谷歌汇率转换API错误 [英] Google Currency Converter API Error

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本文介绍了谷歌汇率转换API错误的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

下面是我的ASPX code:

 <%@页标题=主页LANGUAGE =C#的MasterPageFile =〜/ Site.master母AutoEventWireup =真codeFILE =默认。 aspx.cs继承=_默认%GT;< ASP:内容ID =HeaderContent=服务器ContentPlaceHolderID =HeadContent>
< / ASP:内容>
< ASP:内容ID =的BodyContent=服务器ContentPlaceHolderID =日程地址搜索Maincontent>
    < ASP:标签ID =Label1的=服务器文本=从货币:前景色=黑>< / ASP:标签>
    < ASP:文本框ID =TextBox1的=服务器>< / ASP:文本框>< BR />< BR />
    < ASP:标签ID =Label2的=服务器文本=选择货币:前景色=黑>< / ASP:标签>
    < ASP:文本框ID =TextBox2中=服务器>< / ASP:文本框>< BR />< BR />
    < ASP:标签ID =LABEL3=服务器文本=金额:前景色=黑>< / ASP:标签>
    < ASP:文本框ID =TextBox3=服务器>< / ASP:文本框>< BR />< BR />
    < ASP:标签ID =Label4=服务器文本=速率:前景色=黑>< / ASP:标签>
    < ASP:文本框ID =TextBox4=服务器>< / ASP:文本框>< BR />< BR />
    < ASP:按钮的ID =Button1的=服务器文本=按钮的onclick =的button1_Click/>
< / ASP:内容>

和我的C#code:

 使用系统;
使用System.Collections.Generic;
使用System.Linq的;
使用的System.Web;
使用System.Web.UI程序;
使用System.Web.UI.WebControls;
使用System.Net;
使用System.Text.RegularEx pressions;公共部分类_Default:System.Web.UI.Page
{
    保护无效的Page_Load(对象发件人,EventArgs的发送)
    {
    }
    保护无效的button1_Click(对象发件人,EventArgs的发送)
    {
        小数量= 0;
        字符串fromCurrency =;
        字符串toCurrency =;
        fromCurrency = TextBox1.Text.ToUpper();
        toCurrency = TextBox2.Text.ToUpper();
        金额= Convert.ToDecimal(TextBox3.Text);        Web客户端的Web =新的WebClient();
        开放的我们的uri =新的URI(的String.Format(http://www.google.com/ig/calculator?hl=en&q={2}{0}%3D%3F{1},fromCurrency,toCurrency,量));
        串响应= web.DownloadString(URI);
        正则表达式的regex ​​=新的正则表达式(RHS:\\\\\\。(\\\\ D * \\\\ D *));
        匹配匹配= regex.Match(响应);
        字符串测试= match.ToString();
        小数率= Convert.ToDecimal(match.Groups [1]。价值);
        TextBox4.Text = rate.ToString();
    }
}

我用这code为货币转换当我点击按钮它给人的错误
输入字符串的不正确的格式,在这条线
小数率= Convert.ToDecimal(match.Groups [1] .value的);

我提交值

  TextBox1的:美元
TextBox1的:INR
TextBox3:1


解决方案

下面是谷歌汇率转换使用C#的code

 公共静态字符串CurrencyConvert(十进制量,串fromCurrency,串toCurrency)
    {        //抓住你的价值观和构建Web请求的API
        字符串apiURL =的String.Format(https://www.google.com/finance/converter?a={0}&from={1}&to={2}&meta={3}, 。量,fromCurrency,toCurrency,Guid.NewGuid()的ToString());        //使您的网络请求,并抢在结果
        VAR请求= WebRequest.Create(apiURL);        //获取响应
        VAR的StreamReader =新的StreamReader(request.GetResponse()GetResponseStream(),System.Text.Encoding.ASCII。);        //抓住你的转换值(即2.45美元)
        变种结果= Regex.Matches(streamReader.ReadToEnd(),&所述;跨度类= \\BLD \\?>([^&所述] +)所述; /跨度>中)[0] .Groups [1 ]。值;        //得到的结果
        返回结果;
    }

Here is my ASPX Code:

<%@ Page Title="Home Page" Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<asp:Content ID="HeaderContent" runat="server" ContentPlaceHolderID="HeadContent">
</asp:Content>
<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">
    <asp:Label ID="Label1" runat="server" Text="From Currency : " ForeColor="Black"></asp:Label>
    <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox><br /><br />
    <asp:Label ID="Label2" runat="server" Text="To Currency : " ForeColor="Black"></asp:Label>
    <asp:TextBox ID="TextBox2" runat="server"></asp:TextBox><br /><br />
    <asp:Label ID="Label3" runat="server" Text="Amount : " ForeColor="Black"></asp:Label>
    <asp:TextBox ID="TextBox3" runat="server"></asp:TextBox><br /><br />
    <asp:Label ID="Label4" runat="server" Text="Rate : " ForeColor="Black"></asp:Label>
    <asp:TextBox ID="TextBox4" runat="server"></asp:TextBox><br /><br />
    <asp:Button ID="Button1" runat="server" Text="Button" onclick="Button1_Click" />
</asp:Content>

and my C# Code:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Net;
using System.Text.RegularExpressions;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        Decimal amount = 0;
        string fromCurrency = "";
        string toCurrency = "";
        fromCurrency = TextBox1.Text.ToUpper();
        toCurrency = TextBox2.Text.ToUpper();
        amount = Convert.ToDecimal(TextBox3.Text);

        WebClient web = new WebClient();
        Uri uri = new Uri(string.Format("http://www.google.com/ig/calculator?hl=en&q={2}{0}%3D%3F{1}", fromCurrency, toCurrency, amount));
        string response = web.DownloadString(uri);
        Regex regex = new Regex("rhs: \\\"(\\d*.\\d*)");
        Match match = regex.Match(response);
        string test = match.ToString();
        decimal rate = Convert.ToDecimal(match.Groups[1].Value);
        TextBox4.Text = rate.ToString();
    }
}

I am using this code for Currency Conversion when i click on Button it gives the error "Input string was not in a correct format" in this line "decimal rate = Convert.ToDecimal(match.Groups[1].Value);"

I submit value in

TextBox1 : USD
TextBox1 : INR
TextBox3 : 1

解决方案

Here's the code for Google Currency Converter using c#

 public static string CurrencyConvert(decimal amount, string fromCurrency, string toCurrency)
    {

        //Grab your values and build your Web Request to the API
        string apiURL = String.Format("https://www.google.com/finance/converter?a={0}&from={1}&to={2}&meta={3}", amount, fromCurrency, toCurrency, Guid.NewGuid().ToString());

        //Make your Web Request and grab the results
        var request = WebRequest.Create(apiURL);

        //Get the Response
        var streamReader = new StreamReader(request.GetResponse().GetResponseStream(), System.Text.Encoding.ASCII);

        //Grab your converted value (ie 2.45 USD)
        var result = Regex.Matches(streamReader.ReadToEnd(), "<span class=\"?bld\"?>([^<]+)</span>")[0].Groups[1].Value;

        //Get the Result
        return result;
    }

这篇关于谷歌汇率转换API错误的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

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