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ASP.NET常用语句1--20条

2011-08-19 17:34 465 查看
ASP.NET常用语句1--20条,转载整理:

1.弹出对话框.点击转向指定页面

Response.Write(" <script>window.alert('该会员没有提交申请,请重新提交!')

</script>");

Response.Write(" <script>window.location

='http://www.51aspx.com/bizpulic/upmeb.aspx' </script>");

2.弹出对话框

Response.Write(" <script language='javascript'>alert('产品添加成功!')

</script >");

3.删除文件

string filename ="20059595157517.jpg";

pub.util.DeleteFile(HttpContext.Current.Server.MapPath("../file/")

+filename);

4.绑定下拉列表框datalist

System.Data.DataView dv=conn.Exec_ex("select -1 as code,'请选择经营模式'

as content from dealin union select code,content from dealin");

this.dealincode.DataSource=dv;

this.dealincode.DataTextField="content";

this.dealincode.DataValueField="code";

this.dealincode.DataBind();

this.dealincode.Items.FindByValue(dv[0]["dealincode"].ToString()).Selected=true;

5.时间去秒显示

<%# System.DateTime.Parse(DataBinder.Eval(Container.DataItem,"beginTime").ToString()).ToShortDateString()%>

6.标题带链接

<%# " <a class=\"12c\" target=\"_blank\"

href=\"http://www.51aspx/CV/_"+DataBinder.Eval

(Container.DataItem,"procode")+".html\">"+

DataBinder.Eval(Container.DataItem,"proname")+" </a>"%>



例:

<a href="test.aspx?id='<%# DataBinder.Eval(Container.DataItem,'TestId')'" target='_blank'>修改记录</a>

7.修改转向

<%# "<a href=\"editpushpro.aspx?id="+DataBinder.Eval(Container.DataItem,"code")+"\">"+"修改"+" </a>"%>

8.弹出确定按钮

<%# "<a id=\"btnDelete\" onclick=\"return confirm('你是否确定删除这条记录吗?');\" href=\"pushproduct.aspx?

dl="+DataBinder.Eval(Container.DataItem,"code") +"\">"+"删除"+" </a>"%>

9.输出数据格式化 "{0:F2}" 是格式 F2表示小数点后剩两位

<%# DataBinder.Eval(Container, "DataItem.PriceMoney","{0:F2}") %>

10.提取动态网页内容

Uri uri = new Uri("http://www.51aspx.com/");

WebRequest request = WebRequest.Create(uri);

WebResponse response = request.GetResponse();

Stream str = rresponse.GetResponseStream();

StreamReader sr = new StreamReader(str,System.Text.Encoding.Default);

string t = sr.ReadToEnd();

this.Response.Write(t.ToString());

11.获取"."后面的字符

i.ToString().Trim().Substring(i.ToString().Trim().LastIndexOf(".") +1).ToLower().Trim()

12. 打开新的窗口并传送参数:

传送参数:

Response.Write("<script>window.open(’abc.aspx?id="+this.DropDownList1.SelectIndex+"&id1="+...+"’)</script>")

接收参数:

string a = Request.QueryString("id");

string b = Request.QueryString("id1");

12.为按钮添加对话框

Button1.Attributes.Add("onclick","return confirm(’确认?’)");

button.attributes.add("onclick","if(confirm(’are you sure...?’)){return true;}else{return false;}")

13.删除表格选定记录

int intEmpID = (int)MyDataGrid.DataKeys[e.Item.ItemIndex];

string deleteCmd = "Delete from Employee where emp_id = " + intEmpID.ToString();

14.删除表格记录警告

private void DataGrid_ItemCreated(Object sender,DataGridItemEventArgs e)

{

  switch(e.Item.ItemType)

  {

  case ListItemType.Item :

  case ListItemType.AlternatingItem :

  case ListItemType.EditItem:

  TableCell myTableCell;

  myTableCell = e.Item.Cells[14];

  LinkButton myDeleteButton;

  myDeleteButton = (LinkButton)myTableCell.Controls[0];

  myDeleteButton.Attributes.Add("onclick","return confirm(’您是否确定要删除这条信息’);");

  break;

  default:

  break;

  }

}

15.点击表格行链接另一页

private void grdCustomer_ItemDataBound(object sender,

System.Web.UI.WebControls.DataGridItemEventArgs e)

{

  //点击表格打开

  if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)

   e.Item.Attributes.Add("onclick","window.open(’Default.aspx?id=" + e.Item.Cells[0].Text + "’);");

}

双击表格连接到另一页

  在itemDataBind事件中

if(e.Item.ItemType == ListItemType.Item || e.Item.ItemType ==

ListItemType.AlternatingItem)

{

  string orderItemID =e.item.cells[1].Text;

  e.item.Attributes.Add("ondblclick",

"location.href=’../ShippedGrid.aspx?id=" + orderItemID + "’

");

}

双击表格打开新一页

if(e.Item.ItemType == ListItemType.Item || e.Item.ItemType ==

ListItemType.AlternatingItem)

{

  string orderItemID =e.item.cells[1].Text;

  e.item.Attributes.Add("ondblclick", "open

(’../ShippedGrid.aspx?id=" + orderItemID + "’)");

}

16.表格超连接列传递参数

<asp:HyperLinkColumn Target="_blank" headertext="ID号"

DataTextField="id" NavigateUrl="aaa.aspx?id=’

  <%# DataBinder.Eval(Container.DataItem, "数据字段1")%>’ &

name=’<%# DataBinder.Eval(Container.DataItem, "数据字段2")%>’ /

>

17.表格点击改变颜色

if (e.Item.ItemType == ListItemType.Item ||e.Item.ItemType ==

ListItemType.AlternatingItem)

{

  e.Item.Attributes.Add

("onclick","this.style.backgroundColor=’#99cc00’;

    this.style.color=’buttontext’;this.style.cursor=’default’;");

}

写在DataGrid的_ItemDataBound里

if (e.Item.ItemType == ListItemType.Item ||e.Item.ItemType ==

ListItemType.AlternatingItem)

{

e.Item.Attributes.Add

("onmouseover","this.style.backgroundColor=’#99cc00’;

  this.style.color=’buttontext’;this.style.cursor=’default’;");

e.Item.Attributes.Add("onmouseout","this.style.backgroundColor=

’’;this.style.color=’’;");

}

18.关于日期格式

  日期格式设定 DataFormatString="{0:yyyy-MM-dd}"

  我觉得应该在itembound事件中 e.items.cell["你的列"].text=DateTime.Parse(e.items.cell["你的列"].text.ToString("yyyy-MM-dd"))

19.获取错误信息并到指定页面

不要使用Response.Redirect,而应该使用Server.Transfer

例:

// in global.asax

protected void Application_Error(Object sender, EventArgs e) {

if (Server.GetLastError() is HttpUnhandledException)

Server.Transfer("MyErrorPage.aspx");

//其余的非HttpUnhandledException异常交给ASP.NET自己处理就okay了 :)

}

  

Redirect会导致postback的产生从而丢失了错误信息,所以页面导向应该直接在服务器端执行,这样就可以在错误处理页面得到出错信息并进行相应的处理

20.清空Cookie

Cookie.Expires=[DateTime];

Response.Cookies("UserName").Expires = 0
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