c# - How to format a string to a fixed length string

String format fixed length
string-format-fixed-length.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 stringValue = "red";
        string stringValue2 = "green";
        string stringValue3 = "yellow";
        string stringValue4 = "crimson";
        string stringValue5 = "indianred";

        Label1.Text = "string value: " + stringValue.ToString();
        Label1.Text += "<br />string value2: " + stringValue2.ToString();
        Label1.Text += "<br />string value3: " + stringValue3.ToString();
        Label1.Text += "<br />string value4: " + stringValue4.ToString();
        Label1.Text += "<br />string value5: " + stringValue5.ToString();

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

        //make string fixed length 25
        Label1.Text += stringValue.PadLeft(25, '-');
        Label1.Text += "<br />";
        Label1.Text += stringValue2.PadLeft(25, '-');
        Label1.Text += "<br />";
        Label1.Text += stringValue3.PadLeft(25, '-');
        Label1.Text += "<br />";
        Label1.Text += stringValue4.PadLeft(25, '-');
        Label1.Text += "<br />";
        Label1.Text += stringValue5.PadLeft(25, '-');

        //another technique to format string fixed length
        //String.Format("color = |{0,25}|", stringValue);
    }  
</script>  
  
<html xmlns="http://www.w3.org/1999/xhtml">  
<head id="Head1" runat="server">  
    <title>c# example - string format fixed length</title>  
</head>  
<body>  
    <form id="form1" runat="server">  
    <div>  
        <h2 style="color:MidnightBlue; font-style:italic;">  
            c# example - string format fixed length
        </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 format fixed length"  
            OnClick="Button1_Click"
            Height="40"  
            Font-Bold="true"  
            />  
    </div>  
    </form>  
</body>  
</html>
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