utilities.cs

在线 图书网上购物系统

using System;
using System.Collections.Generic;
using System.Text;
using System.Net.Mail;
using System.Drawing;

using System.Data;

using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Collections;

   public  class Utilities
    {

        public static void SendMail(string from, string to, string subject, string body)
        {
            
            SmtpClient mailClient = new SmtpClient(/*BalloonShopConfiguration.MailServer*/"");
           
            MailMessage mailMessage = new MailMessage(from, to, subject, body);
            /*
               // For SMTP servers that require authentication
               message.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate", 1);
               message.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusername", "SmtpHostUserName");
               message.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendpassword", "SmtpHostPassword");
              */
            // Send mail
            mailClient.Send(mailMessage);
        }

        // Send error log mail
        
        /*
        public static void LogError(Exception ex)
        {
            // get the current date and time
            string dateTime = DateTime.Now.ToLongDateString() + ", at "
                            + DateTime.Now.ToShortTimeString();
            // stores the error message
            string errorMessage = "Exception generated on " + dateTime;
            // obtain the page that generated the error
            System.Web.HttpContext context = System.Web.HttpContext.Current;
            errorMessage += "\n\n Page location: " + context.Request.RawUrl;
            // build the error message
            errorMessage += "\n\n Message: " + ex.Message;
            errorMessage += "\n\n Source: " + ex.Source;
            errorMessage += "\n\n Method: " + ex.TargetSite;
            errorMessage += "\n\n Stack Trace: \n\n" + ex.StackTrace;
            // send error email in case the option is activated in Web.Config
            if (BalloonShopConfiguration.EnableErrorLogEmail)
            {
                string from = "[e-mail]";
                string to = BalloonShopConfiguration.ErrorLogEmail;
                string subject = BalloonShopConfiguration.SiteName + " error report";
                string body = errorMessage;
                SendMail(from, to, subject, body);
            }
        }
         */
         

      
        
        public static void TieButton(Page page, Control TextBoxToTie, Control ButtonToTie)
        {
            // Init jscript
            string jsString = "";

            // Check button type and get required jscript
            if (ButtonToTie is LinkButton)
            {
                jsString = "if ((event.which && event.which == 13) || (event.keyCode && event.keyCode == 13)) {"
                    + page.ClientScript.GetPostBackEventReference(ButtonToTie, "").Replace(":", "$") + ";return false;} else return true;";
            }
            else if (ButtonToTie is ImageButton)
            {
                jsString = "if ((event.which && event.which == 13) || (event.keyCode && event.keyCode == 13)) {"
                    + page.ClientScript.GetPostBackEventReference(ButtonToTie, "").Replace(":", "$") + ";return false;} else return true;";
            }
            else
            {
                jsString = "if ((event.which && event.which == 13) || (event.keyCode && event.keyCode == 13)) {document."
                    + "forms[0].elements['" + ButtonToTie.UniqueID.Replace(":", "_") + "'].click();return false;} else return true; ";
            }

            // Attach jscript to the onkeydown attribute - we have to cater for HtmlControl or WebControl
            if (TextBoxToTie is HtmlControl)
            {
                ((HtmlControl)TextBoxToTie).Attributes.Add("onkeydown", jsString);
            }
            else if (TextBoxToTie is WebControl)
            {
                ((WebControl)TextBoxToTie).Attributes.Add("onkeydown", jsString);
            }
        }
         
        
        public static void BindingDataGridView(GridView dg, DataTable dt)
        {
            dg.DataSource = dt;
            dg.DataBind();
        }

       public static void BindingDropDownList(DropDownList ddl, DataTable dt, string strTextField, string strValueField)
        {
            ddl.DataSource = dt;
            ddl.DataTextField = strTextField;
            if (strValueField != "" || strValueField != null)
                ddl.DataValueField = strValueField;
            ddl.DataBind();
        }

        public static void BindingListBox(ListBox lb, DataTable dt, string strDisplayMember, string strValueMember)
        {
            lb.DataSource = dt;
            lb.DataTextField = strDisplayMember;
            if (strValueMember != "" || strValueMember != null)
                lb.DataValueField = strValueMember;
            lb.DataBind();
        }


       public static string GetValueInDDLByText(DropDownList ddl,string strSelectDisplayMember)
       {
           string str = String.Empty;
           foreach(ListItem li in ddl.Items)
           {
               if (li.Text == strSelectDisplayMember)
               {
                   str = li.Value;
               }
           }
           return str;
       }

       public static ArrayList GetFontsName()
       {
           ArrayList al = new ArrayList();
           foreach(FontFamily oneFontFamily in FontFamily.Families)
           {
               al.Add(oneFontFamily.Name);
           }
           return al;
       }

       public static void BindingDataList(DataList dl,DataTable dt,string datakeyfield)
       {
           dl.DataSource = dt;
           dl.DataKeyField = datakeyfield;
           dl.DataBind();
       }
       public static void BindingDropDownList(DropDownList ddl, ArrayList al)
       {
           ddl.DataSource = al;
           ddl.DataValueField = ddl.DataTextField;
           ddl.DataMember = ddl.DataValueField;
           ddl.DataBind();
       }

       public static void SetSelectDropDownListByDisplayMember(DropDownList ddl, string strDisplayMember)
       {
           int i=0;
           foreach (ListItem li in ddl.Items)
           {
               if (li.Text == strDisplayMember)
               {
                   ddl.SelectedIndex = i;
                   break;
               }
               i++;
           }
       }

       public static void SetSelectDropDownListByValueMember(DropDownList ddl, string strValueMember)
       {
           int i = 0;
           foreach (ListItem li in ddl.Items)
           {
               if (li.Value == strValueMember)
               {
                   ddl.SelectedIndex = i;
                   break;
               }
               i++;
           }
          
       }
        
    }