c# - How to insert an element to an array

Array insert
array-insert.aspx

<%@ Page Language="C#" AutoEventWireup="true"%>  
  
<!DOCTYPE html>  
<script runat="server">  
    protected void Button1_Click(object sender, System.EventArgs e)  
    {
        string[] birds = new string[]
        {
            "Pygmy Sunbird",
            "Socotra Sunbird"
        };

        int[] numbers = { 10,50,75};

        Label1.Text = "birds array.........<br />";
        foreach (string s in birds)
        {
            Label1.Text += s + "<br />";
        }

        Label1.Text += "<br />numbers array.........<br />";
        foreach (int i in numbers)
        {
            Label1.Text += i.ToString() + "<br />";
        }

        Array.Resize(ref birds, birds.Length + 1);
        birds[birds.Length - 1] = "Bronze Sunbird";

        Array.Resize(ref numbers, numbers.Length + 1);
        numbers[numbers.Length - 1] = 100;

        Label1.Text += "<br />after added new item in birds array.........<br />";
        foreach (string s in birds)
        {
            Label1.Text += s + "<br />";
        }

        Label1.Text += "<br />after added new item in numbers array.........<br />";
        foreach (int i in numbers)
        {
            Label1.Text += i.ToString() + "<br />";
        }
    }  
</script>  
  
<html xmlns="http://www.w3.org/1999/xhtml">  
<head id="Head1" runat="server">  
    <title>c# example - array insert</title>  
</head>  
<body>  
    <form id="form1" runat="server">  
    <div>  
        <h2 style="color:DarkBlue; font-style:italic;">  
            c# example - array insert
        </h2>  
        <hr width="550" align="left" color="LightBlue" />    
  
        <asp:Label   
            ID="Label1"   
            runat="server"  
            Font-Size="Large"  
            >  
        </asp:Label>  
        <br />
        <asp:Button   
            ID="Button1"   
            runat="server"   
            Text="array insert"  
            OnClick="Button1_Click"
            Height="40"  
            Font-Bold="true"  
            />  
    </div>  
    </form>  
</body>  
</html>
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