of that was done in languages that are pretty much dead today (Turbo Pascal, Clarion Professional Developer and R:Base), so to say I'm behind the curve is an understatement. While I was never a real fan of Basic, I have some experience with it. But today's VB.Net ain't your daddy's basic, and there's no way I have time to learn C or C++. I have the Express version of Visual Studio 2010, which should be fine for this project.
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Jan 9, 2011
I'm trying to make a program that can export my schedule into a CSV file to upload on to google calender.I need to extract some text within a textbox control. I'll show you an example.This is the text in the textbox:
Quote:
Monday, 10 January, 2011
09:45 - 18:00
Phone Work09:45 - 12:15
[code]....
I need to get just the date and times from this list, and put them in variables. so that I'll end up with:
1) A string with a value as a date, which would be "10 January, 2011" for example: strDate1 would have the value of "10 January, 2011"
2) A start time, for example: strStartTime1 would have the value of 9:45
3) An end time, for example strEndTime1 would have the value of 18:00
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Apr 7, 2012
how to use bit fields (Boolean) in datagridview in visual basic 2010 how to know CheckBox checked state checked or not if CheckBox Checked State = Checked?
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Aug 1, 2011
lock from reading/writing/copying a loaded XML file with XDocument.Load [VB 2010]?
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Nov 14, 2011
I'm currently refactoring an old Visual Basic DLL (VB.Net), which stores all of its data in one module called Globaldefinitions as public fields. There are about 200 fields, referenced thousands of times all around the code:
Public Module Globaldefinitons
Public a As Short
...
Public zz10 As Double
[Code]...
I need to change the module into a class with non-shared fields. This means, each and every of these thousands of references needs to reference the instance of that class:
globalDefinitionsInstance.a = 5
How do I go about this efficiently?
Regular expressions operating on the source fall flat. Refactoring tools like Re-Sharper or CodeRush don't seem to offer this functionality. Visual Studio 2010 cannot do it automatically either.
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Jun 19, 2011
Class Foo
ReadOnly name As String
Public Sub New(name As String, dependentUpon As Foo)
Me.name = name
[code]....
The output of New Bar() is:
Dependent created. Dependent upon nothing.
Independent created. Dependent upon nothing.
It seems fields are initialized in the same order as they appear in the source code, which (a) leads to an unexpected result, and (b) seems a little puzzling, given that one is normally not permitted to read from uninitialized variables in .NET, yet that seems to be working fine above.I would've expected VB.NET to be smart enough to initialize referenced fields first, and only then those that reference it; i.e. I'd have liked to see this output instead:
Independent created. Dependent upon nothing.
Dependent created. Dependent upon Independent.
how to get VB.NET to behave like that instead, without simply having to swap the declaration order of dependent and independent inside class Bar?
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May 27, 2012
I'm trying to create a table in Word using data from a table in Access. There are four fields in the access table that I need. 3 fields are text which I can populate the Word without any issues. However the fourth field is a memo with >255 characters.I'm struggling to come up with the proper code to allow me to populate the Word field with the memo data that has more than 255 characters. The code I have so far is listed below. But when it hits the memo field, it crashes on the line I marked with **. I know it's not text, but I've tried many different field types, but nothing has worked so far.[code]...
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Jan 14, 2012
My intent is to have the code - on a button.click event - check the Username and Password fields and return an error depending on which is wrong. Or if both are wrong, return a different error message. I've set the username as parts and the password as parts (still learning how to use external authentication). [Code]
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May 15, 2010
If i change any table definition after using the fields on a form VS stalls and doesnt allow to load the form
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Feb 17, 2011
My program is databound to an access 2007 database. I have a datagridview showing rows as part of my screen and the other part of my screen is texboxes bound to a different table.What I currently have:
1. Date in textbox from one table
2. Age in Datagridview column from another table
I need help with having a calculated date column in the datagridview that will be the textbox date + age (in days) in the datagrid column. I would also need this column to store in my database like any other field also. So if I typed in 2/17/11 into the textbox, and I typed in 2 in the age field, the calculated field would display and store 2/19/2011 in my datagrid and database. My dataset designer won't let me add a date to a string so I'm completely lost. A query calculates it easy in access but when I load the access query in my dataset it doesn't calculate anymore.
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Nov 2, 2009
VS 2010 [RESOLVED] Caluclated Fields in a Datagrid
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Dec 27, 2010
I want to be able to select multiple files to upload to my FTP server. Everytime i browse for a file i want a new "Browse" button to appear. What i found was:
Dim f As New Button
f.Location = New Point(0, 0)
f.Parent = Me
[code]....
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Mar 14, 2011
I used to run into problems with this in VB6, too...
If Not ds_Students.Tables(0).Rows(0).Item("ClassDay2").IsNullOrEmpty Then
txtClassDay2.Text = ds_Students.Tables(0).Rows(0).Item("ClassDay2")
End If
This produces "Public member 'IsNullOrEmpty' on type 'DBNull' not found."
And is there a different test for fields of different data types?
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Aug 17, 2010
I have several sqldatasources for my gridview. All of the columns are autogenerated. However they all have some consistent fields and I'd like to make those fields template fields so I can modify the edit template for them such as adding a drop down menu. Is this possible?
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May 14, 2012
In my combobox I have a list of sub folders (so all folders in my Jobs folder), each sub folder has a text file called summary.txt - would it be possible to display fields from the summary.txt in various textboxes if a folder is selected from the combobox? I use the following coding to display folder list in my combobox
[Code]...
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Mar 12, 2011
I want to do a web navigation program with autofill forms.(for semi-automatic directory submition). This is one example but because the directory's are diferent I need to check first if fields exists, and I dont know how?
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
WebBrowser1.Document.GetElementById("Title").InnerText = Form2.titlu.Text
End Sub
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