傳遞名稱從參數到LINQ查詢

Question

我可以做這樣的事情：

public int CountSpesific(string queryString, string namaKategori, string namaLaporan) 
{ 
    var results = GetSearchResults(queryString); //will result in list 
    var count = results.Where(o => o.KlasifikasiLaporan == namaLaporan 
            && o.[namaKategori] == true).Count(); 

    return count; 
} 

我想[namaKategori]變化，按參數

Answer 1

您可以使用反射來獲取屬性信息，然後獲取價值。在下面的代碼中YourType是lambda表達式中o的類型。

query = query.OrderBy(x => prop.GetValue(x, null)); 

public int CountSpesific(string queryString, string namaKategori, string namaLaporan) 
{ 
    System.Reflection.PropertyInfo prop = typeof(YourType).GetProperty(namaKategori); 

    var results = GetSearchResults(queryString); //will result in list 
    var count = results.Where(o => o.KlasifikasiLaporan == namaLaporan 
          && (bool)prop.GetValue(o) == true).Count(); 

    return count; 
}