无法分配，因为它是 C# 方法组? [英] Cannot Assign because it is a method group C#?

问题描述

无法分配AppendText"，因为它是方法组".

Cannot Assign "AppendText" because it is a "method group".

public partial class Form1 : Form
{
    String text = "";

    public Form1()
    {
        InitializeComponent();
    }

    private void button1_Click(object sender, EventArgs e)
    {
        String inches = textBox1.Text;
        text = ConvertToFeet(inches) + ConvertToYards(inches);
        textBox2.AppendText = text;
    }

    private String ConvertToFeet(String inches)
    {
        int feet = Convert.ToInt32(inches) / 12;
        int leftoverInches = Convert.ToInt32(inches) % 12;
        return (feet + " feet and " + leftoverInches + " inches." + " 
");
    }

    private String ConvertToYards(String inches)
    {
        int yards = Convert.ToInt32(inches) / 36;
        int feet = (Convert.ToInt32(inches) - yards * 36) / 12;
        int leftoverInches = Convert.ToInt32(inches) % 12;
        return (yards + " yards and " + feet + " feet, and " + leftoverInches + " inches.");
    }
}

错误位于 button1_Click 方法内的textBox2.AppendText = text"行上.

The error is on the line "textBox2.AppendText = text", inside the button1_Click method.

推荐答案

使用以下

textBox2.AppendText(text);

代替

textBox2.AppendText = text;

AppendText 不是属性而是方法.因此需要带参数调用，不能直接赋值.

AppendText is not a property but a method. Thus it needs to be invoked with parameter and cannot be assigned directly.

属性是特殊的方法，由于编译器中的特殊处理而支持赋值.

Properties are special methods, that support assignments due to special handling in compiler.

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