从设置文件c＃console应用程序读取用户设置值 [英] Reading User Setting value from setting file c# console application

问题描述

从设置文件读取值时出现空参考错误。

< setting name =   Last_Selected_Vodafone serializeas =  字符串 >  
< value /> 
 < /  设置 >  
 

i在设置文件中有此属性。当我尝试在c中访问它时＃

 Properties.Settings.Default.Last_Selected_Vodafone; 

i得到空引用错误..这可能是因为默认值为null并且它是一个日期时间属性......



如何设置

 datetime variable = datetime.now？

任何想法

解决方案

请尝试如下。



注意：如果需要，请进行必要的铸造。

  DateTime  variable = Properties.Settings。默认 .Last_Selected_Vodafone ??  DateTime 。现在; 

??运营商



现场演示： .NET FIDDLE

Null reference error occurs on reading value from setting file.

<setting name="Last_Selected_Vodafone" serializeas="String">
              <value />
          </setting>

i have this property in setting file . when i try to access this in c#

Properties.Settings.Default.Last_Selected_Vodafone;

i am getting null reference error.. that could be because default value is null and its a datetime property......

how can i set

datetime variable = datetime.now ?

any idea

解决方案

Please try is as below.

NOTE: Please do necessary casting if it requires.

DateTime variable = Properties.Settings.Default.Last_Selected_Vodafone ?? DateTime.Now;

?? Operator

LIVE DEMO : .NET FIDDLE

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