c# - String contains ignorecase

String contains ignorecase
string-contains-ignorecase.aspx

<%@ Page Language="C#" AutoEventWireup="true"%>

<!DOCTYPE html>  
<script runat="server"> 
    protected void Button1_Click(object sender, System.EventArgs e)  
    {
        //this section create a string variable.
        string stringPlants = "Cabinet Cherry, Coffee Plant, Carrot Weed, Canada Root";

        Label1.Text = "string..................<br />";
        Label1.Text += stringPlants;

        string wordToCheck = "CHeRRy";
        string wordToCheck2 = "Coneflower";

        //this line check string exists 'CHeRRy' or not case insensitive.
        Boolean result = stringPlants.ToLower().Contains(wordToCheck.ToLower());

        //this line check string contains 'Coneflower' or not ignore case.
        Boolean result2 = stringPlants.ToLower().Contains(wordToCheck2.ToLower());

        Label1.Text += "<br /><br />string contains (CHeRRy) ignore case?......................";
        Label1.Text += "<br />" + result.ToString();

        Label1.Text += "<br /><br />string contains (Coneflower) ignore case?......................";
        Label1.Text += "<br />" + result2.ToString();
    }  
</script>  
  
<html xmlns="http://www.w3.org/1999/xhtml">  
<head id="Head1" runat="server">  
    <title>c# example - string contains ignorecase</title>  
</head>  
<body>  
    <form id="form1" runat="server">  
    <div>  
        <h2 style="color:MidnightBlue; font-style:italic;">  
            c# example - string contains ignorecase
        </h2>  
        <hr width="550" align="left" color="Gainsboro" />  
        <asp:Label   
            ID="Label1"   
            runat="server"  
            Font-Size="Large"
            >  
        </asp:Label>  
        <br /><br />
        <asp:Button   
            ID="Button1"   
            runat="server"   
            Text="string contains ignorecase"  
            OnClick="Button1_Click"
            Height="40"  
            Font-Bold="true"  
            />  
    </div>  
    </form>  
</body>  
</html>
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