Find SharePoint List Column available via SharePoint Server Side Code

you can use Fields.ContainsField to check if the List Column exists from the custom List, So that, you can avoid error for running Custom Code Webpart.



if(reqReadlist.Fields.ContainsField("RequestID"))
{
  LogMessage("RequestID " + Reqitem["RequestID"], EventLogEntryType.Error);

  dr["Requisition No"] = Convert.ToString(Reqitem["RequestID"]);
}
else
{
    LogMessage("Not Available RequestID ", EventLogEntryType.Error);
}