Question

我正在尝试从argparse获取结果，但是我被困住了，不知道该怎么办。我有DataTable，由于我的结果存储在public static DataTable VratiKorisnike()中，因此需要返回DataTable resultTable作为结果。到目前为止，我的功能在这里

resultTable

当我向public static DataTable VratiKorisnike() { List<Korisnik> lstADUsers = new List<Korisnik>(); string sDomainName = "saos"; string DomainPath = "LDAP://" + sDomainName; string output = @"C:\output.txt"; DirectoryEntry searchRoot = new DirectoryEntry(DomainPath); DirectorySearcher search = new DirectorySearcher(searchRoot); search.Filter = "(&(objectClass=user)(objectCategory=person))"; search.PropertiesToLoad.Add("samaccountname"); search.PropertiesToLoad.Add("usergroup"); search.PropertiesToLoad.Add("displayname"); search.PropertiesToLoad.Add("userAccountControl"); search.PropertiesToLoad.Add("PasswordExpirationDate"); //search.PropertiesToLoad.Add("DomainGroup"); DataTable resultsTable = new DataTable(); resultsTable.Columns.Add("samaccountname"); resultsTable.Columns.Add("usergroup"); resultsTable.Columns.Add("displayname"); resultsTable.Columns.Add("userAccountControl"); resultsTable.Columns.Add("PasswordExpirationDate"); //resultsTable.Columns.Add("DomainGroup"); SearchResult result; SearchResultCollection resultCol = search.FindAll(); if (resultCol != null) { for (int counter = 0; counter <= (resultCol.Count - 1); counter++) { string UserNameEmailString = string.Empty; result = search.FindOne(); if ((result.Properties.Contains("samaccountname") && result.Properties.Contains("usergroup"))) { Korisnik korisnik = new Korisnik(); korisnik.Ime = ((string)(result.Properties["samaccountname"][0])); korisnik.Prezime = ((string)(result.Properties["displayname"][0])); korisnik.AccountExpired = (DateTime)result.Properties["userAccountControl"][0]; korisnik.PassNevExp = ((bool)result.Properties["PasswordExpirationDate"][0]); korisnik.DomenskaGrupa = ((string)(result.Properties["DomainGroup"][0])); DataRow dr = resultsTable.NewRow(); dr["samaccountname"] = korisnik.Ime; dr["displayname"] = korisnik.Prezime; dr["userAccountControl"] = korisnik.AccountExpired; dr["PasswordExpirationDate"] = korisnik.PassNevExp; dr["DomainGroup"] = korisnik.DomenskaGrupa; resultsTable.Rows.Add(dr); lstADUsers.Add(korisnik); } } var json = JsonConvert.SerializeObject(resultCol, Formatting.Indented); var res = json; Console.WriteLine(resultCol); Console.ReadLine(); File.WriteAllText(output, json); } return resultsTable; }调用函数时出现错误

Foreach语句无法对'DataTable'类型的变量进行操作因为“ DataTable”不包含针对的公共实例定义 'GetEnumerator'

Main

我尝试这样的事情：

foreach (Korisnik korisnik in VratiKorisnike())
{
    Console.WriteLine(korisnik);
}

错误为foreach(DataTable dt in VratiKorisnike()) { Console.WriteLine(dt); } 您知道如何解决此问题吗？

Answer 1

要将DataTable用作IEnumerable<DataRow>，您需要在垂直Linq To DataSet上使用AsEnumerable

foreach (DataRow row in VratiKorisnike().AsEnumerable())
{
    string displayName = row.Field<string>("displayname")
    ...
}

Answer 2

您需要使用Rows属性：

foreach (var korisnik in VratiKorisnike().Rows)

它表示一个DataTable的行的集合，和。实际上，它会像这样编译，并且正如您所见，由于GetEnumerator，您可以在其中使用循环：

IEnumerator enumerator = VratiKorisnike().Rows.GetEnumerator();
try
{
    while (enumerator.MoveNext())
    {
        DataRow value = (DataRow)enumerator.Current;
        Console.WriteLine(value);
    }
}
finally
{
    IDisposable disposable = enumerator as IDisposable;
    if (disposable != null)
    {
        disposable.Dispose();
    }
}

“ DataTable”不包含“ GetEnumerator”的公共实例定义

2 个答案: