i've been trying to figure out how to update a row in my database, using a set of fields from the current form. The code which i have made so far is shown below, however it always comes up with an error message:
Private Sub btnupdate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnupdate.Click
Dim SQL As String
Dim updatelogin As New OleDbCommand
Try
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i was wondering is there a build in class in vb.net for get a range of dates from a column:What i mean is say i had the following dates in a column
10/03/2012
11/01/2011
14/05/2011
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I have built a search criteria for a table in my database. I have 3 textboxes first says anstnr second says firstname and the third lastname.The problem is that i cannot search if first field "anstnr" is blank. If i only will search on firstname thats not working.
Private Sub FillByolikaToolStripButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles FillByolikaToolStripButton.Click
Try
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I want to search record in the database and if the record all ready in the database something do. I use this code but it is not work
Str SQL = "SELECT* FROM student WHERE stdno = '"& txtstdno.Text &"'"
oledbcon.open()
ry
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thr are 02 fields username,pasword in database also two textboxes in vb.net form for username and pasword ... i need coding of if else which confirms that, if (username,pasword ) = username,pasword of atabase then
View 7 RepliesHow we can show data from acess database in datagrid
View 1 RepliesI've already finished the program and the last task was to add a password for my MS Access database. I've created the password in Ms Access and I've already modified the connection and saved the password but when I run the program all codes like this
Me.Table1TableAdapter.Fill(Me.Database1DataSet.Table1)got an error message says Not a valid password.
now i am using vb.net 2005 with mysql.
i need to update a table from csv file to database(mysql) . I have a csv file that contains bulk data.(it has F1,F2,F3,F4,F5,F6,F7 Columns, and F1, F2 are Primary)
i use Quote:
ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & FileNameString & ";Extended Properties=""Text;HDR=No;CharacterSet=437;FMT=Delimited"""
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I have recently wanted to start work on an application that uses an MS-ACCESS database. The problem is that no matter what I do, the actual database will not retain any records added. I have followed the Microsoft examples to the letter and it does not work. As long as I have my app running I can add, edit and delete the records. As soon as I close it and run it again, all the records are gone. The mdb is not read only, I've checked it. I also decided to try the my video collection example program that is included with VB 2005 and it will not retain any records either. Is there any code I need to add to get this to work or is my copy of VB 2005 broken? This is extremely frustration because I plunked down a lot of money for Visual Studio 2005 Professional. This is a key feature and it should work. Microsoft had me do a reinstall and apply a couple of patches and it still did the same thing. They told me either I am not coding it right or my system is flaking out. I did a fresh install of Windows (I even formatted the drive before installing), and reinstalled VS yet again and even with that being the only program on there, it still will not work. So I installed all my programs again, restored my backups and now a day and a half later I am writing this.
View 9 Repliesi have 3 user roles "ALGEMEEN,OZIS,VERPLEEGKUNDIGE".And I want them added to the database.But when I use the code below it only adds the userrole "ALGEMEEN" and not the other 2.
Dim cmdCheckLidVan As New SqlCommand("SELECT COUNT(*) FROM [Lid van] WHERE [Gebruikers-ID] = @ID AND [Rol-ID] = @RolID", connection)
Dim strRolArrCount As Integer
Dim strRolArr() As String
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i have an datagridview bound to an access database, the table is empty so i want to use the datagridview to insert and update data to the database.so if i enter a complete row of data, i have an update button that looks like this
vb Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click Dim tableAdapter As HEALTHDataSetTableAdapters = New HEALTHDataSetTableAdapters.HEALTHDATATableAdapter()
tableAdapter.Update(HEALTHDataSet)
End Sub
I am using the select command to find a specific row and if its found update it but when I update back to live database I get a concurrency error. Here is my
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Having problem in updating an existing record. An error occurs "Data Type Mismatch in Criteria Expression"
Private Sub ToolStripButton1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ToolStripButton1.Click
Dim myBuilder As OleDb.OleDbCommandBuilder = New OleDb.OleDbCommandBuilder(dataAdapter)
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I am fresher in vb.net but I have experience in vb 6.0. But I want to connect database in sql server through sql connection. In that case how to create connection with window or sqlserver authintication mode and how to add or update new record in data base in batch transaction. Please help me with sample code.
So that I can understand eassily.
update statement, i am trying to update a row within a access 2007 database here is my code.
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I am using vb.net with access database. I am using sql. How can i update database with the value 40'6"(Feet and inches values)
View 5 RepliesI want to make simple quiz (100 questions), structure: 1 lbl = question, 3 radio buttons (answers) and 1 button(next question).I added access database to DataSource, binded data to lbl and radio buttons, it automaticaly added the code:[code]The form is loaded ok with the data I need but I can't write the code for the button "next" to load next row from database!The question is: HOW TO LOAD NEXT ROW FROM ACCESS?
View 14 RepliesWhat is wrong with this code. It does not update the access database and no error.
Dim conn As New OleDbConnection
Dim sqlQRY As String = "SELECT * FROM StdMaster WHERE StuNo = " & txtStudentNo.Text & " ORDER BY StuNo"
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I already registered a custom dll in gac,but i want top acess the .dll in vb.net code without help of add reference.in my dll one function is there for that reson i want to acess the function.[code]...
View 11 RepliesI have just bought a new PC which runs MS Office 2010 under Windows 7 and I purchased Visual Studio 2010 Professional. I have a program which was running successfully on an earlier version of Visual Studio running under Windows XP. I have been able to replace the 32 bit Custom Control and the program, which was compiled on the old PC, is running successfully on the new PC.
However, a part of the program transfers data to an Excel spread sheet and this does not work.Opening the project in Visual Studio I have found the error. There were some problems with XL Application and XL Constants, but I think I have worked around these.[code]...
frmAddUser is a simple form that is opened as a dialog by a command button on the primary form (frmPrimary). Once opened, it's only job is to collect information via textbox and combobox fields. Once submitted, the information is added to the database.
This works, or so I thought. If I open this form, fill it out, and submit the information; the record is created. However, if I turn around and do it all again with different information, another record is created but with the previous information (not the new). It will continue to make records as long as I keep submitted this form but no matter what information I put in, it always uses the original information that was used to create the first record.[code]...
How to access data from Ms-Acess and oracle?
View 4 Repliesim working on a school project where i shall show/explain how a remote acess program work and i coded the most but when want to send all listbox items from server to the client and in the client is another listbox where it should be transfered over..[code]
View 4 Repliesnow i am doing final year project in vb.net and ms.access.but how i will connect vb.net with ms.acess data base table.
View 5 RepliesTrying to set a Combo Box RowSource to a field in a table that contains the choices separated by semi colons. Have tried both a query and a DLookup but it results in displaying the full contents of the table field, e.g. "10;12;14;16" rather than giving me the usual selection list
View 2 RepliesI have a small program on the menu written in VB6 retrieve data from Acess run very fast and now want to switch to VBNet2008. VBNet2008 conversion is still normal, but when running the menu does not appear that waiting in line, then click on the menu bar of this menu appears, but not the font is in Unicode data is available. Expect you to help debug programs that run on VBNet2008 still running good access Menu fast as running on VB6. Also supported is Unicode font on VBNet2008 does not function for unicode font. Attach program with VB6 and VB2008.
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Environment = VB.NET 2005 & Pervasive SQL 9.5 ADO.NET In a simplified example, I have single database table (customers) with the columns "customer_code_PK" and "customer_name" This table is presented in VB.NET 2005 as a single form datagrid (bindingsource/dataset). In this example, the database table is populated with the following data
customer_code_PK customer_name
SHELLShell Oil
BPBritish Petrolium
MOBMobile
In very simplified terms, code does the following;
sub on form load
fill dataset with database records (select * from customers)
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The datagridview loads the records correctly.Here is the sequence of operations that produces the bizzar behaviour.In the editable datagrid;
1.remove the row with PK = MOB -> save_button -> Database correctly updates
2.add a new row with PK = KFC -> save_button -> Database correctly updates
3.remove row with PK = SHELL -> save_button -> Database exception occurs
On this last command, the row SHELL is INSERTED!!, not removed.However, If I change ths save_button routine to this
save_button
call generate_custom_updateinsertdeletecommands
bindingsource endedit
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It works correctly !Is it correct that you would need to "refresh" the sql update commands after every tableadapter.update?
is there a way to update a database row with the update command by first defining all parameters and then all values just like you can in the insert command? "insert into table1 (parameter1,parameter2,....) values (value1, value2,....)"something like "set table1 (parameter1, parameter2) values (value1,value 2,...) where ...."?because I only know the syntax to define each parameters value "set table parameter1=value, parameter2=value2... where"
View 8 RepliesThis program is very difficult for me, but I must get threw it or I cannot finish... What I am doing is making a Database of foreign Languages with the spelling of the words and the pronounciation inside the database... The USER enters a paragraph of words into the translator textbox and pushed translate. The program has a DATABANK of words with the phonetic spellings and matches the word, then translates to phonetics. The problem is that new words keep appearing inside the language. So I incorporated a Database of 2 fields
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I created a dataset and i am using OleDbDataAdapter to insert new values to access database. But when i close the program and after open it, values are not in the database. How can i solve this problem? Also, i have another problem. When i write codes that
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