drawing in a windows form

... 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,...

Ngày tải lên: 20/10/2013, 12:15

... 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...

Ngày tải lên: 28/10/2013, 18:15

... 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);...

Ngày tải lên: 07/11/2013, 13:15

... 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...

Ngày tải lên: 20/10/2013, 12:15

... 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...

Ngày tải lên: 22/10/2013, 16:15

... 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...

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:...

Ngày tải lên: 28/10/2013, 18:15

... 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...

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...

Ngày tải lên: 24/12/2013, 01:17

... 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...

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...

Ngày tải lên: 24/12/2013, 09:16

Ngày tải lên: 26/01/2014, 10:20

Ngày tải lên: 26/01/2014, 11:20

... 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...

Ngày tải lên: 14/12/2013, 18:16

Ngày tải lên: 25/03/2014, 10:38

Ngày tải lên: 05/09/2013, 10:15

... 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...

Ngày tải lên: 19/10/2013, 21:15

... 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,...

Ngày tải lên: 14/12/2013, 20:16

Ngày tải lên: 24/12/2013, 09:16