asp.net中向数据库插入数据实例

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
public partial class _Default : System.Web.UI.Page
{
string constr = "server=.;database=ProductDB;Uid=sa;pwd=;";
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack) {
Bind();
}
}
public void Bind() {
string sqlstr = "select * from Product";
SqlConnection sqlConn = new SqlConnection(constr);
SqlDataAdapter sda = new SqlDataAdapter(sqlstr, sqlConn);
DataSet ds = new DataSet();
sda.Fill(ds);
this.GridView1.DataSource = ds;
this.GridView1.DataBind();
sqlConn.Close();
}
protected void Button1_Click(object sender, EventArgs e)
{
string sqlStr = "insert into Product(ProductID,ProductDes) VALUES ('"+TextBox1.Text.Trim()+"','"+TextBox2.Text.Trim()+"')";
SqlConnection sqlConn = new SqlConnection(constr);
sqlConn.Open();
SqlCommand sqlCmd = new SqlCommand(sqlStr, sqlConn);
sqlCmd.ExecuteNonQuery();
sqlConn.Close();
this.Bind();
}
}