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41 lines
2.6 KiB
Markdown
41 lines
2.6 KiB
Markdown
---
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title: "How to: Get Print System Object Properties Without Reflection"
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ms.date: "03/30/2017"
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dev_langs:
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- "csharp"
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- "vb"
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helpviewer_keywords:
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- "PrintSystemObject [WPF], getting properties"
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ms.assetid: 43560f28-183d-41c1-b9d1-de7c2552273e
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---
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# How to: Get Print System Object Properties Without Reflection
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Using reflection to itemize the properties (and the types of those properties) on an object can slow application performance. The <xref:System.Printing.IndexedProperties> namespace provides a means to getting this information with using reflection.
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## Example
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The steps for doing this are as follows.
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1. Create an instance of the type. In the example below, the type is the <xref:System.Printing.PrintQueue> type that ships with Microsoft .NET Framework, but nearly identical code should work for types that you derive from <xref:System.Printing.PrintSystemObject>.
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2. Create a <xref:System.Printing.IndexedProperties.PrintPropertyDictionary> from the type's <xref:System.Printing.PrintSystemObject.PropertiesCollection%2A>. The <xref:System.Collections.DictionaryEntry.Value%2A> property of each entry in this dictionary is an object of one of the types derived from <xref:System.Printing.IndexedProperties.PrintProperty>.
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3. Enumerate the members of the dictionary. For each of them, do the following.
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4. Up-cast the value of each entry to <xref:System.Printing.IndexedProperties.PrintProperty> and use it to create a <xref:System.Printing.IndexedProperties.PrintProperty> object.
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5. Get the type of the <xref:System.Printing.IndexedProperties.PrintProperty.Value%2A> of each of the <xref:System.Printing.IndexedProperties.PrintProperty> object.
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[!code-csharp[GetPrintObjectPropertyTypesWithoutReflection#ShowPropertyTypesWithoutReflection](~/samples/snippets/csharp/VS_Snippets_Wpf/GetPrintObjectPropertyTypesWithoutReflection/CSharp/Program.cs#showpropertytypeswithoutreflection)]
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[!code-vb[GetPrintObjectPropertyTypesWithoutReflection#ShowPropertyTypesWithoutReflection](~/samples/snippets/visualbasic/VS_Snippets_Wpf/GetPrintObjectPropertyTypesWithoutReflection/visualbasic/program.vb#showpropertytypeswithoutreflection)]
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## See also
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- <xref:System.Printing.IndexedProperties.PrintProperty>
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- <xref:System.Printing.PrintSystemObject>
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- <xref:System.Printing.IndexedProperties>
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- <xref:System.Printing.IndexedProperties.PrintPropertyDictionary>
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- <xref:System.Printing.LocalPrintServer>
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- <xref:System.Printing.PrintQueue>
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- <xref:System.Collections.DictionaryEntry>
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- [Documents in WPF](documents-in-wpf.md)
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- [Printing Overview](printing-overview.md)
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