blocks|key|1739544|text|根据评论，你有：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1739545|dataGridView1.DataSource+=+BS;|code-block|syntax|javascript|1739546|其中BS是BindingSource，所以您可以使用它的BindingSource.Count属性。|offset|length|style|CODE|1739547|所以在代码中的某个地方：|1739548|var+bindingSource+=+dataGridView1.DataSource+as+BindingSource;+
if(bindingSource.Count+==+0)+{
++MessageBox.Show("EMPTY");
}|1739549|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/it-it/library/system.windows.forms.bindingsource.count.aspx^0|0|0|5|D|S|J|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|10|8|@$I|11|J|12|K|L]]|9|@$I|13|J|14|1|15]]|A|$]]|$1|M|3|N|5|6|7|16|8|@]|9|@]|A|$]]|$1|O|3|P|5|D|7|17|8|@]|9|@]|A|$E|F]]|$1|Q|3|-4|5|6|7|18|8|@]|9|@]|A|$]]]|R|$S|$5|T|U|V|A|$W|X]]]]

According to the comment, you have: 

<pre><code>dataGridView1.DataSource = BS;
</code></pre>

where BS is <code>BindingSource</code>, so you can use its <a href="http://msdn.microsoft.com/it-it/library/system.windows.forms.bindingsource.count.aspx" rel="noreferrer">BindingSource.Count</a> property. 

So somewhere in the code: 

<pre><code>var bindingSource = dataGridView1.DataSource as BindingSource; 
if(bindingSource.Count == 0) {
 MessageBox.Show("EMPTY");
}
</code></pre>

blocks|key|663904|text|在填充网格视图时也会检查这个。像这样|type|unstyled|depth|inlineStyleRanges|entityRanges|data|663905|DataSet+studentsList+=+students.GetAllStudents();+
bool+empty+=+IsEmpty(studentsList);+
if(empty)+{+
MessageBox.Show("EMPTY");+
}+
else+{+
using+(var+soundPlayer+=+new+SoundPlayer(@"c:\Windows\Media\chimes.wav"))
{+
soundPlayer.Play();+
}+
}|code-block|syntax|javascript|663906|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

You also check this when populate gridview.. like this 

<pre><code>DataSet studentsList = students.GetAllStudents(); 
bool empty = IsEmpty(studentsList); 
if(empty) { 
MessageBox.Show("EMPTY"); 
} 
else { 
using (var soundPlayer = new SoundPlayer(@"c:\Windows\Media\chimes.wav"))
{ 
soundPlayer.Play(); 
} 
}
</code></pre>

blocks|key|3059921|text|您可以使用函数GetCellCount()来获取单元格数。它需要一个名为DataGridViewElementStates.Selected的参数|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3059922|示例：|3059923|+if+(this.myGridView.GetCellCount(DataGridViewElementStates.Selected)+>+0)
++++++++{
++++++++++++//Do+sth
++++++++}
++++++++else
++++++++{
++++++++++++//Show+message
++++++++}|code-block|syntax|javascript|3059924|优点是不需要运行数据库查询来使用上述函数检查条件。更多细节：https://learn.microsoft.com/en-us/dotnet/api/system.windows.forms.datagridview.getcellcount|3059925|entityMap|0|LINK|mutability|MUTABLE|url|https://learn.microsoft.com/en-us/dotnet/api/system.windows.forms.datagridview.getcellcount^0|7|E|10|Y|0|0|0|U|2J|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]|$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|11|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|12|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|13|8|@]|D|@$9|14|A|15|1|16]]|E|$]]|$1|O|3|-4|5|6|7|17|8|@]|D|@]|E|$]]]|P|$Q|$5|R|S|T|E|$U|V]]]]

You can use the function <code>GetCellCount()</code> to get the cell count. It requires a parameter called <code>DataGridViewElementStates.Selected</code>

Example:

<pre><code> if (this.myGridView.GetCellCount(DataGridViewElementStates.Selected) &gt; 0)
 {
 //Do sth
 }
 else
 {
 //Show message
 }
</code></pre>

Advantage is you don't need to run database query to check condition using the mentioned function.
More details: <a href="https://learn.microsoft.com/en-us/dotnet/api/system.windows.forms.datagridview.getcellcount" rel="nofollow noreferrer">https://learn.microsoft.com/en-us/dotnet/api/system.windows.forms.datagridview.getcellcount</a>

Currently i have the following:

<pre><code>if (dataGridView1.Rows.Count == 0)
{
 MessageBox.Show("EMPTY");
}
else
{
 using (var soundPlayer = new SoundPlayer(@"c:\Windows\Media\chimes.wav"))
 {
 soundPlayer.Play(); // can also use soundPlayer.PlaySync()
 }
}
</code></pre>

My grid view looks like this:

<img src="https://i.stack.imgur.com/HWtC6.png" alt="enter image description here">

But it seems to go to the else statement and make the sound. I need it to NOT make a sound if there is no data in the rows of the gridview.

checking if gridview is empty using c#

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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目前，我有以下几点：if (dataGridView1.Rows.Count == 0){    MessageBox.Show("EMPTY");}else{    using (var soundPlayer = new SoundPlayer(@"c:\Windows\Media\chimes.wav"))   ...

问使用c#检查网格视图是否为空
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