此代码:为什么这个查询会给我“对象引用未设置为对象的实例”?
string SidFinch = "Unknown SidFinch";
String sql = @"SELECT SidFinch
FROM PlatypusDuckbillS
WHERE PlatypusSTARTDATE = :Duckbilldate AND
DuckbillID = :Duckbillid";
try {
using (OracleCommand ocmd = new OracleCommand(sql, oc)) {
ocmd.Parameters.Add("Duckbilldate", DuckbillDate);
ocmd.Parameters.Add("Duckbillid", DuckbillID);
SidFinch = ocmd.ExecuteScalar().ToString();
}
...失败了 “的ExecuteScalar” 行。它没有找到任何东西(对于我通过的ID,没有匹配的记录),但是这不应该导致这个问题,如果它?
只是说... dapper ... http://pastie.org/4003886 –