I have my connection string set up in the app config but I can not get it to find that connectionstring or even see that the connection name currency is in the collection.
I tried to add a version.
I have tried to adding the provider name to the string.
I have moved it in and out and in again of the path where the database and solution are located.
I have carefully made sure that I was pointed to the right location on my computer.
<connectionStrings>
<!-- CHANGE THIS to match where your solution and sqlite database are -->
<add name="currency" connectionString="Data Source=F:\CurrencyExercise\currency.db" />
</connectionStrings>
And then the code that calls the above.
public BaseDataAccess(string connectionName = "currency")
{
_connectionName = connectionName;
Connection = new SQLiteConnection(ConfigurationManager.ConnectionStrings[_connectionName].ConnectionString);
Connection.Open();
}
I would expect the code to actually pull back a SQLiteConnection object rather than erroring out.
Our web,config uses the same connection name for dev and production, with the only difference being the connection string itself.
I want to create Update-Database commands for dev and production that use a specified connection provided in the command.
I ran PM> get-help Update-Database -detailed but did not see any relevant examples for what I am trying to do.
My question: What params need to be in the ConnectionString? Obviously I need initial catalog, data source, user id and password. Not sure about the others, though. Do I even need the connection name?
update-database
-ConnectionStringName MyConn
-ConnectionString data source=10.10.10.20;
initial catalog=MyDatabase;
persist security info=False;
user id=my_db_user;
password=1234;
max pool size=200;
MultipleActiveResultSets=True"
providerName="System.Data.SqlClient
1) Bare minimum is:
DataSource / Server / Address / Addr / Network Address
Initial Catalog / Database
User Id / UID + Password / PWD or Integrated Security = true
2) Default values will be used for other args not specified:
https://msdn.microsoft.com/en-us/library/system.data.sqlclient.sqlconnection.connectionstring%28v=vs.110%29.aspx
3) ConnectionStringName is required only if you want connection string be taken from connection string defined in your web.config or app.config
Have you thought about using web.config transformations instead?
https://msdn.microsoft.com/en-us/library/dd465326%28v=vs.110%29.aspx
In your Web.Release.config file you would have an entry like:
<connectionStrings>
<add name="MyDbName" connectionString="Data Source=10.10.10.20; Initial Catalog=MyDatabase; User Id=my_db_user; Password=1234;"
xdt:Locator="Match(name)" xdt:Transform="SetAttributes" />
</connectionStrings>
Using xdt:Transform="SetAttributes" means that you don't need to specify the provider again, only the connection string will change in your transformed web.config
I would like to be able to handle the actual Connection String and the EF metadata connection string separately in the config (app.config, web.config) - the goal is to make the actual data-source more apparent.
I have complete control over creating the EF Context (yay IoC!), but don't want to hard-code any of the values. Preferably something like:
<add name="EfEntities"
connectionString="metadata=res://*/..;provider connection string=NO;.." />
<add name="EfEntities_Provider"
connectionString="data source=SERVER;initial catalog=DB;user id=ME" />
It would also be acceptable, and possibly better, is the deployed configs had only the conglomerated EF connection string - as long as it was built from separate properties in the source configs. (But this level of config transformation escapes me.)
I'm fine living with the conglomerated EF "connection string" for the Designer / Updater - the EDMX is in a separate project from the usage in the target assemblies that are deployed.
In my projects, I build the EF connection string myself in code and pass that to the Context object's constructor, like so:
void InitContext() {
String actualConnectionString = ConfigurationManager.ConnectionStrings["server123"].ConnectionString;
String efConnectionString = String.Format(CultureInfo.InvariantCulture, "metadata=res://*/..;provider connection string={0};.", actualConnectionString);
_context = new MyEFContext( efConnectionString );
}
I've decided to "go" with the idea behind Dai's answer. There may be problems with it (eg. the password better not contain a quote); but it works here on tests and feels more "visible" in config transformations.
The code looks about like:
var edmxMetadata = GetConnectionStringSetting("EfEntities_Metadata");
var providerConnection = GetConnectionStringSetting("EfEntities_Provider");
var edmxCS = string.Format(#"{0};provider={1};provider connection string=""{2}""",
edmxMetadata.ConnectionString,
providerConnection.ProviderName,
providerConnection.ConnectionString);
// (and by and by)
var context = new EfEntities(edmxCS);
Where:
<!-- just the metadata -->
<add name="EfEntities_Metadata"
connectionString="metadata=res://*/EfEntities.csdl|res://*/EfEntities.ssdl|res://*/EfEntities.msl"
providerName="System.Data.EntityClient" />
<!-- just the provider connection string -->
<add name="EfEntities_Provider"
connectionString="data source=SERVER;initial catalog=DB;user id=ME"
providerName="System.Data.SqlClient" />
In my data import application I want to allow the user to import data from as much different data sources as possible.
So what is the best way and what are the classes needed to be able to connect to different data sources and then get data from them via SQL queries?
E.g.
// 1. A class I need to allow the user to select the needed data source
ConnectionDialog dlg = new ConnectionDialog();
dlg.ShowDialog();
// 2. A class I need to access the data source using the connection string built above
DataConnection con = new DataConnection(dlg.builtConnectionString);
con.doStuff("SELECT * FROM test");
Currently I'm using the Microsoft connection dialog (http://archive.msdn.microsoft.com/Connection) for the first part. But I can't figure out how to use the connection strings returned by it. An OdbcConnection won't accept it (only tested with an Micrsosoft SQL connection string generated by the dialog). Is it even possible to achieve the above or will I be forced to use different classes for the second part?
Edit: I also want the user to be able to install his own drivers for data sources. I just don't know if ODBC or OleDB or anything else is the way to go and if/how I can use the connection dialog with this.
Use wrapping to list of DB sources. Add a connection strings to web.config for each type of DB connection (MSSQL , MYSQL and Oracle) with {{name}} string and then replace this string with the catalog selected by the user.
<connectionStrings>
<add name="mssql" connectionString="Data Source=.;Initial Catalog={{name}};Integrated Security=True" />
<add name="mysql" connectionString="server=localhost;user id=root; password=PASS;database={{name}};pooling=false" />
<add name="oracle" providerName="Oracle.DataAccess.Client" connectionString="Data Source={{name}};User Id=root;Password=PASS;" />
</connectionStrings>
Now use SqlConnection and MySqlConnection and OracleConnection classes . (You will need mysqlconnector and oracleconnector for these classes).
This line:
WebSecurity.InitializeDatabaseConnection(connectionStringName: "DefaultConnection", userTableName: "UserProfile", userIdColumn: "UserID", userNameColumn: "UserName", autoCreateTables: true);
Is throwing:
'System.ArgumentException' occurred in System.Data.dll but was not handled in user code
Additional information: Keyword not supported: 'metadata'.
My connection string is:
add name="DefaultConnection" connectionString="metadata=res://*/TalyllynModel.csdl|res://*/TalyllynModel.ssdl|res://*/TalyllynModel.msl;provider=System.Data.SqlClient;provider connection string="data source=***********;initial catalog=********;persist security info=True;user id=*********;password=********;MultipleActiveResultSets=True;App=EntityFramework"" providerName="System.Data.SqlClient" /></connectionStrings>
Not sure where it is im going wrong.
The string you passed is not a valid database connection string, it's an EF connection string that contains a SQL Server connection string in its provider connection string parameter. WebSecurity.InitializeDatabaseConnection expects a valid database connection string
To avoid parsing the connection string yourself, you can use the EntityConnectionStringBuilder class to parse the string and retrieve the database connection string from its ProviderConnectionString property
When this happened to me it was because the connection string had:
providerName="System.Data.SqlClient"
but it should be:
providerName="System.Data.EntityClient"
because as was said by the other answer, it is an EF connection string.
Just to add another possibility (which I encountered) - which might be the case if you're developing/maintaining an Azure WebApp, using a connection string saved in Azure's Application Settings.
Beside each connection string in the Application Settings is a dropdown for the connection string type - it's very easy to forget to set this to 'Custom' for Entity Framework values and leave it at the default (SQL Database) - which also causes the above error.
Here's some code I use, to extract the database name & server name from a connection string.
Notice how it checks if it's an Entity Framework connection string, and if so, it extracts the "provider connection string" part of that, which can then be passed into SqlConnectionStringBuilder:
If I didn't do this, I'd get that nasty "Keyword Not Supported: Metadata" error.
if (connectionString.ToLower().StartsWith("metadata="))
{
System.Data.Entity.Core.EntityClient.EntityConnectionStringBuilder efBuilder = new System.Data.Entity.Core.EntityClient.EntityConnectionStringBuilder(connectionString);
connectionString = efBuilder.ProviderConnectionString;
}
SqlConnectionStringBuilder builder = new SqlConnectionStringBuilder(connectionString);
DatabaseServer = builder.DataSource; // eg "MikesServer"
DatabaseName = builder.InitialCatalog; // eg "Northwind"
I'm going to throw out another answer, just in case someone else runs into this through the same weird scenario as I did.
To start with, as others have said, ADO connection strings and EF connection strings are different.
An ADO connection string contains a number of semicolon-separated fields, which can very from one connection type to another, but you usually see "data source=xxx", "initial catalog=yyy", etc. You will not see "metadata=zzz".
An EF connection string has the same structure, but it has a "metadata=zzz" and a "provider connection string=www", where "www" is an escaped ADO connection string.
So a normal format for an ADO connection string is:
data source=myserver;
initial catalog=mydatabase;
Persist Security Info=True;
User ID=myusername;
Password=mypassword;
MultipleActiveResultSets=True
While a normal format for an EF connection string is:
metadata=res://*/MyDbContext.csdl|
res://*/MyDbContext.ssdl|
res://*/MyDbContext.msl;
provider=System.Data.SqlClient;
provider connection string="
data source=myserver;
initial catalog=mydatabase;
Persist Security Info=True;
User ID=myusername;
Password=mypassword;
MultipleActiveResultSets=True;
application name=EntityFramework
"
Most folks who are running into this problem seem to have cut an EF connection string and pasted it into a place that needed an ADO connection string. In essence, I did the same thing, but the process wasn't as clear as all that.
In my case, I had a web application that used EF, so its web.config properly contained EF connection strings.
I published a deployment package, and the process prompts you for the connection strings to be used when deploying. These are stored in the deployment package's generated SetParameters.xml file.
I cut and pasted the EF connection strings into the publish dialog's entry fields.
I deployed the web application, tried to access it, and got the "Keyword not supported: metadata" error.
What I didn't realize is that MS's publish tool expected an ADO connection string, and that given it it would construct an EF connection string.
The result was that SetParameters.xml and my deployed web.config had connection strings that looked like this:
metadata=res://*/MyDbContext.csdl|
res://*/MyDbContext.ssdl|
res://*/MyDbContext.msl;
provider=System.Data.SqlClient;
provider connection string="
metadata=res://*/XxDbContext.csdl|
res://*/XxDbContext.ssdl|
res://*/XxDbContext.msl;
provider=System.Data.SqlClient;
provider connection string="
data source=myserver;
initial catalog=mydatabase;
Persist Security Info=True;
User ID=myusername;
Password=mypassword;
MultipleActiveResultSets=True;
application name=EntityFramework
"
""
In other words, the embedded provider connection string was an EF connection string and not an ADO connection string, so when EF tried to use it to connect to the database, it generated this error.
In other words, when you are pasting the connection strings into the publish dialogues, you need to paste a ADO connection string, not an EF connection string, even if what you have in the web.config you are copying from is an EF connection string.
You can extract an ADO connection string from the provider connection string field of an EF connection string, and that's what you will need, if you're using the same connection in the deploy as you did in local development.
For use in Azure Application Settings => Connection Strings:
If the connection string is generated by EF-designer be sure to replace &qout; with " in the string.
Check that provider=System.Data.SqlClient
Choose Type Custom in the dropdown
If the connection is for a model (Entity Framework) ensure that correct path to your model is used
Ex: A model "MyWebRoot/Models/MyModel.edmx" is configured as: metadata=res:///Models.MyModel.csdl|res:///Models.MyModel.ssdl|res://*/Models.MyModel.msl;
Hi,
In my opinion, the connection string for ADO.NET (in this
caseSqlConnection) can't use 'metadata. You're using the one specific
for Entity Framework. The ADO.NET one should be something like:
"data source=KAPS-PC\KAPSSERVER;initial catalog=vibrant;integrated security=True"
So, to sum it up, you need two separate connection strings, one for EF
and one for ADO.NET.
Souce: http://forums.iis.net/post/2097280.aspx
For Azure Web App, Connection string type has not "System.Data.EntityClient", Custom works good.
Dry This,
Remove metadata Info from your ConnectionString.
Change this.
<add name="DefaultConnection" connectionString="metadata=res://*/TalyllynModel.csdl|res://*/TalyllynModel.ssdl|res://*/TalyllynModel.msl;provider=System.Data.SqlClient;provider connection string="data source=***********;initial catalog=********;persist security info=True;user id=*********;password=********;MultipleActiveResultSets=True;App=EntityFramework"" providerName="System.Data.SqlClient" /></connectionStrings>
To
<add name="DefaultConnection" connectionString="data source=***********;initial catalog=********;persist security info=True;user id=*********;password=********;MultipleActiveResultSets=True;App=EntityFramework"" providerName="System.Data.SqlClient" /></connectionStrings>
Before i give My Solution let me explain something , I got this problem too , im using EntityFramework and Ado.net you cant use Entity framework Connection string in ADo and vice versa , so what i did was in the Web.config file i left the EF Connection string(Metadata one)
and in the Controller for ADO i Added the connection string which i got from the database(properties). add the ADO string like this :
SqlConnection sql = new SqlConnection();
sql.ConnectionString = #"Data Source=.\alienbwr;Initial Catalog=ABTO_POS;Integrated Security=True;Connect Timeout=30;Encrypt=False;TrustServerCertificate=False;ApplicationIntent=ReadWrite;MultiSubnetFailover=False";(dont use my string)
An old post but my solution,
Unfortunately these didn't solve it for me using Azure Functions talking to a separate project (class library) with an EDMX.
I had to edit the Context.CS class constructor replacing the
: base ("Entities")
with
: base (ConfigurationManager.ConnectionStrings["Entities"].ConnectionString)
Hopefully this might help someone else in need.
Check in this place
<add name="ConnectionString" connectionString="Data Source=SMITH;Initial Catalog=db_ISMT;Persist Security Info=True;User ID=sa;Password=#darksoul45;MultipleActiveResultSets=True;Application Name=EntityFramework"
providerName="System.Data.SqlClient" />
As you can see there's a two connection string one for ADO and another for the Login System or whatever you want. In my case, ConnectionString is for Login system so I've used that in:-
SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString);
SqlCommand cmd = null;
SqlDataReader dr = null;
protected void Page_Load(object sender, EventArgs e)