My connection string using Windows authentication for SQL Server doesn't work

Question

I'm having problems whenever I run my application, it says that the connection is wrong. The error is User '' has failed.

I think I didn't specify the user id and password but I don't know what is the user id and my password.

Here's my connection string

public SqlConnection con = new SqlConnection("Data Source=.;Initial Catalog=PayrollDB;Persist Security Info=True;");

Thanks in advance!

Answer 1

public SqlConnection con = new SqlConnection("Data Source=.;Initial Catalog=PayrollDB;Persist Security Info=True;Integrated Security=true;");

将Intergrated Security = true添加到连接字符串。

Answer 2

You need to add the connection string attribute: Integrated Security = true . And this will work correctly.

Answer 3

要允许Windows身份验证，您需要在连接字符串中以tru的形式添加集成安全性集，如下所示：

public SqlConnection con = new SqlConnection("Data Source=.;Initial Catalog=PayrollDB;Persist Security Info=True;Intergrated Security=true;");