如何獲得CheckBoxList的值，並顯示

Question

我通過綁定我的CheckBoxList：

 string countrySQL = "Select id, CurrencyName From VirtualAccount_Currency"; 
     string[] param = { }; 
     object[] paramVal = { }; 

     return ClassDBQuery.ExecDataReader(countrySQL, param, paramVal); 

數據層：

 string selCurrSQL = "SELECT * FROM VirtualAccount WHERE MerchantMasterID = @id"; 

     string[] param = { "@id" }; 
     object[] paramVal = { currID }; 

     return ClassDBQuery.ExecDataReader(selCurrSQL, param, paramVal); 

這裏是我的代碼：

  DataTable currDT = new DataTable(); 
      currDT = ClassView.SelectCurrency(idses); 

      foreach (DataRow row in currDT.Rows) 
      { 
       foreach (ListItem item in currencyBox.Items) 
       { 
        if (item.Value == (row["CurrencyID"].ToString())) 
        { 
         item.Selected = true; 
         break; 
        } 
       } 
      } 

現在，當我運行我的代碼時，沒有遇到錯誤，但顯示了複選框的值。當我調試它時，系統只在第一個foreach中循環輸入第二個foreach，但沒有通過if語句... 我的代碼有什麼問題..？

謝謝...

Answer 1

嘗試下面，

 foreach (DataRow row in currDT.Rows) 
     { 
      foreach (ListItem item in currencyBox.Items) 
      { 
       // check here what you get 
       int currencyId= row.Field<int>("CurrencyID"); 

       if (item.Value == currencyId.ToString()) 
       { 
        item.Selected = true; 
        break; 
       } 
      } 
     } 

如果你的領域CurrencyID可以有NULL值，那麼，

int? currencyId= row.Field<int?>("CurrencyID"); 

if (currencyId! =null && item.Value == currencyId.ToString()) 
{ 
    item.Selected = true; 
    break; 
} 

Answer 2

試試這個： -

for (int j = 0; j < CheckBoxList1.Items.Count; j++) 
{ 
if (CheckBoxList1.Items[j].Text.Trim() ==row["CurrencyID"].ToString()) 
{ 
CheckBoxList1.Items[j].Selected = true; break; 
} 
} 

希望這有助於！