How to register Client Script

using System.Text;

using System.IO;

        StringBuilder script = new StringBuilder();

        script.Append("<script type=\"text/javascript\">");

        script.Append("Your Code");

        script.Append("</script>");

        string loadscript = imgscript.ToString();

        Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "clientScript", loadscript, false);