My issue is that I keep getting an error on console that says
Invalid Object Name 'dbo.Products'
I am using Visual C# 2008 Express Edition and SQL Server 2008 Express.
I have had some issue with preparing/installing the Northwind
sample database, so I'm unsure if that has any weight on the issue though. Our teacher gave a test program which is the program I am receiving this error.
static void Main()
{
string connectionString =
"Data Source=.\\SQLEXPRESS;AttachDbFilename=C:\\Users\\Andrew\\Desktop\\SQL Server 2000 Sample Databases\\PUBS.MDF;Integrated Security=True;Connect Timeout=30;User Instance=True";
string queryString =
"SELECT ProductID, UnitPrice, ProductName FROM dbo.Products "
+ "WHERE UnitPrice > @pricePoint "
+ "ORDER BY UnitPrice DESC;";
int paramValue = 5;
using (SqlConnection connection = new SqlConnection(connectionString))
{
SqlCommand command = new SqlCommand(queryString, connection);
command.Parameters.AddWithValue("@pricePoint", paramValue);
try
{
connection.Open();
SqlDataReader reader = command.ExecuteReader();
while (reader.Read())
{
Console.WriteLine("\t{0}\t{1}\t{2}",
reader[0], reader[1], reader[2]);
}
reader.Close();
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
Console.ReadLine();
}
}
Your database is not Northwinds
but Pubs
.
Check the Connection String
string connectionString =
"Data Source=.\\SQLEXPRESS;AttachDbFilename=C:\\Users\\Andrew\\Desktop\\SQL Server 2000 Sample Databases\\PUBS.MDF;Integrated Security=True;Connect Timeout=30;User Instance=True";
Specifically on AttachDBFileName
:
AttachDbFilename=C:\\Users\\Andrew\\Desktop\\SQL Server 2000 Sample Databases\\PUBS.MDF
Try to change it to Northwinds (given it is in the same folder as Pubs), like:
AttachDbFilename=C:\\Users\\Andrew\\Desktop\\SQL Server 2000 Sample Databases\\Northwind.MDF
Update :
Try to use SqlCeConnection
instead of Sqlconnection
because it looks like you are using compact or SDF
:
using (SqlConnection connection =
new SqlConnection(connectionString))
To:
using (SqlCeConnection connection =
new SqlCeConnection(connectionString))
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