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C# if-else vs try-catch 效能比較[在迴圈800次時相差100倍] – jashliao部落格

2021/12/25

C# if-else vs try-catch 效能比較[在迴圈800次時相差100倍]

try-catch

   while (DataReader.Read())
   {
       Strid = DataReader[“id”].ToString();
       Struid = DataReader[“uid”].ToString();
       Strname = DataReader[“name”].ToString();
       Strtype = DataReader[“type”].ToString();
       Strstatus = DataReader[“status”].ToString();

       if (Strstatus == “1”)
       {
           Strstatus = “Enable”;
       }
       else
       {
           Strstatus = “Disable”;
       }

       try
       {
           Stravailable_date_start = Convert.ToDateTime(DataReader[“available_date_start”].ToString()).ToString();
           Stravailable_date_end = Convert.ToDateTime(DataReader[“available_date_end”].ToString()).ToString();
       }
       catch
       {
           Stravailable_date_start = “”;
           Stravailable_date_end = “”;
       }
       dgvSub0102_01.Rows.Add(false, Strid, Struid, Strname, Strtype, Strstatus, Stravailable_date_start, Stravailable_date_end);
   }

if-else

while (DataReader.Read())
   {
       Strid = DataReader[“id”].ToString();
       Struid = DataReader[“uid”].ToString();
       Strname = DataReader[“name”].ToString();
       Strtype = DataReader[“type”].ToString();
       Strstatus = DataReader[“status”].ToString();

       if (Strstatus == “1”)
       {
           Strstatus = “Enable”;
       }
       else
       {
           Strstatus = “Disable”;
       }

       if ((Strname != “”) && (Strtype!=””))//try
       {
           Stravailable_date_start = Convert.ToDateTime(DataReader[“available_date_start”].ToString()).ToString();
           Stravailable_date_end = Convert.ToDateTime(DataReader[“available_date_end”].ToString()).ToString();
       }
       else//catch
       {
           Stravailable_date_start = “”;
           Stravailable_date_end = “”;
       }
       dgvSub0102_01.Rows.Add(false, Strid, Struid, Strname, Strtype, Strstatus, Stravailable_date_start, Stravailable_date_end);
   }