118 lines
4.3 KiB
C#
118 lines
4.3 KiB
C#
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using System;
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using System.Diagnostics;
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using System.Collections;
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using System.Collections.Generic;
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using System.Text;
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using System.Reflection;
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using System.Runtime.Serialization;
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using System.Runtime.Remoting;
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using System.Runtime.Remoting.Messaging;
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using System.Runtime.Remoting.Proxies;
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using System.Workflow.ComponentModel;
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using System.Workflow.Runtime;
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using System.Workflow.Runtime.Hosting;
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using System.Security.Permissions;
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using System.Globalization;
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namespace System.Workflow.Activities
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{
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internal sealed class ExternalDataExchangeBinder : Binder
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{
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Binder defltBinder;
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internal ExternalDataExchangeBinder()
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{
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defltBinder = Type.DefaultBinder;
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}
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public override MethodBase BindToMethod(BindingFlags bindingAttr,
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MethodBase[] match,
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ref object[] args,
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ParameterModifier[] modifiers,
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System.Globalization.CultureInfo culture,
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string[] names,
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out object state)
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{
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Object[] argsCopy = new Object[args.Length];
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args.CopyTo(argsCopy, 0);
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state = null;
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try
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{
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return defltBinder.BindToMethod(bindingAttr, match, ref args, modifiers, culture, names, out state);
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}
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catch (MissingMethodException) //5% case where when passed null for params.
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{
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if (match != null && match.Length != 0)
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{
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for (int i = 0; i < match.Length; ++i)
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{
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ParameterInfo[] methodParams = match[i].GetParameters();
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if (methodParams.Length == argsCopy.Length)
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{
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for (int j = 0; j < methodParams.Length; ++j)
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{
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if (!methodParams[j].ParameterType.IsInstanceOfType(argsCopy[j]))
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{
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if (!(methodParams[j].ParameterType.IsArray && argsCopy[j] == null))
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break;
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}
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if (j + 1 == methodParams.Length)
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return match[i];
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}
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}
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}
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}
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}
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return null;
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}
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public override FieldInfo BindToField(BindingFlags bindingAttr,
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FieldInfo[] match,
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object value,
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CultureInfo culture)
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{
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return defltBinder.BindToField(bindingAttr, match, value, culture);
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}
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public override MethodBase SelectMethod(BindingFlags bindingAttr,
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MethodBase[] match,
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Type[] types,
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ParameterModifier[] modifiers)
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{
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return defltBinder.SelectMethod(bindingAttr, match, types, modifiers);
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}
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public override PropertyInfo SelectProperty(BindingFlags bindingAttr,
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PropertyInfo[] match,
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Type returnType,
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Type[] indexes,
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ParameterModifier[] modifiers
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)
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{
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return defltBinder.SelectProperty(bindingAttr, match, returnType, indexes, modifiers);
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}
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public override object ChangeType(object value,
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Type type,
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CultureInfo culture
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)
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{
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return defltBinder.ChangeType(value, type, culture);
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}
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public override void ReorderArgumentArray(ref object[] args,
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object state
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)
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{
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defltBinder.ReorderArgumentArray(ref args, state);
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}
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}
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}
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