Cannot Assign because it is a method group C#?

Question

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." + " \n");
    }

    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.");
    }
}

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

Uh I tried it and it worked but for some reason, it won't display it in a new line. — puretppc, Nov 04 '13 at 16:55
Does the textbox have `MultiLine = True`? Also if one of the people below does answer your question, please accept their answer by clicking the tick next to it — Basic, Nov 04 '13 at 16:58
Yeah I set the properties to true but it still didn't work. :( — puretppc, Nov 04 '13 at 17:00
Add a new line after the text to be appended: `textBox2.AppendText(text + Environment.NewLine);` — Idle_Mind, Nov 04 '13 at 17:00

score 37 · Accepted Answer · answered Nov 04 '13 at 16:41

Use following

textBox2.AppendText(text);

Instead of

textBox2.AppendText = text;

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

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

score 6 · Answer 2 · answered Nov 04 '13 at 16:41

6

Do this instead (AppendText is a method, not a property; which is exactly what the error message is telling you):

textBox2.AppendText(text);

answered Nov 04 '13 at 16:41

Mansfield

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score 5 · Answer 3 · answered Nov 04 '13 at 16:41

5

textBox2.AppendText(text); is a method. You have to call it like one. You were performing an assignment operation on a method.

answered Nov 04 '13 at 16:41

P.Brian.Mackey

43,228
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score 5 · Answer 4 · answered Nov 04 '13 at 16:42

5

You have to call the AppendText in this way:

textBox1.AppendText("Some text")

answered Nov 04 '13 at 16:42

Stefano Bafaro

915
10
20

score 5 · Answer 5 · answered Nov 04 '13 at 16:42

5

AppendText is a method and you must call it.

textBox2.AppendText(text);

answered Nov 04 '13 at 16:42

Bogdan Beda

758
5
12

score 1 · Answer 6 · edited Dec 08 '19 at 22:58

1

I figured out that the variable name declared was similar to a method name and hence it didn't allow me to assign a value.
The moment I changed the name it worked!

edited Dec 08 '19 at 22:58

Yunnosch

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answered Dec 08 '19 at 22:54

P-Man-Coding

95
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6

This seems to focused on your own environment and situation. Please rephrase to turn this into an asnwer which is more generally helpful to others. – Yunnosch Dec 08 '19 at 22:57
1

I disagree with the comment above. Just because the solution solves a rarer error than the absolute most common error that any programmer will ever encounter, that doesn't make it value-less. What would make SO value-less if the only questions allowed are those that are related to just a small handful of the most common problems people encounter. SO has much more value when you can find solutions to EVERY problem someone runs into, not just the few that you have in the front of your mind. – Bryan Williams Sep 14 '21 at 16:04
It certainly helped me! Thank you @prattek! – Sotiris Zegiannis May 30 '22 at 12:08

Cannot Assign because it is a method group C#?

6 Answers6

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