关于Gridview的更新

Question

新手请教:我修改和文本框的值,可输入一下还是以前的,怎么回事啊
代码如下
  int id;
        id = int.Parse(((TextBox)GridView1.Rows[e.RowIndex].Cells[0].Controls[0]).Text);
        string update;
        update = ((TextBox)GridView1.Rows[e.RowIndex].Cells[1].Controls[0]).Text;
        string update1;
        update1 = ((TextBox)GridView1.Rows[e.RowIndex].Cells[2].Controls[0]).Text;
        string update2;
        update2 = ((TextBox)GridView1.Rows[e.RowIndex].Cells[3].Controls[0]).Text;
        Response.Write(update+"<br>");
        Response.Write(update1 + "<br>");
        Response.Write(update2 + "<br>");
        Response.Write(id + "<br>");

Answer 1

是不是在Page_Load多次绑定了?

Answer 2

protected void Page_Load(object sender, EventArgs e)
    {
        link link1 = new link();
        GridView1.DataSource=link1.Getlink();
        GridView1.DataBind();
    }    protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
    {
        GridView1.EditIndex = e.NewEditIndex;
        GridView1.DataBind();    }
    protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
    {
        GridView1.EditIndex = -1;
        GridView1.DataBind();
    }
    protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
    {
        int id;
        id = int.Parse(((TextBox)GridView1.Rows[e.RowIndex].Cells[0].Controls[0]).Text);
        string update;
        update = ((TextBox)GridView1.Rows[e.RowIndex].Cells[1].Controls[0]).Text;
        string update1;
        update1 = ((TextBox)GridView1.Rows[e.RowIndex].Cells[2].Controls[0]).Text;
        string update2;
        update2 = ((TextBox)GridView1.Rows[e.RowIndex].Cells[3].Controls[0]).Text;
        Response.Write(update+"<br>");
        Response.Write(update1 + "<br>");
        Response.Write(update2 + "<br>");
        Response.Write(id + "<br>");
        link uplink = new link();
        uplink.updatelink(update,update1,Convert.ToInt32(update2),Convert.ToInt32(id));
       // Label1.Text = id.ToString();
       ////string sql = "update link set title='" + update + "',linkurl='" + update1 + "',ps=" +Convert.ToInt32(update2) + " where id=" + id;
       // SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["zhaoshangConnectionString1"].ToString());
       // string sql = "select title from link where id=" + id;
       //     SqlCommand cmd = new SqlCommand(sql, conn);
       //     conn.Open();
       //     Label1.Text = cmd.ExecuteScalar();
            //try
            //{            //    cmd.ExecuteNonQuery();            //}
            //catch
            //{
            //    Label1.Text = "error";
            //}
            //finally
            //{
            //    conn.Close();
            //}
            //Label1.Text = "kdfjdkl";
        GridView1.EditIndex = -1;
        GridView1.DataBind();
        
    }

Answer 3

这样,把link link1 = new link();
        GridView1.DataSource=link1.Getlink();
        GridView1.DataBind();写在一个方法内如_BindGridView();
然后 Page_Load()
if(!this.IsPostBack)
{
  _BindGridView();
}