c# - How to find an element from an array

Array find
array-find.aspx

<%@ Page Language="C#" AutoEventWireup="true"%>  
  
<!DOCTYPE html>  
<script runat="server">  
    protected void Button1_Click(object sender, System.EventArgs e)  
    {
        string[] birds = new string[]
        {
            "Blue Duck",
            "Mandarin Duck",
            "Mallard",
            "Brown Teal",
            "Muscovy Duck"
        };

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

        //find only first element which match search query
        string startsWithB = Array.Find(birds, x => x.StartsWith("B"));
        string endsWithd = Array.Find(birds, x => x.EndsWith("d"));
        string endsWithduck = Array.Find(birds, x => x.EndsWith("duck",StringComparison.OrdinalIgnoreCase));

        Label1.Text += "<br />bird starts with [B]: " + startsWithB;
        Label1.Text += "<br />bird ends with [d]: " + endsWithd;
        Label1.Text += "<br />bird ends with [duck - ignore case]: " + endsWithduck;
    }  
</script>  
  
<html xmlns="http://www.w3.org/1999/xhtml">  
<head id="Head1" runat="server">  
    <title>c# example - array find</title>  
</head>  
<body>  
    <form id="form1" runat="server">  
    <div>  
        <h2 style="color:DarkBlue; font-style:italic;">  
            c# example - array find
        </h2>  
        <hr width="550" align="left" color="LightBlue" />    
  
        <asp:Label   
            ID="Label1"   
            runat="server"  
            Font-Size="X-Large"  
            >  
        </asp:Label>  
        <br /><br />
        <asp:Button   
            ID="Button1"   
            runat="server"   
            Text="test array find"  
            OnClick="Button1_Click"
            Height="40"  
            Font-Bold="true"  
            />  
    </div>  
    </form>  
</body>  
</html>
More c# examples