Deleting Rows From .sdf Files Using Database Explorer Utility Of Visual Basic?
Feb 14, 2011
I am trying to delete rows of an .sdf file using the Database Explorer utility of Visual Basic. When doing so, I get the following error message:No rows were deleted.
A problem occurred attempting to delete row 1.
Error Source: Microsoft.VisualStudio.DataTools. Error Message: The row value(s) updated or deleted either do not make the row unique or they alter multiple rows(48 rows). Correct the errors and attempt to delete the row again or press ESC to cancel the change(s). It is correct that the data in the rows are not unique (and not supposed to be; there is no "error" to correct), but why should this prevent deleting them?
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May 6, 2010
I would like to be able to read a column of numbers from an Access database into a VB.NET program and then manipulate that data.For example I have a column of numbers and want to add them up and then take the averageThe maths is not a problem but how do I read the column of data into the program. I know how to do this if I first export the Access data into a CSV file, but
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Mar 30, 2011
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Oct 13, 2011
I have a form with a listbox bound to a tableadapter. Users can select from a combox, that has a list of users in it, then click "Add" to add it to the listbox and remove to remove it. This part works fine. The problem comes when updating the database:
[Code]...
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Sep 25, 2009
I use LINQ but I am not an expert.. still learning as well on vb.net and sql
I have tables Orders and Numbers
Orders Table:
Order_ID -primary key
Date_Ordered
[Code].....
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Jan 10, 2012
how to Disabled Specific Rows in DataGridView using visual basic 2010
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Jun 15, 2010
I have an Access table in which I connect through ODBC commands. I want to delete the 50% of data rows from it. Can anyone knows a string to write for doing that? ALARMLOG is my table. In MS SQL I tryed succesfully the following command :
[Code]...
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Sep 15, 2010
I have been trying my hand at this for some days now and just cant get anything to work. Below is the code im currently using to delete a row from a database table, the problem when trying to build the project line 5 is giving this error about the value con" Value of type String cannot be converted to 'System.Data.OleDb.OleDbConnection' "
Dim con As String = "Provider=Microsoft.Jet.OLEDB.4.0;" & "Data Source=Customers.mdb"
Dim cnn As New OleDb.OleDbConnection(con)
cnn.Open()
[CODE]...
I have also tried using this code below, but to no success. Im basically just looking for something rock soild that i can use to accomplish this task. Been stuck on this for quite a while now.
CustDetailsTableAdapter1.Connection.Open()
Me.CustDetailsTableAdapter1.Delete(txtDelCustN.Text, txtDelCustSname.Text, txtDelCustTel.Text, txtDelCustAddr.Text)
CustDetailsTableAdapter1.Connection.Close()
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Jun 24, 2009
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Jan 16, 2012
For instance, I would like to read the picture's dimensions (width, height) and modify them to fit space available on a page. I have many pictures, so don't want to do this by hand.
If this involves using components or objects, where to find useful documentation about properties, methods, or whatever I need in order to write a program.
I'm using Vis Basic 2010 Express in Vista Ultimate.
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Public Class Form2
Private Sub Form_Load()
End Sub
[Code]...
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Jan 21, 2011
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Jul 10, 2010
I have this
[code]...
Still it shows the message box, this shouldn't be the case and is a tested and proofed situation, in this case it didn't, what am I doing wrong here?
Kind Regards, Starf0x
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Jul 6, 2011
I am trying to locate the runtime install for Visual Basic 6 Runtime Extended Files. I am not a developer just the guy truing to get it onto the systems for them. My question is simple anI hope the answer is the same. We are converting our systemsfrom Windows XP to Windows 7 and we need the extended runtime modules so a number of our applications will actually work.
I cannot locate the install for this in the Visual Studio download area. Is the re-distributable part of the studio install (so it should be on one of the developers systems) or do I download it from somewhere else.
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Jun 3, 2010
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Jun 25, 2012
I currently have these group of files I want to rename:
C:Users medinaDocuments estenviromentTestfolderfile1-1111.doc
C:Users medinaDocuments estenviromentTestfolderfile2-1111.doc
C:Users medinaDocuments estenviromentTestfolderfile3-1111.doc
C:Users medinaDocuments estenviromentTestfolderfile20-1111.doc
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So for example, On my app, in the text box field, I would enter 2222, then when I click on button1, it will rename file1-1111.doc to file1-2222.doc, file2-1111.doc to file2-2222.doc, etc.....
This is my VB code I currently have:
[Code]...
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Jan 25, 2012
how to sort the group of files in the directory using Hashtable by values?
i'll have more than 500 no of files in the below format:
prod_orders_XXX_<TimeStamp>.dat
XXX = symbol of the product and the length may varies.
<TimeStamp> = date and time
Multiple files for the same XXX are possible with different time stamps.
Here are some examples:
prod_orders_abc_20122001083000.dat
prod_orders_abc_20122001083111.dat
prod_orders_xyz_20122001093157.dat
[Code]......
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Jan 31, 2011
I've made sort of a "Game"
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how to read selected text from pdf files in vb.net - visual basic language ?
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lab and do display the .htm files.
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Sep 22, 2010
I saw Beth videos, and I wanted o creat a database with Visual Basic...
I downloaded Visual Basic 2010 Express, but I saw there is no option to connect to server...
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i'm trying to use a database with Visual Basic Express Edition but I seem to be stuck with:-* Adding* Editing* Removinga record. Could anyone advise me please, or write a piece of basic code so I can achive the above?Thank You.Also (Out of interest)Can anyone explain, when I've added a entry into my Access database through my visual basic form, I have created.I can see the record, if I load the database in Microsoft Access.When I load my small project back in to Visual Basic Express Edition and run it, the database is blank?
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How to use mysql in visual basic as database?
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I need your suggestions and comments because I'm having problems in which database I will be using MySQL or Microsoft SQL Server.
Which database is easier to use? In terms of connecting the database to Visual Basic 2008
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