我有以下Linq声明:
var total = (from a in mobileChunk.Data select a.callCost).Sum();
callCost
是一个字符串。我需要将其转换为小数。这是怎么做到的?
答案 0 :(得分:4)
我会做这样的事......
public static class Extenders
{
public static decimal ToDecimal(this string str)
{
// you can throw an exception or return a default value here
if ( string.IsNullOrEmpty(str) )
return someDefaultValue;
decimal d ;
// you could throw an exception or return a default value on failure
if ( !decimal.TryParse(str, out d ) )
return someDefaultValue;
return d;
}
}
现在,在你的林肯......
var total = = (from a in mobileChunk.Data select a.callCost.ToDecimal()).Sum();
答案 1 :(得分:3)
也许你可以试试这个:
var total = (from a in mobileChunk.Data select decimal.Parse(a.callCost)).Sum();