绑定到 Datatable 的 GridView - 分页无法正常工作

Question

我设置了一个网络表单，单击按钮可解析 .txt 文件并将其放入数据表中。当解析结束时，数据表绑定到gridview。我尝试添加分页，因为我得到了大量的行，但它似乎无法正常工作。每当我点击下一页时，网格就会消失，为了让它再次出现在正确的页面上，我需要再次点击该按钮。

我尝试将以下代码添加到源代码中：

<asp:GridView ID="GridView1" Runat="server" 
     AutoGenerateColumns="true"
     AllowPaging="True" OnPageIndexChanging="OnPageIndexChanging" >

还有这一点：

protected void OnPageIndexChanging(object sender, EventArgs e)
{
  GridView1.PageIndex = e.NewPageIndex; 
  GridView1.DataBind();
}

但它似乎并没有改变任何东西。知道我做错了什么吗？

Answer 1

尝试在 GridView 中添加 OnPageIndexChanging 事件

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false" AllowPaging="true"
OnPageIndexChanging="OnPageIndexChanging" PageSize="5">

还有你的 aspx.cs 代码。尝试在 Page_Load 事件上绑定 Gridview。

  protected void OnPageIndexChanging(object sender, GridViewPageEventArgs e)
    {
        GridView1.PageIndex = e.NewPageIndex;
        GridView1.DataBind();
    }

 protected void Page_Load(object sender, EventArgs e)
  { this.BindGrid();}

 private void BindGrid()
    {
        string constr = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
        using (SqlConnection con = new SqlConnection(constr))
        {
            using (SqlCommand cmd = new SqlCommand("SELECT * From [dbo].[your table] "))
            {
                using (SqlDataAdapter sda = new SqlDataAdapter())
                {
                    cmd.Connection = con;
                    sda.SelectCommand = cmd;
                    using (DataTable dt = new DataTable())
                    {
                        sda.Fill(dt);
                        GridView1.DataSource = dt;
                        GridView1.DataBind();
                    }
                }
            }
        }
    }

Answer 2

protected void OnPageIndexChanging(object sender, GridViewPageEventArgs e)
    {
        GridView1.PageIndex = e.NewPageIndex;
        //here yo have to assign datasource 
       //Some thing like this
       ///GridView1.DataSource=DataTable;
        GridView1.DataBind();
    }