ADO.NET DataRow problem

[Ronny]

I work with ADO.NET but with an open source database named FireBird. Its not
completely SQLServer compatable so I ask my ADO.NET questions here...

I encounter a problem in which I can't fetch the value of a column as
follows. This happen only in the first column IP_ADDRESS which is defined as
VARCHAR(25) in the table. I gate the following error
Column 'IP_ADDRESS' does not belong to table NODE_LOCATION
Can someone help me please?
Regards
Ronny

foreach (DataRow AscendingDataRo w in AscendingDataRo ws)

{

string ip_address = (string)Ascendi ngDataRow["IP_ADDRESS "];// causes
exception : Column 'IP_ADDRESS' does not belong to table NODE_LOCATION

int BoudRate = (int)AscendingD ataRow["ACTUAL_UPLINK_ BANDWIDTH"];// work fine