Question

我有一个ObjectDataSource的数据表，问题是当我调用update方法时，datalist的select方法在更新方法之前执行，结果没有显示更新的datalist，我必须f5才能看到更新的结果，下面是代码：

AspView

<asp:DataList ID="CustomersDefaultPaging" runat="server" Width="100%" 
    RepeatColumns="1" EnableViewState="False" 
    DataSourceID="CustomersDefaultPagingDataSource" DataKeyField="Id">
    <ItemTemplate>.....</ItemTemplate>
  <asp:ObjectDataSource ID="CustomersDefaultPagingDataSource" runat="server"
        OldValuesParameterFormatString="original_{0}" SelectMethod="GetCustomersAsPagedDataSource"
        TypeName="mobilecustomers" 
    OnSelected="CustomersDefaultPagingDataSource_Selected">

代码隐藏

     protected void CustomersDefaultPagingDataSource_Selected(object sender, ObjectDataSourceStatusEventArgs e)
{
    // Reference the PagedDataSource bound to the DataList
    PagedDataSource pagedData = (PagedDataSource)e.ReturnValue;

    // Remember the total number of records being paged through across postbacks
    TotalRowCount = pagedData.DataSourceCount;

    // Configure the paging interface based on the data in the PagedDataSource
    FirstPage.Enabled = !pagedData.IsFirstPage;
    PrevPage.Enabled = !pagedData.IsFirstPage;
    NextPage.Enabled = !pagedData.IsLastPage;
    LastPage.Enabled = !pagedData.IsLastPage;

    // Display the current page being viewed...
    CurrentPageNumber.Text = string.Format("You are viewing page {0} of {1}...", PageIndex + 1, PageCount);
}

     protected void btnSave_Click(object sender, EventArgs e)
{
    foreach (DataListItem item in CustomersDefaultPaging.Items)
    {
        customers.UpdateCustomerAddress(.........);


    }
}

DataAcess

      static public DataTable GetAllCustomers()
     {

    string sql = "Select * from [Customers] where [Upgrade] = 0";
    SqlDataAdapter da = new SqlDataAdapter(sql, ConnectionString);
    DataTable dt = new DataTable();
    da.Fill(dt);
    return dt;
    }

      public PagedDataSource GetCustomersAsPagedDataSource(string sortExpression, int pageIndex, int pageSize)
{

    DataTable dt = new DataTable();
    dt = GetAllCustomers();
    dt.DefaultView.Sort = sortExpression;
    // Limit the results through a PagedDataSource
    PagedDataSource pagedData = new PagedDataSource();
    pagedData.DataSource = dt.DefaultView;
    //pagedData.DataBind();
    pagedData.AllowPaging = true;
    pagedData.CurrentPageIndex = pageIndex;
    pagedData.PageSize = pageSize;
    return pagedData;
}

在更新时单击数据列表应该只显示升级值为0的客户，当我将字段更新为0时Curretly它更新sql db但它没有在datalist上显示我必须刷新它才能看到更新。

Answer 1

显然DataList不会自己重新绑定。我不知道这是否可行但是如何挂钩到DataList Updated事件并强制网格绑定到那里。这有帮助吗？

根据我的阅读，GridView控件对ObjectDataSource的效果更好。它是我，我可能想要换DataList GridView，看看是否有帮助。或者至少运行一些快速测试并查看。

确实有点模糊

选择更新按钮之前调用的ObjectDataSource方法

1 个答案: