You can use the below namespace and class to generate Random Password.

Namespace : using System.Web.Security;

Class : Membership

Function : GeneratePassword

Now move the mouse on the GeneratePassword method. it contains two parameter which defines in the below image.

RandomPassword.jpg

aspx.cs code

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.Security;

public partial class _Default : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

string Password = Membership.GeneratePassword(6, 2);

Label1.Text = "New Password is:" + Password;

}

}

Now press CTRL+ F5 to run the application and test it.