Question

Possible Duplicate:
System.Data.SqlClient.SqlException A network-related or instance-specific error

i have winform application in c# which connect to my own db and its working fine my current sql connection string is :

SqlConnection con = new SqlConnection("Data Source=ITPL_PC1;Initial Catalog=Data_Project;Persist Security Info=True;user id=sa;Password=insforia"); 

but when i am taking this winform to another computer its not working .. then i am changing my connection string to :

SqlConnection con = new SqlConnection("Data Source=192.168.0.28\\ITPL_PC1;Initial Catalog=Data_Project;Persist Security Info=True;user id=sa;Password=insforia"); 

but its not working …

i have changed all the settings in sql server of remote access but still it showing an error

Sql Exception was unhandled 
A network-related or instance-specific error occurred while establishing a connection      to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified) 

is my connection string is wrong? what it should be?

pls help me out

Answer 1

Data Source=ITPL_PC1

Identifies a server called ITPL_PC1. You’re connecting to the default instance on this server.

Data Source=192.168.0.28\ITPL_PC1

Identifies an instance called ITPL_PC1 running on a server with IP address 192.168.0.28. We don’t know the name of this server.

If the instance you want to connect to is the default instance on ITPL_PC1, then the first version should always work (provided ITPL_PC1 can be resolved).