手写dataview增删改查事件

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
{
SqlConnection sqlcon;
SqlCommand sqlcmd;
string strcon = "server=.;database=db_04;uid=sa;pwd=;";
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
this.bind();
}
}
public void bind()
{
string sqlstr = "select * from tb_Member";
sqlcon = new SqlConnection(strcon);
SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
DataSet ds = new DataSet();
sqlcon.Open();
myda.Fill(ds, "tb_Member");
GridView1.DataSource = ds;
GridView1.DataKeyNames = new string[] { "id" };
GridView1.DataBind();
sqlcon.Close();
}
protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
{
GridView1.EditIndex = e.NewEditIndex;
bind();
}
protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
string sqlstr = "delete from tb_Member where id='"+GridView1.DataKeys[e.RowIndex].Value.ToString()+"'";
sqlcon = new SqlConnection(strcon);
sqlcmd = new SqlCommand(sqlstr, sqlcon);
sqlcon.Open();
sqlcmd.ExecuteNonQuery();
sqlcon.Close();
bind();
}
protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
sqlcon = new SqlConnection(strcon);
string sqlstr = "update tb_Member set name='"
+ ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',sex='"
+ ((TextBox)(GridView1.Rows[e.RowIndex].Cells[2].Controls[0])).Text.ToString().Trim() + "',nPlace='"
+ ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "' where id='"
+ GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
sqlcmd = new SqlCommand(sqlstr, sqlcon);
sqlcon.Open();
sqlcmd.ExecuteNonQuery();
sqlcon.Close();
GridView1.EditIndex = -1;
bind();
}
protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
{
GridView1.EditIndex = -1;
bind();
}
}