public void DispatchCallToProvider(object provider, UiaParameterListHelper paramList)
{
if (ProviderMethodInfo == null)
{
throw new InvalidOperationException("You need to pass providerMethodInfo if you want to call ISchemaMember.DispatchCallToProvider");
}
if (paramList.Count != PatternMethodParamDescriptions.Count)
{
var message = string.Format("Provided paramList has unexpected number of elements. Expected {0} but was {1}",
PatternMethodParamDescriptions.Count,
paramList.Count);
throw new ArgumentException(message, "paramList");
}
var providerCallParameters = new object[ProviderMethodInfo.GetParameters().Length];
// fill in params
for (int i = 0; i < PatternMethodParamDescriptions.Count; i++)
{
var desc = PatternMethodParamDescriptions[i];
if (UiaTypesHelper.IsInType(desc.UiaType))
{
var providerMethodParamIdx = _providerMethodInfoIndicies[desc.Name];
providerCallParameters[providerMethodParamIdx] = paramList[i];
}
}
// call provider
object result = null;
try
{
result = ProviderMethodInfo.Invoke(provider, providerCallParameters);
}
catch (TargetInvocationException e)
{
if (e.InnerException != null)
{
throw e.InnerException;
}
throw;
}
// write back out params
for (int i = 0; i < PatternMethodParamDescriptions.Count; i++)
{
var desc = PatternMethodParamDescriptions[i];
if (desc.Name == UiaTypesHelper.RetParamUnspeakableName)
{
paramList[i] = result;
continue;
}
if (UiaTypesHelper.IsOutType(desc.UiaType))
{
var providerMethodParamIdx = _providerMethodInfoIndicies[desc.Name];
paramList[i] = providerCallParameters[providerMethodParamIdx];
}
}
}
private UiaMethodInfoHelper(string programmaticName, bool doSetFocus, IEnumerable <UiaParameterDescription> uiaParams, MethodInfo providerMethodInfo)
{
_programmaticName = programmaticName;
_doSetFocus = doSetFocus;
_providerMethodInfo = providerMethodInfo;
if (ProviderMethodInfo != null)
{
_providerMethodInfoIndicies = new Dictionary <string, int>();
var args = ProviderMethodInfo.GetParameters();
for (int i = 0; i < args.Length; i++)
{
_providerMethodInfoIndicies.Add(args[i].Name, i);
}
}
PatternMethodParamDescriptions = new List <UiaParameterDescription>();
foreach (var param in uiaParams)
{
AddParameter(param);
}
}
