Question : SQL Query

Experts
please tell me what is the correct conversion of the

string query = "select count(CustomerID) from Table_InvoiceCustomer where Name like ' % "+textBox1.Text+ " % '  " ;   (this is correct I know ) but my question is
if I convert the above query by parameterizid query then what will be the proper conversion


string query = "select count(CustomerID) from Table_InvoiceCustomer where Name like '%@parameter1%' ";
this I tried but not working .
Please suggest.
Thanking you
Anindya

Answer : SQL Query

string query = "select count(CustomerID) from Table_InvoiceCustomer where Name like '%' + @parameter1 + '%' ";