drawing in a windows form
Creating Custom Columns in a Windows Forms DataGrid
Ngày tải lên :
20/10/2013, 12:15
... duplicate mapping names are used.
The DataGridTextBoxColumn class inherits from the abstract DataGridColumnStyle
class. It defines the attributes, display format, and behavior of cells in a DataGrid ... to the DataSource. The
MappingName of each DataGridColumnStyle object must be associated with the name of
a DataColumn to synchronize the DataGrid display column with the data column. An
exception ... column.
At runtime, each cell in the column hosts a DataGridTextBox control.
The DataGridBoolColumn inherits from the abstract DataGridColumnStyle class. It
defines the attributes, display format,...
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Displaying an Image from a Database in a Windows Forms Control
Ngày tải lên :
28/10/2013, 18:15
... 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 ... 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 ... returned
depending on the type of data source:
•
The CurrencyManager class inherits from the BindingManagerBase
class and maintains a pointer for the current item in a data source that
implements...
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Binding a Group of Radio Buttons in a Windows Form
Ngày tải lên :
07/11/2013, 13:15
... back to
the database. The DataAdapter is used to fill a DataTable in a new DataSet with
the schema and data from TBL0709.
The text boxes displaying the data for the fields in the record are ... contains seven event handlers:
Form. Load
Sets up the sample by creating a DataAdapter with the logic to select all records
from table TBL0709 in the sample database and to update changes made ... Create the DataAdapter.
da = new SqlDataAdapter(selectCommand,
ConfigurationSettings.AppSettings["Sql_ConnectString"]);
da.UpdateCommand = new SqlCommand(updateCommand,
da.SelectCommand.Connection);...
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Populating a Windows Forms ComboBox
Ngày tải lên :
20/10/2013, 12:15
... TBL0709 in the sample database and to update changes made back to
the database. The DataAdapter is used to fill a DataTable in a new DataSet with
the schema and data from TBL0709. A DataTable is filled ... SqlDataAdapter daCB = new SqlDataAdapter(sqlText,
da.SelectCommand.Connection);
DataTable comboBoxSourceTable =
new DataTable(TABLENAME_COMBOBOXSOURCE);
daCB.FillSchema(comboBoxSourceTable, ... the
BindingManagerBase is obtained for the TBL0709 table in the DataSet.
Update Button.Click
Ends the current edit and uses the DataAdapter created in the Form. Load event
handler to update...
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Module 8: Implementing Security in a Windows 2000 Network
Ngày tải lên :
22/10/2013, 16:15
... action, and the date and time of the action. Show the
events that Windows 2000 can audit and explain what the event indicates.
Explain how to plan an audit strategy and determine which events to audit. ... Configuration and Analysis, set a working database, and then
import security templates into the database.
2. To begin the analysis, right-click Security Configuration and Analysis,
and then click Analyze ... Implementing an Audit Policy
? What Is Auditing?
? Events to Audit
? Planning an Audit Policy
? Setting Up an Audit Policy
? Auditing Access to Resources
Security auditing is a feature of Windows...
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Localizing Client-Side Data in a Web Forms Application
Ngày tải lên :
28/10/2013, 18:15
...
Example 3-5. File: ADOCookbookCS0305.aspx.cs
// Namespaces, variables, and constants
using System;
using System.Threading;
using System.Globalization;
using System.Data;
using System.Data.SqlClient; ... server's settings.
The sample code-behind for the Web Forms page contains one event handler and a single
method:
Form. Load
Creates the CultureInformation object based on the user's settings. ... user's culture.
[ Team LiB ]
[ Team LiB ]
Recipe 3.5 Localizing Client-Side Data in a Web Forms Application
Problem
You need to format dates and currency values according to the culture...
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Displaying an Image from a Database in a Web Forms Control
Ngày tải lên :
28/10/2013, 18:15
... statement to retrieve the required image from 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 ... 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 ...
Rendering an image from a database in a Web Forms Image control is easy to do, but not
straightforward. Fortunately, it is much simpler with ASP.NET than it was in ASP.
Two web pages are required:...
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Tài liệu Using the Data Form Wizard to Create a Windows Form phần 1 pdf
Ngày tải lên :
24/12/2013, 01:17
... Using the Data Form Wizard to Create a Windows Form
In this section, you'll use the VS .NET Data Form Wizard to create a Windows
application that accesses both the Customers and Orders ...
2. In the New Project dialog box, select Empty Project, and enter
DataFormWindowsApplication in the Name field. Because you'll be adding a
When you move to a new row in the Customers table, ... select the database tables or views you want to use in your form. The area on
the bottom left of the dialog box shows the tables and views you can access using your
form. The area on the bottom...
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Tài liệu Using the Data Form Wizard to Create a Windows Form phần 2 doc
Ngày tải lên :
24/12/2013, 01:17
... your form. To
do this, select View ➣ Code, and add the following Main() method inside your
MyDataForm class (a good place to add Main() would be at the start of your
MyDataForm class after ... display style for the rows (also known as records) in the parent table
that are displayed in your form. You can display the rows in a grid, or you can
display each column using a separate control. ... bracket {):
public class MyDataForm : System .Windows. Forms .Form
{
public static void Main()
{
Application.Run(new MyDataForm());
}
This code creates a new object of the MyDataForm...
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Tài liệu Using Indexers in a Windows Application doc
Ngày tải lên :
24/12/2013, 09:16
... Name();
}
}
}
3. Add a second public read-only indexer to the PhoneBook class that returns a
PhoneNumber and accepts a single Name parameter. Implement this indexer in the
same way as ... performs a search through an array, returning the index
of the first item in the array that matches. The first argument to IndexOf is the
array to search through (phoneNumbers). The second argument ... and then discards the old arrays.
Write the indexers
1. In the PhoneBook.cs source file, add a public read-only indexer that returns a
Name and accepts a single PhoneNumber parameter to the...
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Tài liệu Creating a Windows Forms Application docx
Ngày tải lên :
24/12/2013, 09:16
...
namespace WinFormHello
{
}
o
A class
Visual Studio 2005 has written a class called Form1 inside the WinForm
Hello namespace:
namespace WinFormHello
{
partial class Form1
In the following ...
In a Windows Forms application, Visual Studio 2005 actually generates a
potentially large amount of code. This code performs operations such as
creating and displaying the form when the application ... everything you'll need
to create graphical Windows applications. You can design the form- based user interface
of a Windows application interactively by using the Visual Designer. Visual Studio...
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Tài liệu Using a DataView to Control Edits, Deletions, or Additions in Windows Forms pdf
Ngày tải lên :
14/12/2013, 18:16
... the data in the control. Binding a DataGrid to a DataTable binds to the default view of the
underlying DataTable.
The DataView class represents a view of the DataTable that can be data bound ... editing, deleting, or adding data in a Windows
Forms application.
Solution
Bind a DataView to Windows Forms controls.
The sample code contains four event handlers:
Form. Load
Sets up the sample ... sets a Boolean value indicating whether deletes are allowed
AllowEdit Gets or sets a Boolean value indicating whether edits are allowed
AllowNew Gets or sets a Boolean value indicating whether...
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Pro .NET 2.0 Windows Forms and Custom Controls in C#
Ngày tải lên :
19/10/2013, 21:15
... until an entire
company agrees that an application looks attractive. However, developers who are involved in
creating and maintaining sophisticated applications realize that there is another ... to a more elegant approach, you need to stop thinking in terms of windows and controls
and start looking at a user interface as an entire interrelated framework.
In this chapter, you’ll start ... add a new interface.
1
• Interfaces allow polymorphism. This means many different classes that use the same
interface can be treated the same way. In a very real sense, an interface acts like a...
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Tài liệu Use a Single Windows Form to Update Multiple Lookup Tables Just about every database application pptx
Ngày tải lên :
14/12/2013, 20:16
... e As System.EventArgs) Handles
lstLookupTables.SelectedIndexChanged
Dim dtData As New DataTable()
Try
' Update the data adapter and data table to reflect the new data,
' ...
SelectedIndexChanged event. This routine assigns the new table chosen in
lstLookupTables as the Select command for the modaLookupData data adapter.
The data table called dtData is then filled and ...
One interesting thing of note is the way that the DataTable object is
derived in this routine. Instead of creating it from a DataSet or
DataAdapter object, we get it from the DataGrid object,...
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