This program have a link which is fixed and never change. And it contains 5 textboxes. The fixed link is: 

```
<seite>utm_source=<website>_<page>_de&utm_medium=banner&utm_campaign=<kampagne>&utm_content=<format>

```

Every value in `<>` should be changed by textbox value. Here you got an image of my little program: 

![enter image description here](https://i.stack.imgur.com/ceu7k.png)

Now my problem is: the first value is correct, but the other values aren't. So for example, if i type in second texbox: "website" it does not only replace `<website>` with "website". it replaced `<website>` with `System.Windows.Forms.TextBox, Text: website`.

My Code I tried:

```
private void btn_SendAll_Click(object sender, EventArgs e)
        {
            txt_FinishLink.Text = txt_Site.Text + "utm_source=" + txt_Website + "_" + txt_Page + "_de&utm_medium=banner&utm_campaign=" + txt_Campaign + "&utm_content=" + txt_Format;
        }

```