このSQL文をC＃でlinqに変換するにはどうすればよいですか？

Question

は、C＃でのLINQにこのSQL文を変換するために私を助けてください：

string cmd = "SELECT * FROM dbo.Personnel WHERE (dbo.Personnel.FName LIKE 
    @FName + '%' AND dbo.Personnel.LName LIKE @LName +'%')"; 

if (objPPersonnel.PersonnelCode != 0) 
{ 
    cmd += "AND (dbo.Personnel.PersonnelCode =@PersonnelCode) "; 
} 

if (objPPersonnel.NationalCode != "0") 
{ 
    cmd += "AND (dbo.Personnel.NationalCode =@NationalCode) "; 
} 

if (objPPersonnel.OrganizationPostId > 0) 
{ 
    cmd += "AND (dbo.Personnel.OrganizationPostId =@OrganizationPostId) "; 
} 

Answer 1

私は、これはあなたが求めているものであるかどうかわからないんだけど：

var query = from c in dbContext.Personnel 
       where c.Personnel.LName.Contains(parLName) 
       $$ ((c.Personnel.PersonnelCode = parPersonnelCode && parPersonnelCode != 0)||parPersonnelCode == 0) 
       $$ ((c.Personnel.NationalCode = parNationalCode && parNationalCode != 0)||parNationalCode == 0) 
       $$ ((c.Personnel.OrganitationPostId = parOrganitationPostId && parOrganitationPostId > 0)||parOrganitationPostId == 0) 
       select c; 

Answer 2

​​

Answer 3

をこれが行います。

var result = Personnel 
    .Where(p => 
    { 
     p.FName.IndexOf(firstName) == 0 
     && p.LName.IndexOf(lastName) == 0 
     && 
     (
      (p.PersonnelCode == personnelCode && objPPersonnel.PersonnelCode != 0) || 
      (p.NationalCode == nationalCode && objPPersonnel.NationalCode != 0) || 
      (p.OrganizationPostId == organizationPostId && objPPersonnel.OrganizationPostId != 0) 
     ) 
    });