.NET中常用的代码(转载)
2007-02-06 12:46 Koy 阅读(428) 评论(0) 编辑 收藏 举报.NET中常用的代码
整理了一些常用的.NET代码,贴出来供大家参考,并希望我们一起搜集更多的内容。
一、为GridView添加索引列
<asp:TemplateField HeaderText="ID">
<ItemTemplate>
<%# Container.DataItemIndex +1 %>
</ItemTemplate>
</asp:TemplateField>
二、批量删除列
模板列代码:
<asp:TemplateField HeaderText="选择">
<ItemTemplate>
<asp:CheckBox ID="chkSelect" runat="server" />
</ItemTemplate>
</asp:TemplateField>
全选:
for (int i = 0; i < gv.Rows.Count; i++)
{
CheckBox chkSelect = (CheckBox)gv.Rows[i].FindControl("chkSelect");
chkSelect.Checked = true;
}
反选:
for (int i = 0; i < gv.Rows.Count; i++)
{
CheckBox chkSelect = (CheckBox)gv.Rows[i].FindControl("chkSelect");
chkSelect.Checked = !chkSelect.Checked;
}
取消选择:
for (int i = 0; i < gv.Rows.Count; i++)
{
CheckBox chkSelect = (CheckBox)gv.Rows[i].FindControl("chkSelect");
chkSelect.Checked = false;
}
删除:
for (int i = 0; i < gv.Rows.Count; i++)
{
CheckBox chkSelect = (CheckBox)gv.Rows[i].FindControl("chkSelect");
if (chkSelect.Checked)
{
//删除记录
}
}
三、删除表格选定记录
int id = (int)MyDataGrid.DataKeys[e.Item.ItemIndex]; //在调用前必须指定DataKeyNames属性为要获取
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
的主键。
string deleteCmd = "DELETE from Employee where emp_id = " + intEmpID.ToString();
四、为按钮添加确认对话框
button.Attributes.Add("onclick","return confirm(’确认?’)");
private void grdCustomer_ItemDataBound(object sender,
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
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 + "
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
’);");
}
六、超连接列传递参数
<asp:HyperLinkColumn Target="_blank" headertext="ID号" DataTextField="id"
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
NavigateUrl="aaa.aspx?id=’
<%# DataBinder.Eval(Container.DataItem, "数据字段1")%>’ & name=’<%# DataBinder.Eval
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
(Container.DataItem, "数据字段2")%>’ />
七、绑定日期格式
e.items.cell["time"].text=DateTime.Parse(e.items.cell["time"].text.ToString("yyyy-MM-dd"))
八、统一捕获异常 Global.asax中:
protected void Application_Error(Object sender, EventArgs e) {
if (Server.GetLastError() is HttpUnhandledException)
Server.Transfer("MyErrorPage.aspx");
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
//编写添加到日志的代码Log.add();
}
九、自定义异常处理
using System;
using System.Diagnostics;
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namespace MyAppException
{
/// <summary>
/// 从系统异常类ApplicationException继承的应用程序异常处理类。
/// 自动将异常内容记录到Windows NT/2000的应用程序日志
/// </summary>
public class AppException:System.ApplicationException
{
public AppException()
{
if (ApplicationConfiguration.EventLogEnabled)LogEvent("出现一个未知错误。");
}
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public AppException(string message)
{
LogEvent(message);
}
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public AppException(string message,Exception innerException)
{
LogEvent(message);
if (innerException != null)
{
LogEvent(innerException.Message);
}
}
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//日志记录类
using System;
using System.Configuration;
using System.Diagnostics;
using System.IO;
using System.Text;
using System.Threading;
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
namespace MyEventLog
{
/// <summary>
/// 事件日志记录类,提供事件日志记录支持
/// <remarks>
/// 定义了4个日志记录方法 (error, warning, info, trace)
/// </remarks>
/// </summary>
public class ApplicationLog
{
/// <summary>
/// 将错误信息记录到Win2000/NT事件日志中
/// <param name="message">需要记录的文本信息</param>
/// </summary>
public static void WriteError(String message)
{
WriteLog(TraceLevel.Error, message);
}
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/// <summary>
/// 将警告信息记录到Win2000/NT事件日志中
/// <param name="message">需要记录的文本信息</param>
/// </summary>
public static void WriteWarning(String message)
{
WriteLog(TraceLevel.Warning, message);
}
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/// <summary>
/// 将提示信息记录到Win2000/NT事件日志中
/// <param name="message">需要记录的文本信息</param>
/// </summary>
public static void WriteInfo(String message)
{
WriteLog(TraceLevel.Info, message);
}
/// <summary>
/// 将跟踪信息记录到Win2000/NT事件日志中
/// <param name="message">需要记录的文本信息</param>
/// </summary>
public static void WriteTrace(String message)
{
WriteLog(TraceLevel.Verbose, message);
}
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
/// <summary>
/// 格式化记录到事件日志的文本信息格式
/// <param name="ex">需要格式化的异常对象</param>
/// <param name="catchInfo">异常信息标题字符串.</param>
/// <retvalue>
/// <para>格式后的异常信息字符串,包括异常内容和跟踪堆栈.</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();
}
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/// <summary>
/// 实际事件日志写入方法
/// <param name="level">要记录信息的级别(error,warning,info,trace).</param>
/// <param name="messageText">要记录的文本.</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;
}
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EventLog eventLog = new EventLog("Application",
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ApplicationConfiguration.EventLogMachineName, ApplicationConfiguration.EventLogSourceName );
//写入事件日志
eventLog.WriteEntry(messageText, LogEntryType);
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
}
catch {} //忽略任何异常
}
} //class ApplicationLog
}
十、Panel 横向滚动,纵向自动扩展
<asp:panel style="overflow-x:scroll;overflow-y:auto;"></asp:panel>
十一、DataGrid行随鼠标变色
private void 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
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
["BACKGROUND-COLOR"]+"\"");
e.Item.Attributes.Add( "onmouseover","this.style.backgroundColor=\""+ "#EEE6F8"+"\"");
}
}
十二、读取DataGrid控件的TextBox值
foreach(DataGrid dgi in yourDataGrid.Items)
{
TextBox tb = (TextBox)dgi.FindControl("yourTextBoxId");
tb.Text
.
}
十三、当点击编辑键时,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")
}
}
十四、弹出对话框
private static string ScriptBegin = "<script language=\"JavaScript\">";
private static string ScriptEnd = "</script>";
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
public static void ConfirmMessageBox(string PageTarget,string Content)
{
string ConfirmContent="var retValue=window.confirm(’"+Content+"’);"+"if(retValue)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
{window.location=’"+PageTarget+"’;}";
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ConfirmContent=ScriptBegin + ConfirmContent + ScriptEnd;
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Page ParameterPage = (Page)System.Web.HttpContext.Current.Handler;
ParameterPage.RegisterStartupScript("confirm",ConfirmContent);
//Response.Write(strScript);
}
一、为GridView添加索引列
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
二、批量删除列
模板列代码:
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
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三、删除表格选定记录
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
四、为按钮添加确认对话框
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
五、点击表格行链接另一页
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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六、超连接列传递参数
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
七、绑定日期格式
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
八、统一捕获异常 Global.asax中:
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
九、自定义异常处理
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
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十、Panel 横向滚动,纵向自动扩展
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
十一、DataGrid行随鼠标变色
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
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十二、读取DataGrid控件的TextBox值
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十三、当点击编辑键时,控制文本框的大小
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
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十四、弹出对话框
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