help|Win FORMS - read text from "textBox" that just created

Matan Maimon

First, here's my code:

                TextBox  textBox1 = new TextBox();
                textBox1.Name = "textBox1";
                textBox1.Text = "hellow";

as you see I create here a new "textBox" that call "textBox1".
Now, if I want to read his text (textBox1.Text), how can I do that?

I of course talk about how can I do that from another function but in the same FORM, for example:

    private void newBox()
    {
                TextBox  textBox1 = new TextBox();
                textBox1.Name = "textBox1";
                textBox1.Text = "hellow";
    }

    private void readText()
    {
        newBox();
        MessageBox.Show(textBox1.Text);
    }

This code above will give me an Error!

Although that he create the "textBox1" before he try display it on "MessageBox" he cant read him, and will think that he even not existent.

I explain myself best that I can, I know that have some problem with my english, but still I expect to get some answers,
thank a lot.

2 Replies

Know the answer? Post it — somebody with the same question will find it here.

Sam Hobbs16y ago
Yes, textBox1 does not exist outside the scope of newBox(). This is fundamental about C#; you should read a good book about C#. You need to declare textBox1 as a member of the form, not an object local to the function. Also, if you want to see the textbox in the form, you need to add it to the Controls collection for the form.

christopher mercado16y ago

  private String newBox()
        {
            TextBox textBox1 = new TextBox();
            textBox1.Name = "textBox1";
            textBox1.Text = "hellow";

            return textBox1.Text;
        }

        private void readText()
        {
            
            MessageBox.Show(newBox());
        }

hope it helps