Can anyone explain how these work in relation to setting and application setting files. I know that application settings can not be modified programatically at runtime, although they can be changed in the XML.
(I did try adding a set method in my settings.cs to allow me to update the application scoped databaseconnect ion string, but VS was not being foole d by that). However, I want to change my DatabaseConnect ion string (to point at a different database), but the property is an application and not a user one.
My objective is simple I'd like the user to be able to open a different sdf (database file) from the one currently in use, and for that to then be saved for next time.
4 1334
Hi,
Why didn't hard-code the connection string for a SqlDataSource and modify it using a OpenFileDialog.
Hi,
Thank you! I did think of that but VS created the connection for me and I assume pointed the DataSet to it. How would\where would I modify my existing connection ? I can't find the SqlServer connection object that VS MUST (I guess) have created?
.
No instead of drag and drop the SqlDataSource,
create a class that accept either the name of the database or the absolute location of the database, i did some thing like this before. -
public class DataClass
-
{
-
private SqlDataSource sqlDataSource;
-
public DataClass(string name)
-
{
-
sqlDataSource = new SqlDataSource();
-
sqlDataSource.ConnectionString = @"Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\" + name + ";Integrated Security=True;User Instance=True";
-
}
-
-
public SqlDataSource SqlDataSource
-
{
-
get { return sqlDataSource; }
-
}
-
}
-
now you can pass the name of the database and re-bind your control Note: you have to store your queries as stored procedures in each database, or you have to store a very long dictionary, and that makes no sense.
OK, i did it for .mdf database and i'm not familiar with db, and you're using .sdf db. I don't know if there will be a problem ??!
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