it helps but not totally solve the problem...

Here the code I have:

protected void WebDataGrid1_InitializeRow(object sender, RowEventArgs e)
{
if (e.Row.Items[2].Value.ToString() == "Crée")
{
foreach (GridRecordItem item in e.Row.Items)
{
if (item != null)
{
item.CssClass = "customStyleEven";
}
}

and style:

tbody.igg_RubberBlackItem >tr>td.customStyleEven
{
background-color:Red ;
}

tbody>tr.igg_RubberBlackAlt>td.customStyleOdd
{
background-color:Blue;
}

My question: What should I do to avoid some lines aren't well colored ? 

Question 2: Is it possible to apply a style on a row instead of each item of the row ? is so, how ?

Thanks

I'm sure you will propose an answer as fast as you will read this :)

Hello Nicolas,

Thank you for your replies.

Styling a row can be achieved by using a class selector similar to:

        tbody.igg_RubberBlackItem >tr.CustomRowStyle>td 
    {
        background-color:Red ;
    } 

Note that for some attributes, !important may need to be applied as the usual hierarchy of applying css rules may be ignored (which should be used with caution). The row class can then be set at InitializeRow using:

        e.Row.CssClass = "CustomRowStyle";

Regarding the issues in the image shown, I am not completely sure why one of the columns is being skipped while styling. Can you provide me with some additional information whether there are some special settings applied on the Cree column ?

Do not hesitate to contact e with any updates or questions.

Well, it's always the same

The style is set to rubberblack and nothing else is done except in the code provided...

Hello Nicolas,

Thank you for your reply.

In order to allow me to examine this further, is it possible for you to share a sample illustrating the issue ? Inspecting whether unexpected CSS rules are applied on the particular column's cells through the developer tools may also help in revealing issues.

Please do not hesitate to contact me with any updates or questions.