当底层数据发生变化时，GridView内容不会更新 [英] GridView contents don’t update when underlying data changes

问题描述

所以我有一个带有两个控件的ASP.NET页面：

$ b $ a code GridView 显示来自 SqlDataSource 的行，并且用户可以在其中选择一行;

a DetailsView ，其中用户可以看到并编辑所选行的值。

DetailsView 可以更新底层数据，但即使页面重新加载， GridView 仍会显示旧的数据，直到我手动在浏览器中重新加载页面。

如何确保 GridView 在 DetailsView 中显示正确的数据？

PS注意由于其他问题中列出的原因可能很重要，我不得不使用自定义的 OnItemUpdating 事件与 DetailsView 。此事件执行SQL更新命令（成功），将 DetailsView 设置回ReadOnly模式（超出编辑模式），然后取消事件（ e .Cancel = true ）。如果这个事件取消也以某种方式取消了 GridView 更新，我该如何手动告诉它更新它？

PPS ：我发现了类似的问题，但答案并不奏效：它将整个页面重置为原始状态，这意味着 GridView 失去选中的行，并且 DetailsView 消失。我不希望这样。

解决方案

关于网页加载：

  YourGridViewID.DataBind（）
  

So I have an ASP.NET page with two controls:

• a GridView which displays rows from a SqlDataSource, and in which the user can select a row;
• a DetailsView in which the user can see and edit the values of the selected row.

The DetailsView can update the underlying data, but even though the page reloads, the GridView still displays the old data until I manually reload the page in the browser.

How do I ensure that the GridView displays the correct data after the update in the DetailsView?

P.S. It may be important to note that due to reasons outlined in this other question, I had to use a custom OnItemUpdating event with the DetailsView. This event performs the SQL update command (successfully), sets the DetailsView back to ReadOnly mode (out of Edit mode) and then cancels the event (e.Cancel = true). If this event canceling also somehow cancels the GridView updating, how do I manually tell it to update itself?

P.P.S.: I discovered this similar question, but the answer doesn’t work: it resets the entire page back to pristine state, which means the GridView loses its selected row and the DetailsView disappears. I don’t want that.

解决方案

on page load:

YourGridViewID.DataBind()

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