测试DataGridView以查看是否已选择Cell

Question

I have a Winforms application where several events can trigger the following code . 我有一个Winforms应用程序，其中几个事件可以触发以下代码。 . 。 . 。

DataGridViewRow row = (DataGridViewRow)dataContactBusiness.CurrentCell.OwningRow;
int busID = (int)row.Cells["ID"].Value;
//...further processes utilising this ID

Most of the time this is OK, but it is possible for this code to be triggered before the User has selected a row on the DataGridView or even before the DataGridView is populated. 大多数情况下这是可以的，但是可以在用户在DataGridView上选择行之前或甚至在填充DataGridView之前触发此代码。 When this happens I get an exception 'object not set to an instance' etc 当发生这种情况时，我得到一个异常'对象未设置为实例'等

What is the best way to test to see if 测试是否最好的方法是什么？

(a) The DataGridView has data, AND (b) The User has selected a cell or row in that DataGridView （a）DataGridView具有数据，AND（b）用户在该DataGridView中选择了一个单元格或行

Answer 1

if（dataContactBusiness.CurrentCell！= null）完成了这个伎俩

测试DataGridView以查看是否已选择Cell

问题描述

1 个解决方案

解决方案1
2 已采纳 2013-10-17 08:05:14

测试DataGridView以查看是否已选择Cell

问题描述

1 个解决方案

解决方案1 2 已采纳 2013-10-17 08:05:14

解决方案1
2 已采纳 2013-10-17 08:05:14