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我有從MSDN樣本和代碼是:CopyToDataTable不工作....產生錯誤
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace LINQTest
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
Item[] items = new Item[]
{ new Book{Id = 1, Price = 13.50, Genre = "Comedy", Author = "Gustavo Achong"},
new Book{Id = 2, Price = 8.50, Genre = "Drama", Author = "Jessie Zeng"},
new Movie{Id = 1, Price = 22.99, Genre = "Comedy", Director = "Marissa Barnes"},
new Movie{Id = 1, Price = 13.40, Genre = "Action", Director = "Emmanuel Fernandez"}};
// Load into an existing DataTable, expand the schema and
// autogenerate a new Id.
DataTable table = new DataTable();
DataColumn dc = table.Columns.Add("NewId", typeof(int));
dc.AutoIncrement = true;
table.Columns.Add("ExtraColumn", typeof(string));
var query = from i in items
where i.Price > 9.99
orderby i.Price
select new { i.Price, i.Genre };
query.CopyToDataTable(table, LoadOption.PreserveChanges);
}
}
public class Item
{
public int Id { get; set; }
public double Price { get; set; }
public string Genre { get; set; }
}
public class Book : Item
{
public string Author { get; set; }
}
public class Movie : Item
{
public string Director { get; set; }
}
}
我得到錯誤CopyToDataTable
。我錯過了什麼嗎?
什麼類型的錯誤你好嗎? – rsbarro 2011-04-23 17:22:57
你已經問了263個關於SO的問題,你仍然會發布a)只是一段代碼b)沒有正確的格式c)沒有錯誤的細節? – 2011-04-23 18:18:25
試了一下,因爲我可以學到一些東西。但是給我們提供的錯誤會讓事情變得很輕鬆。 – Carra 2011-04-23 18:26:27