Everything is perfect in this connection string according to my knowledge.But its not working fine.I'll be very thankful if someone helps me out to sort out this issue.Thanks
string constr = "**Provider=Microsoft.ACE.OLEDB.4.0; Data Source=Data Source=F:/Database1.accdb;Persist Security Info=False**";
System.Data.OleDb.OleDbConnection conn = new System.Data.OleDb.OleDbConnection(constr);
Your current connection string has multiple issues. Try this instead:
string constr = #"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=F:\Database1.accdb;Persist Security Info=False";
Related
I need to open the connection for Entity Framework without a connection string.
Due to a security layer that we are using I'm, we don't allow to connect to SQL Server using connection string, So we have a DLL that returns an opened SqlConnection.
EF version: 6.2.0
Error:
MetadataWorkspace must have EdmItemCollection pre-registered.
I tried to give the entityConnection as SqlConnection but I get an error.
Sample code:
Public Shared Function getEntityConnection() As EntityConnection
Dim workspace As New MetadataWorkspace()
Return New EntityClient.EntityConnection(workspace, AppCommon.AppFunctions.AppGetSQLCon(True))
End Function
AppCommon.AppFunctions.AppGetSQLCon(True) is the function which returns the SqlConnection instance.
But it's not working, does anyone have a solution for this issue?
Finally I found the solution for connecting the entityframework without a connection string, So what you need to is the following:
change the constructor of the entity `DbContext' to recive the connection from a function like this:
Public Sub New()
MyBase.New(getEntityConnection(), False)
End Sub
Then inside that function return an entity-connection object from an open sqlconnection obbject as the following:
Public Shared Function getEntityConnection() As EntityConnection
Dim workspace As New MetadataWorkspace(New String() {"res://*/"}, New Assembly() {Assembly.GetExecutingAssembly()})
Return New EntityClient.EntityConnection(workspace, getSqlConnectionObject())
End Function
Now your entityframework is connected to the database without a connection string
I'm trying to connect to a SQL Server database that is not local. I have the Data Source and Initial Catalog - no issues. But need to change Integrated Security to False and insert SQL Server credentials.
Does anyone have any idea how put that in the connection string?
Also, does anyone know how to handle SecureStrings?
Here is my code so far:
Dim pwd As New SecureString("Password")
Dim cred As New SqlCredential("Username", pwd)
Dim sql As New SqlConnection("Data Source=OnlineServer;Initial Catalog=DatabaseName;Integrated Security=False")
Have a look at here: SQL Connection Strings to hopefully find which one you need. This will give you the basics.
To make the SQL account credentials confidential, you should encrypt the <connection strings> section in the web.config. to do so:
aspnet_regiis -pe "connectionStrings" -app "OnlineServer" -prov "DataProtectionConfigurationProvider"
Retrieving your connection string using ConfigurationManager will automatically decrypt the string
Dim connectionString = ConfigurationManager.ConnectionStrings("MyConnectionString").ConnectionString
Here is a Microsoft Link that explains it further.
I worked out what I needed to do and how to handle secure strings.
Here is a code snippet for anyone who struggles in the future:
Imports System.Data.SqlClient
Imports System.Net.Mail
Imports System.Security
Public Module secure
Public Function sql()
Dim pass As String = "Password"
Dim pwd As SecureString = New SecureString()
For Each ch As Char In pass
pwd.AppendChar(ch)
Next
pwd.MakeReadOnly()
Dim cred As New SqlCredential("SQL_Login", pwd)
Dim conn As New SqlConnection("Server=Database_Name;Initial Catalog=Database_Address;Integrated Security=False", cred)
Return conn
End Function
End Module
Public Class sqlCommunications
Dim sql As New SqlConnection
Dim sqlcom As New SqlCommand
Public Sub start()
sql = secure.sql
sqlcom.Connection = sql
sql.Open()
sql.Close()
End Sub
End Class
I've a C# 4.0 console application and a SQL Server 2008 database up and running on database server.
Does somebody know if there is a way to get the database properties (like "Database Read-Only" ) from the C# code?
My guess is it should be, but I was not able to find out the accurate solution.
Thanks in advance
There are at least two ways to do it. One is to use the Database Metadata tables the other to use SQL Management objects in both cases there's lot of data there so you really need to know what you want. For example this is how you would get the "Database Read-Only" property you mentioned.
Using a SqlCommand against the MetaData
using (SqlConnection cnn = new SqlConnection("Data Source=.;Initial Catalog=master;Integrated Security=SSPI;"))
{
SqlCommand cmd = new SqlCommand("SELECT is_read_only FROM sys.filegroups",cnn);
cnn.Open();
var isReadOnly = cmd.ExecuteScalar();
Console.WriteLine(isReadOnly );
}
Using SMO
using System;
using Microsoft.SqlServer.Management.Smo;
namespace SMO_Test
{
class Program
{
static void Main(string[] args)
{
Server srv = new Server(); //Connection to the local SQL Server
Database db = srv.Databases["master"];
foreach (FileGroup fg in db.FileGroups)
{
Console.WriteLine(fg.ReadOnly);
}
}
}
}
Please see the pic. and advise how I can change this connection string at run time. This is going to be on Client's computer and my application will need to change the name of computer after user enters it.
Thanks!
Just on the top of my head..
Dim adapter As New dbTestSharingDataSet.tblTestTableAdapter
Dim conn As New SqlConnection()
conn.ConnectionString = MyConnectionManager.ConnectionString
adapter.Connection = conn
Dim table As DataTable = adapter.GetData()
Not able to import application definition file!! Error: The metadata object with Name 'XYZ' and of Type 'LobSystemInstance' has a Property with Name 'DatabaseAccessProvider' that has either an invalid value or Type. Error was encountered at or just before Line: '10' and Position: '10'.
line 10 in ADF:
<"Property Name="DatabaseAccessProvider" Type="System.String">SqlOledb<"/Property>
Please give me ideas on how to display data from SQL Server 6.5 in Sharepoint?
The value of the node is invalid. You need to use SqlServer or OleDb. Check out this page for more information:
http://msdn.microsoft.com/en-us/library/ms550725(office.12).aspx
Im just starting on a similar task (so I found your unanswered question). I am trying to copy our documentation library in Sharepoint to an SQL db. Its not opening your file directly from SQL its using some c# code to setup a job which opens the sharepoint which may be what you are wanting.
There are two methods I have found so far:
One is to copy your data from sharepoint to a linked list in Access and then use the OLEDB methods in to open it.
Found here: C# Sync MS Access database to sql server
private static void BulkCopyAccessToSQLServer
(CommandType commandType, string sql, string destinationTable)
{
string connectionString = #"C:\Migration\Sharepoint Access SQL Batch Job\Database11.accdb";
using (DataTable dt = new DataTable())
{
string ConnStr = #"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\Migration\Sharepoint Access SQL Batch Job\Database11.accdb;Jet OLEDB:Database Password=password";
//using (OleDbConnection conn = new OleDbConnection(Settings.Default.CurriculumConnectionString))
using (OleDbConnection conn = new OleDbConnection(ConnStr))
using (OleDbCommand cmd = new OleDbCommand(sql, conn))
using (OleDbDataAdapter adapter = new OleDbDataAdapter(cmd))
{
cmd.CommandType = commandType;
cmd.Connection.Open();
adapter.SelectCommand.CommandTimeout = 240;
adapter.Fill(dt);
adapter.Dispose();
}
using (SqlConnection conn2 = new SqlConnection(Settings.Default.qlsdat_extensionsConnectionString))
using (SqlConnection conn2 = new SqlConnection(connectionString))
{
conn2.Open();
using (SqlBulkCopy copy = new SqlBulkCopy(conn2))
{
copy.DestinationTableName = destinationTable;
copy.BatchSize = 1000;
copy.BulkCopyTimeout = 240;
copy.WriteToServer(dt);
copy.NotifyAfter = 1000;
}
}
}
}
The other is to use the Microsoft.Sharepoint libraries and open your sharepoint directly from the c# then copy it into your SQL.
Found here: http://www.dotnetspark.com/kb/3573-fetching-lists-from-sharepoint-2010-site.aspx
using (SharePointclientObj.ClientContext ctx = new SharePointclientObj.ClientContext(clientContext))
{
//Get the site
SharePointclientObj.Web site = ctx.Web;
ctx.Load(site);
//Get Lists
ctx.Load(site.Lists);
//Query
ctx.ExecuteQuery();
//Fill List
foreach (SharePointclientObj.List list in site.Lists)
{
Console.WriteLine(list.Title);
}
}