一些使用技巧

1,在DataGrid中顯示圖片
                
       

2,發送郵件
<%@ Import Namespace="System.Web.Mail" %>
 public void Mail_Send(object sender, EventArgs e)
    {
   
        MailMessage MyMsg = new MailMessage();
        MyMsg.From = "";
        MyMsg.To = "";
        MyMsg.Subject = "test";
        MyMsg.Body = "test ";
        MyMsg.BodyFormat = MailFormat.Html;
        try
        {
            SmtpMail.Send(MyMsg);
            Response.Write("發送成功");
           
        }
        catch
        {
            Response.Write("發送失敗");
        }
    }

3,在DataGrid里的自動排序
 protected void dgFunc_ItemDataBound(object sender, DataGridItemEventArgs e)
    {
        string strID = Convert.ToString(e.Item.ItemIndex + 1);
        if (strID == "0")
        {
        }
        else
        {
            e.Item.Cells[0].Text = strID;
        }
    }

3,DropDownList綁定兩個字段
select a + b as c from table
DropDownList.DataTextField = "c";

4,DropDownList綁定
 ListItem li;
        li = ddlDeptEnt.Items.FindByValue("1005");
        if (li != null)
            li.Selected = true;

5，CheckBoxList綁定

for(int j=0;j{
      if(temp.IndexOf(Checkboxlist1.Items[j].Value)!=-1)
    Checkboxlist1.Items[j].Selected=true;
}

6，這個方法沒用過不知道干什么的
if (dt.Rows.Count > 0)
        {
            for (int i = 0; i < dt.Rows.Count; i++)
            {
                ListItem li = CheckBoxList1.Items.FindByValue(dt.Rows[i]["blogmenuid"].ToString());
                if (li != null)
                  li.Selected = true;
              }
      }