asp.net 中的连接字符串问题

Question

private string conString = "Data Source=173.56.33.6;Database=musicapp;User ID=guest;Password=guest"; I was working on local database at that time my application was successfully interacting with mysql database.when put the database on server, my application still taking the old connection string and data is stored in local database and not on server. what is wrong?

Answer 1

I'd remove hard coded connection strings all together. There is a dedicated section of your config file for this very purpose:

<connectionStrings>
    <add name="MusicApp" connectionString="Data Source=173.56.33.6;Database=musicapp;User ID=guest;Password=guest;" />
</connectionStrings>

Which you can then read out:

string connection = ConfigurationManager.ConnectionStrings["MusicApp"].ConnectionString;

Answer 2

if Data Source=173.56.33.6; is the location of your server database try this instead Data Source=\173.56.33.6;

Answer 3

I think your problem is that you have the connection string hard-coded in your code (as a private string that you show above). A much better way is to store it in the config file, use Settings in VS and select ConnectionString as type.

Answer 4

Make sure whether you updated your connection string when you transfered your DB to server. In any case it is best to store connection string in web.config, so that you can modify it when ever your db is changed or transferred to another location. This change in connection string in your web.config wouldn't require you to rebuild your application. Although if your connection string is hard-coded in code, then you would require to rebuild your application when ever you change the connection string.