What is the best way to deal with DBNull's

Question

I frequently have problems dealing with DataRows returned from SqlDataAdapters. When I try to fill in an object using code like this:

Answer 1

DBNull implements .ToString() like everything else. No need to do anything. Instead of the hard cast, call the object's .ToString() method.

DataRow row = ds.Tables[0].Rows[0];
string value;

if (row["fooColumn"] == DBNull.Value)
{
   value = string.Empty;
}
else 
{
   value = Convert.ToString(row["fooColumn"]);
}

this becomes:

DataRow row = ds.Tables[0].Rows[0];
string value = row.ToString()

DBNull.ToString() returns string.Empty

I would imagine this is the best practice you're looking for