使用C#将新价格添加到旧价格并将结果保存在文本框中 [英] Adding new prices to old one and keeping the result in a textbox using C#
问题描述
谢谢你们.我刚刚发现了我的问题.
我宣布十进制价格= .00m；
对于要解析的txtTotalSales.Text，.00成为问题.非常感谢你们到目前为止向我展示的合作.
现在进入下一个级别，这是关于我之前提出的第二个问题.请检查下面的代码，然后告诉我该怎么做.
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< pre>密封的类SerialPortDataRead//用于串行端口通信
{
//使用基本设置创建串行端口
私有只读SerialPort端口=新的SerialPort("COM5"，9600，Parity.None，8，StopBits.One);
私有只读Form1 form1;
公共SerialPortDataRead(Form1 form1)
{
//TODO:完整的成员初始化
this.form1 = form1;
}
公共SerialPortDataRead()
{
//TODO:完整的成员初始化
}
私有无效Serial()
{
//发出默认的系统声音以指示传入的数据
SystemSounds.Beep.Play();
//当端口的缓冲区中有数据等待时，附加一个要调用的方法
port.DataReceived + = port_DataReceived;
//开始交流
port.Open();
//输入一个应用程序循环以使该线程保持活动状态
Application.Run();
}
私有无效port_DataReceived(对象发送者，SerialDataReceivedEventArgs e)
{//将传入的数据排列在数组中
string [] PortVal = {port.ReadExisting()};
double []检查=新的double [6]
{120，120，100，100，150，100};//这是价格数组
字符串[] SecondMenuList =新字符串[6]
{螺丝驱动器"，胶带"，胶水"，标记"，卤素"}}///这是主数组
字符串FirstSelection =";
字符串值=";
使用(Form1 frm = new Form1())
{
string [] c = {"1"，"2"，"3"，"4"};
对于(int i = 0; i& lt; 3; i ++)
如果(PortVal [i] == SecondMenuList [i])//这是问题所在
//我只想比较
PortVal中每个元素的前三个字母
//具有
中元素的前三个字母的任何索引
//SecondMenulist数组.但我只能比较元素
//请问我该怎么办?
{
FirstSelection + = String.Format("{0} \ t:{1:c} \ r \ n"，SecondMenuList [i]，Check [i]);
值= Check [i] .ToString("c");
如果(PortVal.Contains(c [i]))
{
//比较之后，如果有匹配项，则添加匹配的元素
//在SecondMenuList数组中到DataGrid表(名为Table)
this.form1._names.Add("TABLE");
this.form1._dataArray.Add(new string [] {c [i]});
}
this.form1._names.Add("ITEM");
this.form1._dataArray.Add(new string [] {SecondMenuList [i]});
this.form1._names.Add("PRICE");
this.form1._dataArray.Add(new string [] {Check [i] .ToString("c")});
}
frm.txtTotalSales.Text =值;
}
DateTime日期=新的DateTime();
日期= DateTime.Now;
PrinterHelper.SendStringToPrinter(String.Format(订单\ r \ n \ n \ t {0} \ t:{1} \ r \ n \ n \ t {2}"，
FirstSelection，
值，
日期))；
}
}
公共Form1()
{
InitializeComponent();
dataGridView1.DataSource = GetResultsTable();
}
公共Form1(TextBox txtTotalSales)
{
//TODO:完整的成员初始化
this.txtTotalSales = txtTotalSales;
}
私有静态SerialPortDataRead port_DataReceived()
{
抛出新的NotImplementedException();
}
公共DataTable GetResultsTable()
{
DataTable Table = new DataTable();
for(int i = 0; i& lt; this._dataArray.Count; i ++)
{
字符串名称= this._names [i];
Table.Columns.Add(name);
List& lt; object& gt; objectNumbers =新的List& amp; lt; object& gt;();
foreach(this._dataArray [i]中的字符串号)
{
objectNumbers.Add((object)number);
}
while(Table.Rows.Count& lt; objectNumbers.Count)
{
Table.Rows.Add();
}
for(int a = 0; a& amp; lt; objectNumbers.Count; a ++)
{
Table.Rows [a] [i] = objectNumbers [a];
}
}
返回表；
}
</pre>
首先，您需要保持TotalPrice不是字符串，而是一些形式的整数:int，float，decimal-其中之一可能是你要.然后，您可以将新订购的商品价格添加到其中，并适当地设置TextBox:
txtTotalPrice.Text = TotalPrice.ToString();
其次，您需要更详细地说明您要尝试做的事情-我无法从该描述中得出您要达到的目的.
您好，亲爱的
抱歉，我阅读了您的问题，但我听不懂，我认为这是一个非常非常简单的问题，如果您发送更完整的问题和代码，我可以轻松回答您的问题
您的信息仍然令人困惑，尽管我还是给了一个机会:
价格+ =支票[i]； // TotalPrice = Price.ToString("c"); //现在似乎变得不必要了 // 在文本框中解析价格 double dOldTotalPrice = Double .Parse(txtTotalPrice.TextTotalPrice); // 将新价格添加到旧总价中 double dNewTotalPrice = dOldTotalPrice +价格； // 假设价格是一个数字? // 将价格打印到文本框 txtTotalPrice.Text = dNewTotalPrice.ToString(" )
我想您必须对此稍作调整，但我希望它有助于将您推向正确的方向.后续问题当然是可以接受的(如果您有新代码，请在此下面添加注释以回答快速问题，如果您有新代码，请编辑原始问题并发表对此问题的评论，以便我得到通知.)
Thanks Guys. i just discovered my problem.
i Declared decimal Price = .00m;
for the txtTotalSales.Text to be parsed, the .00 becomes a problem. am just grateful for the coperation u guys have shown me so far.
Now am unto the next level and this is about the second question i posed before. Please check the code below and tell me what to do.
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<pre>sealed class SerialPortDataRead//for serial port communication
{
// Create the serial port with basic settings
private readonly SerialPort port = new SerialPort("COM5", 9600, Parity.None, 8, StopBits.One);
private readonly Form1 form1;
public SerialPortDataRead(Form1 form1)
{
// TODO: Complete member initialization
this.form1 = form1;
}
public SerialPortDataRead()
{
// TODO: Complete member initialization
}
private void Serial()
{
//beep the default system sound to indicate an incoming data
SystemSounds.Beep.Play();
// Attach a method to be called when there is data waiting in the port''s buffer
port.DataReceived += port_DataReceived;
// Begin communications
port.Open();
// Enter an application loop to keep this thread alive
Application.Run();
}
private void port_DataReceived(object sender, SerialDataReceivedEventArgs e)
{ // Arrange the incoming data in an array
string[] PortVal = { port.ReadExisting() };
double[] Check = new double[6]
{120, 120, 100, 100, 150, 100};//this is the price array
string[] SecondMenuList = new string[6]
{"Screw Driver", "Tape", "Glue", "Marker", "Halogen"};//this the mainarray
string FirstSelection = "";
string value = "";
using (Form1 frm = new Form1())
{
string[] c = { "1", "2", "3", "4" };
for (int i = 0; i &lt; 3; i++)
if (PortVal[i] == SecondMenuList[i])//this is where the problem lies
// I want to only compare the first three letters of each elements in PortVal at
//any index with the first three letters of the elements in the
//SecondMenulist array. but i can only compare the elements
//what should i do here PLEASE?
{
FirstSelection += String.Format("{0}\t:{1:c}\r\n", SecondMenuList[i], Check[i]);
value = Check[i].ToString("c");
if (PortVal.Contains(c[i]))
{
//after the comparison, if there is any match, add the matched element
//in the SecondMenuList array to the DataGrid Table (named Table)
this.form1._names.Add("TABLE");
this.form1._dataArray.Add(new string[] { c[i] });
}
this.form1._names.Add("ITEM");
this.form1._dataArray.Add(new string[] { SecondMenuList[i] });
this.form1._names.Add("PRICE");
this.form1._dataArray.Add(new string[] { Check[i].ToString("c") });
}
frm.txtTotalSales.Text = value;
}
DateTime Date = new DateTime();
Date = DateTime.Now;
PrinterHelper.SendStringToPrinter(String.Format("Order(s)\r\n\n\t{0}\t:{1}\r\n\n\t{2}",
FirstSelection,
value,
Date));
}
}
public Form1()
{
InitializeComponent();
dataGridView1.DataSource = GetResultsTable();
}
public Form1(TextBox txtTotalSales)
{
// TODO: Complete member initialization
this.txtTotalSales = txtTotalSales;
}
private static SerialPortDataRead port_DataReceived()
{
throw new NotImplementedException();
}
public DataTable GetResultsTable()
{
DataTable Table = new DataTable();
for (int i = 0; i &lt; this._dataArray.Count; i++)
{
string name = this._names[i];
Table.Columns.Add(name);
List&lt;object&gt; objectNumbers = new List&lt;object&gt;();
foreach (string number in this._dataArray[i])
{
objectNumbers.Add((object)number);
}
while (Table.Rows.Count &lt; objectNumbers.Count)
{
Table.Rows.Add();
}
for (int a = 0; a &lt; objectNumbers.Count; a++)
{
Table.Rows[a][i] = objectNumbers[a];
}
}
return Table;
}
</pre>
Thanks
Firstly, you need to keep TotalPrice not as a string, but as a number of some form: int, float, decimal - one of those is probably what you want. You can then add the new ordered item price into it, and set the TextBox appropriately:
txtTotalPrice.Text = TotalPrice.ToString();
Secondly, you need to explain in better detail what you are trying to do - I can''t work out from that description what you are trying to achieve.
Hello Dear
Sorry,i read your question but i did not understand it,i think this is a very very easy problem , if you send a more complete question and code i can answer you easily
Your information is still confusing, I give it a shot though:
Price += Check[i]; //TotalPrice = Price.ToString("c"); //seems unnessecary now //Parse the Price in the textbox double dOldTotalPrice = Double.Parse(txtTotalPrice.TextTotalPrice); //Add the new price to the old total double dNewTotalPrice = dOldTotalPrice + Price; //Assuming Price is a number? //Print the price into the TextBox txtTotalPrice.Text = dNewTotalPrice.ToString("c")
I guess you have to adapt this a little, but I hope it helped push you in the right direction. Follow up questions are of course welcome (add a Comment under this for quick questions, if you have new code, please edit your original question and post a comment about it so I get notified).
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