c# - How to convert a string to an int array

String to int array
string-to-int-array.aspx

<%@ Page Language="C#" AutoEventWireup="true"%>
  
<!DOCTYPE html>    
<script runat="server">  
    protected void Button1_Click(object sender, System.EventArgs e)
    {
        //this line create a string variable.
        string stringOfInteger = "1,5,10,15,,,20,25,30";

        Label1.Text = "string of ip integer value............<br />";
        Label1.Text += stringOfInteger;

        //split string and create an integer data type array.
        int[] intArray = stringOfInteger.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries).Select(int.Parse).ToArray();

        Label1.Text += "<br /><br />elements of int array............<br />";
        foreach (int i in intArray)
        {
            Label1.Text += "<br />"+i;
        }
    }    
</script>    
    
<html xmlns="http://www.w3.org/1999/xhtml">    
<head id="Head1" runat="server">    
    <title>c# example - string to int array</title>    
</head>    
<body>    
    <form id="form1" runat="server">    
    <div>    
        <h2 style="color:MidnightBlue; font-style:italic;">    
            c# example - string to int array
        </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 to int array"    
            OnClick="Button1_Click"  
            Height="40"    
            Font-Bold="true"    
            />    
    </div>    
    </form>    
</body>    
</html>
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