blocks|key|1125352|text|您需要遍历datagridview中的行，然后比较每行中第7列和第10列的值。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1125353|试试这个：|1125354|foreach+(DataGridViewRow+row+in+vendorsDataGridView.Rows)+
+++++if+(Convert.ToInt32(row.Cells[7].Value)+<+Convert.ToInt32(row.Cells[10].Value))+
+++++{
+++++++++row.DefaultCellStyle.BackColor+=+Color.Red;+
+++++}|code-block|syntax|javascript|1125355|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

You need to loop through the rows in the datagridview and then compare values of columns 7 and 10 on each row.

Try this:

<pre><code>foreach (DataGridViewRow row in vendorsDataGridView.Rows) 
 if (Convert.ToInt32(row.Cells[7].Value) &lt; Convert.ToInt32(row.Cells[10].Value)) 
 {
 row.DefaultCellStyle.BackColor = Color.Red; 
 }
</code></pre>

blocks|key|1340562|text|我只是在调查这个问题(所以我知道这个问题是在大约3年前发表的，但也许它会对某些人有所帮助……)但似乎更好的选择是将代码放在RowPrePaint事件中，这样您就不必遍历每一行，只遍历那些被绘制的行(这样它在处理大量数据时会执行得更好：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1340563|附加到事件|1340564|this.dataGridView1.RowPrePaint+
++++%2B=+new+System.Windows.Forms.DataGridViewRowPrePaintEventHandler(
++++++++this.dataGridView1_RowPrePaint);|code-block|syntax|javascript|1340565|事件代码|1340566|private+void+dataGridView1_RowPrePaint(object+sender,+DataGridViewRowPrePaintEventArgs+e)
{
++++if+(Convert.ToInt32(dataGridView1.Rows[e.RowIndex].Cells[7].Text)+<+Convert.ToInt32(dataGridView1.Rows[e.RowIndex].Cells[10].Text))+
++++{
++++++++dataGridView1.Rows[e.RowIndex].DefaultCellStyle.BackColor+=+Color.Beige;
++++}
}|1340567|entityMap^0|1P|B|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|V|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|W|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|X|8|@]|D|@]|E|$]]|$1|O|3|P|5|J|7|Y|8|@]|D|@]|E|$K|L]]|$1|Q|3|-4|5|6|7|Z|8|@]|D|@]|E|$]]]|R|$]]

I was just investigating this issue (so I know this question was published almost 3 years ago, but maybe it will help someone... ) but it seems that a better option is to place the code inside the <code>RowPrePaint</code> event so that you don't have to traverse every row, only those that get painted (so it will perform much better on large amount of data:

Attach to the event 

<pre><code>this.dataGridView1.RowPrePaint 
 += new System.Windows.Forms.DataGridViewRowPrePaintEventHandler(
 this.dataGridView1_RowPrePaint);
</code></pre>

The event code

<pre><code>private void dataGridView1_RowPrePaint(object sender, DataGridViewRowPrePaintEventArgs e)
{
 if (Convert.ToInt32(dataGridView1.Rows[e.RowIndex].Cells[7].Text) &lt; Convert.ToInt32(dataGridView1.Rows[e.RowIndex].Cells[10].Text)) 
 {
 dataGridView1.Rows[e.RowIndex].DefaultCellStyle.BackColor = Color.Beige;
 }
}
</code></pre>

blocks|key|1125265|text|您正在寻找CellFormatting事件。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1125266|Here就是一个例子。|1125267|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/system.windows.forms.datagridview.cellformatting.aspx|1|http://msdn.microsoft.com/en-us/library/z1cc356h.aspx^0|5|E|5|E|0|0|0|4|1|0^^$0|@$1|2|3|4|5|6|7|R|8|@$9|S|A|T|B|C]]|D|@$9|U|A|V|1|W]]|E|$]]|$1|F|3|G|5|6|7|X|8|@]|D|@$9|Y|A|Z|1|10]]|E|$]]|$1|H|3|-4|5|6|7|11|8|@]|D|@]|E|$]]]|I|$J|$5|K|L|M|E|$N|O]]|P|$5|K|L|M|E|$N|Q]]]]

You're looking for the <a href="http://msdn.microsoft.com/en-us/library/system.windows.forms.datagridview.cellformatting.aspx" rel="noreferrer"><code>CellFormatting</code></a> event. 
<a href="http://msdn.microsoft.com/en-us/library/z1cc356h.aspx" rel="noreferrer">Here</a> is an example.

blocks|key|1125485|text|我在更改文本颜色时也遇到了问题--我从来没有看到颜色发生了变化。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1125486|直到我向DataGridView的event+DataBindingsComplete添加了更改文本颜色的代码。在那之后，它起作用了。|offset|length|style|CODE|1125487|我希望这能帮助那些面临同样问题的人。|1125488|entityMap^0|0|4|C|N|K|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|M|8|@$D|N|E|O|F|G]|$D|P|E|Q|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|R|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|K|$]]

I had trouble changing the text color as well - I never saw the color change.

Until I added the code to change the text color to the event <code>DataBindingsComplete</code> for <code>DataGridView</code>. After that it worked. 

I hope this will help people who face the same problem.

blocks|key|1340404|text|类似于下面的内容。假设单元格中的值是整数。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1340405|foreach+(DataGridViewRow+dgvr+in+myDGV.Rows)
{
++if+(dgvr.Cells[7].Value+<+dgvr.Cells[10].Value)
++{
++++dgvr.DefaultCellStyle.ForeColor+=+Color.Red;
++}
}|code-block|syntax|javascript|1340406|未经测试，因此对任何错误深表歉意。|1340407|如果您知道特定的行，则可以跳过迭代：|1340408|if+(myDGV.Rows[theRowIndex].Cells[7].Value+<+myDGV.Rows[theRowIndex].Cells[10].Value)
{
++dgvr.DefaultCellStyle.ForeColor+=+Color.Red;
}|1340409|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|D|7|S|8|@]|9|@]|A|$E|F]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Something like the following... assuming the values in the cells are Integers. 

<pre><code>foreach (DataGridViewRow dgvr in myDGV.Rows)
{
 if (dgvr.Cells[7].Value &lt; dgvr.Cells[10].Value)
 {
 dgvr.DefaultCellStyle.ForeColor = Color.Red;
 }
}
</code></pre>

untested, so apologies for any error.

If you know the particular row, you can skip the iteration:

<pre><code>if (myDGV.Rows[theRowIndex].Cells[7].Value &lt; myDGV.Rows[theRowIndex].Cells[10].Value)
{
 dgvr.DefaultCellStyle.ForeColor = Color.Red;
}
</code></pre>

blocks|key|1340672|text|有些人喜欢使用Paint、CellPainting或CellFormatting事件，但请注意，更改这些事件中的样式会导致递归调用。如果你使用DataBindingComplete，它将只执行一次。CellFormatting的参数是，它只在可见单元格上调用，所以您不必格式化不可见的单元格，而是多次格式化它们。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1340673|entityMap^0|7|5|D|C|Q|E|1Z|J|2R|E|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]|$9|M|A|N|B|C]|$9|O|A|P|B|C]|$9|Q|A|R|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|S|8|@]|D|@]|E|$]]]|G|$]]

Some people like to use the <code>Paint</code>, <code>CellPainting</code> or <code>CellFormatting</code> events, but note that changing a style in these events causes recursive calls. If you use <code>DataBindingComplete</code> it will execute only once. The argument for <code>CellFormatting</code> is that it is called only on visible cells, so you don't have to format non-visible cells, but you format them multiple times.

blocks|key|1125551|text|在应用Datasource+of+DatagridView之后，您可以使用condition.and+this函数调用逐行更改此函数。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1125552|下面是实现该功能的函数。只需复制它并将其放在Databind之后|1125553|private+void+ChangeRowColor()
{
++++for+(int+i+=+0;+i+<+gvItem.Rows.Count;+i%2B%2B)
++++{
++++++++if+(BindList[i].MainID+==+0+&&+!BindList[i].SchemeID.HasValue)
++++++++++++gvItem.Rows[i].DefaultCellStyle.BackColor+=+ColorTranslator.FromHtml("#C9CADD");
++++++++else+if+(BindList[i].MainID+>+0+&&+!BindList[i].SchemeID.HasValue)
++++++++++++gvItem.Rows[i].DefaultCellStyle.BackColor+=+ColorTranslator.FromHtml("#DDC9C9");
++++++++else+if+(BindList[i].MainID+>+0)
++++++++++++gvItem.Rows[i].DefaultCellStyle.BackColor+=+ColorTranslator.FromHtml("#D5E8D7");
++++++++else
++++++++++++gvItem.Rows[i].DefaultCellStyle.BackColor+=+Color.White;
++++}
}|code-block|syntax|javascript|1125554|entityMap^0|3|A|H|C|0|M|8|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]|$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|T|8|@$9|U|A|V|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|W|8|@]|D|@]|E|$K|L]]|$1|M|3|-4|5|6|7|X|8|@]|D|@]|E|$]]]|N|$]]

You can Change <code>Backcolor</code> row by row using your condition.and this function call after applying <code>Datasource</code> of <code>DatagridView</code>.

Here Is the function for that.
Simply copy that and put it after <code>Databind</code>

<pre><code>private void ChangeRowColor()
{
 for (int i = 0; i &lt; gvItem.Rows.Count; i++)
 {
 if (BindList[i].MainID == 0 &amp;&amp; !BindList[i].SchemeID.HasValue)
 gvItem.Rows[i].DefaultCellStyle.BackColor = ColorTranslator.FromHtml("#C9CADD");
 else if (BindList[i].MainID &gt; 0 &amp;&amp; !BindList[i].SchemeID.HasValue)
 gvItem.Rows[i].DefaultCellStyle.BackColor = ColorTranslator.FromHtml("#DDC9C9");
 else if (BindList[i].MainID &gt; 0)
 gvItem.Rows[i].DefaultCellStyle.BackColor = ColorTranslator.FromHtml("#D5E8D7");
 else
 gvItem.Rows[i].DefaultCellStyle.BackColor = Color.White;
 }
}
</code></pre>

blocks|key|1340497|text|private+void+dtGrdVwRFIDTags_DataSourceChanged(object+sender,+EventArgs+e)
{
++++dtGrdVwRFIDTags.Refresh();
++++this.dtGrdVwRFIDTags.Columns[1].Visible+=+false;

++++foreach+(DataGridViewRow+row+in+this.dtGrdVwRFIDTags.Rows)
++++{
++++++++if+(row.Cells["TagStatus"].Value+!=+null+
++++++++++++&&+row.Cells["TagStatus"].Value.ToString()+==+"Lost"+
++++++++++++%7C%7C+row.Cells["TagStatus"].Value+!=+null+
++++++++++++&&+row.Cells["TagStatus"].Value.ToString()+==+"Damaged"+
++++++++++++%7C%7C+row.Cells["TagStatus"].Value+!=+null+
++++++++++++&&+row.Cells["TagStatus"].Value.ToString()+==+"Discarded")
++++++++{
++++++++++++row.DefaultCellStyle.BackColor+=+Color.LightGray;
++++++++++++row.DefaultCellStyle.Font+=+new+Font("Tahoma",+8,+FontStyle.Bold);
++++++++}
++++++++else
++++++++{
++++++++++++row.DefaultCellStyle.BackColor+=+Color.Ivory;
++++++++}
++++}++

++++//for+(int+i=+0+;+i<dtGrdVwRFIDTags.Rows.Count+-+1;+i%2B%2B)
++++//{
++++//++++if+(dtGrdVwRFIDTags.Rows[i].Cells[3].Value.ToString()+==+"Damaged")
++++//++++{
++++//++++++++dtGrdVwRFIDTags.Rows[i].Cells["TagStatus"].Style.BackColor+=+Color.Red;+++++++++++++++++++
++++//++++}
++++//}
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1340498|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>private void dtGrdVwRFIDTags_DataSourceChanged(object sender, EventArgs e)
{
 dtGrdVwRFIDTags.Refresh();
 this.dtGrdVwRFIDTags.Columns[1].Visible = false;

 foreach (DataGridViewRow row in this.dtGrdVwRFIDTags.Rows)
 {
 if (row.Cells["TagStatus"].Value != null 
 &amp;&amp; row.Cells["TagStatus"].Value.ToString() == "Lost" 
 || row.Cells["TagStatus"].Value != null 
 &amp;&amp; row.Cells["TagStatus"].Value.ToString() == "Damaged" 
 || row.Cells["TagStatus"].Value != null 
 &amp;&amp; row.Cells["TagStatus"].Value.ToString() == "Discarded")
 {
 row.DefaultCellStyle.BackColor = Color.LightGray;
 row.DefaultCellStyle.Font = new Font("Tahoma", 8, FontStyle.Bold);
 }
 else
 {
 row.DefaultCellStyle.BackColor = Color.Ivory;
 }
 } 

 //for (int i= 0 ; i&lt;dtGrdVwRFIDTags.Rows.Count - 1; i++)
 //{
 // if (dtGrdVwRFIDTags.Rows[i].Cells[3].Value.ToString() == "Damaged")
 // {
 // dtGrdVwRFIDTags.Rows[i].Cells["TagStatus"].Style.BackColor = Color.Red; 
 // }
 //}
}
</code></pre>

blocks|key|1125599|text|这是我使用bindingDataSource将颜色更改为dataGridView的解决方案：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1125600|private+void+dataGridViewECO_DataBindingComplete(object+sender,+DataGridViewBindingCompleteEventArgs+e)
{++++++++++++

++++if+(e.ListChangedType+!=+ListChangedType.ItemDeleted)
++++{

++++++++DataGridViewCellStyle+green+=+this.dataGridViewECO.DefaultCellStyle.Clone();
++++++++green.BackColor+=+Color.Green;

++++++++DataGridViewCellStyle+gray+=+this.dataGridViewECO.DefaultCellStyle.Clone();
++++++++gray.BackColor+=+Color.LightGray;



++++++++foreach+(DataGridViewRow+r+in+this.dataGridViewECO.Rows)
++++++++{

++++++++++++if+(r.Cells[8].Value+!=+null)
++++++++++++{

++++++++++++++++String+stato+=+r.Cells[8].Value.ToString();


++++++++++++++++if+(!"+Open+".Equals(stato))
++++++++++++++++{
++++++++++++++++++++r.DefaultCellStyle+=+gray;
++++++++++++++++}
++++++++++++++++else
++++++++++++++++{
++++++++++++++++++++r.DefaultCellStyle+=+green;
++++++++++++++++}
++++++++++++}

++++++++}

++++}
}|code-block|syntax|javascript|1125601|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|$]]

This is my solution to change color to dataGridView with bindingDataSource:

<pre><code>private void dataGridViewECO_DataBindingComplete(object sender, DataGridViewBindingCompleteEventArgs e)
{ 

 if (e.ListChangedType != ListChangedType.ItemDeleted)
 {

 DataGridViewCellStyle green = this.dataGridViewECO.DefaultCellStyle.Clone();
 green.BackColor = Color.Green;

 DataGridViewCellStyle gray = this.dataGridViewECO.DefaultCellStyle.Clone();
 gray.BackColor = Color.LightGray;



 foreach (DataGridViewRow r in this.dataGridViewECO.Rows)
 {

 if (r.Cells[8].Value != null)
 {

 String stato = r.Cells[8].Value.ToString();


 if (!" Open ".Equals(stato))
 {
 r.DefaultCellStyle = gray;
 }
 else
 {
 r.DefaultCellStyle = green;
 }
 }

 }

 }
}
</code></pre>

blocks|key|1340922|text|如果绑定到具体对象的(集合)，则可以通过行的DataBoundItem属性获取该具体对象。(为了避免检查单元格中的魔术字符串和使用对象的“真实”属性)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1340923|骨架示例如下：|1340924|DTO/POCO|1340925|public+class+Employee
{
++++public+int+EmployeeKey+{get;set;}

++++public+string+LastName+{get;set;}

++++public+string+FirstName+{get;set;}

++++public+bool+IsActive+{get;set;}
}+++++++|code-block|syntax|javascript|1340926|绑定到datagridview|1340927|++++private+void+BindData(ICollection<Employee>+emps)
++++{
++++++++System.ComponentModel.BindingList<Employee>+bindList+=+new+System.ComponentModel.BindingList<Employee>(emps.OrderBy(emp+=>+emp.LastName).ThenBy(emp+=>+emp.FirstName).ToList());
++++++++this.dgvMyDataGridView.DataSource+=+bindList;
++++}+++++++|1340928|然后是事件处理程序，并获取具体的对象(而不是DataGridRow和/或cells)|1340929|++++++++private+void+dgvMyDataGridView_RowPrePaint(object+sender,+DataGridViewRowPrePaintEventArgs+e)
++++++++{
++++++++++++Employee+concreteSelectedRowItem+=+this.dgvMyDataGridView.Rows[e.RowIndex].DataBoundItem+as+Employee;
++++++++++++if+(null+!=+concreteSelectedRowItem+&&+!concreteSelectedRowItem.IsActive)
++++++++++++{
++++++++++++++++dgvMyDataGridView.Rows[e.RowIndex].DefaultCellStyle.BackColor+=+Color.LightGray;
++++++++++++}
++++++++}|1340930|entityMap^0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|W|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|X|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|Y|8|@]|9|@]|A|$]]|$1|M|3|N|5|H|7|Z|8|@]|9|@]|A|$I|J]]|$1|O|3|P|5|6|7|10|8|@]|9|@]|A|$]]|$1|Q|3|R|5|H|7|11|8|@]|9|@]|A|$I|J]]|$1|S|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|T|$]]

If you bind to a (collection) of concrete objects, you can get the that concrete object via the DataBoundItem property of the row. (To avoid check for magic strings in the cell and using "real" properties of the object)

Skeleton example below:

DTO/POCO

<pre><code>public class Employee
{
 public int EmployeeKey {get;set;}

 public string LastName {get;set;}

 public string FirstName {get;set;}

 public bool IsActive {get;set;}
} 
</code></pre>

Binding to the datagridview

<pre><code> private void BindData(ICollection&lt;Employee&gt; emps)
 {
 System.ComponentModel.BindingList&lt;Employee&gt; bindList = new System.ComponentModel.BindingList&lt;Employee&gt;(emps.OrderBy(emp =&gt; emp.LastName).ThenBy(emp =&gt; emp.FirstName).ToList());
 this.dgvMyDataGridView.DataSource = bindList;
 } 
</code></pre>

then the event handler and getting the concrete object (instead of a DataGridRow and/or cells)

<pre><code> private void dgvMyDataGridView_RowPrePaint(object sender, DataGridViewRowPrePaintEventArgs e)
 {
 Employee concreteSelectedRowItem = this.dgvMyDataGridView.Rows[e.RowIndex].DataBoundItem as Employee;
 if (null != concreteSelectedRowItem &amp;&amp; !concreteSelectedRowItem.IsActive)
 {
 dgvMyDataGridView.Rows[e.RowIndex].DefaultCellStyle.BackColor = Color.LightGray;
 }
 }
</code></pre>

blocks|key|1125393|text|为此，我通常喜欢使用GridView.RowDataBound事件。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1125394|protected+void+OrdersGridView_RowDataBound(object+sender,+GridViewRowEventArgs+e)
{
++++if+(e.Row.RowType+==+DataControlRowType.DataRow)
++++{
++++++++e.Row.ForeColor+=+System.Drawing.Color.Red;
++++}
}|code-block|syntax|javascript|1125395|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|$]]

I typically Like to use the GridView.RowDataBound Event event for this.

<pre><code>protected void OrdersGridView_RowDataBound(object sender, GridViewRowEventArgs e)
{
 if (e.Row.RowType == DataControlRowType.DataRow)
 {
 e.Row.ForeColor = System.Drawing.Color.Red;
 }
}
</code></pre>

blocks|key|1125673|text|使用这段代码，您只需更改列名值为空的行的背景颜色，其他行的颜色仍为默认颜色。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1125674|+++++++foreach+(DataGridViewRow+row+in+dataGridView1.Rows)
++++++++++++++++{
++++++++++++++++++++if+(row.Cells["columnname"].Value+!=+null)
++++++++++++++++++++{
++++++++++++++++++++++++dataGridView1.AlternatingRowsDefaultCellStyle.BackColor+=+Color.MistyRose;
++++++++++++++++++++}
+++++++++++++++++}|code-block|syntax|javascript|1125675|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|$]]

With this code, you only change rows backcolor where columname value is null other rows color still the default one.

<pre><code> foreach (DataGridViewRow row in dataGridView1.Rows)
 {
 if (row.Cells["columnname"].Value != null)
 {
 dataGridView1.AlternatingRowsDefaultCellStyle.BackColor = Color.MistyRose;
 }
 }
</code></pre>

blocks|key|1340882|text|只需注意设置DefaultCellStyle.BackColor，...you不能将其设置为除Color.Empty以外的任何透明值。这是默认值。这错误地暗示(至少对我而言)透明颜色是可以接受的。他们不是。我设置为透明颜色的每一行都只绘制选定行的颜色。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1340883|在这个问题上，我花了太多的时间把头撞到墙上。|1340884|entityMap^0|6|Q|1B|B|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]|$9|M|A|N|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|O|8|@]|D|@]|E|$]]|$1|H|3|-4|5|6|7|P|8|@]|D|@]|E|$]]]|I|$]]

Just a note about setting <code>DefaultCellStyle.BackColor</code>...you can't set it to any transparent value except <code>Color.Empty</code>. That's the default value. That falsely implies (to me, anyway) that transparent colors are OK. They're not. Every row I set to a transparent color just draws the color of selected-rows.

I spent entirely too much time beating my head against the wall over this issue.

blocks|key|1125883|text|int+counter+=+gridEstimateSales.Rows.Count;

for+(int+i+=+0;+i+<+counter;+i%2B%2B)
{
++++if+(i+==+counter-1)
++++{
++++++++//this+is+where+your+LAST+LINE+code+goes
++++++++//row.DefaultCellStyle.BackColor+=+Color.Yellow;
++++++++gridEstimateSales.Rows[i].DefaultCellStyle.BackColor+=+Color.Red;
++++}
++++else
++++{
++++++++//this+is+your+normal+code+NOT+LAST+LINE
++++++++//row.DefaultCellStyle.BackColor+=+Color.Red;
++++++++gridEstimateSales.Rows[i].DefaultCellStyle.BackColor+=+Color.White;
++++}
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1125884|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>int counter = gridEstimateSales.Rows.Count;

for (int i = 0; i &lt; counter; i++)
{
 if (i == counter-1)
 {
 //this is where your LAST LINE code goes
 //row.DefaultCellStyle.BackColor = Color.Yellow;
 gridEstimateSales.Rows[i].DefaultCellStyle.BackColor = Color.Red;
 }
 else
 {
 //this is your normal code NOT LAST LINE
 //row.DefaultCellStyle.BackColor = Color.Red;
 gridEstimateSales.Rows[i].DefaultCellStyle.BackColor = Color.White;
 }
}
</code></pre>

blocks|key|1125923|text|我来到这里是为了寻找一种不使用数据绑定的解决方案。对我来说什么都不管用，但我最终得到了它：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1125924|dataGridView.Columns.Clear();+
dataGridView.Rows.Clear();
dataGridView.Refresh();|code-block|syntax|javascript|1125925|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|$]]

I landed here looking for a solution for the case where I dont use data binding. Nothing worked for me but I got it in the end with:

<pre><code>dataGridView.Columns.Clear(); 
dataGridView.Rows.Clear();
dataGridView.Refresh();
</code></pre>

blocks|key|1341107|text|如果你是地球上第二个最愚蠢的开发人员(我是最愚蠢的)，上面所有的解决方案似乎都有效:+CellFormatting、DataSourceChanged和RowPrePaint。我更喜欢RowPrePaint。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1341108|我为此挣扎了很长时间，因为我需要重写我的SelectionBackColor和SelectionForeColor，而不是BackColor和ForeColor，因为我正在更改选定的行。|1341109|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

If you are the second dumbest developer on the planet (me being the dumbest), all of the above solutions seem to work: CellFormatting, DataSourceChanged, and RowPrePaint. I prefer RowPrePaint.

I struggled with this (for way too long) because I needed to override my SelectionBackColor and SelectionForeColor instead of BackColor and ForeColor as I was changing the selected row.

blocks|key|1341144|text|是像这样吗？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1341145|if+(readmesaj.durum11+==+"Under")
++++++++++++++++++++++++++++++++++++++++{
++++++++++++++++++++++++++++++++++++++++++++dataGridView1.Rows[i].Cells[1].Style.BackColor+=+Color.Yellow;
++++
++++++++++++++++++++++++++++++++++++++++}
++++++++++++++++++++++++++++++++++++++++if+(readmesaj.durum11+==+"Pass")
++++++++++++++++++++++++++++++++++++++++{
++++++++++++++++++++++++++++++++++++++++++++dataGridView1.Rows[i].Cells[1].Style.BackColor+=+Color.Green;
++++
++++++++++++++++++++++++++++++++++++++++}
++++++++++++++++++++++++++++++++++++++++if+(readmesaj.durum11+==+"Over")
++++++++++++++++++++++++++++++++++++++++{
++++++++++++++++++++++++++++++++++++++++++++dataGridView1.Rows[i].Cells[1].Style.BackColor+=+Color.Red;
++++
++++++++++++++++++++++++++++++++++++++++}|code-block|syntax|javascript|1341146|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|$]]

like this?
<pre><code>if (readmesaj.durum11 == &quot;Under&quot;)
 {
 dataGridView1.Rows[i].Cells[1].Style.BackColor = Color.Yellow;
 
 }
 if (readmesaj.durum11 == &quot;Pass&quot;)
 {
 dataGridView1.Rows[i].Cells[1].Style.BackColor = Color.Green;
 
 }
 if (readmesaj.durum11 == &quot;Over&quot;)
 {
 dataGridView1.Rows[i].Cells[1].Style.BackColor = Color.Red;
 
 }
</code></pre>

I would like to change the color of a particular row in my datagridview. The row should be changed to red when the value of columncell 7 is less than the value in columncell 10. Any suggestions on how to accomplish this?

How to change row color in datagridview?

我想要更改我的datagridview中特定行的颜色。当列单元格7的值小于列单元格10的值时，应该将行更改为红色。有什么建议可以实现这一点吗？

问如何在datagridview中更改行颜色？
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回答 17

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问如何在datagridview中更改行颜色？EN

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问如何在datagridview中更改行颜色？
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