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POC# - Replacement for.NET ArrayList.ToArray(Type) in Silverlight
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  1. POC# - Replacement for.NET ArrayList.ToArray(Type) in Silverlight
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    copied!<p>Below is a simple method I wrote (extremely simplified down so I hope it still gets the jist across) for taking a string representation of an array's elements in a string, and converting them into an actual array of those values. t is the type of the array.</p> <pre><code>DeserializeArray(string sArrayElements, out Array aValues, Type t) { string[] sValues = ProcessArrayElements(sArrayAsString); ArrayList alValues = new ArrayList(sValues.Length); for(int i = 0; i &lt; sValues.Length; ++i) alValues.Add(ProcessValue(sValues[ i ] )); aValues = alValues.ToArray(t.GetElementType()); return true; } </code></pre> <p>I would then use this method with the code below. propertyInfo is the property of an object that in this case .IsArray() == true. sArrayElements is just the string that contains the string representation of the array ("val1,val2,...,valN")</p> <pre><code>Array aValues; if (DeserializeArray(sArrayElements, out aValues, propertyInfo.PropertyType)) propertyInfo.SetValue(oObject, aValues, null); else throw new FormatException("Unable to parse Array Elements: " + sArrayElements); </code></pre> <p>This works beautifully in .NET, but not in Silverlight because the ArrayList object is marked as Internal or something (can not use type because access level blah blah blah).</p> <p>So I am looking for an alternative to the ArrayList.ToArray(Type). I can not just use a List&lt;object&gt;.ToArray() because the PropertyInfo.SetValue() call will bawk at trying to make an object[] into an Int32[] or the like.</p> <p>I have tried in the DeserializeArray() method to do something like aValues = Array.CreateInstance(t.GetElementType()) but I can not use [] to assign the values and you can not assign values to the foreach(obj in objects).</p> <p>I then tried changing the aValues parameter to a generic object[] array but i get the same conversion (boxing/unboxing) errors at run time when calling the Array.CreateInstance().</p> <p>So yeah; I am trying to find a solution to this problem for Silverlight 4. Any help would be greatly appreciated :)</p> <ul> <li>James</li> </ul>
 

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