I'd like to get some values from nvarchar column (SQL Server database). My code looks like below:
Dim value1 As String
Dim con2 As New System.Data.SqlClient.SqlConnection
con2.ConnectionString = "data source=AAA;initial catalog=DWH;integrated security=SSPI;"
con2.Open()
[code]....
It works fine only when there are numeric values in the column. But in this column are stored variable characters values and this types of values are not being displayed on the page. I don't know what is the reason.I've tried to use getValue.ToString instead of getString but it doesn't work either.
I'm working on an ASP.NET application that uses VB. I'm using a SQLReader/SQLCommand/SQLConnection within the VB file to try to pull data values.I was mystified to find out that the reason why the query wasn't returning any values, and someone here showed me how to troubleshoot the query to verify things were being returned, which they weren't.
I talked to a co-worker, and he asked if it would match because I was feeding a string, and the Text field for the database is an nvarchar. How can I declare the variable in VB so that when fed in as a parameter for the query, it can match?The types of data it looks to match are just basic things like "2", "2a", "1a", and so on.If there's no way to just declare the nvarchar, does anyone have a suggestion on how I might workaround that?
Side note: This is a continuation, of sorts, of this question: http://stackoverflow.com/questions/768052/sql-reader-saying-no-values-exist-query-seems-fine
Edit: I set things up like you guys said, but now I'm getting an error that "No mapping exists from object type System.Data.SqlClient.SqlParameter to a known managed provider native type. "I have the parameter as a form-wide variable like this:
Private travelParameter As New SqlParameter("@trip", SqlDbType.NVarChar)
And then inside the main form,
travelQuery.CommandText = "SELECT [StartLoc], [EndLoc],[TravelTime], [AvgSpeed], [Distance] FROM [TravelTimes] WHERE [TripNum] = @trip" travelQuery.Parameters.AddWithValue("@trip", travelParameter)
I don't know how to convert the nvarchar value into an int, but that is the way it needs to be set up. I've found other posts about this but I don't know how to use CAST in the INSERT statement I have. All the posts I could find were about converting to int in SELECT statements. I need this statement to change the field @Duration to an int in the database. @Duration is an amount of time. (01:00, 02:00...) They will all get rounded up to the next int value. So if a user enters 0:45, it should be converted to 1. how to get this INSERT to work?
'SQL Insert: Product table Dim sqlInsertProduct As String = "INSERT INTO Product (ProductName, Status, CreateDate, ModifyDate, CreateUser,
I don't understand where else it could be screwing up. I'd love to be able to keep it to a null value if it is one already, I'm just trying to get it to take anything right now and this is where I'm at.
I have a sql select statement with something like:
select... where column in (@Parameter)
In VB code a set parameter.defaultvalue to "65555,67803", But i get an error "Conversion failed when converting the nvarchar value '65555,67803' to data type int."
i have a app in visual basic mobile 2008, so i finish but now i need to tranfer the data generate in the in the app mobile to data base in sql server 2008.
I have to write a code in vb.net (2010).To get a data from Database A table 1 and dump it to Database B Table 2.What's the best way to do this? Most efficient way? I know I can do this very easily in sql management studio but I need to write a code to do this in vb.net.
'm just a beginner who want to learn on manipulating SQL Server data using vb.net. I have already experienced manipulating data in ms access. So I just recycled the code that I used in here. But unfortunately I got this error:Object reference not set to an instance of an object.And another problem is that, I'm not really sure if what I have inputted in the SqlConnection matches what is in SQL Server. Here is a screen shot of sql server management studio express:
Imorts system.data.sqlclient 'declarations Dim idnum As String
I am trying to connect the database that is sql server 2005 to the vb.net code so that I can add the data to my database, which is already in the sql server and retrieve the required data from the database.
I'm trying to insert data onto a SQL server database. The Database connects up fine and retrieves data but I'm having difficulty inserting new data. [code] The query works if I run it through the table in database explorer and value of dim h shows 1 (rows affected). However, nothing gets updated.
how to insert some data on SQL Server database?i've tried this code, but it not works for me..here's the code:
Dim constring As String = "Data source=.sqlexpress;attachDbFilename=|DataDirectory|Database1.mdf;integrated security=true;connect timeout=30;user instance=true" Dim connection As SqlConnection = New SqlConnection(constring)
I am currently using HDI Membership provider and the design looks as shown below:Now I am trying to create a new user and insert those values into the database as shown below:
Try Dim connectionString As String = "Data Source=.sqlexpress;Initial Catalog=HDIMembershipProvider;Integrated Security=True" Using cn As New SqlConnection(connectionString) cn.Open()
[code]....
Now the problem is the data is not inserting to the database.
I have tried to insert data to SQL Server 2000 database but in vain. I am using Visual Studio 2010. I am using the below code that does not generate any error when i click on the button to insert but instead it inserts NULL as a string in the table for both column. show me how to write a simple application that inserts some data to a database table.Below is the code I have so far managed to write and am using an sql datasource:
I need to copy data from one database to another using a VB.NET program. The target database is SQL Server the source database is some proprietary ODBC compliant database.
I need to loop through a list of table to copy. Read the data from the source database table for a given modified date. Delete the corresponding date from the target database table and insert the records from the source table. The databases are of the same structure i.e. table names and field names, but the data types may differ (however they are compliant e.g. double in source, float in target). No primary keys exist.
Heres how I may do it :
Firstly execute a Delete command to the target. I could then use a DataReader to obtain data from the source, loop through the Items and create an Insert Command for each row. Add Parameters to the Command with the appropriate values and execute. And wrap the whole thing in a Transaction.
I have Visual Basic 2010 Express and SQL Server 2008 R2 (not Express) installed on my Windows 7 machine. In Visual Studio, I am attempting to create a Data Connection to a database in SQL server. Server Mgmt Studio is not running. When I attempt to add a connection in Database Explorer, to the AdventureWorks _Data database, I get the message "This file is in use. Enter an new name or close the file that's open in another program." There are no programs running except VB, except maybe for the SQL Server engine running the background.Please note that I can open and access tables within a database in code within Visual Studio, I just can't add a connection in Database Explorer.Am I doing something wrong? I've been very frustrated on this issue for a long time
I'm using the following code to insert the data in a table and i am getting the error at cmd.executenonquery()....The exception is labelled as SQL exception and the underlying message says "String or binary data would be truncated. The statement has been terminated." [code]
i have a site that is running in php with a mysql db and i want creat a app wiht .net 2008 to return/send values to that database what is the best way to do that? i have think in this options:
I have a very useful vb6 program that reads ms access tables and loads the data onto a sql server database in the correct format. The customer maintains his data using the access tables. The vb6 program allows him to then select the data categories he wants and loads the data onto a sql server database online.I haven't used vb.net yet.
For example, i installed the windows application in more than one pc. All the pc's are in network. I want to save the data in a single database. How it is possible?
I have a string with Binarydata that is 64bit. I want to store this data into SQlServer database and the column is varbinary(Max).When I pass the string I am getting an error saying string cannot be converted into varbinary.
I have a code that binds the data from the database to textboxes. The problem is I want to make one of the textboxes Payment use a dollar sign.I tried formatting it as shown in the code below but only the first record gets formatted, the rest do not. When I click the next button, the dollar sign disappeared.
I have tried everything else I know, FormatCurrency but no luck.Payment is the name of the column in the database, the data type in SQL Server is Small Money.
I have a project to import data from one worksheet into database SQL Server 2008 on Windows Server 2008 using Interop. The project in debug mode works fine, but accessing the site from a client computer, I am getting permission denied message to the file I'm trying to import and it is located on the server. I wonder what it takes to make additional settings, as well as file folder. IIS? DCOM?
I am trying to load CustomerName and PrintStreamACNO from tblCustomers to my dropdownlist. I am not getting the correct syntax on the binding and displaying.
Imports System Imports System.IO Imports System.Reflection Imports PSXSTL.Data Imports PSXSTL.Data.DataAccess
I do have Visual VB.NET 2008 Express installed, SQL Server 2005 express installed, and I do know how to start a brand new project in VB.NET, and then add the database to the solution explorer, modify the tables/fields, etc. I know how to create a WinForm, add some controls (and name them and whatnot).....
So in MS Access I know how to use VB in the Code-Behind-Form to use the form in an unbound manner, and insert data into the tables via Visual Basic with SQL statements. I am looking to be able to begin the same sort of thing here, because I guess I have to start somewhere?
i keep on getting SqlException was unhandled incorrect syntax near '+'.i cant seen to see whats wrong with my code.i hope someone can help me solve this code.[code]
I know how to select items from an array with LINQ, but what I can't figure out how to do is access a database using an IQueryable. I connected the database to my project, added two classes from the database to the "LINQ to SQL" .dbml file and saved it. In my programming assignment, I am not supposed to create a data source (table thing) to display the data, but update my own interface manually. In order to do it, I was told to instantiate this:
Private dogs As System.Linq.IQueryable(Of Dog)
(Dog is a class that I added to my .dbml file from the database file)Also, I am told it involves using a method
