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POWhat is the ideal way to call an overloaded method based on an object that may be of one of several different types?
 

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  1. POWhat is the ideal way to call an overloaded method based on an object that may be of one of several different types?
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    <p>For my WPF view, I have several objects that implement a single interface for display purposes. When one is selected, I want to call a certain method based on the type and options chosen on the view. I already have Overloads available for each type of object. I attempted using a generic method, but it proved that the objects were too different to be useable.</p> <p>I am trying to avoid control coupling with large if statements for maintainability purposed. </p> <p><strong>Did I go wrong by using the singular interface, or is there an interesting maintainable way of doing this?</strong></p> <p>I have a datagrid that contains a collection of IDisplayableObject.</p> <pre><code>public interface IDisplayableObject { string Name { get; set; } string ID { get; set; } } </code></pre> <p>Right now, I cast as the first answer.</p> <pre><code> public void ExportDashed(string path, IDisplayableObject folder) { if (folder is TestFolder) { IndentationTraverse(folder as TestFolder); } else if (folder is UserStory) { IndentationTraverse(folder as UserStory); } _excelManipulator.Save(path); } </code></pre> <p>I want to avoid the if statements. For this case, I usually use a dictionary mapped to an Action, but I also have another method of </p> <pre><code> public void ExportShiftingColumns(string path, IDisplayableObject folder) { if (folder is TestFolder) { ColumnShiftTraverse(folder as TestFolder); } else if (folder is UserStory) { ColumnShiftTraverse(folder as UserStory); } _excelManipulator.Save(path); } </code></pre> <p>So, I need to make the action, Export Dashed or Export Shifting Columns, then I need to decide which type to export.</p> <p><strong>You can see from the code, duplication is not a good thing and I want to avoid it as much as possible. For this application, it is not that big of a deal but more for my personal learning.</strong></p>
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    1. UStylerjgarland
    1. UStylerjgarland
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    1. COCan you post a small example of the interface and how you want to call it from your class?
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      1. POWhat is the ideal way to call an overloaded method based on an object that may be of one of several different types?
      1. USTrevor Pilley
 

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