1
這是我用來從數據庫中使用MerchantID獲取LocationID的代碼。我從Fill數據集部分獲得一個例外。請幫助我,。錯誤是將數據類型varchar轉換爲bigint。將數據類型varchar轉換爲bigint時出錯。內聯sql語句
public DataSet getLocationID(long MerchantID)
{
//long LOCID = null;
try
{
SqlParameter[] parameters = new SqlParameter[]
{
new SqlParameter("@merchantID",MerchantID)
};
string strCommandText = "Select LocationID from Merchant_Location where MerchantID ='@merchantID' order by LocationID ASC";
Debug.WriteLine(strCommandText);
DataSet pds = new DataSet();
SqlHelper.FillDataset(DbConnString, System.Data.CommandType.Text, strCommandText, pds, new string[] { "LocID" }, parameters);
return pds;
}
catch (Exception ex)
{
//LogError("Error Occurred When Retrieving LocationID: " + MerchantID.ToString(), ex);
return null;
}
}
是LocationID可空? – 2010-08-31 23:35:30
Merchant_Location表中的MerchantID字段是varchar字段嗎? – ngroot 2010-08-31 23:35:50