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C# 如何使从groupbox中选择的单选按钮显示在标签中?_C#_Radio Button_Label_Groupbox - Fatal编程技术网

C# 如何使从groupbox中选择的单选按钮显示在标签中?

C# 如何使从groupbox中选择的单选按钮显示在标签中?,c#,radio-button,label,groupbox,C#,Radio Button,Label,Groupbox,当用户从组框中的单选按钮中选择一个选项以显示在标签中时,是否有一种方法 它将在numberPhoneTextBox.Text后面的线路上显示数量/电话类型 共有3个单选按钮供用户选择 private void displayButton_Click(object sender, EventArgs e) { summaryLabel.Text = "Receipt Summary\n" + "--------------\n" + "Name: " + n

当用户从组框中的单选按钮中选择一个选项以显示在标签中时,是否有一种方法

它将在
numberPhoneTextBox.Text
后面的线路上显示数量/电话类型

共有3个单选按钮供用户选择

private void displayButton_Click(object sender, EventArgs e)
{
    summaryLabel.Text = "Receipt Summary\n" +
        "--------------\n" +
        "Name: " + nameTextBox.Text +
        "\nAddress: " + streetTextBox.Text +
        "\nCity: " + cityTextBox.Text +
        "\nState: " + stateTextBox.Text +
        "\nZip Code: " + zipTextBox.Text +
        "\nPhone Number: " + phoneNumberTextBox.Text +
        "\nDate: " + dateMaskedBox.Text +
        "\n-------------------------" +
        "\nQuantity/Phone Type: " + numberPhoneTextBox.Text + "/";
}

不幸的是,你必须用手来做。您可以定义执行任务的方法或属性,以避免重复代码,如下所示:

String GetRadioButtonValue() {
         if( radioButton1.Checked ) return radioButton1.Text;
    else if( radioButton2.Checked ) return radioButton2.Text;
    else                            return radioButton3.Text;
}
更新:

显然OP的赋值“不允许用户使用if/else语句”-这是非常超现实的,但您可以通过几种方式绕过它,例如使用
?:
操作符:

String GetRadioButtonValue() {
    return radioButton1.Checked ? radioButton1.Text
         : radioButton2.Checked ? radioButton2.Text
                                : radioButton3.Text;
}
另一个选项是使用事件:

private String _selectedRadioText;

public MyForm() { // your form's constructor
    InitializeComponent();
    radioButton1.CheckedChanged += RadioButtonCheckedChanged;
    radioButton2.CheckedChanged += RadioButtonCheckedChanged;
    radioButton3.CheckedChanged += RadioButtonCheckedChanged;
    // or even:
    // foreach(Control c in this.groupBox.Controls)
    //     if( c is RadioButton )
    //         ((RadioButton)c).CheckedChanged += RadioButtonCheckedChanged;

    // Initialize the field
    _selectedRadioText = radioButton1.Text;
}

private void RadioButtonCheckedChanged(Object sender, EventArgs e) {
    _selectedRadioText = ((RadioButton)sender).Text;
}

// then just concatenate the _selectedRadioText field into your string

顺便说一句,你应该摆脱使用字符串连接的习惯。效率很低。相反,请尝试以下方法:

private void displayButton_Click(object sender, EventArgs e)
{
    summaryLabel.Text =
        string.Format(
            "Receipt Summary\n--------------\nName: {0}\nAddress: {1}\nCity: {2}\nState: {3}\nZip Code: {4}\nPhone Number: {5}\nDate: {6}\n-------------------------\nQuantity/Phone Type: {7}/",
            nameTextBox.Text,
            streetTextBox.Text,
            cityTextBox.Text,
            stateTextBox.Text,
            zipTextBox.Text,
            phoneNumberTextBox.Text,
            dateMaskedBox.Text,
            numberPhoneTextBox.Text);
}

测试了它,你的方式工作。但是我刚刚检查了项目分配,它不允许使用if/else语句。。真可惜。要做到这一点还有很长的路要走?谢谢你的帮助!我已经编辑了你的标题。请参阅“”,其中的共识是“不,他们不应该”。