programming with windows forms c

... and other processes applica-on the computer You can use the Capplica-oncurrency Visualizer to locate performance bottlenecks, processor underutilization, thread conten-tion, cross-core thread ... environment is also a characteristic of some embedded applications, such as industrial process control The life cycle of such programs matches the life cycle of the specific hard-ware they were ... techniques that synchronize concurrent threads by blocking their execution in certain circum-stances Examples include locks, atomic compare-and-swap opera-tions, and semaphores All of these techniques

Ngày tải lên: 24/03/2014, 01:21

... faculty_id and faculty_name columns from the Faculty table by checking two checkboxes related to those two columns • Go to the second pane and uncheck the checkbox for the faculty_name column ... the selected faculty ID associated with the selected faculty from the Faculty Name Combobox control when users click on the Select button because no faculty name is available from the Course table ... in the constructor of the SelectionForm since this constructor should be called fi rst as an instance of the SelectiionForm is created Open the SelectionForm window and click on the View Code button

Ngày tải lên: 17/10/2013, 19:15

... "No matched faculty_id found!" ); } accCmdCourse.Connection = logForm.accConnection; accCmdCourse.CommandType = CommandType Text; accCmdCourse.CommandText = strCourse; accCmdCourse.Parameters.Add( ... Connection object from the LogInForm object since we created our database connection object in that class C The Command object is initialized with the Connection object, CommandType, and CommandText ... OleDbDataAdapter (); OleDbCommand accCmdFaculty = new OleDbCommand (); OleDbCommand accCmdCourse = new OleDbCommand (); DataTable accCourseTable = new DataTable (); DataTable accFacultyTable = new DataTable

Ngày tải lên: 20/10/2013, 11:15

... logForm.getLogInForm(); cmdObj.Connection = logForm.sqlConnection; cmdObj.CommandType = CommandType.StoredProcedure; cmdObj.CommandText = cmdString; } SQLSelectRTObject.StudentForm BuildCommand() Figure 5.131 Coding ... namespace System.Data.SqlClient to the namespace declaration section on this SP form code window. The only difference is the codes for the Select button Click method, cmdSelect_Click(). Don ’ t copy ... StudentCourseDataAdapter.Dispose(); sqlCmdStudentCourse.Dispose(); } A B C D E F G H I J SQLSelectRTObject.SPForm cmdSelect_Click() Figure 5.137 Coding for the Select button Click method. c05.indd

Ngày tải lên: 20/10/2013, 11:15

... data queries on Microsoft Access 2007, SQL Server 2005, and Oracle databases • Use the OleDbConnection, SqlConnection, or OracleConnection class to connect to Microsoft Access 2007, SQL Server ... Microsoft Access 2007 database, CSE_DEPT.accdb, which was developed in Chapter 2 and is located in the folder Database\Access located at the accompanying site: ftp://ftp.wiley.com/public/sci_tech_med/practical_database ... www.verypdf.com to remove this watermark. Trang 12 • Use the OleDbConnection, SqlConnection, and OracleConnection class to dynamically connect to Microsoft Access 2007, SQL Server 2005 Express, and Oracle

Ngày tải lên: 24/10/2013, 09:15

... identical with the data type of each private void cmdInsert_Click(object sender, EventArgs e) { int check = 0, intInsert = 0; CSE_DEPTDataSet.CourseRow newCourseRow; InitCourseInfo(); check = CheckCourseInfo(); ... can private void cmdInsert_Click(object sender, EventArgs e) { int check = 0, intInsert = 0; InitCourseInfo(); check = CheckCourseInfo(); if (check == 0) { facultyTableAdapter.ClearBeforeFill ... check = CheckCourseInfo(); } SQLInsertWizard.InsertCourseForm cmdInsert_Click() Figure 6.27 Coding for the Insert button Click method. private void InitCourseInfo() { CourseInfo[0] = txtFacultyID.Text;

Ngày tải lên: 24/10/2013, 09:15

... enhancements and as such must be run asSQL scripts Here is one example of a DBCC statement: Further-DBCC CHECKDBThis DBCC statement is used for checking the structural integrity of the objects ... triggersdescribed in “Using Triggers.” • Microsoft Access: Microsoft Access doesn’t support stored procedures or triggers However, views can be reproduced as queries in Microsoft Access,but you can’t ... used for checking the logic as well as the consistency of your databases using T-SQL DBCC statements more, many of the DBCC statements can also fix the problems detected whenrunning DBCC statements

Ngày tải lên: 27/10/2013, 07:15

... modifi cations to other forms Basically, these modifi cations change the con-nection object from SqlConnection to OleDbConnection for all other forms to match the connection requirement of the Microsoft ... Empty) check++; } return check; } private void cmdBack_Click( object sender, EventArgs e) { this Close(); } private void cmdCancel_Click( object sender, EventArgs e) { txtFacultyID.Text ... string cmdString = "InsertFacultyCourse" ; OracleCommandoraCommand = newOracleCommand (); LogInForm logForm = new LogInForm (); InitCourseInfo(); check = CheckCourseInfo(); if (check

Ngày tải lên: 28/10/2013, 16:15

... constructor of the LogIn Form class and change the connection string to: string accString = “ Provider=Microsoft.ACE.OLEDB.12.0; ” + “ Data Source=C:\\database\\Access\\CSE_DEPT.accdb; ” Also change ... string strCourse = “ SELECT Course.course_id, Course.course FROM Course, Faculty ” strCourse += “ WHERE (Course.faculty_id=Faculty.faculty_id) AND (Faculty.faculty_name=:name) ” Change the ... Student Form classes since we will not uses these two forms: cmdSelect_Click(this.cmdSelect, null); Now let ’ s create our stored procedure in the Microsoft Access 2007 database 7.8.1.2 Create Stored

Ngày tải lên: 28/10/2013, 16:15

... "<script>window.close()</script>" ); } A B _Default cmdCancel_Click() Figure 8.9 Coding for the Cancel button ’ s Click method protected void cmdLogIn_Click( object sender, ... function stores an object, the Connection object in this case In order to access and use that Connection object stored in the Application global function, a casting ( SqlConnection ) must be clearly ... database Connection object is created with the connection string as the argument E The Connection object sqlConnection is added into the Application state function, and this object can be used

Ngày tải lên: 07/11/2013, 11:15

... sqlCommand.Connection = (SqlConnection)Application["sqlConnection"]; sqlCommand.CommandType = CommandType.Text; sqlCommand.CommandText = cmdString; sqlCommand.Parameters.Add("@FacultyName", ... button ’ s Click method. protected void cmdSelect_Click(object sender, EventArgs e) { string cmdString = "SELECT faculty_id, faculty_name, office, phone, college, title, email FROM Faculty "; ... perform the data actions in the database in the future. E. The Command object is initialized with the Connection object, Command type and Command text. protected void cmdUpdate_Click(object sender,

Ngày tải lên: 07/11/2013, 11:15

... a ConnectionStringSettingsCollection object containing the contents of the ConnectionStringsSection object for the current application ’ s default confi guration, and a ConnectionStringsSection ... ConfigurationManager.ConnectionStrings["sql_conn"].ConnectionString; SqlConnection sqlConnection = new SqlConnection(); sqlConnection.ConnectionString = cmdString; sqlConnection.Open(); if (sqlConnection.State != System.Data.ConnectionState.Open) ... double clicking on it, and change the compiler directive from -CodeBehind= " ~ /App_Code/Service.cs " to CodeBehind= " ~ /App_Code/WebServiceSQLSelect.cs " Also change the class

Ngày tải lên: 07/11/2013, 11:15

... WebServiceSQLInsert.asmx by double - clicking on it, and change the compiler directive from CodeBehind= " ~ /App_Code/WebServiceSQLSelect.cs " to CodeBehind= " ~ /App_Code/WebServiceSQLInsert.cs ... process E The Command object is created with two arguments: query string and connection object The coding load can be reduced but the working load cannot when creating a Command object in this ... WinClientSQLInsert.pdf that can be found from the folder DBProjects\Chapter 9\Doc that is located at the site ftp:// applica-ftp.wiley.com/public/sci_tech_med/practical_database For your convenience,

Ngày tải lên: 14/12/2013, 15:15

... name string cnString = "Data Source=(local); ➥ Initial Catalog=RealWorld;Integrated Security=SSPI;"; //declare Connection, command and other related objects SqlConnection conReport = new SqlConnection(cnString); SqlCommand ... dataset cmdReport.CommandType = CommandType.Text; cmdReport.Connection = conReport; cmdReport.CommandText = "Select * FROM dbo.AddressList"; //read data from command object drReport = cmdReport.ExecuteReader(); //load ... user MessageBox.Show(ex.Message); } finally { //check if connection is still open then attempt to close it if (conReport.State == ConnectionState.Open) CHAPTER 4 ■ REPORTING WITH WINDOWS FORMS1 14 8547ch04final.qxd 8/30/07...

Ngày tải lên: 05/10/2013, 08:48

... to create the Windows Forms application). 5. Click the OK button to finish the process. After you click OK, Visual Studio will create a new Windows Forms application project. You’ll also notice ... dsProductProfit(); try { // open connection conReport.Open(); cmdReport.CommandType = CommandType.Text; cmdReport.Connection = conReport; // get query string from string builder cmdReport.CommandText = "SELECT * FROM ... pane, select Windows Forms Application. 4. Please give the application a name; I’ve called the project ProductProfit. You may choose a different location for storing the application files according...

Ngày tải lên: 05/10/2013, 08:48

... output. ConsoleAdder.cs // // ConsoleAdder.cs © 2001 by Charles Petzold Chapter 1: Console Thyself Overview In that succinct and (perhaps consequently) much-beloved classic tutorial The C Programming ... version of the program. CsDateConstructors.cs // // CsDateConstructors.cs © 2001 by Charles Petzold // using System; class CsDateConstructors { public static void Main() { try ... obscure code. C# also supports a goto in the switch and case construction to branch to another case: switch (a) { case 1: b = 2; goto case 3; case 2: c = 7; goto default; case...

Ngày tải lên: 10/12/2013, 14:16

... Where ProductID IN (" & strItems & ")", ocnn) ocmdSelect.CommandType = CommandType.Text ocnn.Open() ocmdSelect.ExecuteNonQuery() Catch excpCommand As Exception ... CommandType.Text ocnn.Open() ocmdUnSelect.ExecuteNonQuery() Catch excpCommand As Exception MessageBox.Show(excpCommand.Message) End Try LoadUnSelectedProducts() LoadSelectedProducts() ... Beverages category chosen in the top combo box. The Selected and Unselected Products ListBox controls are filled in with the appropriate products. If you click on a product in the Unselected Products...

Ngày tải lên: 14/12/2013, 20:16

... ■ EchoCancellationMode Denes the current echo cancellation mode. Values can be • CancellationAndSuppression Perform echo cancellation and suppression. • CancellationOnly Perform echo cancellation ... (name a speci c directory along with directions to create it, if necessary). 2. If prompted, review the displayed end user license agreement. If you accept the terms, select the accept option, ... Musgrave and Carol Dillingham Project Editor: Carol Dillingham Editorial Production: Megan Smith-Creed Technical Reviewer: Pierce Bizzaca; Technical Review services provided by Content Master,...

Ngày tải lên: 23/03/2014, 02:20