怎么样设置datarow里的某个字段类型

怎么样设置datarow里的某个字段类型

怎么用linq获取datarow的某个字段的count
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
public class SystemInTest
{
public static void main(String[] args)
{
try
{
InputStreamReader isr=new InputStreamReader(System.in);
BufferedReader br=new BufferedReader(isr);
FileWriter fw=new FileWriter("F:\\io\\abc.txt");
BufferedWriter bw=new BufferedWriter(fw);
System.out.println("输入你要输入到文件的内容，移over结束：");
String s;
while(true)
{

示例如下： dim a as datarow dim i as integer for i = 0 to a.table.columns.count - 1 response.write(a.table.columns(i).datatype.tostring()) response.write(" ") next