有没有办法读取float类型 [英] Is there a way to read type float

问题描述

我使用填充读取器从数据库中读取数据，并且不希望显示float类型的值.我尝试逐步执行代码，但是当到达类型float时，应用程序停止了，请帮助

Hi, Im reading data from the database using populate reader and the values that are type float don''t want to display. i tried going through the code step by step but when it reaches type float the application stops, please help

private void populate_report(Bank e, IDataReader dr)
{
   e.bank_id = dr.GetInt32(0);
   e.bankind_date = dr.GetString(1);
   e.r200 = dr.GetFloat(2);
   e.r100 = dr.GetFloat(3);
}

推荐答案

尝试一下，

Try this,

private void populate_report(Bank e, IDataReader dr)
{
   e.bank_id = dr.GetInt32(0);
   e.bankind_date = dr.GetString(1);

   if(! dr.IsDBNull(dr.GetDouble(2))
   {
     e.r200 = dr.GetDouble(2);
   }

   if(! dr.IsDBNull(dr.GetDouble(3))
   {
     e.r100 = dr.GetDouble(3);
   }
}

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