单击gridview中的复选框时如何防止回发 [英] How to prevent postback when checkbox in gridview is clicked
问题描述
单击gridview中的复选框时如何防止回发
i有gridview如下，带复选框
复选框滑动日期滑动无季节DistributionType区域区域
复选框28-03-2018 23 2018 Agri IVC Volko
复选框20-04-2018 24 2019 Agri IVC Zolko
复选框21-06-2018 25 2018 Agri IVC Molko
复选框18-03-2018 15 2019 Agri IVC Rolko
复选框10-03-2018 22 2018 Agri IVC Solko
例如我点击gridview中的复选框第5行意味着，它不会停留在gridview中点击选中的行，它会回发并显示gridview的顶部。
如何预防单击gridview中的复选框时回发。
如何解决此问题
我尝试了什么：
如果在点击gridview中的复选框时如何防止回发
i有gridview如下带复选框
复选框滑动日期滑动无季节DistributionType Region Zone
复选框28-03-2018 23 2018 Agri IVC Volko
复选框20-04-2018 24 2019 Agri IVC Zolko
复选框21-06-2018 25 2018 Agri IVC Molko
复选框18-03-2018 15 2019 Agri IVC Rolko
复选框10-03- 2018 22 2018 Agri IVC Solko
例如我点击gridview第5行的复选框意味着，它不会停留在gridview中点击选中的行，它会回发并显示gridview的顶部。
当gridview中的复选框为cl时，如何防止回发icked
如何解决这个问题
how to prevent postback when checkbox in gridview is clicked
i have gridview as follows with checkbox
Checkbox Slip Date Slip No Season DistributionType Region Zone
Checkbox 28-03-2018 23 2018 Agri IVC Volko
Checkbox 20-04-2018 24 2019 Agri IVC Zolko
Checkbox 21-06-2018 25 2018 Agri IVC Molko
Checkbox 18-03-2018 15 2019 Agri IVC Rolko
Checkbox 10-03-2018 22 2018 Agri IVC Solko
for example i am click the checkbox in the gridview 5th row means,it will not stay in clicking selected row in gridview, it will postback and shows the top of the gridview.
how to prevent postback when checkbox in gridview is clicked.
how to solve this issue
What I have tried:
how to prevent postback when checkbox in gridview is clicked
i have gridview as follows with checkbox
Checkbox Slip Date Slip No Season DistributionType Region Zone
Checkbox 28-03-2018 23 2018 Agri IVC Volko
Checkbox 20-04-2018 24 2019 Agri IVC Zolko
Checkbox 21-06-2018 25 2018 Agri IVC Molko
Checkbox 18-03-2018 15 2019 Agri IVC Rolko
Checkbox 10-03-2018 22 2018 Agri IVC Solko
for example i am click the checkbox in the gridview 5th row means,it will not stay in clicking selected row in gridview, it will postback and shows the top of the gridview.
how to prevent post back when checkbox in gridview is clicked
how to solve this issue
推荐答案
既然你的GridView和CheckBox是服务器控件，当你触发CheckChanged事件，会引发回发。当它回发并且你进行了数据绑定时，它将重置CheckBox的状态并返回默认状态的GridView。
请记住，网络应用程序是无状态，你必须做一些事情来坚持驻留在网格中的复选框的状态。您必须跟踪所选复选框并将其存储在某处（例如ViewState / Session），以便在回发时可以引用它们。看一下这篇文章：九个用于管理持久用户状态的选项ASP.NET应用程序。您也可以参考此示例以在分页网格上保留复选框状态：在ASP.Net GridView控件中分页时保留复选框的状态
如果你真的想避免回发，那么你的UpdatePanel赢了没有帮助。您需要使用客户端GridView并使用JavaScript / jQuery在客户端操作所有内容。
Since your GridView and CheckBox are server controls, when you trigger CheckChanged event, it will cause a postback. When it postbacks and you did a Data bind, it will reset the state of your CheckBox and return the GridView of the default state.
Keep in mind that web apps are stateless and you have to do something to persist the state of the checkbox that resides in grid. You'll have to track the selected checkbox and store it somewhere (like ViewState/Session for example) so that you can reference them back when it postbacks. Take a look at this article: Nine Options for Managing Persistent User State in Your ASP.NET Application. You may also refer this example for persisting checkbox state on paged grid: Preserving state of Checkboxes while paging in ASP.Net GridView Control
If you really want to avoid postbacks, then your UpdatePanel won't help. You would need to use a client-side GridView and manipulate everything at the client-side using JavaScript/jQuery.
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