How to check if Datarow value is null

Question

Tell me please is this is correct way to check NULL in DataRow if need to return a string

 Convert.ToString(row[\"Int64_id\"] ?? \"\")
         


        

Answer 1

We have created an extension class that helps in these kinds of situations.

public static class DataRowExtensions
  {
    public static T FieldOrDefault(this DataRow row, string columnName)
    {
      return row.IsNull(columnName) ? default(T) : row.Field(columnName);
    }
  }

You can use is as follows:

int id = dataRow.FieldOrDefault("Id");