ASP.NET程序中常用代码汇总(一)
ASP.NET程序中常用代码汇总(一) 1. 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');2.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;}')3.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()4.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;
}}5.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 + '’)');}★特别注意:【?id=】 处不能为 【?id =】6.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')%>’ />7.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=’’;');}8.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'))9.获取错误信息并到指定页面//不要使用Response.Redirect,而应该使用Server.Transfere.g// in global.asaxprotected 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 10.清空Cookie Cookie.Expires=[DateTime];Response.Cookies('UserName').Expires = 0