GridView 编辑，更新，删除 等操作

protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
{
GridView1.EditIndex = -1;
Bindgrid();
}//编辑按键下的取消代码。将EditIndex=-1,然后在绑定数据库。

    protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
    {
         string id = GridView1.DataKeys[e.RowIndex][0].ToString();
         DeleteGridView(id);
         Bindgrid();
    }// id = GridView1.DataKeys[e.RowIndex][0].ToString();获得girdwiew中表的主键，作为删除数据的标识。DeleteGirdView()为自己写的删除函数


    protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
    {
        GridView1.EditIndex = e.NewEditIndex;
        Bindgrid();
    }//获取当前编辑状态

    protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
    {
        string id = GridView1.DataKeys[e.RowIndex][0].ToString();
        string uid = ((TextBox )GridView1.Rows[e.RowIndex].Cells[1].Controls[0]).Text;
        string upassword = ((TextBox )GridView1.Rows[e.RowIndex].Cells[2].Controls[0]).Text;
        string upower = ((TextBox)GridView1.Rows[e.RowIndex].Cells[3].Controls[0]).Text;
        UpdataGridView(id, uid, upassword, upower);
        GridView1.EditIndex = -1;
        Bindgrid();

    }//获得GridView中选中行的各列数据，用UpdataGridView()更新数据

    protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
    {
        GridView1.PageIndex = e.NewPageIndex;
        Bindgrid();
    }//换页的时候获取当前编辑页
   

    public void UpdataGridView(string id,string uid,string upassword,string upower)
    {
       SqlConnection con=new SqlConnection ("server=localhost;database=YGXXXT;uid=sa;password=00");
       string sql="update Users set ID='"+id+"',UID='"+uid+"',UPassword='"+upassword+"',UPower='"+upower+"'";
       SqlCommand cmd=new SqlCommand (sql,con );
       con.Open ();
       cmd.ExecuteNonQuery ();
       con.Close();
       
    }//更新数据库数据，注意sql语句里的'"+id+'"不要弄错格式~~~
    public void DeleteGridView(string id)
    {
        SqlConnection con = new SqlConnection("server=localhost;database=YGXXXT;uid=sa;password=00");
        string sql = "delete Users where ID='"+id +"'";
        SqlCommand cmd = new SqlCommand(sql, con);
        con.Open();
        cmd.ExecuteNonQuery();
        con.Close();
    }//删除数据库数据