Get text from dynamicly created RichTextBox in onChange event

Question

How can I get the text from a dynamicly created RichTextBox and a dynamicly created rtb_TextChanged Event?

e.g:

    private void button1_Click(object sender, EventArgs e)
    {
        RichTextBox rtb = new RichTextBox();
        rtb.Name = "rtb" + i;
        rtb.Dock = DockStyle.Fill;

        rtb.TextChanged += rtb_TextChanged;

        Controls.Add(rtb);

    }

    void rtb_TextChanged(object sender, EventArgs e)
    {
        //string s = rtb.Text;    //How can I get the rtb.Text?
    }

Duplicate of: stackoverflow.com/questions/957441/…

Fka
– Fka

2015-04-20 19:22:20 +00:00
Commented Apr 20, 2015 at 19:22 — Fka
– Fka, Commented Apr 20, 2015 at 19:22
Or of: stackoverflow.com/questions/1536739/…

Der Kommissar
– Der Kommissar

2015-04-20 19:24:27 +00:00
Commented Apr 20, 2015 at 19:24 — Der Kommissar
– Der Kommissar, Commented Apr 20, 2015 at 19:24
Omg, thank you, i've searched but didnt found it.

StackUnderflow
– StackUnderflow

2015-04-20 19:26:04 +00:00
Commented Apr 20, 2015 at 19:26 — StackUnderflow
– StackUnderflow, Commented Apr 20, 2015 at 19:26

RoadieRich · Accepted Answer · 2015-04-20 19:24:23Z

3

You need to use the sender argument of your event handler:

void rtb_TextChanged(object sender, EventArgs e)
{
    RichTextBox rtb = (RichTextBox)sender;
    string s = rtb.Text;
    //... etc
}

answered Apr 20, 2015 at 19:24

RoadieRich

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Comments

MRebai · Accepted Answer · 2015-04-20 19:28:04Z

2

You just need to use the event parameter : sender

private void richTextBox1_TextChanged(object sender, EventArgs e)
{  
       RichTextBox rtb = (RichTextBox)sender;
       var str = rtb .Text;
}

answered Apr 20, 2015 at 19:28

MRebai

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Comments

jfin3204 · Accepted Answer · 2015-04-20 19:27:20Z

0

First rtb is not the name that you called the textbox. Since the textbox sent the message you could cast the sender to a textbox and look at its text property.

answered Apr 20, 2015 at 19:27

jfin3204

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