DataTable举例

 // clrTest1.cpp: 主项目文件。

 #include "stdafx.h"

 using namespace System;
 using namespace System::Data;

 int main(array<System::String ^> ^args)
 {
     DataTable^ dtable = gcnew DataTable("myTable");
     DataColumn^ column;
     //col 1
     column = gcnew DataColumn("begin_time",System::DateTime::typeid);
     dtable->Columns->Add(column);
     // col 2
     column = gcnew DataColumn("name",  String::typeid);
     dtable->Columns->Add(column);
     // col 3
     column = gcnew DataColumn("dscrib",  String::typeid);
     dtable->Columns->Add(column);
     //primary key
     array<DataColumn^>^ Keys = gcnew array<DataColumn^>();
     Keys[] = dtable->Columns["name"];
     Keys[] = dtable->Columns["dscrib"];
     dtable->PrimaryKey = Keys;
     //dataset
     DataSet^ dset  = gcnew DataSet();
     dset->Tables->Add(dtable);
     //add dataRow
     String^ str = Console::ReadLine();
     int lines ;
     try
     {
         lines = Convert::ToInt32(str);
     }
     catch (...){}
     DataRow^ row ;
     for(int i =  ; i < lines ; i ++)
     {
         row = dtable->NewRow();
         DateTime^ dtime  = DateTime::Now;
         dtime = dtime->AddHours(i);
        row["begin_time"] = dtime ;
        row["name"] = "John_"+(i+);
        row["dscrib"] = "it_is_row_"+(i+);
        dtable->Rows->Add(row);
     }
     //out-put
     for(int i =  ; i < dtable->Rows->Count; i ++)
     {
         row = dtable->Rows[i];
         for(int j =  ; j < dtable->Columns->Count; j ++)
         {
             Console::WriteLine(row[j]+"\t");
         }
         Console::WriteLine();
     }
     Console::ReadKey();
     return ;
 }