c# - 从 C# 中文本框的单选按钮获取值

Question

我有一个 C# 表单应用程序。我需要在文本框中获取单选按钮值。我知道这些方法是私有(private)的，我更改为公共(public)，但它不起作用。我需要通过按下按钮获取 value1、value2、value3 和 value4。谁能告诉我一种在文本框中获取值的方法......

private void groupBox1_Enter(object sender, EventArgs e)
    {
        double value1;
        if (radioButton1.Checked)
            value1 = 0.9;
        else if (radioButton2.Checked)
            value1 = 0.8;
        else if (radioButton3.Checked)
            value1 = 0.7;
        else if (radioButton4.Checked)
            value1 = 0.3;
        else if (radioButton5.Checked)
            value1 = 0.5;
        else
            MessageBox.Show("Oda Tipi girilmedi.");
    }

    private void groupBox2_Enter(object sender, EventArgs e)
    {
        double value2;
        if (radioButton6.Checked)
            value2 = 1;
        else if (radioButton7.Checked)
            value2 = 0.8;
        else if (radioButton8.Checked)
            value2 = 0.6;
        else
            MessageBox.Show("İzolasyon Tipi girilmedi.");
    }

    private void groupBox3_Enter(object sender, EventArgs e)
    {
        double value3;
        if (radioButton9.Checked)
            value3 = 0.9;
        else if (radioButton10.Checked)
            value3 = 1;
        else
            MessageBox.Show("Cam Tipi girilmedi.");

    }

    private void groupBox4_Enter(object sender, EventArgs e)
    {
        double value4;
        if (radioButton11.Checked)
            value4 = 1;
        else if (radioButton12.Checked)
            value4 = 0.9;
        else
            MessageBox.Show("Formül katsayısı girilmedi.");
    }

    private void button1_Click(object sender, EventArgs e)
    {
        textBox5.Text=Convert.ToString(value1*value2*value3*value4*(Convert.ToDouble(textBox2.Text))*(Convert.ToDouble(textBox3.Text))*(Convert.ToDouble(textBox4.Text)));

    }

Answer 1

您可以将变量(value1 等)移至类作用域，或者将所有内容放入 button1_Click 事件处理程序中，如 @SteveDanner 建议的那样，或者您可以编写一个更通用的解决方案。如果您创建更多选项(RadioButtons)，它可以很容易地扩展。

// Store values for each RadioButton in a dictionary.
private Dictionary<RadioButton, double> values = 
    new Dictionary<RadioButton, double>();

private Dictionary<GroupBox, string> messages = 
    new Dictionary<GroupBox, string>();

public Form1()
{
      InitializeComponent();

      // Associate values with radio buttons.
      values[radioButton1] = 0.9;
      // repeat the same for others...

      // Associate values messages with group boxes.
      messages[groupBox1] = "Oda Tipi girilmedi.";
      // repeat the same for others...
}

#region GroupBox.Enter event handlers.

private void groupBox1_Enter(object sender, EventArgs e)
{
    RadioButton radioButton = GetSelectedRadioButton(sender as GroupBox);
    if (radioButton == null)
    {
        MessageBox.Show(messages[sender as GroupBox]);
    }
}

// Here you can either repeat the same for other group boxes 
// or simply assign this event hander to all of them. 
// It will get the right message for each group.

#endregion

// Gets the selected radio button from the specified group.
private void RadioButton GetSelectedRadioButton(GroupBox groupBox)
{
    RadioButton radioButton = 
        groupBox
        .Controls
        .OfType<RadioButton>()
        .Where(rb => rb.Checked)
        .FirstOrDefault();
    return radioButton;
}

// Gets selected value from the specified group.
private double GetSelectedValue(GroupBox groupBox)
{
    RadioButton radioButton = GetSelectedRadioButton(groupBox);
    if (radioButton == null)
    {
        // Nothing selected yet.
        return double.NaN;
    }
    else
    {
        // Get the value from the dictinary.
        return values[radioButton];
    }
}

private void button1_Click(object sender, EventArgs e)
{
    // Get the selected values.
    double value1 = GetSelectedValue(groupBox1);
    double value2 = GetSelectedValue(groupBox2);
    double value3 = GetSelectedValue(groupBox3);
    double value4 = GetSelectedValue(groupBox4);

    // Check other values in the same way.
    if (double.IsNaN(value1))
    {
        MessageBox.Show(message[groupBox1]);
    }

    textBox5.Text = Convert.ToString(
    value1 
    * value2 
    * value3 
    * value4 
    * (Convert.ToDouble(textBox2.Text)) 
    * (Convert.ToDouble(textBox3.Text)) 
    * (Convert.ToDouble(textBox4.Text)));

}