Get selected line in dbgrid

thanks for the quick answer, i'll test it right away!

There is also a way to refer to the first column by number instead of by name, try something like this:
  MyDataset.Fields[0].AsString;

Here's another trick. You can refer to your dataset indirectly by going through the DBGrid:

DBGrid1.Datasource.Dataset.Fields[0].AsString;

Note the 'AsString' part - you have other options like .value, .AsInteger, .AsFloat, .AsCurrency, .AsBoolean etc

Please open this: http://i32.tinypic.com/2wbzuqu.jpg
Examples: If line x is selected then i need the value of the field with coordinates (1,x)
If line y is selected i need the value on the field (1,y)

Also on my dbgrid1.datasource.dataset. there is not 'fieldbyname'

Thanks.

Well we'll need to know what dataset you're using. Follow the process:
Click on your DBGrid. In the Object Inspector check what the value of the property  Datasource is, for example it might be DataSource1.
Find and select DataSource1.
In the Object Inspector, check for the value of the property under 'Dataset', for example ADOTable1.
Find and select ADOTable1.
In the Object Inspector, at the top it should say something like:
ADOTable1 TADOTable
The information I'm looking for is 'TADOTable' - the Type of the Object. In the case of TADOTable I know you're using an ADODataset

I am using as dataset on my datasource a adoquery.
My dbgrid is linked to a datasource that is linked to a adoquery

TADOQuery does have a FieldByName property. Please check again

indeed. Thanks a lot..

sorry for being dumb xD