I have this generic routine that I wrote that takes a list of sql strings and executes them against the database. Is there any way I can make this work faster? Typically it'll see maybe 200 inserts or deletes or updates at a time. Sometimes there is a mixture of updates, inserts and deletes. Would it be a good idea to separate the queries by type (i.e. group inserts together, then updates and then deletes)?I am running this against an ms access database and using vb.net 2005.
Public Function ExecuteNonQuery(ByVal sql As List(Of String), ByVal dbConnection as String) As Integer
If sql Is Nothing OrElse sql.Count = 0 Then Return 0
I'm trying to update a record in MS Access database with the code below. But it says 'Syntax error in UPDATE statement and highlights cmd.ExecuteNonQuery()'.
im using VS2005. and the built-in sql express.when i run my code in debug mode, i can see that the required number of rows are being affected correctly.but when i actually go and see in the table data, the data has not been inserted/updated.i am using sqlcommand. executeNonQuery() to insert/update data.also, i must add that both executeScalar and executeReader are working perfectly.what could be the possible reason for executeNonQuery although showing the number of rows affected but does not actually do it when seen in the table data?int x = cmd.ExecuteScalar(); // X SHOWS 2 OR 3 depending on the number of rows affected.
I can save my data to access database and in the access database field I set it to date/time.But problem is when I get the value out from the database.. the format is always month/day/year hour:minutes:seconds example today: 5/2/2011 12:00:00..How to get the value into listview becoming May/2/2011 without the hour..Here's my code to get it from database ListView1.Items(i).SubItems.Add(dt.Rows(i)(14).ToString).The second problem is.When I would like to edit, how can the datetimepicker get the listview value ? [code] info: using access 2003 (.mdb) the Date of Birth field has been set into Date/Time.
I have an application that has an Ms Access 2007 DataBase which runns great if access is installed. Is there any code that I can use in vb that I would be able to run access with out installing it.
I have two Access database, say database One.mdb and Two.mdb. I want to use VB2005 to export tblCustomer from One.mdb to Two.mdb, and replace the existing tblCustomer in Two.mdb, during run time. I basically want to simulate the export function that is available in MS Access (which can export one table from one Access database to another) with VB2005 during run time. I can think of a way by querying the table to a dataset and then delete everything on the other database before filling the table in that database with the dataset
I am trying to import data from an access database to a access database that my project uses I am having problems with combo box fields in the database with the data. I want to import what is displayed instead of the numerical key value. Example: The combo box displays employee names but the value stored is the key value from the employee table so instead of importing John Doe it imports 2 is there a way to make the actual name instead of the number?
I've just upgraded a project to .net 4.0, I'm getting an odd error using ExecuteNonQuery: Errors: {"Mixed mode assembly is built against version 'v2.0.50727' of the runtime and cannot be loaded in the 4.0 runtime without additional configuration infor
Dim xServer As Server = New Server(SQLServer) Dim db As New Database(xServer, Database) db = xServer.Databases(Database) Dim xUser As New User(db, LoginName) xUser.UserType = UserType.SqlLogin
I'm writing an asp.net page with a simple registration form that connects to my access database and inserts the values in the table. So I have my database, my registration page, everything looks fine in my code, but there's a syntax error I can't seem to figure out. When I go on my webpage and click submit, it says : Syntax error in INSERT INTO instruction.
I am using the code shown below to compare two Access databases with two fields each and write the results to a third Access database. I am getting an error at the "Do While DMReader02.Read = True" line: "Invalid attempt to call Read when reader is closed." Why would the reader be closed at this point if I am using different DataReaders in the two loops?
I'm using VS 2010, and I did a project using VB and a database in Access. The problem is that when I try to put that "application" on other computers, sometimes, is not working. I thought it can be because on these computers they don't have access, but on one computer, is running another app which is using Access and there is no Access installed. How can I check if my application requires Access to be installed or not?
Here is a example of how I did the connection:
Public AccessOLEDBConnString= "Provider=Microsoft.Jet.OLEDB.4.0; Data Source=" & myfullpath & ";Jet OLEDB:Database Password=password"
Function getConnection() As OleDb.OleDbConnection
[CODE]...
And when I want to have access at the data I'm doing like this:
I have a program where a user can update their Password by Entering their old password in a textbox, and entering their new password in a separate textbox.
An update query then updates the database with the new password.
CODE:
However, everytime the code gets to cmd.ExecuteNonQuery(), it throws up an error saying that there is a syntax error in the Update query. However, If I use this query in Microsoft Access, it works fine so the Update query itself is written correctly. What could be wrong?
Note: I am using an UPDATE query in another piece of code within the same Sub routine and it works there. Its something about this query.
Note Again: If I change the Update query to UPDATE Users SET EMAIL = '" & tbPassword.Text & "' WHERE userID = " & Row.Item(0)" it works. Something about Password that throws that error.
Is there any way that i can be able to get the ExecutenonQuery to Execute faster. Am using it to run mysql queries that have joins from diffrent tables. As I have come to notice, the user has to wait a while before the statement ExecutenonQuery can be completely executed.. is there any way that I can get it to execute faster?
I'm trying to execute a SQL command, but I just can't find out why this is not working.This is how I defined the "execute" function in my class named "clsSQL":
SELECT Inventory.Inventory_Id, Inventory.Inventory_description, Inventory.Inventory_stock_count, nz((SELECT Sum(Order.item_qty) AS SumOfitem_qty FROM [Order] WHERE Order.From_date<=Date() AND (Order.To_date)>=Date() AND Order.Item_ID='I' & Inventory.Inventory_Id),0) AS CurrentlyOut, [Inventory_stock_count]-Nz((SELECT Sum(Order.item_qty) AS SumOfitem_qty
i want to delete data from database,but i can't. i think it's because the executeNonQuery is being converted to string..here is my code :
kongkon = New SqlCommand("DELETE FROM [User] where User_ID= ' " + lblssearch.Text + " ' OR [First Name] = ' " + lblssearch.Text + "' ", con) ra = CStr(kongkon.ExecuteNonQuery) ---> i think this is the problem
I'm trying to execute a SQL command, but I just can't find out why this is not working. This is how I defined the "execute" function in my class named "clsSQL":
[Code]...
Probably, I just need another pair of eyes, 'cause I can't see what am I doing wrong Could this be related to the database and not to my code?
Everything I read says calling an SQL Server stored procedure (SP) via ExecuteNonQuery .ExecuteNonQuery(cmd) should return the number of rows affected. When I run my code it successfully inserts a new record but it returns -1. The SP itself is coded to return (0) if successful else return (-99). It is these values that I want to test after execution. I have tried to add a return value parameter to the DBCommand but this causes an error on that parameter: Quote:
(using VB2008) I am trying to automate Access from VB.Net. To do this, I added two libraries to my project, Microsoft.Office Interop.Access v12.0.0.0, and dao v10.0.4504.0. This seems to give me all the necessary commands, yet when I tried to open up an Access database via the following code:
I have a similar problem posted in the forum similar to this : started learning VB. I am not able to get my example code to work to access an Access database through automation. The author of my book suggested that I might not have the correct Jet 4.0 engine. The specs I have are: MSJet40.dll, Dated 7/14/2009, Prod Ver 4.00.9756.0.
I have two Access database, say database One.mdb and Two.mdb. I want to use VB2005 to export tblCustomer from One.mdb to Two.mdb, and replace the existing tblCustomer in Two.mdb, during run time. I basically want to simulate the export function that is available in MS Access (which can export one table from one Access database to another) with VB2005 during run time. I can think of a way by querying the table to a dataset and then delete everything on the other database before filling the table in that database with the dataset. However, there should be something simpler and faster than that, shouldn't it? Any idea?
I have this problem, I can create a setup for my app/database but everyone can open the backend file which is an MS Access database. I want it so we can only access the database using the frontend app.
I coded a program to access a Microsoft Access 2010 database. The program is written using Microsoft Visual Studio 2010. I get the error message that the database I'm trying to access is in an invalid format. look at the code below to see what I missed. The error is in the datasource statement.
UPDATE: I've modified the code to drop the indexes before the inserting, but it makes not difference.I've been asked to resolve an issue with a .Net/SqlServerCe application. Specifically, after repeated inserts against the db, performance becomes increasingly degraded. In one instance at ~200 rows, in another at ~1000 rows. In the latter case the code being used looks like this:
Dim cm1 As System.Data.SqlServerCe.SqlCeCommand = cn1.CreateCommand cm1.CommandText = "INSERT INTO Table1 Values(?,?,?,?,?,?,?,?,?,?,?,?,?)" For j = 0 To ds.Tables(0).Rows.Count - 1 'this is 3110
[code]....
The specifics aren't super important (like what 'tbl' is, etc) but rather whether or not this code should be expected to handle this number of inserts, or if the crawl I'm witnessing is to be expected.
