ADO.NET :: LINQ Connection To DBF File Using VS2008 On Windows Xp With Sp2
Jan 27, 2011
I am trying to connect linq to dbf file. I am using VS2008 on windows xp with sp2. For most part I can create a connection and see the tables in the server explore, but when I try to drag and drop a table onto the .dbml i get "The selected object is an unsupported data provider". I have been trying to use FoxPro to connect to the DBF. In VS in the Data Connections I go to modify the connection and hit test and the connection says success, but no tables appear.
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Mar 25, 2010
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May 25, 2010
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[code]....
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[code]...
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[Code]...
i tired this but its giving error
[Code]....
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Dec 25, 2010
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partial class MisaghDataContext
{
partial void OnCreated()
{
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ConfigurationManager.ConnectionStrings["MisaghDBConnectionString"].ConnectionString;
}
// or
public partial class MisaghDataContext
{
public MisaghDataContext() : base (ConfigurationManager.ConnectionStrings["MisaghDBConnectionString"].ConnectionString)
{
OnCreated();
}
}
}
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<configuration>
<connectionStrings>
<add name="MisaghDBConnectionString" connectionString="Data Source=NAZLIN-HP;Initial Catalog=MisaghDB;Integrated Security=True"
providerName="System.Data.SqlClient" />
</connectionStrings>
</configuration>
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[global::System.Data.Linq.Mapping.DatabaseAttribute(Name="MisaghDB")]
public partial class MisaghDataContext : System.Data.Linq.DataContext
{
private static System.Data.Linq.Mapping.MappingSource mappingSource = new AttributeMappingSource();
public NorthwindDataContext() :
base(global::WindowsFormsApplication2.Properties.Settings.Default.NorthwindConnectionString, mappingSource)
{
OnCreated();
}
public NorthwindDataContext(string connection) :
base(connection, mappingSource)
{
OnCreated();
}
public NorthwindDataContext(System.Data.IDbConnection connection) :
base(connection, mappingSource)
{
OnCreated();
}
public NorthwindDataContext(string connection, System.Data.Linq.Mapping.MappingSource mappingSource) :
base(connection, mappingSource)
{
OnCreated();
}
public NorthwindDataContext(System.Data.IDbConnection connection, System.Data.Linq.Mapping.MappingSource mappingSource) :
base(connection, mappingSource)
{
OnCreated();
}
............}
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Apr 18, 2010
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<globaoSettings>
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[code]...
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Jul 29, 2010
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May 31, 2010
I want to use from two db connection in one linq query
My sample is:
int a=1;
if(a==1)
DataClasses1DataContext1 db = new DataClasses1DataContext1();
else
DataClasses1DataContext2 db = new DataClasses1DataContext2();
var q =
from c
in db.F_Groups
select c;
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I want if a=2 then db connection = DataClasses1DataContext2
but this code is error.
db connections is completely same but in two deferent class a db connection is sql and another is oracle
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Sep 9, 2010
I have a solution which uses Linq to SQL Data Classes to acced the db. I have a project for my domain objects in my solution, which is a class library and has the dbml file. When I set up the dmbl using the wizard, Visual Studio created anapp.config file on that project with the connection string. It also creatting asettings file with the same info. I've noticed that if I change the connection string in the settings file, the app.config gets updated, which is the expected behaviour.
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