connecting to a database in java using netbeans
Tài liệu Connecting to a Password-Protected Access Database ppt
... ex.Message); } resultTextBox.Text = result.ToString( ); } Discussion A Microsoft Access database password requires that users enter a password to obtain access to the database and database ... attributes in addition to those defined by ADO.NET. To open a database secured by a Microsoft Access database password, use the Jet OLEDB :Database Password attribute in the connection string to specify ... is also known as share-level security. A password does not allow groups or users to have distinct levels of access or permissions. Anyone with the password has unrestricted access to the database. ...
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Tài liệu Connecting to a Secured Access Database pptx
... Team LiB ] [ Team LiB ] Recipe 1.4 Connecting to a Secured Access Database Problem You want to connect to a Microsoft Access database that has been secured with user-level security and ... The sample code contains a single event handler: Connect Button.Click Creates and opens a connection to a Microsoft Access database secured with user-level security and a workgroup file using ... defined by ADO.NET. To open a database secured by Microsoft Access user-level security, use the Jet OLEDB:System Database attribute in the connection string to specify the path and filename...
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Displaying an Image from a Database in a Web Forms Control
... the database and retrieve the image using a DataReader. A DataTable or DataSet filled using a DataAdapter can also be used. 3. Set the ContentType property of the HttpResponse object to the ... display an image from a database column in an ASP.NET control. Solution Fill an ASP.NET Image control from a database field by pointing the ImageUrl property of an Image control to a web page ... following steps outline the required tasks: 1. Create a web page that outputs a binary stream containing the image from the database. 2. Create a SQL statement to retrieve the required image...
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Displaying an Image from a Database in a Windows Forms Control
... within the data source, such as a row in a DataTable. The BindingContext class is used to instantiate a BindingManagerBase object and either a CurrencyManager or PropertyManager object is ... Database in a Windows Forms Control Problem You need to display an image from a database in a Windows Forms control. Solution Read the image into a byte array and load it directly into a PictureBox ... constants using System; using System.Configuration; using System.Drawing; using System.Windows.Forms; using System.IO; using System.Data; using System.Data.SqlClient; private DataSet...
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Tài liệu Connecting to a Microsoft Excel Workbook ppt
... Create a SQL SELECT statement referencing a worksheet or a range in an Excel workbook and execute the statement to fill a DataSet using a DataAdapter or to create a DataReader. For example: ... 1-2. Example 1-2. File: ExcelForm.cs // Namespaces, Variables, and Constants using System; using System.Configuration; using System.Data; private OleDbDataAdapter da; private DataTable ... INSERT INTO [MySheet$] (Field1, Field2, Field3) VALUES ('testdata', 1.234, '09/28/1979'); Retrieve data Use either a DataAdapter or a DataReader to retrieve data from an...
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Tài liệu Connecting to a Named Instance of SQL Server or Microsoft Data Engine (MSDE) docx
... File: ConnectNamedInstanceForm.cs // Namespaces, variables, and constants using System; using System.Configuration; using System.Windows.Forms; using System.Text; using System.Data.SqlClient; ... ConfigurationSettings.AppSettings["Sql_Msde_ConnectString"]); Manager and Query Analyzer are also shared. The System.Data.SqlClient class cannot automatically discover the port number of a named instance of SQL Server listening on a port ... Team LiB ] Recipe 1.7 Connecting to a Named Instance of SQL Server or Microsoft Data Engine (MSDE) Problem You want to connect to a named instance of a SQL Server or Microsoft Data Engine...
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Tài liệu Connecting to a Text File pptx
... Namespaces, variables, and constants using System; using System.Configuration; using System.Windows.Forms; using System.Data; using System.Data.OleDb; // . . . // Create the data adapter ... provider can read records from and insert records into a text file data source. The Jet database engine can access other database file formats through Indexed Sequential Access Method (ISAM) drivers ... schema.ini file provides the following schema information about the data in the text file: [ Team LiB ] Recipe 1.19 Connecting to a Text File Problem You want to use ADO.NET to access data...
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Tài liệu Storing XML to a Database Field doc
... demonstrates how to store XML data in a text field of a database table and subsequently read it into an XmlDocument using the LoadXml( ) method. Standard database access techniques using a DataAdapter ... System.Configuration; using System.Windows.Forms; using System.IO; using System.Xml; using System.Data; using System.Data.SqlClient; private DataTable dt; private SqlDataAdapter da; private ... // Create the data adapter. da = new SqlDataAdapter(selectText, ConfigurationSettings.AppSettings["Sql_ConnectString"]); da.UpdateCommand = new SqlCommand(updateText, da.SelectCommand.Connection);...
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Tài liệu Adding Tables to a Database pdf
... Team LiB ] Recipe 10.8 Adding Tables to a Database Problem You need to add a table to an existing database. Solution Use the CREATE TABLE statement. The sample code executes the DDL statement using ... statement using the ExecuteNonQuery( ) method of the Command object to add a table to an existing SQL Server database. The C# code is shown in Example 10-8. Example 10-8. File: AddTableToDatabaseForm.cs ... File: AddTableToDatabaseForm.cs // Namespaces, variables, and constants using System; using System.Configuration; using System.Data; using System.Data.SqlClient; // . . . SqlConnection...
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Using a DataGrid Control to Access a Database
... Server and a DataSet object. You'll learn the details on how to pull rows from the database into a DataSet in Chapter 10, and how to push changes made in a DataSet to the database in Chapter ... ConnectionString property, as shown in Figure 6.11. Using a DataGrid Control to Access a Database In this section, you'll learn how to use a DataGrid control to access the rows in a database table. ... need to create a DataSet object. You use a DataSet object to a store local copy of the information stored in the database. A DataSet object can represent database structures such as tables,...
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Using a SqlConnection Object to Connect to a SQL Server Database phần 1
... ADO.NET automatically stores database connections in a pool. Connection pooling offers a great performance improvement because you don't have to wait for a brand new connection to the database ... object to connect to a SQL Server database */ using System; using System.Data; using System.Data.SqlClient; class MySqlConnection { public static void Main() { // formulate a string ... using System; using System.Data; using System.Data.SqlClient; class ConnectionPooling { public static void Main() { // create a SqlConnection object to connect to the database, ...
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Tài liệu Using a SqlConnection Object to Connect to a SQL Server Database phần 2 doc
... /* StateChange.cs illustrates how to use the StateChange event */ using System; using System.Data; using System.Data.SqlClient; class StateChange { // define the StateChangeHandler() ... StateChangeEventArgs class. The following example defines a method named StateChangeHandler to handle the StateChange event. You'll notice that the second parameter to this method is a StateChangeEventArgs ... SqlConnection("server=localhost ;database= Northwind;uid=sa;pwd=sa"); // monitor the StateChange event using the StateChangeHandler() method mySqlConnection.StateChange += new StateChangeEventHandler(StateChangeHandler);...
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Tài liệu Using a Single Stored Procedure to Update Multiple Changes to a SQL Server Database pdf
... SP0811_Update Used to update the table TBL0811 with the changes made to the DataSet passed in as an NText input parameter @data. The parameters @data and @datadeleted contain an XML representation ... System.IO; [ Team LiB ] Recipe 8.11 Using a Single Stored Procedure to Update Multiple Changes to a SQL Server Database Problem You need to update a SQL Server 2000 database with changes to multiple ... results in the return of a handle to an internal representation to an empty XML document. xpathNamespaces A text parameter that specifies the namespace declarations used in row and column XPath...
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Tài liệu Using XPath to Query Data in a DataSet doc
... W3C XML Path Language (XPath) is a navigation language used to select nodes from an XML Document. It is defined by W3 as a standard navigation language. The specification can be found at http://www.w3.org/TR/xpath. ... Form.Load Sets up the sample by creating a DataSet containing the Orders table and Order Details table from Northwind and a nested relation between the two tables. Go Button.Click Executes an ... containing the Order Details. The C# code is shown in Example 8-9. Example 8-9. File: XPathQueryForm.cs // Namespaces, variables, and constants using System; using System.Configuration; using...
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