/// <summary>
/// Initializes a new instance of the KeyColumnConverter class.
/// </summary>
public KeyColumnConverter()
{
const string MakeKeyMethodName = "MakeKey";
Type[] arguments = new[] { typeof(JET_SESID), typeof(JET_TABLEID), typeof(TColumn), typeof(MakeKeyGrbit) };
// Look for a private method in this class that takes the appropriate arguments,
// otherwise a method on the Api class.
MethodInfo method = typeof(KeyColumnConverter <TColumn>).GetMethod(
MakeKeyMethodName,
BindingFlags.Static | BindingFlags.NonPublic | BindingFlags.ExactBinding,
null,
arguments,
null) ?? typeof(Api).GetMethod(
MakeKeyMethodName,
BindingFlags.Static | BindingFlags.Public | BindingFlags.ExactBinding,
null,
arguments,
null);
if (null != method)
{
this.keyMaker = (MakeKeyDelegate)Delegate.CreateDelegate(typeof(MakeKeyDelegate), method);
RuntimeHelpers.PrepareDelegate(this.keyMaker);
}
else
{
throw new ArgumentOutOfRangeException("type", typeof(TColumn), "Not supported for MakeKey");
}
}
/// <summary>
/// Initializes a new instance of the KeyColumnConverter class.
/// </summary>
/// <param name="type">The type to convert to/from.</param>
public KeyColumnConverter(Type type) : base(type)
{
if (!MakeKeyDelegates.ContainsKey(type))
{
throw new ArgumentOutOfRangeException("type", type, "Not supported for MakeKey");
}
this.makeKey = MakeKeyDelegates[type];
}
/// <summary>
/// Initializes a new instance of the KeyColumnConverter class.
/// </summary>
/// <param name="type">The type to convert to/from.</param>
public KeyColumnConverter(Type type) : base(type)
{
if (!MakeKeyDelegates.ContainsKey(type))
{
throw new ArgumentOutOfRangeException("type", type, "Not supported for MakeKey");
}
this.makeKey = MakeKeyDelegates[type];
}
