public static void SetProperty(this IDispatchEx dispatchEx, string name, bool ignoreCase, params object[] args) { if (args.Length < 1) { throw new ArgumentException("Invalid argument count", "args"); } var dispid = dispatchEx.GetDispIDForName(name, true, ignoreCase); using (var argVariantArrayBlock = new CoTaskMemVariantArgsBlock(args)) { using (var namedArgDispidBlock = new CoTaskMemBlock(sizeof(int))) { EXCEPINFO excepInfo; Marshal.WriteInt32(namedArgDispidBlock.Addr, SpecialDispIDs.PropertyPut); var dispArgs = new DISPPARAMS { cArgs = args.Length, rgvarg = argVariantArrayBlock.Addr, cNamedArgs = 1, rgdispidNamedArgs = namedArgDispidBlock.Addr }; var result = dispatchEx.InvokeEx(dispid, 0, DispatchFlags.PropertyPut | DispatchFlags.PropertyPutRef, ref dispArgs, IntPtr.Zero, out excepInfo); if (result == HResult.DISP_E_MEMBERNOTFOUND) { // VBScript objects can be finicky about property-put dispatch flags result = dispatchEx.InvokeEx(dispid, 0, DispatchFlags.PropertyPut, ref dispArgs, IntPtr.Zero, out excepInfo); if (result == HResult.DISP_E_MEMBERNOTFOUND) { result = dispatchEx.InvokeEx(dispid, 0, DispatchFlags.PropertyPutRef, ref dispArgs, IntPtr.Zero, out excepInfo); } } HResult.Check(result); } } }
public static object GetProperty(this IDispatchEx dispatchEx, string name, bool ignoreCase, object[] args) { int dispid; Marshal.ThrowExceptionForHR(dispatchEx.GetDispID(name, ignoreCase ? DispatchNameFlags.CaseInsensitive : DispatchNameFlags.CaseSensitive, out dispid)); using (var argVariantArrayBlock = new CoTaskMemVariantArgsBlock(args)) { using (var resultVariantBlock = new CoTaskMemVariantBlock()) { EXCEPINFO excepInfo; var dispArgs = new DISPPARAMS { cArgs = args.Length, rgvarg = argVariantArrayBlock.Addr, cNamedArgs = 0, rgdispidNamedArgs = IntPtr.Zero }; dispatchEx.InvokeEx(dispid, 0, DispatchFlags.PropertyGet, ref dispArgs, resultVariantBlock.Addr, out excepInfo); return Marshal.GetObjectForNativeVariant(resultVariantBlock.Addr); } } }
public static object GetProperty(this IDispatch dispatch, string name, params object[] args) { if (!MiscHelpers.Try(out int dispid, () => dispatch.GetDispIDForName(name))) { return(Nonexistent.Value); } using (var argVariantArrayBlock = new CoTaskMemVariantArgsBlock(args)) { using (var resultVariantBlock = new CoTaskMemVariantBlock()) { var dispArgs = new DISPPARAMS { cArgs = args.Length, rgvarg = argVariantArrayBlock.Addr, cNamedArgs = 0, rgdispidNamedArgs = IntPtr.Zero }; HResult.Check(dispatch.Invoke(dispid, ref iid, 0, DispatchFlags.PropertyGet, ref dispArgs, resultVariantBlock.Addr, out _, out _)); return(Marshal.GetObjectForNativeVariant(resultVariantBlock.Addr)); } } }
public static object GetProperty(this IDispatchEx dispatchEx, string name, bool ignoreCase, params object[] args) { int dispid; if (!MiscHelpers.Try(out dispid, () => dispatchEx.GetDispIDForName(name, false, ignoreCase))) { return(Nonexistent.Value); } using (var argVariantArrayBlock = new CoTaskMemVariantArgsBlock(args)) { using (var resultVariantBlock = new CoTaskMemVariantBlock()) { EXCEPINFO excepInfo; var dispArgs = new DISPPARAMS { cArgs = args.Length, rgvarg = argVariantArrayBlock.Addr, cNamedArgs = 0, rgdispidNamedArgs = IntPtr.Zero }; HResult.Check(dispatchEx.InvokeEx(dispid, 0, DispatchFlags.PropertyGet, ref dispArgs, resultVariantBlock.Addr, out excepInfo)); return(Marshal.GetObjectForNativeVariant(resultVariantBlock.Addr)); } } }
public static void SetProperty(this IDispatchEx dispatchEx, string name, bool ignoreCase, object[] args) { if (args.Length < 1) { throw new ArgumentException("Invalid argument count", "args"); } int dispid; var result = dispatchEx.GetDispID(name, DispatchNameFlags.Ensure | (ignoreCase ? DispatchNameFlags.CaseInsensitive : DispatchNameFlags.CaseSensitive), out dispid); if (result == RawCOMHelpers.HResult.DISP_E_UNKNOWNNAME) { throw new NotSupportedException("Object does not support dynamic properties"); } Marshal.ThrowExceptionForHR(result); using (var argVariantArrayBlock = new CoTaskMemVariantArgsBlock(args)) { using (var namedArgDispidBlock = new CoTaskMemBlock(sizeof(int))) { EXCEPINFO excepInfo; Marshal.WriteInt32(namedArgDispidBlock.Addr, SpecialDispIDs.PropertyPut); var dispArgs = new DISPPARAMS { cArgs = args.Length, rgvarg = argVariantArrayBlock.Addr, cNamedArgs = 1, rgdispidNamedArgs = namedArgDispidBlock.Addr }; dispatchEx.InvokeEx(dispid, 0, DispatchFlags.PropertyPut | DispatchFlags.PropertyPutRef, ref dispArgs, IntPtr.Zero, out excepInfo); } } }