如果没有,我把例子给你贴出来,看看就明白了..下面的完整代码示例提供的按钮用于从数据库重新加载数据和向数据库提交更改。 using System; using System.Data; using System.Data.SqlClient; using System.Windows.Forms;public class Form1 : System.Windows.Forms.Form { private DataGridView dataGridView1 = new DataGridView(); private BindingSource bindingSource1 = new BindingSource(); private SqlDataAdapter dataAdapter = new SqlDataAdapter(); private Button reloadButton = new Button(); private Button submitButton = new Button(); [STAThreadAttribute()] public static void Main() { Application.Run(new Form1()); } // Initialize the form. public Form1() { dataGridView1.Dock = DockStyle.Fill; reloadButton.Text = "reload"; submitButton.Text = "submit"; reloadButton.Click += new System.EventHandler(reloadButton_Click); submitButton.Click += new System.EventHandler(submitButton_Click); FlowLayoutPanel panel = new FlowLayoutPanel(); panel.Dock = DockStyle.Top; panel.AutoSize = true; panel.Controls.AddRange(new Control[] { reloadButton, submitButton }); this.Controls.AddRange(new Control[] { dataGridView1, panel }); this.Load += new System.EventHandler(Form1_Load); this.Text = "DataGridView databinding and updating demo"; } private void Form1_Load(object sender, System.EventArgs e) { // Bind the DataGridView to the BindingSource // and load the data from the database. dataGridView1.DataSource = bindingSource1; GetData("select * from Customers"); } private void reloadButton_Click(object sender, System.EventArgs e) { // Reload the data from the database. GetData(dataAdapter.SelectCommand.CommandText); } private void submitButton_Click(object sender, System.EventArgs e) { // Update the database with the user's changes. dataAdapter.Update((DataTable)bindingSource1.DataSource); } private void GetData(string selectCommand) { try { // Specify a connection string. Replace the given value with a // valid connection string for a Northwind SQL Server sample // database accessible to your system. String connectionString = "Integrated Security=SSPI;Persist Security Info=False;" + "Initial Catalog=Northwind;Data Source=localhost"; // Create a new data adapter based on the specified query. dataAdapter = new SqlDataAdapter(selectCommand, connectionString); // Create a command builder to generate SQL update, insert, and // delete commands based on selectCommand. These are used to // update the database. SqlCommandBuilder commandBuilder = new SqlCommandBuilder(dataAdapter); // Populate a new data table and bind it to the BindingSource. DataTable table = new DataTable(); table.Locale = System.Globalization.CultureInfo.InvariantCulture; dataAdapter.Fill(table); bindingSource1.DataSource = table; // Resize the DataGridView columns to fit the newly loaded content. dataGridView1.AutoResizeColumns( DataGridViewAutoSizeColumnsMode.AllCellsExceptHeader); } catch (SqlException) { MessageBox.Show("To run this example, replace the value of the " + "connectionString variable with a connection string that is " + "valid for your system."); } }}
using System.Data;
using System.Data.SqlClient;
using System.Windows.Forms;public class Form1 : System.Windows.Forms.Form
{
private DataGridView dataGridView1 = new DataGridView();
private BindingSource bindingSource1 = new BindingSource();
private SqlDataAdapter dataAdapter = new SqlDataAdapter();
private Button reloadButton = new Button();
private Button submitButton = new Button(); [STAThreadAttribute()]
public static void Main()
{
Application.Run(new Form1());
} // Initialize the form.
public Form1()
{
dataGridView1.Dock = DockStyle.Fill; reloadButton.Text = "reload";
submitButton.Text = "submit";
reloadButton.Click += new System.EventHandler(reloadButton_Click);
submitButton.Click += new System.EventHandler(submitButton_Click); FlowLayoutPanel panel = new FlowLayoutPanel();
panel.Dock = DockStyle.Top;
panel.AutoSize = true;
panel.Controls.AddRange(new Control[] { reloadButton, submitButton }); this.Controls.AddRange(new Control[] { dataGridView1, panel });
this.Load += new System.EventHandler(Form1_Load);
this.Text = "DataGridView databinding and updating demo";
} private void Form1_Load(object sender, System.EventArgs e)
{
// Bind the DataGridView to the BindingSource
// and load the data from the database.
dataGridView1.DataSource = bindingSource1;
GetData("select * from Customers");
} private void reloadButton_Click(object sender, System.EventArgs e)
{
// Reload the data from the database.
GetData(dataAdapter.SelectCommand.CommandText);
} private void submitButton_Click(object sender, System.EventArgs e)
{
// Update the database with the user's changes.
dataAdapter.Update((DataTable)bindingSource1.DataSource);
} private void GetData(string selectCommand)
{
try
{
// Specify a connection string. Replace the given value with a
// valid connection string for a Northwind SQL Server sample
// database accessible to your system.
String connectionString =
"Integrated Security=SSPI;Persist Security Info=False;" +
"Initial Catalog=Northwind;Data Source=localhost"; // Create a new data adapter based on the specified query.
dataAdapter = new SqlDataAdapter(selectCommand, connectionString); // Create a command builder to generate SQL update, insert, and
// delete commands based on selectCommand. These are used to
// update the database.
SqlCommandBuilder commandBuilder = new SqlCommandBuilder(dataAdapter); // Populate a new data table and bind it to the BindingSource.
DataTable table = new DataTable();
table.Locale = System.Globalization.CultureInfo.InvariantCulture;
dataAdapter.Fill(table);
bindingSource1.DataSource = table; // Resize the DataGridView columns to fit the newly loaded content.
dataGridView1.AutoResizeColumns(
DataGridViewAutoSizeColumnsMode.AllCellsExceptHeader);
}
catch (SqlException)
{
MessageBox.Show("To run this example, replace the value of the " +
"connectionString variable with a connection string that is " +
"valid for your system.");
}
}}
Form_load时绑定数据到DataGrid,然后用户在DataGrid中进行添加数据,添加完后,用户点击一个"更新"按钮,数据更新到数据库,然后再重新绑定数据源...
SqlCommandBuilder builder=new SqlCommandBuilder(adapter);
DataSet ds =new DataSet ();
adapter.Fill (ds,"Score");//填充数据
DataTable dt = ds.Tables ["Score"];
DataRow dr = dt.NewRow();
dr[0]="1006";dr[1]="小梁";
dt.Rows .Add (dr);//添加新行
dataGrid1.DataSource =dt.DefaultView ;
adapter.Update (ds,"Score");