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Asp.net常用的51个代码(非常实用)

2015-06-28 00:00作者:网管联盟

  1.弹出对话框.点击转向指定页面

  Code:

  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.itmop.com/'</script>&);

  2.弹出对话框

  Code:

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

  3.删除文件

  Code:

  string filename =&20059595157517.jpg&;

  pub.util.DeleteFile(HttpContext.Current.Server.MapPath(&../file/&)+filename);

  4.绑定下拉列表框datalist

  Code:

  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

  Code:

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

  6.标题带链接

  Code:

  <%# &<a class=&12c& target=&_blank& href=&http://www.51aspx/CV/_&+DataBinder.Eval(Container.DataItem,&procode&)+&.html&>&+ DataBinder.Eval(Container.DataItem,&proname&)+&</a>&%>

  7.修改转向

  Code:

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

  8.弹出确定按钮

  Code:

  <%# &<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

  Code:

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

  10.提取动态网页内容

  Code:

  Uri uri = new Uri(&http://www.itmop.com/&);

  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

  Code:

  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:

  Code:

  response.write(&<script>window.open(’*.aspx?id=&+this.DropDownList1.SelectIndex+&&id1=&+...+&’)</script>&)

  接收参数:

  Code:

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

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

  12.为按钮添加对话框

  Code:

  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

  Code:

  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

  Code:

  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

  Code:

  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

  Code:

  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

  Code:

  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

  Code:

  <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

  Code:

  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

  Code:

  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

  Code:

  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&))

  Code:

  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

  Code:

  // in global.asax

  protected void Application_Error(Object sender, EventArgs e) {

  if (Server.GetLastError() is HttpUnhandledException)

  Server.Tra

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