Question

strFirstName = txtFirstName.Text;
strLastName = txtLastName.Text;

lblSummary = "FirstName:" + strFirstName + Environment.NewLine +
   "Last Name:" + strLastName + Environment.NewLine +
   "Gross Income:" + decGrossIncome.ToString("c") + Environment.NewLine +
   "Taxes Due:" + decTaxesDue.ToString("c") + Environment.NewLine +
   "Total Payments:" + decTotalPayments.ToString("c") + Environment.NewLine +
   "Total Amount Due:" + decTotalAmountDue.ToString("c");


lblSummary.Text = strSummary;

* 注意 *以下内容包含错误

"Total Amount Due:" + decTotalAmountDue.ToString("c");

我得到的错误是：

错误1无法将类型'string'隐式转换为'System.Windows.Forms.Label'E：\ CIS 162 AD \ CS03 \ CS03 \ CS03 \ Form1.cs 79 37 CS03

Answer 1

您尝试将字符串值直接分配给Label变量。我怀疑你的意思是：

string strSummary = "FirstName:" + strFirstName + Environment.NewLine +
    "Last Name:" + strLastName + Environment.NewLine +
    "Gross Income:" + decGrossIncome.ToString("c") + Environment.NewLine +
    "Taxes Due:" + decTaxesDue.ToString("c") + Environment.NewLine +
    "Total Payments:" + decTotalPayments.ToString("c") + Environment.NewLine +
    "Total Amount Due:" + decTotalAmountDue.ToString("c");

lblSummary.Text = strSummary;

我个人建议使用string.Format，并顺便抛弃伪匈牙利语命名。

string summary = string.Format("First Name: {1}{0}" + 
                               "Last Name: {2}{0}" +
                               "Gross Income: {3:c}{0}" +
                               "Taxes Due: {4:c}{0}" +
                               "Total Payments: {5:c}{0}" +
                               "Total Amount Due: {6:c}",
                               Environment.NewLine, firstName, lastName,
                               grossIncome, taxesDue, totalPayments,
                               totalAmountDue);

// I'm not so hot on naming controls, so I'm not saying this is great - but I
// prefer it not to be control-type-specific; what's important is that it's a
// control we're using to output the summary.
summaryOutput.Text = summary;

需要帮助将标签转换为字符串以在另一个标签框中输出以进行汇总：C＃

1 个答案: