You can write below code under the PreviewMouseLeftButtonUp event.

TableViewHitInfo hit= tableView1.CalcHitInfo(e.OriginalSource as DependencyObject);

if(hit.InRowCell)
{ 
var row=gridControl.GetFocusedRow();
data _data=(data)row;
        if(hit.Column.FieldName==”Name”)
{
MessageBox.Show(_data.Name.ToString());
}
}

thanks.