獲取通用對象的類名稱

Question

我有一個程序，它以電子表格作爲輸入，並且如果有任何錯誤，則將錯誤轉儲回單獨的電子表格，原始數據由用戶輸入並顯示錯誤消息。

要保存錯誤的記錄及其錯誤消息，我有一個Dictionary對象，其中可能包含兩種類型的對象之一作爲關鍵字。它將擁有一個DataRow對象或一個名稱爲ZipCodeTerritory的實體框架模型對象。

因爲我有可能數據輸入錯誤（即111/2/1980爲日期），我需要創建我用來填充電子表格中的單獨的錯誤類，我需要到DataRow/ZipCodeTerritory鍵轉換成這特殊錯誤類。但是，在我這樣做之前，我需要確定我正在使用哪種類型。我在下面使用的方法無法使用，或者使用DataRow或ZipCodeTerritory對象。任何人都知道更好的方法來確定一個通用對象的類型？

C＃

//Definition of the Dictionary I'm using to hold the errored records/messages 
private static Dictionary<object, string> _errors = new Dictionary<object, string>(); 

//Snippet of code to show how I'm adding one of the ZipCodeTerritory objects 
//"record" object is of type ZipCodeTerritory 
if (string.IsNullOrEmpty(record.LastUpdateId)) 
{ 
    //Add to error list 
    _issues++; 
    _errors.Add(record, "Missing last update Id"); 
    continue; 
} 

//Section of code that tries to separate key/value and determine type 
foreach (KeyValuePair<object, string> item in errors) 
{ 
    //Use custom class in case of data errors 
    //resulting from bad input on spreadsheet 
    ZipCodeError zip; 

    //Determine type and separate key and value 
    Type type = item.Key.GetType(); 
    if (type.GetType().Name.Equals("DataRow")) 
    { 
     zip = new ZipCodeError((DataRow)item.Key); 
    } 
    else if (type.GetType().Name.Equals("ZipCodeTerritory")) 
    { 
     zip = new ZipCodeError((ZipCodeTerritory)item.Key); 
    } 
    else 
    { 
     //Code always falls through to this.... 
     zip = new ZipCodeError(); 
    } 

ZipCodeError

public class ZipCodeError 
{ 
    //Create generic object properties just in case of 
    //typos or any other unforseen input errors from the spreadsheet 
    public object ChannelCode { get; set; } 
    public object DrmTerrDesc { get; set; } 
    public object IndDistrnId { get; set; } 
    public object StateCode { get; set; } 
    public object ZipCode { get; set; } 
    public object EndDate { get; set; } 
    public object EffectiveDate { get; set; } 
    public object LastUpdateId { get; set; } 
    public object LastUpdateDate { get; set; } 
    public object ErrorCodes { get; set; } 
    public object Status { get; set; } 
    public object Id { get; set; } 

    public ZipCodeError(){} 

    public ZipCodeError(DataRow row) 
    { 
     this.ChannelCode = row[0]; 
     this.DrmTerrDesc = row[1]; 
     this.IndDistrnId = row[2]; 
     this.StateCode = row[3]; 
     this.ZipCode = row[4]; 
     this.EndDate = row[5]; 
     this.EffectiveDate = row[6]; 
     this.LastUpdateId = row[7]; 
     this.ErrorCodes = row[8]; 
     this.Status = row[9]; 
     this.Id = row[10]; 
    } 

    public ZipCodeError(ZipCodeTerritory master) 
    { 
     this.ChannelCode = master.ChannelCode; 
     this.DrmTerrDesc = master.DrmTerrDesc; 
     this.IndDistrnId = master.IndDistrnId; 
     this.StateCode = master.StateCode; 
     this.ZipCode = master.ZipCode; 
     this.EndDate = master.EndDate; 
     this.EffectiveDate = master.EffectiveDate; 
     this.LastUpdateDate = master.LastUpdateDate; 
     this.LastUpdateId = master.LastUpdateId; 
     this.ErrorCodes = master.ErrorCodes; 
     this.Status = master.Status; 
     this.Id = master.Id; 
    } 
}  

Answer 1

使用is關鍵字

if (item.Key is DataRow) 
{ 
    zip = new ZipCodeError((DataRow)item.Key); 
} 
else if (item.Key is ZipCodeTerritory) 
{ 
    zip = new ZipCodeError((ZipCodeTerritory)item.Key); 
} 
else 
{ 
    ... 
} 

Answer 2

你在你的imple有一個額外的GetType()心理狀態。你總是讓RuntimeType這是Type當你在Type

//Determine type and separate key and value 
Type type = item.Key.GetType(); 
if (type.Name.Equals("DataRow")) 
{ 
    zip = new ZipCodeError((DataRow)item.Key); 
} 
else if (type.Name.Equals("ZipCodeTerritory")) 
{ 
    zip = new ZipCodeError((ZipCodeTerritory)item.Key); 
} 
else 
{ 
    ... 
}