In Operator in Data Table

that's great.. keep coding.....

it resolved for me here is the solution string[] entitlementInfosArray = Convert.ToString(item["EntitlementInfo"]).Split('~'); IEnumerable selectedEntitlements = from entitlement in dtEntitleMentInfo.AsEnumerable() where dtEntitleMentInfo.AsEnumerable().Any(x => entitlementInfosArray.Contains(x.Field("SNO"))) select entitlement;

plz provide more info so we can able to solve your problem. with sample.