ASP.NET常用语句
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.newasp.net/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,begtime).ToString()).ToShortDateString()%>
6.//标题带链接
<%# <a class=\12c\ target=\_blank\href=\http://www.newasp.net/CV/_DataBinder.Eval
(Container.DataItem,procode)+.html \>
DataBinder.Eval(Container.DataItem,proname") </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.newasp.net/);
WebRequest req = WebRequest.Create(uri);
WebResponse resp = req.GetResponse();
Stream str = resp.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(’*.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
e.g
// 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post－back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
