Lambda表達式/委託賦值變量

Question

實際上我甚至無法確切地說如何正確調用這個東西，但我需要一些可以在一個方法中分配變量/屬性/字段的東西。我會盡量解釋...... 我有以下代碼：

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; 
    } 
} 

依我之見，這個代碼可以重構一個方法，接收「對象」設置和SectionKeyName。因此，它可以是這樣的：

public void Translate(ref target, string SectionKeyName) 
{ 
    target = SectionKeyName; 
    if (!string.IsNullOrEmpty(SectionKeyName)) 
    { 
     string translation = Translator.Translate(SectionKeyName); 
     if (!string.IsNullOrEmpty(translation)) 
     { 
      target = translation; 
     } 
    } 
} 

但：我會在我要指派texBox.Text不能使用該方法的情況下，因爲屬性無法按地址.... I found topic on SO where is solution for properties傳遞，但它解決了性能和我堅持了場/變量....

請幫我找編寫將處理所有的我的情況下，單個方法的方式......

//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; 
} 

謝謝你!!!

Answer 1

我想你想是這樣的：

public void Translate(Action<string> assignToTarget, string SectionKeyName) 
     { 
      assignToTarget(SectionKeyName); 
      if (!string.IsNullOrEmpty(SectionKeyName)) 
      { 
       string translation = Translator.Translate(SectionKeyName); 
       if (!string.IsNullOrEmpty(translation)) 
       { 
        assignToTarget(translation); 
       } 
      } 
     } 

但它會更好如果你只是刪除拉姆達並讓該函數返回字符串翻譯需要的時候使用。爲了完整起見，要調用此功能，您可以使用：

Translate(k=>textBox1.Text=k,sectionKeyName);