获取客户端IPSystem.Web.HttpContext.Current.Request.UserHostAddress;
动态创建GridView的列
GridView1.DataSourceID = "SqlDataSource1";
GridView1.AutoGenerateColumns = false;
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
GridView1.DataKeyNames = new string[]
{ "EmployeeID" };
GridView1.AllowPaging = true;
GridView1.AllowSorting = true;
GridView1.PageSize = 5;
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
BoundField bf1 = new BoundField();
BoundField bf2 = new BoundField();
BoundField bf3 = new BoundField();
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
bf1.HeaderText = "Employee ID";
bf1.DataField = "EmployeeID";
bf1.ReadOnly = true;
bf1.SortExpression = "EmployeeID";
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
bf2.HeaderText = "First Name";
bf2.DataField = "FirstName";
bf2.SortExpression = "FirstName";
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
bf3.HeaderText = "Last Name";
bf3.DataField = "LastName";
bf3.SortExpression = "LastName";
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
CommandField cf = new CommandField();
cf.ButtonType = ButtonType.Button;
cf.ShowCancelButton = true;
cf.ShowEditButton = true;
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
GridView1.Columns.Add(bf1);
GridView1.Columns.Add(bf2);
GridView1.Columns.Add(bf3);
GridView1.Columns.Add(cf);
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
打开新的窗口并传送参数:
response.write("<script>window.open(’*.aspx?id="+this.DropDownList1.SelectIndex+"&id1="+
+"’)</script>")
1.父窗口中打开子窗口
如:
window.open ('children.aspx','newwindow','height=100,width=400,top=200,left=200,toolbar=no,menubar=no,scrollbars=no, resizable=no,location=no, status=no')
基本语法:
window.open(pageURL,name,parameters)
其中:
pageURL 为子窗口路径
name 为子窗口句柄
parameters 为窗口参数(各参数用逗号分隔)
参数 | 取值范围 | 说明
alwaysLowered | yes/no | 指定窗口隐藏在所有窗口之后
alwaysRaised | yes/no | 指定窗口悬浮在所有窗口之上
depended | yes/no | 是否和父窗口同时关闭
directories | yes/no | Nav2和3的目录栏是否可见
height | pixel value | 窗口高度
hotkeys | yes/no | 在没菜单栏的窗口中设安全退出热键
innerHeight | pixel value | 窗口中文档的像素高度
innerWidth | pixel value | 窗口中文档的像素宽度
location | yes/no | 位置栏是否可见
menubar | yes/no | 菜单栏是否可见
outerHeight | pixel value | 设定窗口(包括装饰边框)的像素高度
outerWidth | pixel value | 设定窗口(包括装饰边框)的像素宽度
resizable | yes/no | 窗口大小是否可调整
screenX | pixel value | 窗口距屏幕左边界的像素长度
screenY | pixel value | 窗口距屏幕上边界的像素长度
scrollbars | yes/no | 窗口是否可有滚动栏
titlebar | yes/no | 窗口题目栏是否可见
toolbar | yes/no | 窗口工具栏是否可见
Width | pixel value | 窗口的像素宽度
z-look | yes/no | 窗口被激活后是否浮在其它窗口之上
2.子窗体中获取对像并传递值:
如:
window.opener.document.getElementById('text1').value='子窗口传值';
3.在子窗体中关闭子窗体:
self.close();
完毕。
为按钮添加确认提示对话框
Button1.Attributes.Add("onclick","return confirm(’确认?’)");
button.attributes.add("onclick","if(confirm(’are you sure?’)){return true;}else{return false;}")
获取错误信息并到指定页面
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
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)
//其余的非HttpUnhandledException异常交给ASP.NET自己处理就okay了 :)
}
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
清空Cookie
Cookie.Expires=[DateTime];
Response.Cookies("UserName").Expires = 0
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
将回车转换为TAB
//当在有keydown事件的控件上敲回车时,变为tab
public void Tab(System.Web .UI.WebControls .WebControl webcontrol)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
{
webcontrol.Attributes .Add ("onkeydown", "if(event.keyCode==13) event.keyCode=9");
}
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
设定全局变量
Global.asax中
Application_Start()事件中
添加Application[属性名] = xxx;
就是你的全局变量
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
加密
在.net中提供两种加密方式MD5和SHA1
TextBox2.Text = FormsAuthentication.HashPasswordForStoringInConfigFile(TextBox1.Text, "MD5");
Panel 横向滚动,纵向自动扩展
<asp:panel style="overflow-x:scroll;overflow-y:auto;"></asp:panel>