Replacing <br> in a textbox

I have a textbox in a Datalist with text that I get from a Database. There are alot of <br> in that text and I want linebreaks instead of <br>, This is what it looks like:

((TextBox)(EditProductList.Items[0].FindControl("txtEditDescription"))).Text.Replace("<br>", "\r\开发者_如何学Pythonn");

 <asp:DataList ID="EditProductList" runat="server">
   <ItemTemplate>
     <asp:TextBox ID="txtEditDescription" runat="server" TextMode="MultiLine" Height="350px"
                            Width="350px" Text='<%#Eval("Description") %>'></asp:TextBox>
  </ItemTemplate>
</asp:DataList>

I get the text but I get the <br> as well.

You actually have to assign the string returned by Replace() to the Text property again.

var textBox = (TextBox)(EditProductList.Items[0].FindControl("txtEditDescription"));
textBox.Text = textBox.Text.Replace("<br>", "\r\n");

Try this instead (but it should be refactored):

Using your original code:

((TextBox)(EditProductList.Items[0].FindControl("txtEditDescription"))).Text = 
          ((TextBox)(EditProductList.Items[0].FindControl("txtEditDescription"))).Text.Replace("<br>", "\r\n");

And refactor it like this:

TextBox textBox = ((TextBox)(EditProductList.Items[0].FindControl("txtEditDescription")));
textbox.Text = textBox.Text.Replace("<br>", "\r\n");

Notice that in the refactoring I'm replacing the lookup with a reference to the already found control.

The reason why we do it like this is that the .Replace function doesn't mutate the object in question, it returns a mutated version of the object, so to speak.