为什么我不能将字符串值转换为十进制/浮点数 [英] Why Can't I Convert String Value To Decimal / Float

问题描述

我得到一个响应Json对象，我将其反序列化为



var v = JsonConvert.DeserializeObject< list>< currentvalue>>（CurrentContent）;



现在所需的值在v [0] .l_cur //200.00



string Value = v [0] .l_cur.ToString（）修剪（）;



我需要将此转换为十进制值



i尝试

< br $>
var CurrentStockValue = Convert.ToDecimal（Value）;



var CurrentStockValue = Decimal.Parse（Value，NumberStyle.AllowDecimalPoint，CultureInfo.Invarient） ;



我收到此错误



输入字符串格式不正确。



任何人都可以指导我完成这个..

I get a response Json object which i deserialize like

var v = JsonConvert.DeserializeObject<list><currentvalue>>(CurrentContent);

now the required value is in v[0].l_cur // "200.00"

string Value = v[0].l_cur.ToString().Trim();

I need to convert this to decimal Value

i tried

var CurrentStockValue = Convert.ToDecimal(Value);

var CurrentStockValue = Decimal.Parse(Value, NumberStyle.AllowDecimalPoint , CultureInfo.Invarient);

I get this error

"Input string was not in a correct format."

Can any one guide me through this..

推荐答案

首先查看你的数据：使用调试器在转换尝试之前检查Value的内容。

我猜它根本不包含200.0 - 但是如果不知道其中究竟是什么，那么每个人都在猜测。

当你知道它是什么时，看看它来自哪里：v [0] .l_cur，看看它包含了什么。



在某些时候，显然数据是无效的，然后它应该相对简单勒解决原因。但是在你知道确切的数据和问题是什么之前，你无法解决任何问题！

Start by looking at your data: use the debugger to examine the content of Value immediately prior to the conversion attempt.
I'm guessing it doesn't contain "200.0" at all - but without knowing exactly what is in it, everybody is just guessing.
When you know what is in that, look at where is came from: v[0].l_cur, and see what that contains.

At some point it will be obvious that the data is invalid, and then it should be relatively simple to work out why. But until you know what the exact data and problem is, you can't fix anything!

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