asp net c# book

implementation of multiple query conditions) 4. Button processing is supported. 5. Support for analysis graphics 6. list-based direct Excel export support 7. The list is created in the same way as that of the gridview. You can configure links, buttons, images, and click titles to sort the list. 8. Supports row-and-column calculation, including summation, averaging, and self-defined calculation of the end row, column data aggregation, Javascript script calculation, and

C #, ASP . Net. For common SQL statements such as select, the normal parameterized statement format is as follows: Select * From profile where employeeid = @ employeeid For example: String loginstring = "select * From profile where employeeid = @ employeeid "; But please attention to the like SQL sentence: Select * From profile where employeeid like

: Beijing startup company is hiring ASP. NET (C #) programmers [full time ]-[Publish on behalf of friends] 1. Three years + Asp.net (C #) project experience 2. Be familiar with JavaScript and CSS scripts and have more requirements on JavaScript. 3. Experience in developing large websites is preferred. Historical wo

. 3. Title: Agile Software Development: Principles, models, and practices Author: Robert C. Martin Translator: Deng Hui Published on: February 1, September 2003 Press: Tsinghua University Press Recommended reason: Uncle Bob's most popular work. If you have read "Design Pattern" and "Reconstruction", we recommend that you continue to read this book, and your understanding of the design patte

C # simple and easy to use IsWhat of ASP. NET general extension Functions, Good things need to be sorted and classified by people Note: The namespace SyntacticSugar must be referenced. Usage: /*** Extension function name *** // [IsInRange] int num = 100; // if (num> 100 num 　　 Source code: Using System; using System. collections. generic; using System. lin

WriteFile Implementation Downloadprotected void button2_click (object sender, EventArgs e){String Filename= "Aaa.zip";//file name saved by the clientString Filepath=server.mappath ("Download/aaa.zip");//pathFileInfo fileinfo=new FileInfo (FilePath);Response.Clear ();Response.clearcontent ();Response.ClearHeaders ();Response.AddHeader ("Content-disposition", "attachment;filename=" + filename);Response.AddHeader ("Content-length", fileInfo.Length.ToString ());Response.AddHeader ("content-transfer-

Problem Description: Today, Excel encountered a problem, the local use of microsoft.jet.oledb.4.0 processing, the normal completion of the requirements,An exception occurred after uploading to the server, by troubleshooting the discovery of a problem in the Excel file read, and then presumably becauseDid not install the corresponding driver, and then on the Microsoft Official website to find the microsoft.ace.oledb.12.0; this driver,This issue is resolved successfully after installation on the s

-id: {0}\r\n"+"content-type:text/html, charset=\ "gbk\" \r\n\r\n"+""+"xmlns:x=\ "urn:schemas-microsoft-com:office:excel\" >\r\n\r\n"+""+""+""+""+""+""+""+""+""+"", GID); Sbsheet.append (""); Sbsheet.append (""); for(inti =0; i ) {Sbsheet.appendformat ("", D.columns[i]. ColumnName); } sbsheet.append (""); for(intj =0; J ) {sbsheet.append (""); for(intK =0; K ) {Sbsheet.appendformat ("", Convert.ToString (D.rows[j][k])); } sbsheet.append (""); } sbsheet.append (""); Sbsheet.append ("

This method is suitable for ASP. NET (C #) + Oracle The field type in the Oracle table is blob. # Region Upload File (Binary) // Static public byte [] filetobinary (fileupload hifile) { Try { If (hifile. hasfile) { If (isallowedextension (hifile )) { // Obtain the size of the uploaded file Int filelen = hifile. postedfile. contentlength; Byte [] filedata = ne

Work Location: Tianjin Nankai District Basic requirements: Unlimited work experience Familiar with ASP. NET (C #) programming and development Master Javascript, XHTML, CSS, and other related technologies Familiar with SQL Server and stored procedures Good team spirit and conscientious and responsible work attitude. Special requirements: Activ

Your div plus ID number, and then write on runat= "Server", become a server-side control, and then the background can be directly used with the ID number. innerhtml= "HTML content" so that you can public string title;protected void Page_Load (object sender, EventArgs e) { Title = "Test";} Front desk 　　Asp. NET in the background with C #, to the foreground inser

sourceReportDataSource rds = new ReportDataSource ("DataSet1", ds. Tables[0]);Reportviewer1.visible = true;ReportViewer1.LocalReport.DataSources.Clear ();REPORTVIEWER1.LOCALREPORT.DATASOURCES.ADD (RDS);ReportViewer1.LocalReport.Refresh ();}?Attention:?(1), to import the following namespaces:??Using System.Data;Using System.Data.SqlClient;Using System.Configuration;Using Microsoft.Reporting.WebForms;?(2). Define Connection string variablespublic string strconn = configurationmanager.connectionst

Idea: Because the "ordinal" is related to the line number of repeater, the value of "ordinal" should be output in Repeater's ItemDataBound event. To make it easier to assign a value to "ordinal", we use a Label control.Note: The itemindex of repeater is starting from 0, and the "ordinal" column is starting from 1, so itemindex to add 1.The foreground code looks like this:Front Code"Repeater1"runat="Server"Onitemdatabound="Repeater1_itemdatabound"> "1"style="border-color: #000000; border-collapse

), Getrandomcolor ());}MemoryStream ms = new MemoryStream ();Img. Save (MS, System.Drawing.Imaging.ImageFormat.Jpeg);byte[] data = Ms. GetBuffer ();G.dispose ();Ms. Close ();return data;}Determine if the verification code is correctpublic static bool Isvalidate (string Code) {if (string. IsNullOrEmpty (Code) | |! Code. ToLower (). Equals (Code.tolower ())) {return false;}return true;}}}Calls in the controllerPublic ActionResult Validatecode () {Gets the specified length verification codeString c

/* Add sql*/String fields = "";String values = "";Fields + = "XM"; Values + = "'" + request.form["XM". ToString () + "'";Fields + = ", xb"; Values + = ", '" + request.form["XB"]. ToString () + "'";Fields + = ", Sfz"; Values + = ", '" + request.form["SFZ"]. ToString () + "'";Fields + = ", Dzyj"; Values + = ", '" + request.form["Dzyj"]. ToString () + "'";sql = "INSERT INTO Ekecms_eketeam (" + fields + ") VALUES (" + Values + ")";/* Modify sql*/sql = "Update ekecms_eketeam set zdmj= '" + request.fo

Label:First join the namespace using System.Data.SqlClient; 1. Enquiry SqlConnection conn = new SqlConnection (); Conn. ConnectionString = "Data source= (local); Initial catalog= database name; Userid=sa; password=123456 "; Conn. Open (); String strsql= "SELECT statement"; SqlCommand cmd = new SqlCommand (strSQL, conn); SqlDataReader sqlreader = cmd. ExecuteReader (); while (Sqlreader. Read ()) { txtname.text= sqlreader["column name"]. ToString (); } Sqlreader. Close (); Conn. Close (); 2. Inser

(); Mysqlconnection Con=Newmysqlconnection (Ser); //string sqlin = "INSERT into Ertong (name2,mima,name) VALUES (name2= '" +txtname2. Text.trim () + "', mima= '" +txtmima. Text.trim () + "'" + ", name= '" +session["name"]. ToString () + "'"; stringSqlin ="INSERT INTO Ertong (Name2,mima,name,beizu) VALUES ('"+ txtname2. Text.trim () +"', '"+ Txtmima. Text.trim () +"'"+", '"+ session["name"]. ToString () +"', '"+txtpassword2. Text.trim () +"')"; Mysqlcommand com=NewMysqlcommand (Sqlin

Web download filepublic static bool Downloadsoft (string Downloadpath, String Fullfilepath, String FileName){BOOL flag = FALSE;Try{if (! Directory.Exists (Downloadpath)){Directory.CreateDirectory (Downloadpath);}using (FileStream fs = new FileStream (Downloadpath + "/" + FileName, FileMode.Create)){Create requestWebRequest request = WebRequest.Create (Fullfilepath + FileName);Receive responseWebResponse response = Request. GetResponse ();Output streamStream Responsestream = Response. GetResponse

(key)) {Hashtable userlist=onlineuserlist; Userlist.remove (key); Onlineuserlist=userlist; return true; } returnre; } /// ///determine if the user is online/// Public Static BOOLuserIsOnline (stringadminname) {onlineclearuserouttimeinonlinelist (); returnOnlineuserlist.contains (adminname)?true:false; } /// ///Delete Timeout online users/// Public Static voidonlineclearuserouttimeinonlinelist () {intOnlinetimeout = -; Hashtable List=NewHashtable

1. First download "Npoi" to the Internet. DLL ". Reference.2. Create a new operation class "ExcelHelper.cs":Using system.collections.generic;using system.data;using system.io;using system.linq;using NPOI. HSSF. Usermodel;using Npoi. Ss. Usermodel;using Npoi. XSSF. Usermodel;public class excelhelper{public class X2003 {#region Excel2003//3. Main code of the program background:Using system;using system.collections.generic;using system.web;using system.web.ui;using System.Web.UI.WebControls;