DataColumn Name from DataRow not DataTable

Question

I need to iterate the columnname and column datatype from a specific row  All of the examples I have seen have iterated an entire datatable  I want to pass a single row to a function to do a bunch of conditional processing  I want to separate the conditional processing for ease of readability   This is what I have   private void doMore DataRow dr        foreach  DataColumn c in dr ItemArray     loop through the columns                 MessageBox Show c ColumnName ToString               The error returned is      System InvalidCastException  Unable to cast object of type  System String  to type  System Data DataColumn      How would I get the column name from the row or do I have no choice and must pass the entire datatable to the function

User · Answer

You need something like this   foreach DataColumn c in dr Table Columns      MessageBox Show c ColumnName

User · Answer

use DataTable object instead    private void doMore DataTable dt            foreach DataColumn dc in dt Columns            MessageBox Show dc ColumnName

User · Answer

You can make it easier in your code  if you re doing this a lot anyway  by using an extension on the DataRow object  like   static class Extensions       public static string GetColumn this DataRow Row  int Ordinal                return Row Table Columns Ordinal  ColumnName            Then call it using   string MyColumnName   MyRow GetColumn 5

User · Answer

You would still need to go through the DataTable class  But you can do so using your DataRow instance by using the Table property   foreach  DataColumn c in dr Table Columns     loop through the columns         MessageBox Show c ColumnName

[c#] DataColumn Name from DataRow (not DataTable)

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