分享3段平时很实用的微代码

一。发送电子邮件
用的dll是微软自带的，觉得挺好用的！！

public class SimpleEmailHelper
    {
        private string _SmtpAdd;
        private string _UserID;
        private string _UserPsw;

        public SimpleEmailHelper(string smtpAddress, string userID, string userPsw)
        {
            _SmtpAdd = smtpAddress;
            _UserID = userID;
            _UserPsw = userPsw;
        }

        public bool Send(string from, string to, string subject, string message,string cc)
        {
            return Send(from, from, to, to, subject, message,cc);
        }

public bool Send(string from, string fromDisplay, string sendTo, string sendToDisplay,string subject, string message,string cc)
{

bool ret = true;

            SmtpClient client = new SmtpClient();
            client.Host = _SmtpAdd;//邮件服务器比如网易的是 smtp.163.COM
            client.Port = 25;//端口号，也可不写
            client.DeliveryMethod = SmtpDeliveryMethod.Network;//发送方式
            client.Credentials = new NetworkCredential(_UserID, _UserPsw);//用户名和密码

            MailMessage myMessage = new MailMessage();
            myMessage.Priority = MailPriority.Normal;//优先级
            myMessage.From = new MailAddress(from, fromDisplay, Encoding.GetEncoding("gb2312"));
            myMessage.To.Add(sendTo);
            if (cc != "")
            {
                myMessage.CC.Add(cc);
            }
            myMessage.Subject = subject;//邮件主题
            myMessage.SubjectEncoding = Encoding.GetEncoding("gb2312");
            myMessage.IsBodyHtml = true;
            myMessage.BodyEncoding = Encoding.GetEncoding("gb2312");
            myMessage.Body = message;//正文
            myMessage.Attachments.Add(new Attachment(@"C:\Users\lando\Desktop\Flex问题集结号.txt"));//加入附件。。。
            client.Send(myMessage);//开始发送。
            return ret;
        }
    }

页面调用：
SQ.FrameWork.SimpleEmailHelper emailHelper = new SQ.FrameWork.SimpleEmailHelper(stmpServerIpAddress, userId, psw);
emailHelper.Send(from, distEmailAddress, TextBoxTopic.Text.Trim(),TextBoxContent.Text.Trim(),txtCCCleint.Text);
ShowMessage("邮件发送成功。");
需要注意一下的是：
stmpServerIpAddress：是收邮件的服务器地址，比如我用网易的，那么就是 smtp.163.com 等等
userId：你发电子邮件的用户名
psw：你发电子邮件的密码
from：发送人姓名
distEmailAddress：收件人列表，可以有多个，用逗号分隔开来。。都很好理解！~。
二。下载word文档
这个很常用吧，这是我刚刚在给一个实习生改毕业论文的时候，遇到的，所以就记下来了！~以飨园友们哦！~。

protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
    {
        string courseName = ((Label)GridView1.Rows[e.RowIndex].Cells[1].FindControl("Label1")).Text.ToString();//在GridView中文件名字
        string time = ((Label)GridView1.Rows[e.RowIndex].Cells[2].FindControl("Label2")).Text.ToString();//在GridView中找时间
        string tempPath = BusyworkManage.Path + tm.ReturnTeacherID(Request.Cookies["StudentID"].Value.ToString()) +BusyworkManage.TopicPath +
courseName + "/" + courseName + "_" + time + ".doc";//这样做是为了不使下载后的文件的名字重复！~~。
        string path = Server.MapPath(tempPath);
        FileInfo fInfo = new FileInfo(path);
        string fname = fInfo.Name;
        Response.Clear();
        Response.AddHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(fname));
        Response.AddHeader("Content-Length", fInfo.Length.ToString());
        Response.ContentType = "application/octet-stream";
        Response.WriteFile(fInfo.FullName);
        Response.Flush();

首先需要说明的是，在gridview控件中放一个button 按钮，如下：

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" Height="139px"
        Width="100%" OnRowDeleting="GridView1_RowDeleting"
            onselectedindexchanged="GridView1_SelectedIndexChanged">
        <Columns>
　　　　　　　　。。。。。。省略代码。。。。。
            <asp:BoundField DataField="成绩" HeaderText="成绩">
                <ItemStyle HorizontalAlign="Center" />
            </asp:BoundField>
            <asp:CommandField ButtonType="Button" DeleteText="下作业载" ShowDeleteButton="True">
                <ItemStyle HorizontalAlign="Center" />
            </a

补充：Web开发 , ASP.Net ,