如何在gridview中获取所选行的值 [英] How to get the value of a selected row in gridview

问题描述

大家好，



我有一个gridview，我放置了一些绑定字段，并在网格的最后一列添加了一个图像按钮作为模板字段。< br $>


我想要的是当我点击图片按钮时，我的页面应该重定向到一个包含列值的新页面，比如我点击的行的ID。



我可以使用会话或查询字符串进行重定向，但如何获取行值？



我尝试了很多方面，但我得到一个空引用错误。

我无法使用图像按钮获取所选行。



如何编码图像按钮以选择行并获取其值？

请帮助我。

提前感谢...

Hi all,

I have a gridview there I placed some bound field and also added an image button in the last column of the grid as template field.

What I want is when I click on the image button my page should redirect to a new page with one of column values, say the id of the row where I clicked.

I can use session or query string for redirecting but how to get the row values?

I tried in many ways but I get a null reference error.
I''m unable to get the selected row using an image button.

How can I code the image button to select a row and get its values?
Please help me.
Thanks in advance...

推荐答案

转到选择更改事件并编写以下代码：

选择更改事件



int index = gridvview.selectedindex;

session [id] =（gridview.ro ws [index] .cells [0] .text）.tostring（）;



通过这种方式，您可以从所选行中获取所有单元格的值

go to selection changing event and write the code below:
Selection changeing Event

int index=gridvview.selectedindex;
session["id"]=(gridview.rows[index].cells[0].text).tostring();

in this way you get all your cell''s values from selected row

尝试详细了解这个 MSDN文章 [ ^ ]。



基本上，您需要获取按钮所在行的索引。然后，您可以使用该索引获取特定行：



GridViewRow row = ContactsGridView.Rows [index];



然后，您可以获得所需列的内容，例如：



String s = row.Cells [2] .Text;



变量s将具有gridview所选行（点击按钮的位置）的第三个单元格的值。



我分享的链接有一个例子。

Try exploring more on this MSDN Article[^].

Basically, you need to get the index of the row where the button is located. You can then get the specific row using that index:

GridViewRow row = ContactsGridView.Rows[index];

You can then get the content of the column that you want, for example:

String s = row.Cells[2].Text;

The variable s will have the value of third cell of the selected row (where your button was clicked) of you gridview.

There is an example on the link I shared.

一种方法是为该图像按钮添加Click事件并获取行如下，

One way is to add Click event for that image button and get the row as,

GridviewRow gvRow = (sender as ImageButton).NamingContainer as GridviewRow;

然后访问您要传递的DataKey或ID。

PS：代码未经过测试。



或者你可以使用RowCommand。

and then access the DataKey or ID which you want to pass.
PS: Code is not tested.

Alternatively you can use RowCommand.

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