DataTable DataRow Field method

In Rider for Windows:

I am looping through a DataTable and want to access the Field method of the DataRow.

The error I get in Rider is : "Unable to resolve symbol 'Field'

Snippet of code:

foreach (DataRow row in dataTable.Rows)
{
for (var i = 0; i < dataTable.Columns.Count; i++)
{
var column = dataTable.Columns[i];
switch (column.DataType.ToString())
{
case "System.String":
var strVal = row.Field<string>(i).Trim();
break;
case "System.Int32":
var intVal = row.Field<int>(i);
}
}

This works in Visual Studio.

Any help getting this resolved is appreciated.

// Thom