cmd.Parameters.AddWithValue nullable int

Question

In my data layer class, I initialize a parameter like so:

private int? _DependencyID;

public int? DependencyID
{ get {return _DependencyID;} set {_DependencyID          


        

Answer 1

I have created an extension to simply the code.

public static class SQLExtension
{
    public static SqlParameter AddWithNullable(
        this SqlParameterCollection collection, 
        string parameterName, 
        Nullable value) where T : struct, IComparable
    {
        return collection.AddWithValue(
            parameterName, (value.HasValue ? value.Value : (object)DBNull.Value)
        );
    }
}

Here is how you can use it.

cmd.AddWithNullable("@DependencyID", _DependencyID);