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POLambda expressions / delegate assign variable
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  1. POLambda expressions / delegate assign variable
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    copied!<p>Actually I can not even say exactly how that thing is called correctly but I need something that can assign variables / properties / fields in one method. I will try to explain... I have the following code:</p> <pre><code>txtBox.Text = SectionKeyName1; //this is string property of control or of any other type if (!string.IsNullOrEmpty(SectionKeyName1)) { string translation = Translator.Translate(SectionKeyName1); if (!string.IsNullOrEmpty(translation)) { txtBox.Text = translation; } } stringField = SectionKeyName2; //this is class scope string field if (!string.IsNullOrEmpty(SectionKeyName2)) { string translation = Translator.Translate(SectionKeyName2); if (!string.IsNullOrEmpty(translation)) { stringField = translation; } } stringVariable = SectionKeyName3; //this is method scope string variable if (!string.IsNullOrEmpty(SectionKeyName3)) { string translation = Translator.Translate(SectionKeyName3); if (!string.IsNullOrEmpty(translation)) { stringVariable = translation; } } </code></pre> <p>As I see, this code can be refactored to one method, that receives the "object" to set and SectionKeyName. So it can be something like:</p> <pre><code>public void Translate(ref target, string SectionKeyName) { target = SectionKeyName; if (!string.IsNullOrEmpty(SectionKeyName)) { string translation = Translator.Translate(SectionKeyName); if (!string.IsNullOrEmpty(translation)) { target = translation; } } } </code></pre> <p><strong>BUT</strong>: I will can not use that method in case when I want to assign texBox.Text, since properties can not be passed byref.... <a href="https://stackoverflow.com/questions/1402803/passing-properties-by-reference-in-c-sharp">I found topic on SO where is solution for properties</a>, but it solves the properties and I stuck with fields / variables....</p> <p>Please help me to find the way to write a single method that will handle all of my cases...</p> <pre><code>//This method will work to by varFieldProp = Translate(SectionKeyName, SectionKeyName), but would like to see how to do it with Lambda Expressions. public string Translate(string SectionKeyName, string DefaultValue) { string res = DefaultValue; //this is string property of control or of any other type if (!string.IsNullOrEmpty(SectionKeyName)) { string translation = Translator.Translate(SectionKeyName); if (!string.IsNullOrEmpty(translation)) { res = translation; } } return res; } </code></pre> <p>Thank you !!!</p>
 

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