对于asp .net（C＃）中的循环 [英] For loop in asp .net (C#)

问题描述

你好每一个



我有一个2100记录以上的DataTable。我想运行一个500个数据的循环。



因此，如果我有一个1000个数据，那么我的循环将是2个，或者我有一个1500个数据，而不是我的循环是b / 3


i已经完成了这么多代码但是不起作用



在下面的代码中dtRecepient是数据表

Hello Every one

I have a DataTable of 2100 records or more. I want to run a loop of 500 data.

So if i have a 1000 data than my loop will be of 2 or i have a 1500 data than my loop will be of 3

i have done this much of code but does't work

In below code dtRecepient is DataTable

for (int recepient = 0; recepient < dtRecepients.Rows.Count; recepient++)
{

}

推荐答案

如果你的意思是你必须做多少500个循环，比如说， n 然后在这里记录：

If you mean how many loops of 500 you have to do on, say, n records then here you are:

int loops = n / 500;
int spare = n % 500;

备用为您提供剩余记录的数量，如果 n 是不完全被500整除（例如 n = 2100 => spare = 100 ）。

spare gives you the number of the remaining records if n is not exactly divisible by 500 (e.g. n=2100 => spare=100).

int total = dtRecepients.Rows.Count;
int iterations = total/500;

for (int recepient = 1; recepient <= iterations; recepient++)
{

}

使用这种方法获得所需的输出，



int startIndex，endIndex，totalCount;

totalCount = dtRecepients.Rows.Count;

startIndex = 0; endIndex = 500;

if（totalCount< endIndex）

{

for（startIndex; startIndex}

否则

{

DataTable dtDataTemp = dtRecepients.Clone（）;

while（endIndex< totalCount）

{

dtDataTemp.Rows.Clear（）;

if（endIndex> totalCount）

{endIndex = totalCount;}

for（int stIndex = startIndex; stIndex< endIndex; stIndex ++）

{

//做你的东西

}

startIndex = endIndex;

endIndex + = 500;

}

if（startIndex< totalCount && totalCount< endIndex）

{

dtDataTemp.Rows.Clear（）;

if（endIndex> totalCount）

{endIndex = totalCount; } $ / b
for（int stIndex = startIndex; stIndex< endIndex; stIndex ++）

{

//做你的东西

}

startIndex = endIndex;

endIndex + = 500;

}

}

}

其他

{}

use this approach to get the desired output,

int startIndex, endIndex, totalCount;
totalCount = dtRecepients.Rows.Count;
startIndex = 0; endIndex = 500;
if (totalCount < endIndex)
{
for(startIndex; startIndex }
else
{
DataTable dtDataTemp = dtRecepients.Clone();
while (endIndex < totalCount)
{
dtDataTemp.Rows.Clear();
if (endIndex > totalCount)
{ endIndex = totalCount; }
for (int stIndex = startIndex; stIndex < endIndex; stIndex++)
{
//do your stuff
}
startIndex = endIndex;
endIndex += 500;
}
if (startIndex < totalCount && totalCount < endIndex)
{
dtDataTemp.Rows.Clear();
if (endIndex > totalCount)
{ endIndex = totalCount; }
for (int stIndex = startIndex; stIndex < endIndex; stIndex++)
{
//do your stuff
}
startIndex = endIndex;
endIndex += 500;
}
}
}
else
{ }

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