update the user interface in a multithreaded application

... and Windows ME, include this information The GetCommandLineArgs method returns a string array containing the command-line arguments This array can be processed in the same way as the string array ... each user can access only their own user- based key containers However, any user of a machine can access a machine-based container By default, the Strong Name tool uses machine-based key containers, ... static int Main(string[] args); At runtime, the args argument will contain a string for each value entered on the command line after your application s name Unlike C and C++, the application s name...

Ngày tải lên: 24/01/2014, 19:46

... representing the operating system process you want to terminate For Windowsbased applications, call Process.CloseMainWindow to send a close message to the application s main window For Windows-based applications ... TraceMsg("Starting new thread."); 171 CHAPTER ■ THREADS, PROCESSES, AND SYNCHRONIZATION // Start the new thread and pass the ThreadStartData object // containing the initialization data thread.Start(config); ... pass initialization data to a new thread private class ThreadStartData { public ThreadStartData(int iterations, string message, int delay) { this.iterations = iterations; 170 CHAPTER ■ THREADS,...

Ngày tải lên: 18/06/2014, 16:20

... that these classes use the XML serialization attributes to rename element names (using Pascal casing in the class member names and camel casing in the XML tag names), indicate data types that are ... Correctly update the user interface in a multithreaded application (recipe 7-19) • Display web-based information within your Windows application and allow users to browse the Web from within your application ... the XslCompiledTransform class The following code shows a Windows-based application that programmatically applies the transformation and then displays the transformed file in a window using the...

Ngày tải lên: 18/06/2014, 16:20

... before they can interact again with the rest of the application Calling Window.Show will display a modeless window, allowing the user to interact with the new window as well as the rest of the application ... reference and instantiate the class the same as you would any other class Calling Window.ShowDialog will display the window modally, meaning that the user can interact with only that window and must ... of the form to true and shows an animation of an image alternately growing and shrinking on the page The drawing logic takes place in the Form.Paint event handler, and a timer invalidates the...

Ngày tải lên: 18/06/2014, 16:20

... representing data rows from the database The SqlDataAdapter class acts as the bridge between the database and the DataSet, allowing you to populate the DataSet with data and write back any changes to the ... System.String Data in table Data Eastern Data Western Data Northern Data Southern Data in (modified) table Data North Eastern Data Western Data Northern Data Southern Data Central Main method ... contained within—read and modify data as required Call the SqlDataAdapter .Update method to write any changes back to the database To create a new row in a table, call the DataTable.NewRow instance...

Ngày tải lên: 18/06/2014, 16:20

... CurrentPrincipal of the Thread class contains an IPrincipal instance representing the user on whose behalf the managed thread is running At the operating system level, each thread also has an associated Windows ... domains not have default principals You can set the default principal of an application domain by calling the SetThreadPrincipal method on a System.AppDomain object that represents the application ... application domain to PrincipalPolicy.WindowsPrincipal (as shown here) to obtain Windows user information // Obtain a reference to the current application domain AppDomain appDomain = System.AppDomain.CurrentDomain;...

Ngày tải lên: 18/06/2014, 16:20

... be the same as MachineName if the user has logged in on a machine account instead of a domain account UserInteractive Gets a bool indicating whether the application is running in user interactive ... to covariance in order to handle parameters, you must use the in keyword, either in a separate interface or as a different type in the same interface for example: public interface IMyInterface

Ngày tải lên: 18/06/2014, 16:20

... image and shape have the same aspect ratios Fill The default behavior Scale the image to fit the shape exactly without maintaining the original aspect ratio of the source image When using None, ... gradient is repeated in the original order The RadialGradientBrush is similar in behavior to the LinearGradientBrush except that it has an elliptical gradient axis that radiates out from a defined ... anything that lies outside the area Where the gradient does not completely fill the area, WPF by default fills the remaining area with the final color in the gradient You can change this behavior...

Ngày tải lên: 18/06/2014, 16:20

... before they can interact again with the rest of the application Calling Window.Show will display a modeless window, allowing the user to interact with the new window as well as the rest of the application ... reference and instantiate the class the same as you would any other class Calling Window.ShowDialog will display the window modally, meaning that the user can interact with only that window and must ... of the form to true and shows an animation of an image alternately growing and shrinking on the page The drawing logic takes place in the Form.Paint event handler, and a timer invalidates the...

Ngày tải lên: 20/06/2014, 08:20

... representing data rows from the database The SqlDataAdapter class acts as the bridge between the database and the DataSet, allowing you to populate the DataSet with data and write back any changes to the ... System.String Data in table Data Eastern Data Western Data Northern Data Southern Data in (modified) table Data North Eastern Data Western Data Northern Data Southern Data Central Main method ... contained within—read and modify data as required Call the SqlDataAdapter .Update method to write any changes back to the database To create a new row in a table, call the DataTable.NewRow instance...

Ngày tải lên: 20/06/2014, 08:20

... CurrentPrincipal of the Thread class contains an IPrincipal instance representing the user on whose behalf the managed thread is running At the operating system level, each thread also has an associated Windows ... domains not have default principals You can set the default principal of an application domain by calling the SetThreadPrincipal method on a System.AppDomain object that represents the application ... application domain to PrincipalPolicy.WindowsPrincipal (as shown here) to obtain Windows user information // Obtain a reference to the current application domain AppDomain appDomain = System.AppDomain.CurrentDomain;...

Ngày tải lên: 20/06/2014, 08:20

... be the same as MachineName if the user has logged in on a machine account instead of a domain account UserInteractive Gets a bool indicating whether the application is running in user interactive ... to covariance in order to handle parameters, you must use the in keyword, either in a separate interface or as a different type in the same interface for example: public interface IMyInterface

Ngày tải lên: 20/06/2014, 08:20

... representing the operating system process you want to terminate For Windowsbased applications, call Process.CloseMainWindow to send a close message to the application s main window For Windows-based applications ... TraceMsg("Starting new thread."); 171 CHAPTER ■ THREADS, PROCESSES, AND SYNCHRONIZATION // Start the new thread and pass the ThreadStartData object // containing the initialization data thread.Start(config); ... pass initialization data to a new thread private class ThreadStartData { public ThreadStartData(int iterations, string message, int delay) { this.iterations = iterations; 170 CHAPTER ■ THREADS,...

Ngày tải lên: 20/06/2014, 08:20

... culture-related information These classes are useful in writing globalized applications Within this namespace, the CultureInfo class represents information about a specific culture and is used in culture-specific ... store it in a database on the server and store it to a session variable when the client logs in or on an ad-hoc basis No matter how the culture information is stored, it needs to be made available ... CultureInfo.CurrentCulture.EnglishName; cultureNativeNameLabel.Text = CultureInfo.CurrentCulture.NativeName; } // Sample data that might come from a database // displayed according to culture set by user dateLabel.Text = DateTime.Now.ToString("D");...

Ngày tải lên: 28/10/2013, 18:15

... implement these controls Create the user interface Click the Toolbox tab that appears to the left of the form in the Design View The Toolbox appears, partially obscuring the form and displaying the various ... 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 ... Label, and Button classes o The namespace Visual Studio 2005 has used the name of the project as the name of the toplevel namespace: namespace WinFormHello { } o A class Visual Studio 2005 has...

Ngày tải lên: 24/12/2013, 09:16

... DataView 410 Searching Data in a DataView 410 Navigating Related Data in a DataView 411 Working with DataView Events 411 Setting the DataTable Object’s Default Table Views Using a DataViewManager ... Creating and Using DataView Objects 408 Creating DataView Objects 408 Sorting and Filtering Data Using a DataView 409 Viewing Data Using a DataView 409 Modifying the Data in a ... user interface (UI) for a Windows Forms application by using standard controls Integrate data in a Windows Forms application Implement printing and reporting functionality in a Windows Forms application...

Ngày tải lên: 06/08/2013, 17:55

... applications • Users currently using an application or leaving an application run- ning, preventing the administrators from being able to install an update to that application • Installing the application ... means it is a graphical user interface application running on the users’ local machine desktops It is an application whose windows are presented directly on the screen by the OS, taking advantage ... any harm to the local machine, including other applications installed on the machine and user data stored on the machine There are certainly ways that those protections can be violated, but short...

Ngày tải lên: 06/07/2014, 15:28

... outputs a binary stream containing the image from the database Create a SQL statement to retrieve the required image from the database and retrieve the image using a DataReader A DataTable or DataSet ... output the image as a binary stream The BinaryWrite( ) method of the HttpResponse object writes a stream of binary characters to the HTTP output stream rather than a textual stream Response.BinaryWrite((byte[])dr["Photo"]); ... the Image control in the web page that the client sees to the web page that outputs the image from the database as a binary stream This example uses the modified version of Northwind, where the...

Ngày tải lên: 28/10/2013, 18:15

... dataGrid.DataSource = CreateDataSource( ); dataGrid.DataKeyField = "Id"; dataGrid.DataBind( ); } private DataTable CreateDataSource( ) { DataTable dt = new DataTable(TABLENAME); // Create the DataAdapter ... row into edit mode and calls BindDataGrid( ) to refresh the grid DataGrid.UpdateCommand Finds and updates the specified row in the data cached in the Session variable and calls the UpdateDataSource( ... persist the change back to the data source BindDataGrid( ) is called to refresh the grid Insert Button.Click Inserts a new row into the data cached in the Session variable and calls the UpdateDataSource(...

Ngày tải lên: 26/01/2014, 10:20

... styles to the DataGrid The MappingName property of the DataGridTableStyle is set to the DataSource The MappingName of each DataGridColumnStyle object must be associated with the name of a DataColumn ... grid dataGrid.DataSource = dt.DefaultView; } private void updateButton_Click(object sender, System.EventArgs e) { // Update the data using the DataAdapter da .Update( dt); } Discussion The TableStyles ... inherits from the abstract DataGridColumnStyle class It defines the attributes, display format, and behavior of cells in a DataGrid column representing a Boolean value At runtime, each cell in the column...

Ngày tải lên: 20/10/2013, 12:15