هنگامی که از زریق کدنویسی میخوام جدول درست کنم خطای زیر میده

کد ساخت جدول:

 string Connection = DAL.Utility.Connection_String();
            string namedatabase = "USE[" + txt_name_database.Value + "]";
            SqlConnection connect = new SqlConnection(Connection);
            string Query = namedatabase + txtfiledatabase.Value;
            SqlCommand command = new SqlCommand(Query, connect);
            connect.Open();
            command.ExecuteNonQuery();
            connect.Close(); 

محتویات کوئری:

 
  /****** Object:  StoredProcedure [dbo].[Validate_User]    Script Date: 06/10/1396 02:05:54 ب.ظ ******/
 
CREATE  PROCEDURE [dbo].[Validate_User] 
	@username_user NVARCHAR(50),
	@pass_user NVARCHAR(50)
AS
BEGIN
	SET NOCOUNT ON;
	DECLARE @ID_user INT, @LastLoginDate DATETIME
	
	SELECT @ID_user = ID_user, @LastLoginDate = LastLoginDate
	FROM Users WHERE username_user = @username_user AND [pass_user] = @pass_user
	 
	IF @ID_user IS NOT NULL
	BEGIN
		IF NOT EXISTS(SELECT ID_user FROM UserActivation WHERE ID_user = @ID_user)
		BEGIN 
			UPDATE Users
			SET LastLoginDate =  GETDATE()
			WHERE ID_user = @ID_user
			SELECT @ID_user [UserId] -- User Valid
  
		END
		ELSE
		BEGIN
			SELECT -2 -- User not activated.
		END
	END
	ELSE
	BEGIN
		SELECT -1 -- User invalid.
	END
END