SqlDataReader转换为DataTable

SqlDataReader转换为DataTable

作者：未知　时间： 2007-6-11 13:05:56　文档类型：未知　来自：未知浏览统计：37

代码一： private void Form1_Load(object sender, EventArgs e) { dataGridView1.DataSource = GetData(); } private DataTable GetData() { DataTable dt = new DataTable(); using (SqlConnection connection = new SqlConnection("ConnectionString")) using (SqlCommand command = new SqlCommand()) { command.Connection = connection; command.CommandText = "SELECT * FROM Customers"; connection.Open(); using (SqlDataReader reader = command.ExecuteReader (CommandBehavior.CloseConnection)) { dt.Load(reader); } } return dt; } 代码二： private void Form1_Load(object sender, EventArgs e) { DataTable dt = new DataTable(); dt.Load(GetReader()); dataGridView1.DataSource = dt; } private IDataReader GetReader() { DataTable dt = new DataTable(); dt.Columns.Add("ID", typeof(string)); dt.Columns.Add("Firstname", typeof(string)); dt.Columns.Add("Lastname", typeof(string)); dt.Rows.Add((new Object[] {"HAYD", "David", "Hayden"})); return dt.CreateDataReader(); }

作者：未知　时间： 2007-6-11 13:05:56　文档类型：未知　来自：未知浏览统计：37

代码一：
private void Form1_Load(object sender, EventArgs e)
{
dataGridView1.DataSource = GetData();
}
private DataTable GetData()
{
DataTable dt = new DataTable();
using (SqlConnection connection
= new SqlConnection("ConnectionString"))
using (SqlCommand command = new SqlCommand())
{
command.Connection = connection;
command.CommandText = "SELECT * FROM Customers";
connection.Open();
using (SqlDataReader reader =
command.ExecuteReader
(CommandBehavior.CloseConnection))
{
dt.Load(reader);
}
}
return dt;
}
代码二：
private void Form1_Load(object sender, EventArgs e)
{
DataTable dt = new DataTable();
dt.Load(GetReader());
dataGridView1.DataSource = dt;
}
private IDataReader GetReader()
{
DataTable dt = new DataTable();
dt.Columns.Add("ID", typeof(string));
dt.Columns.Add("Firstname", typeof(string));
dt.Columns.Add("Lastname", typeof(string));
dt.Rows.Add((new Object[] {"HAYD", "David", "Hayden"}));
return dt.CreateDataReader();
}

转载于:https://www.cnblogs.com/myufeiyang/archive/2008/08/07/1262646.html

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