来自CodeBehind的GridView在C#Paging中无法正常工作

protected void Page_Load(object sender, EventArgs e)
{
    if (!IsPostBack)
    {
        BindData();
    }
}

private void BindData()
{
    // 获取数据
    DataTable dataTable = GetData();

    // 绑定数据
    GridView1.DataSource = dataTable;
    GridView1.DataBind();
}

<asp:GridView ID="GridView1" runat="server" AllowPaging="True" PageSize="10" OnPageIndexChanging="GridView1_PageIndexChanging">
</asp:GridView>

protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
    // 设置当前页码
    GridView1.PageIndex = e.NewPageIndex;

    // 重新绑定数据
    BindData();
}

private DataTable GetPagedData(int pageIndex, int pageSize)
{
    // 获取数据
    DataTable dataTable = GetData();

    // 创建新的数据表
    DataTable pagedDataTable = dataTable.Clone();

    // 获取当前页的数据
    int startIndex = pageIndex * pageSize;
    int endIndex = Math.Min(startIndex + pageSize, dataTable.Rows.Count);
    for (int i = startIndex; i < endIndex; i++)
    {
        DataRow dataRow = pagedDataTable.NewRow();
        dataRow.ItemArray = dataTable.Rows[i].ItemArray;
        pagedDataTable.Rows.Add(dataRow);
    }

    return pagedDataTable;
}

private void BindData()
{
    // 获取当前页的数据
    DataTable dataTable = GetPagedData(GridView1.PageIndex, GridView1.PageSize);

    // 绑定数据
    GridView1.DataSource = dataTable;
    GridView1.DataBind();
}