在 GridView RowCommand 中获取 DataKey 值 [英] Get DataKey values in GridView RowCommand

问题描述

我有一个 GridView 和一个关联的 DataKey，它是项目 ID.如何在 RowCommand 事件中检索该值?

I have a GridView with an associated DataKey, which is the item ID. How do I retrieve that value inside the RowCommand event?

这似乎有效，但我不喜欢转换为 LinkBut​​ton(如果其他命令触发事件怎么办?)，而且我对 不太有信心NamingContainer 位.

This seems to work, but I don't like the cast to LinkButton (what if some other command is firing the event?), and I'm not too confident about the NamingContainer bit.

LinkButton lb = (LinkButton)e.CommandSource;
GridViewRow gvr = (GridViewRow)lb.NamingContainer;
int id = (int)grid.DataKeys[gvr.RowIndex].Value;

我知道我可以改为将该 ID 作为 CommandArgument 传递，但我选择使用 DataKey 以提供更大的灵活性.

I'm aware that I could instead pass that ID as the CommandArgument, but I chose to use DataKey to give me more flexibility.

我也知道可以对 ID 使用隐藏字段，但我认为这是一种我不想使用的 hack.

I'm also aware that it's possible to use a hidden field for the ID, but I consider that a hack that I don't want to use.

推荐答案

我通常通过 CommandArgument 传递 RowIndex 并使用它来检索我想要的 DataKey 值.

I usually pass the RowIndex via CommandArgument and use it to retrieve the DataKey value I want.

在按钮上:

CommandArgument='<%# DataBinder.Eval(Container, "RowIndex") %>'

关于服务器事件

int rowIndex = int.Parse(e.CommandArgument.ToString());
string val = (string)this.grid.DataKeys[rowIndex]["myKey"];

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