技術文章[轉載]
傳送參數：
response.write("<script>window.open('*.aspx?id="+this.DropDownList1.SelectIndex+"&id1="+...+"')</script>")
接收參數：
string a? = Request.QueryString("id");
string b? = Request.QueryString("id1");
2.為按鈕添加對話框
Button1.Attributes.Add("onclick","return confirm('確認?')");
button.attributes.add("onclick","if(confirm('are you sure...?')){return true;}else{return false;}")
3.刪除表格選定記錄
int intEmpID = (int)MyDataGrid.DataKeys[e.Item.ItemIndex];
string deleteCmd = "DELETE from Employee where emp_id = " + intEmpID.ToString()
4.刪除表格記錄警告
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('您是否確定要刪除這條信息');");
????break;
??default:
???break;
?}
}
5.點擊表格行鏈接另一頁
private void grdCustomer_ItemDataBound(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
{
//點擊表格打開
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 + "');");
}
雙擊表格連接到另一頁
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 + "'");
}
雙擊表格打開新一頁
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 + "')");
}
★特別注意：【?id=】 處不能為 【?id =】
6.表格超連接列傳遞參數
<asp:HyperLinkColumn Target="_blank"? headertext="ID號" DataTextField="id" NavigateUrl="aaa.aspx?id='<%# DataBinder.Eval(Container.DataItem, "數據字段1")%>'? & name='<%# DataBinder.Eval(Container.DataItem, "數據字段2")%>' />
7.表格點擊改變顏色
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';");
}
寫在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.關于日期格式
日期格式設定
DataFormatString="{0:yyyy-MM-dd}"
我覺得應該在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.獲取錯誤信息并到指定頁面
不要使用Response.Redirect,而應該使用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異常交給ASP.NET自己處理就okay了 :)
}
Redirect會導致post－back的產生從而丟失了錯誤信息，所以頁面導向應該直接在服務器端執行，這樣就可以在錯誤處理頁面得到出錯信息并進行相應的處理
10.清空Cookie
Cookie.Expires=[DateTime];
Response.Cookies("UserName").Expires = 0
11.自定義異常處理
//自定義異常處理類
using System;
using System.Diagnostics;
namespace MyAppException
{
?/// <summary>
?/// 從系統異常類ApplicationException繼承的應用程序異常處理類。
?/// 自動將異常內容記錄到Windows NT/2000的應用程序日志
?/// </summary>
?public class AppException:System.ApplicationException
?{
??public AppException()
??{
???if (ApplicationConfiguration.EventLogEnabled)
????LogEvent("出現一個未知錯誤。");
??}
??public AppException(string message)
??{
???LogEvent(message);
??}
??public AppException(string message,Exception innerException)
??{
???LogEvent(message);
???if (innerException != null)
???{
????LogEvent(innerException.Message);
???}
??}
//日志記錄類
using System;
using System.Configuration;
using System.Diagnostics;
using System.IO;
using System.Text;
using System.Threading;
namespace MyEventLog
{
?/// <summary>
?///???? 事件日志記錄類，提供事件日志記錄支持
?///???? <remarks>
?///???????? 定義了4個日志記錄方法 (error, warning, info, trace)
?///???? </remarks>
?/// </summary>
?public class ApplicationLog
?{
??? ?/// <summary>
??///???? 將錯誤信息記錄到Win2000/NT事件日志中
??///???? <param name="message">需要記錄的文本信息</param>
??/// </summary>
??public static void WriteError(String message)
??{
?
???WriteLog(TraceLevel.Error, message);
??}
???????
??/// <summary>
??///???? 將警告信息記錄到Win2000/NT事件日志中
??///???? <param name="message">需要記錄的文本信息</param>
??/// </summary>
??public static void WriteWarning(String message)
??{
?
???WriteLog(TraceLevel.Warning, message);
??}
???????
??/// <summary>
??///???? 將提示信息記錄到Win2000/NT事件日志中
??///???? <param name="message">需要記錄的文本信息</param>
??/// </summary>
??public static void WriteInfo(String message)
??{
???WriteLog(TraceLevel.Info, message);
??}
??/// <summary>
??///???? 將跟蹤信息記錄到Win2000/NT事件日志中
??///???? <param name="message">需要記錄的文本信息</param>
??/// </summary>
??public static void WriteTrace(String message)
??{
???
???WriteLog(TraceLevel.Verbose, message);
??}
???????
??/// <summary>
??///??? 格式化記錄到事件日志的文本信息格式
??///???? <param name="ex">需要格式化的異常對象</param>
??///???? <param name="catchInfo">異常信息標題字符串.</param>
??///???? <retvalue>
??///???????? <para>格式后的異常信息字符串，包括異常內容和跟蹤堆棧.</para>
??///???? </retvalue>
??/// </summary>
??public static String FormatException(Exception ex, String catchInfo)
??{
???StringBuilder strBuilder = new StringBuilder();
???if (catchInfo != String.Empty)
???{
????strBuilder.Append(catchInfo).Append("\r\n");
???}
???strBuilder.Append(ex.Message).Append("\r\n").Append(ex.StackTrace);
???return strBuilder.ToString();
??}
??/// <summary>
??///???? 實際事件日志寫入方法
??///???? <param name="level">要記錄信息的級別（error,warning,info,trace).</param>
??///???? <param name="messageText">要記錄的文本.</param>
??/// </summary>
??private static void WriteLog(TraceLevel level, String messageText)
??{
???
???try
???{??
????EventLogEntryType LogEntryType;
????switch (level)
????{
?????case TraceLevel.Error:
??????LogEntryType = EventLogEntryType.Error;
??????break;
?????case TraceLevel.Warning:
??????LogEntryType = EventLogEntryType.Warning;
??????break;
?????case TraceLevel.Info:
??????LogEntryType = EventLogEntryType.Information;
??????break;
?????case TraceLevel.Verbose:
??????LogEntryType = EventLogEntryType.SuccessAudit;
??????break;
?????default:
??????LogEntryType = EventLogEntryType.SuccessAudit;
??????break;
????}
???
????EventLog eventLog = new EventLog("Application", ApplicationConfiguration.EventLogMachineName, ????????ApplicationConfiguration.EventLogSourceName );
????//寫入事件日志
????eventLog.WriteEntry(messageText, LogEntryType);
???
???}
???catch {} //忽略任何異常
??}???
?} //class ApplicationLog
}
12.Panel 橫向滾動，縱向自動擴展
?<asp:panel? style="overflow-x:scroll;overflow-y:auto;"></asp:panel>
13.回車轉換成Tab
<script language="javascript" for="document" event="onkeydown">
if(event.keyCode==13 && event.srcElement.type!='button' && event.srcElement.type!='submit' && event.srcElement.type!='reset' && event.srcElement.type!=''&& event.srcElement.type!='textarea');
event.keyCode=9;
</script>
οnkeydοwn="if(event.keyCode==13) event.keyCode=9"
http://dotnet.aspx.cc/exam/enter2tab.aspx
14.DataGrid超級連接列
DataNavigateUrlField="字段名" DataNavigateUrlFormatString="http://xx/inc/delete.aspx?ID={0}"
15.DataGrid行隨鼠標變色
?private void DGzf_ItemDataBound(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
??{
???if (e.Item.ItemType!=ListItemType.Header)
???{
????e.Item.Attributes.Add( "onmouseout","this.style.backgroundColor=\""+e.Item.Style["BACKGROUND-COLOR"]+"\"");
????e.Item.Attributes.Add( "onmouseover","this.style.backgroundColor=\""+ "#EFF3F7"+"\"");
???}
??
??}
16.模板列
?<ASP:TEMPLATECOLUMN visible="False" sortexpression="demo" headertext="ID">
?<ITEMTEMPLATE>
??<ASP:LABEL text='<%# DataBinder.Eval(Container.DataItem, "ArticleID")%>' runat="server" width="80%" id="lblColumn" />
?</ITEMTEMPLATE>
?</ASP:TEMPLATECOLUMN>
<ASP:TEMPLATECOLUMN headertext="選中">
?<HEADERSTYLE wrap="False" horizontalalign="Center"></HEADERSTYLE>
?<ITEMTEMPLATE>
??<ASP:CHECKBOX id="chkExport" runat="server" />
?</ITEMTEMPLATE>
?<EDITITEMTEMPLATE>
?<ASP:CHECKBOX id="chkExportON" runat="server" enabled="true" />
?</EDITITEMTEMPLATE>
</ASP:TEMPLATECOLUMN>
后臺代碼
protected void CheckAll_CheckedChanged(object sender, System.EventArgs e)
??{
???//改變列的選定，實現全選或全不選。
???CheckBox chkExport ;
???if( CheckAll.Checked)
???{
????foreach(DataGridItem oDataGridItem in MyDataGrid.Items)
????{
?????chkExport = (CheckBox)oDataGridItem.FindControl("chkExport");
?????chkExport.Checked = true;
????}
???}
???else
???{
????foreach(DataGridItem oDataGridItem in MyDataGrid.Items)
????{
?????chkExport = (CheckBox)oDataGridItem.FindControl("chkExport");
?????chkExport.Checked = false;
????}
???}
??}
17.數字格式化
【<%#Container.DataItem("price")%>的結果是500.0000，怎樣格式化為500.00?】
<%#Container.DataItem("price","{0:￥#,##0.00}")%>
int i=123456;
string s=i.ToString("###,###.00");
18.日期格式化
【aspx頁面內：<%# DataBinder.Eval(Container.DataItem,"Company_Ureg_Date")%>
?顯示為： 2004-8-11 19:44:28
?我只想要：2004-8-11 】
<%# DataBinder.Eval(Container.DataItem,"Company_Ureg_Date","{0:yyyy-M-d}")%>
應該如何改？
【格式化日期】
取出來,一般是object
((DateTime)objectFromDB).ToString("yyyy-MM-dd");
【日期的驗證表達式】
A.以下正確的輸入格式： [2004-2-29], [2004-02-29 10:29:39 pm], [2004/12/31]?
^((\d{2}(([02468][048])|([13579][26]))[\-\/\s]?((((0?[13578])|(1[02]))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\-\/\s]?((0?[1-9])|([1-2][0-9])))))|(\d{2}(([02468][1235679])|([13579][01345789]))[\-\/\s]?((((0?[13578])|(1[02]))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))[\-\/\s]?((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\-\/\s]?((0?[1-9])|(1[0-9])|(2[0-8]))))))(\s(((0?[1-9])|(1[0-2]))\:([0-5][0-9])((\s)|(\:([0-5][0-9])\s))([AM|PM|am|pm]{2,2})))?$
B.以下正確的輸入格式：[0001-12-31], [9999 09 30], [2002/03/03]?
^\d{4}[\-\/\s]?((((0[13578])|(1[02]))[\-\/\s]?(([0-2][0-9])|(3[01])))|(((0[469])|(11))[\-\/\s]?(([0-2][0-9])|(30)))|(02[\-\/\s]?[0-2][0-9]))$
【大小寫轉換】
HttpUtility.HtmlEncode(string);
HttpUtility.HtmlDecode(string)
19.如何設定全局變量
Global.asax中
Application_Start()事件中
添加Application[屬性名] ＝ xxx;
就是你的全局變量
20.怎樣作到HyperLinkColumn生成的連接后，點擊連接，打開新窗口？
HyperLinkColumn有個屬性Target,將器值設置成"_blank"即可.(Target="_blank")
【ASPNETMENU】點擊菜單項彈出新窗口
在你的menuData.xml文件的菜單項中加入URLTarget="_blank"
如：
<?xml version="1.0" encoding="GB2312"?>
<MenuData ImagesBaseURL="images/">
? <MenuGroup>
??? <MenuItem Label="內參信息" URL="Infomation.aspx" >
????? <MenuGroup ID="BBC">
??????? <MenuItem Label="公告信息"?? URL="Infomation.aspx" URLTarget="_blank"? LeftIcon="file.gif"/>
??????? <MenuItem Label="編制信息簡報" URL="NewInfo.aspx" LeftIcon="file.gif" />
......
最好將你的aspnetmenu升級到1.2版
21.委托討論
http://community.csdn.net/Expert/topic/2651/2651579.xml?temp=.7183191
http://dev.csdn.net/develop/article/22/22951.shtm
22.讀取DataGrid控件TextBox值
foreach(DataGrid dgi in yourDataGrid.Items)
{
??? TextBox tb = (TextBox)dgi.FindControl("yourTextBoxId");
??? tb.Text....
}
23.在DataGrid中有3個模板列包含Textbox分別為 DG_ShuLiang (數量) DG_DanJian(單價) DG_JinE(金額)分別在5.6.7列，要求在錄入數量及單價的時候自動算出金額即:數量*單價=金額還要求錄入時限制為 數值型.我如何用客戶端腳本實現這個功能?
〖思歸〗
?? <asp:TemplateColumn HeaderText="數量">
??<ItemTemplate>
???<asp:TextBox id="ShuLiang" runat='server' Text='<%# DataBinder.Eval(Container.DataItem,"DG_ShuLiang")%>'?
????οnkeyup="javascript:DoCal()"
???/>
???<asp:RegularExpressionValidator id="revS" runat="server" ControlToValidate="ShuLiang" ErrorMessage="must be integer" ValidationExpression="^\d+$" />
??</ItemTemplate>
????? </asp:TemplateColumn>
????? <asp:TemplateColumn HeaderText="單價">
??<ItemTemplate>
???<asp:TextBox id="DanJian" runat='server' Text='<%# DataBinder.Eval(Container.DataItem,"DG_DanJian")%>'
????οnkeyup="javascript:DoCal()"
???/>
??<asp:RegularExpressionValidator id="revS2" runat="server" ControlToValidate="DanJian" ErrorMessage="must be numeric" ValidationExpression="^\d+(\.\d*)?$" />
??</ItemTemplate>
????? </asp:TemplateColumn>
???? <asp:TemplateColumn HeaderText="金額">
??<ItemTemplate>
???<asp:TextBox id="JinE" runat='server' Text='<%# DataBinder.Eval(Container.DataItem,"DG_JinE")%>' />
??</ItemTemplate>
????? </asp:TemplateColumn>
<script language="javascript">
function DoCal()
{
? var e = event.srcElement;
? var row = e.parentNode.parentNode;
? var txts = row.all.tags("INPUT");
? if (!txts.length || txts.length < 3)
?return;
?
? var q = txts[txts.length-3].value;
? var p = txts[txts.length-2].value;
? if (isNaN(q) || isNaN(p))
?return;
? q = parseInt(q);
? p = parseFloat(p);
? txts[txts.length-1].value = (q * p).toFixed(2);
}
</script>
24.datagrid選定比較底下的行時，為什么總是刷新一下，然后就滾動到了最上面，剛才選定的行因屏幕的關系就看不到了
page_load
page.smartNavigation=true
25.在Datagrid中修改數據，當點擊編輯鍵時，數據出現在文本框中，怎么控制文本框的大小 ?
private void DataGrid1_ItemDataBound(obj sender,DataGridItemEventArgs e)
{
?????? for(int i=0;i<e.Item.Cells.Count-1;i++)
????????? if(e.Item.ItemType==ListItemType.EditType)
?????????? {
????????????????? e.Item.Cells[i].Attributes.Add("Width", "80px")
??????????? }??
}
26.對話框
private static string ScriptBegin = "<script language=\"JavaScript\">";
private static string ScriptEnd = "</script>";
public static void ConfirmMessageBox(string PageTarget,string Content)
??{
???string ConfirmContent="var retValue=window.confirm('"+Content+"');"+"if(retValue){window.location='"+PageTarget+"';}";
???
???ConfirmContent=ScriptBegin + ConfirmContent + ScriptEnd;
???
???Page ParameterPage = (Page)System.Web.HttpContext.Current.Handler;
???ParameterPage.RegisterStartupScript("confirm",ConfirmContent);
???//Response.Write(strScript);
??
轉載于:https://www.cnblogs.com/Nina-piaoye/archive/2006/12/21/598816.html
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