modifying data using a strongly typed dataset
Tài liệu Modifying Data Using a Strongly Typed DataSet pptx
Ngày tải lên :
24/12/2013, 01:17
... Data Using a Strongly Typed DataSet
In Chapter 10
, you saw how to create and use a strongly typed DataSet class named
MyDataSet. You can use objects of this class to represent the Customers table ... table and rows
from that table. In this section, you'll see how to modify data using a strongly typed
object of the MyDataSet class.
Note One of the features of a strongly typed DataSet ... and Address columns from the Customers table
sqlConnection1.Open();
sqlDataAdapter1.Fill(myDataSet1, "Customers");
// get the Customers DataTable
MyDataSet.CustomersDataTable...
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Tài liệu Replacing Null Values in a Strongly Typed DataSet ppt
Ngày tải lên :
14/12/2013, 18:16
... ds.Categories)
[ Team LiB ]
Recipe 2.19 Replacing Null Values in a Strongly Typed DataSet
Problem
When a column in a database has a null value, you want the value in the DataSet to be a ... Create the typed DataSet without null annotation.
CategoriesDS_AnnotatedNull ds = new CategoriesDS_AnnotatedNull( );
// Fill the Categories table within DataSet.
da.Fill(ds, CATEGORIES_TABLE); ... Create the DataAdapter.
SqlDataAdapter da = new SqlDataAdapter("SELECT * FROM Categories",
ConfigurationSettings.AppSettings["Sql_ConnectString"]);
if (annotatedRadioButton.Checked)...
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Tài liệu Controlling the Names Used in a Strongly Typed DataSet pdf
Ngày tải lên :
24/12/2013, 05:15
... name
Annotatio
n
DataTable TableNameDataTable typedPlural
DataTable
methods
NewTableNameRowAddTableNameRowDeleteTableNa
meRow
typedName
DataRowCollect
ion
TableName
typedPlural
DataRow TableNameRow ... typed DataSet and the default names
and available annotations for each.
Table 2-18. Default values and available annotations for elements of strongly typed
DataSet objects
Element Default name ... TableNameRow typedName
DataColumn DataTable.ColumnNameColumnDataRow.ColumnName typedName
Property
PropertyName
typedName
Child accessor GetChildTableNameRows
typedChildr
en
Parent accessor TableNameRow...
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Tài liệu Creating a Strongly Typed DataSet pdf
Ngày tải lên :
21/01/2014, 11:20
... typed DataSet class contains, in addition to a single class extending the
DataSet class, three classes for each table in the DataSet extending each of the DataTable,
DataRow, and DataRowChangeEvent ... or a command line approach.
Discussion
A strongly typed DataSet is a collection of classes that inherit from and extend the
DataSet, DataTable, and DataRow classes, and provide additional ...
data source changes. Applications using these strongly typed DataSet objects will
need to be rebuilt with a reference to the new strongly typed DataSet. With an
untyped DataSet, as long as...
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Tài liệu Reading a Column Value Using Strongly Typed DataSet Classes pptx
Ngày tải lên :
21/01/2014, 07:20
... System .Data. SqlClient.SqlDataAdapter mySqlDataAdapter =
new System .Data. SqlClient.SqlDataAdapter();
mySqlDataAdapter.SelectCommand = mySqlCommand;
MyDataSet myDataSet = new MyDataSet();
sqlConnection1.Open(); ... mySqlDataAdapter.Fill(myDataSet, "Customers");
sqlConnection1.Close();
MyDataSet.CustomersDataTable myDataTable = myDataSet.Customers;
foreach (MyDataSet.CustomersRow myDataRow ... consider using strongly typed DataSet objects. On the other hand,
if your database tables change a lot, you should probably avoid them because you'll need
to regenerate the strongly typed DataSet...
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Tài liệu Updating Server Data Using a Web Service pptx
Ngày tải lên :
24/12/2013, 05:15
... tables.
UpdateOrders( )
Takes a DataSet argument containing the changes made to the DataSet created by
the LoadOrders( ) method, creates two DataAdapter objects with
CommandBuilder generated ... bool UpdateOrders (DataSet ds)
{
// Create the DataAdapters for order and order details tables.
SqlDataAdapter daOrders =
new SqlDataAdapter("SELECT * FROM Orders",
ConfigurationSettings.AppSettings["DataConnectString"]); ...
Use a DataSet object.
The XML web service code contains two methods:
LoadOrders( )
Creates and returns a DataSet containing the Orders and Order Details tables from
Northwind and a DataRelation...
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Tài liệu Module 3: Using a Conceptual Design for Data Requirements docx
Ngày tải lên :
10/12/2013, 17:15
... Identifying
Data- Related Use Cases
and Data Requirements
Module 3: Using a
Conceptual Design for Data
Requirements
Activity 3.2: Relating Data
Requirements to
Conceptual Design
Module 3: Using a Conceptual ... is directly traceable to an actor and an
object within a use case.
Nonfunctional data requirements
A nonfunctional data requirement more completely describes a functional data
requirement. ... solution has no data
requirements, it has no need for data storage, let alone a logical data
organization.
Determining the functional data requirements from the solution’s use cases
involves...
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Tài liệu Updating a Database Using a DataSet doc
Ngày tải lên :
15/12/2013, 00:15
... it again. The DataSet in this case
is referred to as a disconnected DataSet as it doesn't maintain an active connection to the
database. Disconnected DataSet objects act as a data cache ... time. Instead, a better approach is to connect to the database, fetch the data into
a DataSet object, and then disconnect again. The user can browse the data in the DataSet
and make any changes ... in applications. You can
modify the data in the DataSet, and later reopen the connection and send the changes
back to the database.
You can manually open a connection to a database by creating...
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Tài liệu Writing and Reading XML Using a DataSet Object ppt
Ngày tải lên :
24/12/2013, 01:17
... "ORDER BY CustomerID";
SqlDataAdapter mySqlDataAdapter = new SqlDataAdapter();
mySqlDataAdapter.SelectCommand = mySqlCommand;
DataSet myDataSet = new DataSet( );
mySqlConnection.Open(); ... "ORDER BY CustomerID";
SqlDataAdapter mySqlDataAdapter = new SqlDataAdapter();
mySqlDataAdapter.SelectCommand = mySqlCommand;
DataSet myDataSet = new DataSet( );
mySqlConnection.Open(); ... Chapter 16
, " ;Using SQL Server's XML Support."
Using the WriteXml() Method
Let's say you have a DataSet object named myDataSet. Assume that myDataSet has a
DataTable that...
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Tài liệu Retrieving Hierarchical Data into a DataSet ppt
Ngày tải lên :
24/12/2013, 05:15
...
[ Team LiB ]
Recipe 2.1 Retrieving Hierarchical Data into a DataSet
Problem
You want to fill a DataSet with parent and related child data, even if the DataSet already
has a schema that ... parent table, Orders, is bound to
a data grid on the form.
Load DataSet Button.Click
Starts by clearing the data from the DataSet and refreshing the data grid.
DataAdapter objects are created ... System.EventArgs e)
{
// Remove all data from the DataSet and refresh the grid.
ds.Clear( );
dataGrid.Refresh( );
// Create parent and child data adapters.
SqlDataAdapter daParent = new SqlDataAdapter("SELECT...
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Tài liệu Instructor Notes Module 3: Using a Conceptual Design for Data Requirements pdf
Ngày tải lên :
17/01/2014, 09:20
... 3, Using a Conceptual Design for Data Requirements”
!
Activity 3.1, “Identifying Data- Related Use Cases and Data Requirements”
!
Activity 3.2, “Relating Data Requirements to Conceptual Design” ... 3: Using a Conceptual Design for Data Requirements
Activities
Activity 3.1: Identifying Data- Related Use Cases and Data
Requirements
In this activity, students will determine data requirements, ... with a systematic method for beginning the
design process by gathering information and then turning that information into
use cases and data requirements. Both functional and nonfunctional data...
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Báo cáo y học: "Prevention of Pleural Adhesions Using a Membrane Containing Polyethylene Glycol "
Ngày tải lên :
25/10/2012, 11:00
...
Prevention of Pleural Adhesions Using a Membrane Containing Polyeth-
ylene Glycol in Rats
Volkan Karacam
1
, Ahmet Onen
2
, Aydin Sanli
2
, Duygu Gurel
3
, Aydanur Kargi
3
, Sami Karapolat
4
, Nezih ... Thorac Cardio-
vasc Surg 2001;121:657-67.
5. Onen A, Sanli A. Surgical treatment of synchronous and meta-
chronous lung cancer. Tur Toraks Der 2004;5:201-7.
6. Tanaka A, Abe T, Matsuura A. Prevention ... thoracoto-
mies, Tanaka et al. demonstrated that adhesions
which develop following thoracotomies may be suc-
cessfully eliminated using hyaluronate-based ab-
sorbable membran in rats [6]. Getman...
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Natural botanical products have a long history in the world and are featured in using a complex
Ngày tải lên :
03/11/2012, 09:54
... They were fed intragastrically (i.g.) daily for 14 and 28 days.
Tumor areas were measured every 7 days using a caliper, and the tumor area was calculated
according to the formula: tumor volume ... Introduction
Natural botanical products have a long history in the world and are featured in using a complex
combination of herbs to treat various diseases (e.g. rheumatoid arthritis, menopausal symptoms, ... apoptotic cells were expressed as the number of apoptotic cells per field.
Statistical analysis
Statistical significance between the treatment groups was analyzed using a two-way statistical...
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Báo cáo y học: "Discriminating between elderly and young using a fractal dimension analysis of centre of pressure"
Ngày tải lên :
03/11/2012, 10:09
... normal then a deviation away from a fractal pattern may be indicative
of a shift towards an unhealthy or less desirable control strategy. The analysis of fractal patterns in gait
and posture data ... considered appropriate.
Recently Parkinsonian patients (PP), spinocerebellar ataxia (SCA) patients, and healthy
participants’ COP were analysed using a more traditional fractal dimension analysis ... method
recorded COP data and analysed COP traces using an image analyser to calculate the fractal dimension
directly from the image, as opposed to a time series data analysis such as in Higuchi’s...
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