... 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 adatabase 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. ...
... Team LiB ]
[ Team LiB ]
Recipe 1.4 Connectingtoa Secured Access Database
Problem
You want to connect toa 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 toa Microsoft Access database secured with user-
level security and a workgroup file using ... defined by ADO.NET. To open adatabase secured by
Microsoft Access user-level security, use the Jet OLEDB:System Database attribute in
the connection string to specify the path and filename...
... display an image from adatabase column in an ASP.NET control.
Solution
Fill an ASP.NET Image control from adatabase field by pointing the ImageUrl property
of an Image control toa web page ... 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 ... 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...
... 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 ... Databaseina Windows Forms Control
Problem
You need to display an image from adatabaseina Windows Forms control.
Solution
Read the image into a byte array and load it directly into a PictureBox ... returned
depending on the type of data source:
•
The CurrencyManager class inherits from the BindingManagerBase
class and maintains a pointer for the current item ina data source that
implements...
...
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: ...
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 ... 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...
... 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 Connectingtoa Named Instance of SQL Server or Microsoft Data
Engine (MSDE)
Problem
You want to connect toa named instance of a SQL Server or Microsoft Data Engine ... need to understand what a SQL Server or MSDE named instance is and how to
connect to one. The sample code contains a single event handler:
Connect Button.Click
Creates and opens a connection to...
... 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 Connectingtoa Text File
Problem
You want to use ADO.NET to access data ... Namespaces, variables, and constants
using System;
using System.Configuration;
using System.Windows.Forms;
using System.Data;
using System.Data.OleDb;
// . . .
// Create the data adapter...
... wake at 6 a. m., but nap for two hours or so in the early afternoon. Thus the influence on one's
sleep pattern is worthy of consideration when choosing an occupation.
...
... medicine, with the faculty members at each medical
school focusing on a separate area: “examination and
standards in examination,”“e-learning in medicine,”
“evaluation of teaching,”“practical year,” ... necessary decisions
• know and be able to apply legal regulations
• be able to establish contact with a patient in an
appropriate and empathic manner and have exam-
ined, under supervision, at least ... States,
Canada, Japan, Australia, and New Zealand. They found
only limited agreement on curricula content. Goals
regarded as relevant were evaluating children and
families, understanding normal...
... hand in marriage:
Pet: And you, good Sir! Pray, have you got a daughter Calld Katherina, fair and
virtuous?
Bap: I have a daughter, sir, calls Katherina. (61: 69)
By confirming that he has a ... general strategy in conversation analysis is to
examine actual verbal interactions in order to bring the structural properties of talk. The
descriptive units that the conversation analysis has been ... observe that a conversation is a string of at least two turns which are
produced by different speakers and are related to each other in such a way they form a pair
type. They call them an adjacency...
...
-9-
tức là vỏ âm thanh, vỏ ngữ âm c a từ, hoặc là từ ngữ âm; thứ hai, sự vật được gọi
bằng từ đó; thứ ba, ý ngh a mà từ gây ra trong ý thức chúng ta. Tất cả ba yếu tố
này gắn với nhau…” [71; 34].
Tên ... thông qua các tài liệu có được c a các tác giả đi trước, qua thực tiễn lời
ăn tiếng nói hằng ngày c a người dân đ a phương, luận văn nhằm tìm hiểu về
định danh từ vựng c a PNNB, đ a ra những ... niệm “sự cố định
(hay gắn) cho một kí hiệu ngôn ngữ một khái niệm – biểu niệm (signifikat) phản
-47-
đ a lí tự nhiên Nam Bộ mà chúng ta đang quan niệm hiện nay. Đây cũng là quan
điểm trong việc...
... 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 ina DataSet to the databasein Chapter ...
ConnectionString property, as shown in Figure 6.11
.
Using a DataGrid Control to Access aDatabase
In this section, you'll learn how to use a DataGrid control to access the rows inadatabase
table. ... need to create a DataSet object. You use a DataSet object toa store local copy
of the information stored in the database. A DataSet object can represent database
structures such as tables,...
... ADO.NET automatically stores database connections ina 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 toa SQL Server database
*/
using System;
using System.Data;
using System.Data.SqlClient;
class MySqlConnection
{
public static void Main()
{
// formulate a string ... string containing the details of the
// database connection
string connectionString =
"server=localhost ;database= Northwind;uid=sa;pwd=sa";
// create a SqlConnection object to connect...