Manage CSS & Message Box(javascript) using C#.NET , ASP.NET Code at run time...

Task:  How can open a pop-up message box using asp.net or add css/javascript using c# code. (JavaScript alert box).

Description:  After the completing some task we have to show a message for user so that we need a message box. Here the first code is for creating a CSS dynamically using code and second one for generating a message box using c# asp.net code.

C# Code : For Dynamic Css C# Code

  protected void Page_Load(object sender, EventArgs e)

    {

  string c = "#f0ff0f";

        string d = "#0f0f00";

        LiteralControl ltr = new LiteralControl();

        ltr.Text = "<style type=\"text/css\" rel=\"stylesheet\">" +

                    @".d

                    {

                        color:" + c + @";

                    }

                    .d:hover

                    {

                        color:" + d + @";

                    }

                    </style>

                    ";

        this.Page.Header.Controls.Add(ltr);

    }

.

////////////////// Message Box in asp.net/c#.net website

C# Code : For Message Box in Asp.Net C#

    public void msgbox(string message)

    {

        string msg = @"alert('" + message + "');";

        ScriptManager.RegisterStartupScript(this, this.GetType(), "s1", msg, true);

    }