如何解除数据绑定控件的绑定 [英] how to unbind a data bound control

问题描述

如何取消绑定数据控件...?

试图取消绑定诸如GridView的DataBound控件.我已经尝试了很多方法，但是最流行的方法是使用面板将其隐藏.

我想知道是否有任何方法可以将其解除绑定为null.

How to unbind a data control... ?

Trying to UNBind a DataBound Control like GridView. I have tried many things but most popular way is to hide it using panel.

I want to know if there is any way to unbind it to null.

GridView1.DataSource = null;
GridView1.DataBind();

我看不到这个工作... !!!任何想法... ????????

I don''t see this working ...!!! Any Ideas...????????

推荐答案

请关注以下内容，

correct-way-to-unbind-a-bindingsource-from- a-datagridview [ ^ ]

system.web.ui.webcontrols.basedataboundcontrol.datasource.aspx [ ^ ]

并且DataSource 是GridView class 的属性，并且设置DataSource 的一部分的工作原理如下，

Please have a look followings,

correct-way-to-unbind-a-bindingsource-from-a-datagridview[^]

system.web.ui.webcontrols.basedataboundcontrol.datasource.aspx[^]

and DataSource is a property of GridView class and set part of the DataSource is work something like below,

...
set
{
  if (value != null)
  {
    //does some sort of validation on value;
  }
  this._dataSource = value;
  ...
}

因此null value可以用来设置DataSource property值.

希望对您有所帮助:)

So null value is acceptable to set DataSource property values.

Hope it helps :)

这始终有效...

This always works...

GridView1.DataSource = null;
GridView1.DataBind();

不知道为什么不是，但是它起作用了.总是...:))

Don''t know why it wasn''t but it works. always... :))

这篇关于如何解除数据绑定控件的绑定的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！