Question

我收到此错误＆＃34;异常详细信息：System.FormatException：输入字符串的格式不正确。＆＃34;看来我的Convert和Parse没有用。我使用ASP.NET C＃。还有一种方法可以只读取数字值而不是使用文本框吗？

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="Payroll" runat="server">
<div>

    <h1>Exception Painting</h1>
    <h2>Payroll Calculator</h2>

    <p>Employee Name: <asp:TextBox ID="Name" runat="server"></asp:TextBox>
    <p>Pay Rate: <asp:TextBox ID="PayRate" runat="server"></asp:TextBox>
    <p>Salary Employee: <asp:TextBox ID="SalaryEmployee" runat="server"></asp:TextBox>
    <p>Hours Worked: <asp:TextBox ID="HoursWorked" runat="server"></asp:TextBox>

     <asp:Button ID="Submit" runat="server" Text="Submit" />

</div>
</form>

<%
    double overtimeHours = 0;
    double overtimePay = 0;
    double regularPay = 0;
    double totalPay = 0;
    double regularHours = 0;
    double basePay = 0;
    double hrsWrked = 0;
    double payRt = 0;

    string nm = Name.Text;

    hrsWrked = Convert.ToDouble(HoursWorked.Text);
    //I cant figure out what im doing wrong here..
    hrsWrked = double.Parse(HoursWorked.Text);

    string slry = Name.Text;

    payRt = Convert.ToDouble(PayRate.Text);
    payRt = double.Parse(PayRate.Text);

    double overtimePayRt = payRt * 1.5;

    if (Page.IsPostBack)
    {
        Payroll.Visible = false;

        if (SalaryEmployee.Equals("no") && hrsWrked > 40)
            overtimeHours = hrsWrked - 40;
            regularHours = hrsWrked - overtimeHours;
            overtimePay = overtimeHours * overtimePayRt;
            regularPay = payRt * regularHours;
            totalPay = overtimePay + regularPay;
            basePay = hrsWrked * 52 * totalPay;
            Response.Write("Employee Name: " + nm + "Base Salary: " + basePay + "Hours Worked: " + hrsWrked + "Total Weekly Pay: " + totalPay);

        if (SalaryEmployee.Equals("yes"))
            regularHours = 40;
            totalPay = payRt * regularHours;
            basePay = hrsWrked * 52 * totalPay;
            Response.Write("Employee Name: " + nm + "Base Salary: " + basePay + "Hours Worked: "           + hrsWrked + "Total Weekly Pay: " + totalPay);
    }
    %>

</body>
</html>

Answer 1

您正在解析和转换未初始化的值

<p>Employee Name: <asp:TextBox ID="Name" runat="server"></asp:TextBox>
<p>Pay Rate: <asp:TextBox ID="PayRate" runat="server">0.0</asp:TextBox>
<p>Salary Employee: <asp:TextBox ID="SalaryEmployee" runat="server">0.0</asp:TextBox>
<p>Hours Worked: <asp:TextBox ID="HoursWorked" runat="server">0.0</asp:TextBox>

这将使您的代码能够编译，但是每次用户更改它们时都需要检查这些值，因为只要您的值无法解析或正确转换，它就会中断

这是一个捕获错误的方法示例。

bool bueno = true;//spanish for good




try
{
    payRt = Convert.ToDouble(PayRate.Text);
    payRt = double.Parse(PayRate.Text);
    //I cant figure out what im doing wrong here..
    hrsWrked = double.Parse(HoursWorked.Text);
}
catch (System.FormatException fEX)
{
    bueno = false;
    Response.Write(fEX.Message);//you could do more here 
}
catch (System.OverflowException ofEX)
{
    bueno = false;
    Response.Write(ofEX.Message);//you could do more here 
}
catch (System.ArgumentException aEX)
{
    bueno = false;
    Response.Write(aEX.Message);//you could do more here 
}

//I would do more about these errors but this is an example


if(bueno)
{
    double overtimePayRt = payRt * 1.5;

    if (Page.IsPostBack)
    {

异常详细信息：System.FormatException：输入字符串的格式不正确。解析不工作

1 个答案: