Gridview rowupdating newvalues count 0


23-Aug-2017 13:27

The Grid View 'Grid View1' fired event Row Deleting which wasn't handled. When I say manually databinding I mean not using a data source control specified as a Data Source ID, but rather setting the Grid View’s Data Source equal to the appropriate data object and calling Data Bind. NET 2.0 are familiar with how to deal with this, but since ASP.

NET 2.0 most of the examples and tutorials deal with setting the Data Source ID, which buys you a lot of automation that you may not even appreciate unless you’ve done this the old fashioned way.

The example shown here is for a Grid View, but the same types of event handlers must be implemented in roughly the same way for other data controls including the Form View, Details View, and List View. This is the final Grid View markup, so you can see the event handlers we’re going to implement.

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Affected Rows获取记录数。整个流程类似如下: 下图显示了事件触发顺序。例如更新Grid View时, (a)先触发Grid View的Row Updating事件(准备更新的参数) (b)接着系统准备Update Paraeters参数 (准备更新的参数) (3)调用Object Data Source的Update()方法 (4)进一步触发了Object Data Source的Updating事件。(利用e. Selected : 已选定Grid View Row对象 若要确定 Grid View Row 对象的状态,请使用 Row State 属性。 2.3 Data Item, Cells属性 ● Data Item : Grid View Row 对象绑定到的基础数据对象。该属性只在发生 Grid View 控件的 Row Data Bound 事件时及在发生后才可用。 集合,可以从单元格检索控件。 如果某列是Bound Field字段,可以使使用Cells[].