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ASP.NET经常用到的二十条语句(荐)

1.//弹出对话框.点击转向指定页面
Response.Write(&quot; <script>window.alert('该会员没有提交申请,请重新提交!')

</script>&quot;);
Response.Write(&quot; <script>window.location

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

2.//弹出对话框
Response.Write(&quot; <script language='javascript'>alert('产品添加成功!')

</script >&quot;);
3.//删除文件
string filename =&quot;20059595157517.jpg&quot;;
pub.util.DeleteFile(HttpContext.Current.Server.MapPath(&quot;../file/&quot;)

+filename);

4.//绑定下拉列表框datalist
System.Data.DataView dv=conn.Exec_ex(&quot;select -1 as code,'请选择经营模式'

as content from dealin union select code,content from dealin&quot;);
this.dealincode.DataSource=dv;
this.dealincode.DataTextField=&quot;content&quot;;
this.dealincode.DataValueField=&quot;code&quot;;
this.dealincode.DataBind();
this.dealincode.Items.FindByValue(dv[0][&quot;dealincode&quot;].ToString

()).Selected=true;

5.//时间去秒显示

<%# System.DateTime.Parse(DataBinder.Eval

(Container.DataItem,&quot;begtime&quot;).ToString()).ToShortDateString()%>

6.//标题带链接

<%# &quot; <a class=\&quot;12c\&quot; target=\&quot;_blank\&quot;

href=\&quot;http://www.51aspx/CV/_&quot;+DataBinder.Eval

(Container.DataItem,&quot;procode&quot;)+&quot;.html\&quot;>&quot;+

DataBinder.Eval(Container.DataItem,&quot;proname&quot;)+&quot; </a>&quot;%>

7.//修改转向

<%# &quot; <A href=\&quot;editpushpro.aspx?id=&quot;+DataBinder.Eval

(Container.DataItem,&quot;code&quot;)+&quot;\&quot;>&quot;+&quot;修改

&quot;+&quot; </A>&quot;%>

8.//弹出确定按钮

<%# &quot; <A id=\&quot;btnDelete\&quot; onclick=\&quot;return confirm('你是否

确定删除这条记录吗?');\&quot; href=\&quot;pushproduct.aspx?

dl=&quot;+DataBinder.Eval(Container.DataItem,&quot;code&quot;)

+&quot;\&quot;>&quot;+&quot;删除&quot;+&quot; </A>&quot;%>

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, &quot;DataItem.PriceMoney&quot;,&quot;{0:F2}

&quot;) %>

10.//提取动态网页内容

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

+1).ToLower().Trim()

12. 打开新的窗口并传送参数:
  传送参数:

response.write(&quot;<script>window.open(’*.aspx?

id=&quot;+this.DropDownList1.SelectIndex+&quot;&amp;id1=&quot;+...+&quot;’)<

/script>&quot;)

接收参数:

string a = Request.QueryString(&quot;id&quot;);
string b = Request.QueryString(&quot;id1&quot;);

12.为按钮添加对话框

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

&quot;);
button.attributes.add(&quot;onclick&quot;,&quot;if(confirm(’are you sure...?

’)){return true;}else{return false;}&quot;)

13.删除表格选定记录

int intEmpID = (int)MyDataGrid.DataKeys[e.Item.ItemIndex];
string deleteCmd = &quot;Delete from Employee where emp_id = &quot; +

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(&quot;onclick&quot;,&quot;return confirm(’

您是否确定要删除这条信息’);&quot;);
  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(&quot;onclick&quot;,&quot;window.open(’

Default.aspx?id=&quot; + e.Item.Cells[0].Text + &quot;’);&quot;);
}

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(&quot;ondblclick&quot;,

&quot;location.href=’../ShippedGrid.aspx?id=&quot; + orderItemID + &quot;’

&quot;);
}

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(&quot;ondblclick&quot;, &quot;open

(’../ShippedGrid.aspx?id=&quot; + orderItemID + &quot;’)&quot;);
}

16.表格超连接列传递参数

<asp:HyperLinkColumn Target=&quot;_blank&quot; headertext=&quot;ID号&quot;

DataTextField=&quot;id&quot; NavigateUrl=&quot;aaa.aspx?id=’
  <%# DataBinder.Eval(Container.DataItem, &quot;数据字段1&quot;)%>’ &amp;

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


17.表格点击改变颜色

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

ListItemType.AlternatingItem)
{
  e.Item.Attributes.Add

(&quot;onclick&quot;,&quot;this.style.backgroundColor=’#99cc00’;
    this.style.color=’buttontext’;this.style.cursor=’default’;&quot;);
}

写在DataGrid的_ItemDataBound里


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

ListItemType.AlternatingItem)
{
e.Item.Attributes.Add

(&quot;onmouseover&quot;,&quot;this.style.backgroundColor=’#99cc00’;
  this.style.color=’buttontext’;this.style.cursor=’default’;&quot;);
e.Item.Attributes.Add(&quot;onmouseout&quot;,&quot;this.style.backgroundColor=

’’;this.style.color=’’;&quot;);
}

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(&quot;MyErrorPage.aspx&quot;);

//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(&quot;UserName&quot;).Expires = 0

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