如何检查datagridview是null还是空 [英] How to check if datagridview is null or empty

问题描述

我有一个按钮来执行操作。但如果我的datgridview为空或null，它会发出一条消息，说明它是空的或空的。



我尝试了什么：



if（mydatagridview.rows.count == 0）

{

//消息

}

但这是检查我拥有的每一行如果我有大量的行。还有其他方法可以获得更快的逻辑/代码吗？感谢

I have a button that does an operation. but if my datgridview is empty or null it will prom a message saying it is null or empty.

What I have tried:

if (mydatagridview.rows.count == 0)
{
//message
}
but this is checking every row that I have what if I have tons of rows.is there other way for faster logic/code than this? thankss

推荐答案

检查null和空：

To check for null and empty:

if (mydatagridview == null || mydatagridview.Rows.Count == 0)
{
    // message
}

Rows.Count不不计算调用时的行，但返回添加和删除行时更新的值。调用它来检查DataGridView是否为空是没有问题的。

Rows.Count doesn't calculate the rows at the time of calling, but returns a value that is updated when adding and deleting rows. There is no problem calling it to check if the DataGridView is empty.

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