⽹站建设基本常⽤代码1.为按钮添加确认对话框Button.Attributes.Add("onclick","return confirm('确认?')");Button.Attributes.Add("onclick","if(confirm('确定?')){return true;}else{return false;}")2.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")%>'/>3.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';");}4.清空CookieCookie.Expires=[DateTime];Response.Cookies("UserName").Expires = 0;5.Panel 横向滚动，纵向⾃动扩展<asp:panel style="overflow-x:scroll;overflow-y:auto;"></asp:panel>6.数字格式化<%#Container.DataItem("price")%> 结果:500.0000格式化:500.00<%#Container.DataItem("price","{0:￥#,##0.00}")%>int i=123456;string s=i.ToString("###,###.00");7.⽇期格式化<%# DataBinder.Eval(Container.DataItem,"Date")%> 结果:2004-8-11 19:44:28 格式化:2004-8-11<%# DataBinder.Eval(Container.DataItem,"Date","{0:yyyy-M-d}")%>8.时间格式化string aa=DateTime.Now.ToString("yyyy年MM⽉dd⽇");当前年⽉⽇时分秒 currentTime=System.DateTime.Now;当前年 int 年= DateTime.Now.Year;当前毫秒 int 毫秒= lisecond;9.⾃定义分页代码public static int pageCount; //总页⾯数public static int curPageIndex=1; //当前页⾯ if(ccDataGrid.CurrentPageIndex<(ccDataGrid.PageCount - 1)){//下⼀页 ccDataGrid.CurrentPageIndex += 1; curPageIndex+=1;}bind(); // ccDataGrid数据绑定函数if(ccDataGrid.CurrentPageIndex>0){ //上⼀页 ccDataGrid.CurrentPageIndex += 1; curPageIndex-=1;}bind(); // ccDataGrid数据绑定函数int a=int.Parse(JumpPage.Value.Trim());//JumpPage.Value.Trim()为跳转值if(a<DataGrid1.PageCount){ //直接页⾯跳转 DataGrid.CurrentPageIndex=a;}bind(); // ccDataGrid数据绑定函数10.变量.ToString()字符型转换转为字符串12345.ToString("n"); //⽣成 12,345.0012345.ToString("C"); //⽣成￥12,345.0012345.ToString("e"); //⽣成 1.234500e+00412345.ToString("f4"); //⽣成 12345.000012345.ToString("x"); //⽣成 3039 (16进制)12345.ToString("p"); //⽣成 1,234,500.00%11.客户端验证控件//验证空值<asp:requiredfieldvalidator id="valUsername" runat="server" controltovalidate="txtUsername" display="None" errormessage="请输⼊⽤户名 !!"></asp:requiredfieldvalidator>//验证⽹址<asp:regularexpressionvalidator id="rev" runat="server" ErrorMessage="公司⽹址不合法[要有http://] ！" Display="None" ControlToValidate="txtCPWebsite" ValidationExpression="http://(["w-]+".)+["w-]+(/["w- ./?%&=]*)?"></asp:regularexpressionvalidator>//验证邮箱<asp:RequiredFieldValidator id="rfv" runat="server" ControlToValidate="txtCPEmail" Display="None" ErrorMessage="请输⼊电⼦邮箱 !!"></asp:RequiredFieldValidator>//验证邮编<asp:regularexpressionvalidator id="rev5" runat="server" ErrorMessage="邮政编码不合法！" Display="None" ControlToValidate="txtCPPostCode" ValidationExpression=""d{6}"> </asp:regularexpressionvalidator>//显⽰错误信息<asp:validationsummary id="vs" runat="server" ShowSummary="False" ShowMessageBox="True"></asp:validationsummary>12.DataBinding绑定表达式1) 普通的绑定表达式<%# DataBinder.Eval(Container.DataItem, "ContactName") %>2) ⽂本+绑定表达式<asp:Label id=lblDate runat="server" Text='<%# "[" + DataBinder.Eval(Container, "DataItem.NewsCreatedate") + "]" %>' ForeColor="Red"></asp:Label>3) 同时带有显⽰格式的绑定表达式<%# DataBinder.Eval(Container,"ActiveDate","{0:yyyy-MM-dd}") %>4) 结合绑定表达式和模态框<A href='<%# ShowModalWin(Convert.ToString(DataBinder.Eval(Container.DataItem, "PictureImage")),Convert.ToString(DataBinder.Eval(Container.DataItem, "DetailID")),Convert.ToString(DataBinder.Eval(Container.DataItem, "PictureID")))%>'>其中：后台代码⽂件中ShowModalWin()⽅法的定义如下：protected string ShowModalWin(string PictureImage,string DetailID,string PictureID){return " window.showModalDialog(""Customers/ShowPictureInfo.aspx?pid="+PictureImage+"&did="+DetailID+"&id="+PictureID+""","""",""dialogHeight:320px;dialogWidth:480px;center:yes;help:no;status:no;scroll:no"");";}或者将参数提取出来单独定义成⼀变量：const string WINDOWPARAMSTRING="dialogWidth:540px;dialogHeight:420px;help:0;status:0;resizeable:1;scroll:no";Page.RegisterStartupScript("functionscript","<script language='javascript'>window.showModalDialog('EditUserService.aspx?URID="+iURID+"','','"+WINDOWPARAMSTRING+"') </script>");13.html字符转换的两个函数public string Encode(string str){str=str.Replace("&","&");str=str.Replace("'","''");str=str.Replace("""",""");str=str.Replace(" "," ");str=str.Replace("<","<");str=str.Replace(">",">");str=str.Replace(""n","<br>");return str;}public string Decode(string str){str=str.Replace(""n","<br>");str=str.Replace(">",">");str=str.Replace("<","<");str=str.Replace(" "," ");str=str.Replace(""","""");return str;}14.产⽣62位内任意数字⼤⼩写字母的随机数private static char[] constant={'0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z','A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'};public static string GenerateRandom(int Length){System.Text.StringBuilder newRandom = new System.Text.StringBuilder(62);Random rd= new Random();for(int i=0;i<Length;i++){newRandom.Append(constant[rd.Next(62)]);}return newRandom.ToString();}//调⽤string str=GenerateRandom(6);//参数表⽰需要产⽣随机数的数⽬15.图像加⼊版权信息using System.Drawing;using System.IO;using System.Drawing.Imaging;private void AddTextToImg(string fileName,string text){if(!File.Exists(MapPath(fileName))){throw new FileNotFoundException("The file don't exist!");}if( text == string.Empty ){return;}//还需要判断⽂件类型是否为图像类型System.Drawing.Image image = System.Drawing.Image.FromFile(MapPath(fileName));Bitmap bitmap = new Bitmap(image,image.Width,image.Height);Graphics g = Graphics.FromImage(bitmap);float fontSize = 12.0f; //字体⼤⼩float textWidth = text.Length*fontSize; //⽂本的长度//下⾯定义⼀个矩形区域，以后在这个矩形⾥画上⽩底⿊字float rectX = 0;float rectY = 0;float rectWidth = text.Length*(fontSize+8);float rectHeight = fontSize+8;//声明矩形域RectangleF textArea = new RectangleF(rectX,rectY,rectWidth,rectHeight);Font font = new Font("宋体",fontSize); //定义字体Brush whiteBrush = new SolidBrush(Color.White); //⽩笔刷，画⽂字⽤Brush blackBrush = new SolidBrush(Color.Black); //⿊笔刷，画背景⽤g.FillRectangle(blackBrush,rectX,rectY,rectWidth,rectHeight);g.DrawString(text,font,whiteBrush,textArea);MemoryStream ms = new MemoryStream( );//保存为Jpg类型bitmap.Save(ms,ImageFormat.Jpeg);//输出处理后的图像，这⾥为了演⽰⽅便，我将图⽚显⽰在页⾯中了Response.Clear();Response.ContentType = "image/jpeg";Response.BinaryWrite( ms.ToArray() );g.Dispose();bitmap.Dispose();image.Dispose();}//调⽤AddTextToImg("me.jpg","Family.Man");16.常⽤正则表达式集锦"^""d+$" //⾮负整数（正整数 + 0）"^[0-9]*[1-9][0-9]*$" //正整数"^((-""d+)|(0+))$" //⾮正整数（负整数 + 0）"^-[0-9]*[1-9][0-9]*$" //负整数"^-?""d+$" //整数"^""d+("".""d+)?$" //⾮负浮点数（正浮点数 + 0）"^(([0-9]+"".[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*"".[0-9]+)|([0-9]*[1-9][0-9]*))$" //正浮点数"^((-""d+("".""d+)?)|(0+("".0+)?))$" //⾮正浮点数（负浮点数 + 0）"^(-(([0-9]+"".[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*"".[0-9]+)|([0-9]*[1-9][0-9]*)))$" //负浮点数"^(-?""d+)("".""d+)?$" //浮点数"^[A-Za-z]+$" //由26个英⽂字母组成的字符串"^[A-Z]+$" //由26个英⽂字母的⼤写组成的字符串"^[a-z]+$" //由26个英⽂字母的⼩写组成的字符串"^[A-Za-z0-9]+$" //由数字和26个英⽂字母组成的字符串"^""w+$" //由数字、26个英⽂字母或者下划线组成的字符串"^[""w-]+("".[""w-]+)*@[""w-]+("".[""w-]+)+$" //email地址"^[a-zA-z]+://(""w+(-""w+)*)("".(""w+(-""w+)*))*(""?""S*)?$" //url17.绑定在DataList中的DropDownListprivate void dlistOrder_EditCommand(object source, System.Web.UI.WebControls.DataListCommandEventArgs e){//绑定订单状态for(int i=0;i<((DropDownList)dlistOrder.Items[e.Item.ItemIndex].FindControl("ddlFlag")).Items.Count;i++){if(((DropDownList)dlistOrder.Items[e.Item.ItemIndex].FindControl("ddlFlag")).Items[i].Value == dv.Table.Rows[0]["OrStatus"].ToString()) {((DropDownList)dlistOrder.Items[e.Item.ItemIndex].FindControl("ddlFlag")).Items[i].Selected = true;}}}//另⼀种绑定⽅式，绑定送货⽅式DataView shipType = OrderSO.GetShipTypeList();DropDownList ddlShipType = (DropDownList)dlistOrder.Items[e.Item.ItemIndex].FindControl("ddlShipType");ddlShipType.DataSource = shipType;ddlShipType.DataTextField = "StName";ddlShipType.DataValueField = "StId";ddlShipType.DataBind();ddlShipType.SelectedIndex = ddlShipType.Items.IndexOf(ddlShipType.Items.FindByValue(dv.Table.Rows[0]["OrShipType"].ToString()));18.验证⽤户名必须以字母打头且不能含有中⽂String sUsername = txtUsername.Text.Trim();if(!Regex.IsMatch(sUsername, "^[A-Za-z].*")){Utility.MessageBox(this,"nameFormatError","⽤户名要以字母开头, 且不要⽤中⽂名称 !!");return;}。
