If the CSV is just being used to cache the results, you could use a Dictionary to store the contents of the search results instead. Separating your code into functions could be helpful:
private static object GetFirstValue(ResultPropertyCollection properties,
string propertyName)
{
var propertyValues = properties[propertyName];
var result = propertyValues.Count == 0 ? null : propertyValues[0];
return result;
}
Then you could either use a dictionary to hold the property values, or you could create a type:
var results = new List<Dictionary<string, object>>();
foreach(SearchResult objResult in objSearchResults)
{
var properties = objResult.Properties;
var propertyDictionary = new Dictionary<string, object> {
{"FirstName", GetFirstValue(properties, "givenname")},
{"LastName", GetFirstValue(properties, "sn")},
{"UserName", GetFirstValue(properties, "samaccountname")},
};
results.Add(propertyDictionary);
}
Now you have a list of property bags.
This could also be a simple LINQ statement:
var results = objSearchResults.OfType<SearchResult>()
.Select(s => s.Properties)
.Select(p => new {
FirstName = (string)GetFirstValue(properties, "givenname"),
LastName = (string)GetFirstValue(properties, "sn"),
UserName = (string)GetValue(properties, "samaccountname"),
AccountExpires = GetDateTimeValue(properties, "accountexpires")
});
Use the dictionaries like this:
foreach(var item in results)
{
var command = new SqlCommand();
...
command.Parameters.AddWithValue("firstName", item["FirstName"]);
...
}