database programming with vb net ado net tips tutorials and code

Ngày tải lên: 12/08/2014, 16:20

Ngày tải lên: 12/08/2014, 16:20

Ngày tải lên: 12/08/2014, 16:20

Ngày tải lên: 12/08/2014, 16:20

Ngày tải lên: 12/08/2014, 16:20

Ngày tải lên: 12/08/2014, 16:20

Ngày tải lên: 12/08/2014, 16:20

... lines 20 and 21. Common ASP .NET Code Techniques C HAPTER 2 42 2143-2 ch02 3/19/01 3:43 PM Page 42 developer cannot easily add and remove elements without concerning himself with the size and makeup ... 2.11 The user can enter HTML and a filename and the ASP .NET page will generate a file on the Web server with the proper name and contents! Listing 2.11 is the first code sample we’ve looked at ... top of the stack without removing the element. Common ASP .NET Code Techniques C HAPTER 2 2 COMMON ASP .NET C ODE TECHNIQUES 19 2143-2 ch02 3/19/01 3:43 PM Page 19 When working with the various...

Ngày tải lên: 17/01/2014, 06:20

... selForm = new SelectionForm(); accCommand.Connection = accConnection; accCommand.CommandType = CommandType.Text; accCommand.CommandText = cmdString; accCommand.Parameters.Add("@Param1", ... relationship between the LINQ and the Microsoft Access database, but we can set up an indirect relationship between them using the LINQ to ADO .NET since ADO .NET covers any kinds of database including ... creat- ing and implementing connection objects and data operation objects related to ADO. NET and (2) they allow you to use different methods to access and manipulate data from the data source and...

Ngày tải lên: 17/10/2013, 19:15

... provides a connection to the database and trans- lates Standard Query Operators to the standard SQL statements to access our database. In order to avoid access and use the same database simultaneously, ... sqlCommand.Connection = logForm.sqlConnection; sqlCommand.CommandType = CommandType.Text; sqlCommand.CommandText = cmdString; sqlCommand.Parameters.Add("@courseid", SqlDbType.Char).Value ... query string and the Add() method for the Parameters collection. B. Two data components, Command and DataTable, are created here and they will be used in this method. C. The Command object...

Ngày tải lên: 20/10/2013, 11:15

... txtPassWord.Text; oraCommand.Connection = oraConnection; oraCommand.CommandType = CommandType.Text; oraCommand.CommandText = cmdString; oraCommand.Parameters.Add(oraUserName); oraCommand.Parameters.Add(oraPassWord); ... txtPassWord.Text; oraCommand.Connection = oraConnection; oraCommand.CommandType = CommandType.Text; oraCommand.CommandText = cmdString; oraCommand.Parameters.Add(oraUserName); oraCommand.Parameters.Add(oraPassWord); ... other codes, open the code window of the Student form, select those codes, copy, and then paste them to our new SP form code window. One point you need to note is that when you copy the codes...

Ngày tải lên: 20/10/2013, 11:15

... beginners to Visual C# and databases. This method utilizes many powerful tools and wizards provided by Visual Studio .NET 2008 and ADO .NET to simplify the coding process, and most of codes are autogenerated ... oraCommand.Connection = logForm.oraConnection; oraCommand.CommandType = CommandType.StoredProcedure; oraCommand.CommandText = cmdString; oraCommand.Parameters.Add(paramFacultyName); oraCommand.Parameters.Add(paramFacultyCourse); ... OleDbCommand, SqlCommand, and OracleCommand class to dynamically execute the data query with dynamic parameters to three kinds of databases. ã Use the OleDbDataAdapter, SqlDataAdapter, and OracleDataAdapter...

Ngày tải lên: 24/10/2013, 09:15

... sqlCommand.Connection = logForm.sqlConnection; sqlCommand.CommandType = CommandType.Text; sqlCommand.CommandText = cmdString; InsertParameters(sqlCommand); //FacultyDataAdapter.InsertCommand ... provider, the location and the name of the database, and username and password used to access the database. In this case, no username and password are utilized for our database, so those two ... logForm.getLogInForm(); accCommand.Connection = logForm.accConnection; accCommand.CommandType = CommandType.Text; accCommand.CommandText = cmdString; accCommand.Parameters.Add("@name",...

Ngày tải lên: 24/10/2013, 09:15

... 0; OracleCommand oraCommand = new OracleCommand(); oraCommand.Connection = oraConnection; oraCommand.CommandType = CommandType.StoredProcedure; oraCommand.CommandText = cmdString; oraCommand.Parameters.Add("Name", ... update and delete data in the databases. Generally, many different methods are provided and supported by Visual C# .NET and .NET Framework to help users perform data updating and deleting in the database. ... Chapter 7 Data Updating and Deleting with Visual C #. NET Practical Database Programming With Visual C# .NET, by Ying Bai Copyright â 2010 the Institute of Electrical and Electronics Engineers,...

Ngày tải lên: 28/10/2013, 16:15

... logForm.getLogInForm(); SqlCommand sqlCommand = new SqlCommand(); int intUpdate = 0; sqlCommand.Connection = logForm.sqlConnection; sqlCommand.CommandType = CommandType.Text; sqlCommand.CommandText = cmdString; ... OracleCommand oraCommand = new OracleCommand(); int intUpdate = 0; oraCommand.Connection = logForm.oraConnection; oraCommand.CommandType = CommandType.StoredProcedure; oraCommand.CommandText ... "Delete", vbButton); if (Answer == System.Windows.Forms.DialogResult.Yes) { sqlCommand.Connection = logForm.sqlConnection; sqlCommand.CommandType = CommandType.Text; sqlCommand.CommandText...

Ngày tải lên: 28/10/2013, 16:15

... Access database and the SQL Server database, in this chapter we only use the SQL Server database and the Oracle database as our target databases to illustrate how to select, display, and manipulate ... (user_name=@name) AND (pass_word=@word)"; SqlCommand sqlCommand = new SqlCommand(); SqlDataReader sqlReader; sqlCommand.Connection = sqlConnection; sqlCommand.CommandType = CommandType.Text; ... Command object and DataReader object. C. The Command object is initialized and built by assigning it with the Connection object, commandType, and Parameters collection properties of the Command...

Ngày tải lên: 07/11/2013, 11:15

... SqlCommand sqlCommand = new SqlCommand(); int intDelete = 0; sqlCommand.Connection = (SqlConnection)Application["sqlConnection"]; sqlCommand.CommandType = CommandType.Text; sqlCommand.CommandText ... oraCommand.Connection = (OracleConnection)Application["oraConnection"]; oraCommand.CommandType = CommandType.Text; oraCommand.CommandText = cmdString; UpdateParameters(ref oraCommand); ... provided by the .NET Framework, and you implement the .NET Framework by using the tools such as Visual Studio .NET provided by the .NET Framework, too. ____ 5. ASP .NET 3.5 is a programming framework...

Ngày tải lên: 07/11/2013, 11:15

... " ;Database connection is failed"; ReportError(SQLResult); return null; } sqlCommand.Connection = sqlConnection; sqlCommand.CommandType = CommandType.Text; sqlCommand.CommandText ... the last section, this code indicates the programming language in which the Web Service ’ s code - behind fi le is written, the code - behind fi le ’ s name and location, and the class that defi ... test and confi rm this connectionString , we can develop some codes and modify the coding of the default HelloWorld Web method in the code - behind page to do that. Close the web.confi g fi le and...

Ngày tải lên: 07/11/2013, 11:15

... ASP .NET Web Service to Update and Delete Data for SQL Server Database 809 G. The Command object is initialized with associated data objects such as Connection object, Command text, and Command ... Studio .NET 2008 environment. 9.5.3.1 Develop Stored Procedure Web U pdate C ourse SP Open Visual Studio .NET 2008 and the Server Explorer window, and connect and expand our sample SQL Server database ... ReportError(SQLResult); return null; } sqlCommand.Connection = sqlConnection; sqlCommand.CommandType = CommandType.StoredProcedure; sqlCommand.CommandText = cmdString; sqlCommand.Parameters.Add("@FacultyName",...

Ngày tải lên: 14/12/2013, 15:15

... OracleCommand oraCommand = new OracleCommand(cmdStr ing, oraConnection); oraCommand.CommandType = CommandType.StoredProcedure; oraCommand.Parameters.Add(paramCourseID); oraCommand.Parameters.Add(paramCourseInfo); ... 840 Chapter 9 ASP .NET Web Services 3. Open the App _Code folder and change the name of our derived class fi le from SQLSelectResult.cs to OracleSelectResult.cs . 4. Open the App _Code folder and change ... Solution Explorer window and perform the following modifi cations: • Change CodeBehind= " ~ /App _Code/ WebServiceSQLSelect.cs " to CodeBehind= " ~ /App _Code/ WebServiceOracleSelect.cs...

Ngày tải lên: 14/12/2013, 15:15