asp tips

网络命令：netstat -a-n

1。在gridview里面选中删除一行。

在GridView中添加一个模板列：LinkButton.设置CommandName="Delete"，OnClientClick="return confirm('确认要删除吗？');"

Html代码如下：

<asp:TemplateField HeaderText="删除">
                                <ItemTemplate>
                                    <asp:LinkButton ID="LinkButton1" runat="server"　CommandName="Delete" OnClientClick="return confirm('确认要删除吗？');">删除</asp:LinkButton>
                                </ItemTemplate>
                            </asp:TemplateField>

然后把删除代码写在RowDeleting事件中：

protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
    {
        int j = Convert.ToInt32(GridView1.DataKeys[e.RowIndex].Value);
        addb.DeleteADType(j);
        GridView1.DataSource = addb.GetAdType().Tables[0];
        GridView1.DataBind();
    }

2.连接数据库：

SqlConnection sqlconn = new SqlConnection(ConfigurationSettings.AppSettings["connStringSelina"]);

3。datalist中的数据绑定.

4.datalist中的传值绑定。

5.页面之间传值：

string url;

url = "AddCardOK.aspx?OpenName=" + TxtOpenName.Text + "&kaihao=" + Txtcard.Text + "&cardType=" + DrLType.SelectedValue.ToString() + "&UsePid=" + TxtPid.Text + "&times=" + Txt_time.Value.ToString() + "&CardInperson=" + TxtInName.Text + "&IsOpen=" + DropDownList1.SelectedValue.ToString();

Response.Redirect(url);

B页面中：label.text=request.querystring["变量名"]

6. 给一个提示：

Response.Write("<script>alert('修改成功!'); </script>");

7.让gridview 一行不可见;

e.Row.Cells[5].Attributes.Add("style", "display:none");

8.显示客户端IP地址

this.Label1.Text = "客户端IP地址"+Request.UserHostAddress;

9.调用用户控件

<%@ Register TagPrefix="uc1" TagName="Header1" Src="~/Controls/top.ascx" %>

10．调用CSS

</head>

11执行存储过程

SqlConnection con = new SqlConnection(DB.GetConStr());

con.Open();

SqlCommand com = new SqlCommand("存储过程名称",con);

com.CommandType = CommandType.StoredProcedure;

SqlParameter sp = new SqlParameter("存储过程参数",SqlDbType.VarChar,50);

sp.Value = userName.Text;

com.Parameters.Add(sp);

com.ExecuteNonQuery();

12.不成功，反加上一个步骤：

if (count > 0)

{

Response.Write("<script> alert('该用户名

已存在！);location='javascript:history.go(-1)'</script>");

}

13．鼠标放到上面变色。双击打开页面。点击删除一行.

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)

{

if (e.Row.RowType == DataControlRowType.DataRow)

{

e.Row.Attributes.Add("onmouseover", "this.style.backgroundColor='#E0E0E0';this.style.color='buttontext';this.style.cursor='default';");

e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor='#EFF3FB'");

e.Row.Attributes.Add("ondblclick", "window.open('a.aspx?id=" + e.Row.Cells[1].Text + "')"); //双击打开页面

((LinkButton)e.Row.Cells[0].Controls[0]).Attributes.Add("onclick", "return confirm('确定删除?')");

}

14.判断用户类型，查询所需的用户：

public DataSet GetUserList(string GetType)

{

string selectString;

selectString = "select u.UserID,u.UserName,u.UserEmail,u.TrueName,u.RegDate,u.LoginNum,u.LastLogin,t.Type from bbc_user as u inner join bbc_user_type as t on u.UserClass=t.ID";

switch (GetType)

{

case null:

selectString += "";

break;

case "commonuser":

selectString += " where u.UserClass=1";

break;

case "gmuser":

selectString += " where u.UserClass=2";

break;

case "CXTuser":

selectString += " where u.UserClass=3";

break;

case "Login24h":

selectString += " where u.LastLogin > '" + DateTime.Now.AddDays(-1).ToString() + "'";

break;

case "Reg24h":

selectString += " where u.RegDate >'" + DateTime.Now.AddDays(-1).ToString() + "'";

break;

case "LockUser":

selectString += " where u.LockUser=1";

break;

}

selectString += " Order By u.UserID DESC";

db.DBOpen();

DataSet ds = db.FillDataSet(selectString);

db.DBClose();

return ds;

}

15．Gridview 里自定义分页：

<PagerSettings FirstPageText="首页" LastPageText="末页" Mode="NextPreviousFirstLast"

NextPageText="下一页" PreviousPageText="上一页" />

protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)

{

GridView1.PageIndex = e.NewPageIndex;

this.GridView1.DataBind();

}

16．Gridview 里设定他的的样式：

17．GridView基本的操作 编辑更新取消

public partial class GridView_GridView_DeleteUpdate1 : System.Web.UI.Page
{
    Practice.DAL.authors authorsbll = new Practice.DAL.authors();

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            DataBindGridView();
        }
        GridView1.RowDeleting += new GridViewDeleteEventHandler(GridView1_RowDeleting);
        GridView1.RowEditing += new GridViewEditEventHandler(GridView1_RowEditing);
        GridView1.RowCancelingEdit += new GridViewCancelEditEventHandler(GridView1_RowCancelingEdit);
        GridView1.RowUpdating += new GridViewUpdateEventHandler(GridView1_RowUpdating);
    }

    /// <summary>
    /// 功    能：GridView删除事件
    /// 作　　者：PUKE
    /// 完成时间：2007-05-18
    /// 版　　权：pukesys@tom.com
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
    {
        string id = GridView1.Rows[e.RowIndex].Cells[0].Text.Trim();

        authorsbll.Delete(id);//删除，函数自己写

        DataBindGridView();//重新绑定数据源
    }

    /// <summary>
    /// 功    能：GridView编辑事件
    /// 作　　者：PUKE
    /// 完成时间：2007-05-18
    /// 版　　权：pukesys@tom.com
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
    {
        GridView1.EditIndex = e.NewEditIndex;
        DataBindGridView();
    }

    /// <summary>
    /// 功    能：GridView取消事件
    /// 作　　者：PUKE
    /// 完成时间：2007-05-18
    /// 版　　权：pukesys@tom.com
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
    {
        GridView1.EditIndex = -1;
        DataBindGridView();
    }

    /// <summary>
    /// 功    能：GridView更新事件
    /// 作　　者：PUKE
    /// 完成时间：2007-05-18
    /// 版　　权：pukesys@tom.com
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
    {
        string aa = (((TextBox)(GridView1.Rows[e.RowIndex].Cells[0].Controls[0])).Text.ToString().Trim());
        GridView1.EditIndex = -1;
        DataBindGridView();
    }

    /// <summary>
    /// 功    能：绑定GridView
    /// 作　　者：PUKE
    /// 完成时间：2007-05-18
    /// 版　　权：pukesys@tom.com
    /// </summary>
    private void DataBindGridView()
    {
        DataSet ds = authorsbll.GetList("");
        GridView1.DataSource = ds;
        GridView1.DataBind();
    }
}

18.判断ＤataSet 里的记录集是否为空

if (myDataSet == null || myDataSet.Tables[0].Rows.Count == 0)
{
//为空时进行处理
}
else
{
//不为空时处理
}

19.选中日期：

protected void Calendar1_SelectionChanged(object sender, EventArgs e)

{

Response.Write(string.Format("选中的日期为{0}",Calendar1.SelectedDates[0].ToString("yyyy-MM-dd")));

}

20. Literal和Label到底有什么区别,

其实它们也只有一个区别,就是在转换成客户端Html代码后,Label就成了<span></span>,而Literal则是什么标记都不带

21.新建VS2005的调式根目录

1.工具---> 外部工具----->添加

2.命令:C:"WINDOWS"Microsoft.NET"Framework"v2.0.50727"WebDev.WebServer.EXE

3.参数:/port:8080 /path:$(ProjectDir):

22.{0} {1} 等来接收参数.

public void UpdateAdminLoginLog(string FromIp, int AdminId)

{

db.DBOpen();

string strSQL = string.Format("update bbc_admin set LastLogin='{0}' , LastLoginIP='{1}' , loginnum=loginnum+1 where adminID={2}", DateTime.Now, FromIp, AdminId);

db.Execute(strSQL);

db.DBClose();

}

23.信息存入cookies

HttpCookie cookie = new HttpCookie["名称"];

cookie.Values.Add("webmaster","飞刀");
cookie.Values.Add("writer","beige");
cookie.Values.Add("LinkColor","blue");

24.读取cookies:

HttpCookie cookie = Request.Cookies["名称"];
value1 = cookies.Values["webmaster"];
value2 = cookies.Values["writer"];

25. 上传图片

protected void btnUpload_Click(object sender, EventArgs e)

{

//上传文件

if (IsPostBack)

{

Boolean fileOK = false;

String Path = Server.MapPath("~/UploadFiles/");

String fileExtension = null;

if (FileUpload1.HasFile)

{

fileExtension = System.IO.Path .GetExtension(FileUpload1.FileName).ToLower();

String[] allowExtension = { ".jpg", ".jpeg", ".gif", ".png" };

for (int i = 0; i < allowExtension.Length; i++)

{

if (fileExtension == allowExtension[i])

{

fileOK = true;

}

if (fileOK)

{

try

{

String newfilename = Path + new PubFun().CreateRandomString() + fileExtension;

FileUpload1.PostedFile.SaveAs(newfilename);

tbphoto.Text = "/UploadFiles/" + newfilename.Replace(Path, null);

}

catch (Exception ex)

{

tbphoto.Text = "文件上传出现错误，请检查重试";

Response.Write(ex);

}

else

{

tbphoto.Text = "此类文件不允许上传";

}

26 request.params

request.params其实是一个集合，它依次包括request.querystring、request.form、request.cookies和request.servervariables

26.ViewState

简而言之,ViewState是保存跨页面生命周期有关变量的最好容器,但它又不能够跨出页面范围真正符合其名称用来保存View的State的。例如有GridA和GridB两个页面，点击一个条目查看明细都回转到Details页面，同时Details页面要提供返回原来页面的途径

27. DataFormatString="{0:格式字符串}"

28.巧妙的利用sql语句

select MID,case when MType='1' then '咨询' when MType='2' then '建议' else '投诉' end as MType,Inputer,Title,MContent,IsChecked,CreateTime,case when status='1' then '处理中...' when status='0' then '未处理' else '已处理' end as status from UMsg order by CreateTime ASC

28. 角本

oldDiv=null;

function DivState(DivID){

if(oldDiv!=null){

oldDiv.style.display='none';

}

var IDiv=document.getElementById("Div"+DivID);

IDiv.style.display='';

readed (DivID);

DivOld("Div"+DivID);

top.leftFrame.location.reload();

}

function DivOld(oldID){

oldDiv=document.getElementById(oldID);

}

function readed (ID){ //返回问题

var ajax=new AJAXRequest;

var d = new Date();

ajax.post(

"sysreaded.aspx?d="+d.getTime(),

"NID="+ID,

function(obj) {return obj.responseText;}

);

}

</script>

29. 刷新:

Response.Write("<script language=javascript>window.location.href=window.location.href;</script>");

30.单链接!

NavigateUrl ='<%# DataBinder.Eval(Container.DataItem,"GoodsID","productInfo.aspx?action={0})%>'/>

30. 捕获异常.并输出:

   catch(Exception    ex)
   {
   HttpContext.Current.Response.Write(ex.Message);

31. 安装asp.net2.0框架

C:/WINDOWS/Microsoft.NET/Framework/v2.0.50727/aspnet_regiis.exe -i

32.当连接sql server使用信任连接时就会出这个错误，在Windows XP当中，ASP.NET的运行帐号是ASPNET，而在Windows server 2003当中，运行帐号则改为了Network Service

33.一个网站的分网站的创建.

IIS里面在你的那个项目的文件夹上面右键属性里面
目录选项下面的
应用程序名后面点击创建即可！

posted on 2008-04-01 12:09 lby 阅读(321) 评论(0) 编辑收藏引用

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