public partial class SignUp : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void btSignup_Click(object sender, EventArgs e)
    {
        if (tbUname.Text != "" & tbPass.Text != "" && tbName.Text != "" && tbEmail.Text != "" && tbCPass.Text != "")
        {
            if (tbPass.Text == tbCPass.Text)
            {
                String CS = ConfigurationManager.ConnectionStrings["Database_AvaliacaoConnectionString1"].ConnectionString;
                using (SqlConnection con = new SqlConnection(CS))
                {
                    SqlCommand cmd = new SqlCommand("insert into Users Values('" + tbUname.Text + "','" + tbPass.Text + "','" + tbEmail.Text + "','" + tbName.Text + "','')", con);
                    con.Open();

                    cmd.ExecuteNonQuery();
                    lblMsg.Text = "Registration Successfull";
                    lblMsg.ForeColor = Color.Green;
                   // Response.Redirect("~/Signin.aspx");
                }
            }
            else
            {
                lblMsg.ForeColor = Color.Red;
                lblMsg.Text = "Passwords do not match";
            }
        }
        else
        {
            lblMsg.ForeColor = Color.Red;
            lblMsg.Text = "All Fields Are Mandatory";

        }
    }
}

在users表中，我得到了以下值

[Uid] int IDENTITY (1,1) PRIMARY KEY, 
[Username] NVARCHAR(MAX) NULL, 
[Password] NVARCHAR(MAX) NULL, 
[Email] NVARCHAR(MAX) NULL, 
[Name] NVARCHAR(MAX) NULL

我尝试注册时出现以下错误：
system.data.sqlclient.sqlexception:'只有在使用列列表并且启用了identity\U insert时，才能为表'users'中的标识列指定显式值。'
出于某种原因，它不允许我添加值。