i have problem in my c# when i connect it to our server and try to create a new Sql Table. i found this error. pls help me!

The error message is pretty explicit - your log in to SQL failed, because the SQL server does not like your Windows authorization. Use an explicit SQL username and password instead.

Try setting up a connection in VS with the Server Explorer pane:
1) Open Server Explorer.
2) Right click "Data connections" and select "Add connection"
3) In the dialog that follows, select your DataSource, and database, specify the security info, and press the "Test connection" button.
4) When the connection works, press "OK"
5) Highlight your database in the Server Explorer pane, and look at the Properties pane. A working example of the connection string will be shown, which you can copy and paste into your app or config file.