获取in datareader int值时哪个更好？ [英] Which is better to use when getting the in datareader int value?

问题描述

代码如下：

The code would be like:

string Acc_ID;

//[0] is the ID whereas the [2] is the Account type(Admin, User, etc.)
Acct_ID = rdr.GetInt32[0] + " " + rdr.GetString[2];
lblID.Text = Acc_ID;

我应该这样做，还是使用Cast来让它更快地执行？谢谢谁能提供帮助！对不起，如果这听起来很烦人我只是新来的C＃。



我尝试过：



这是我试过的：rdr.GetInt32 [0]，rdr.GetInt32 [0] .ToString（），Convert.ToString（rdr.GetInt32 [0]）和（int）rdr.GetInt32 [0]。

Should I make it just like that or use Cast on them to make it execute faster? Thank you whoever can help! Sorry if it sounds annoying I'm just new to C#.

What I have tried:

Here is what I tried: rdr.GetInt32[0], rdr.GetInt32[0].ToString(), Convert.ToString(rdr.GetInt32[0]), and (int)rdr.GetInt32[0].

推荐答案

你不需要强制转换，.GetInt32返回一个32位整数，.String返回一个字符串。



如果需要将字符串转换成字符串，那么你需要的唯一一个转换是。

You do not need to cast, .GetInt32 returns an 32 bit integer, .String returns a string.

The only cast you need is the one to convert the int to a string if you need it as a string.

Acct_ID = rdr.GetInt32[0].ToString + " " + rdr.GetString[2];

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