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To understand the currentTarget property, let s recall our discussion about event propagation. We said that DOM events are propagated: the event is first dispatched from the target element, which is the origin of the event, and then it s fired for each of the parent elements of the target. One limitation of the IE event model is that we don t have a way to check whether our event handler was called directly, or whether it was called through propagation. The global event object contains a srcElement that points to the event target, but there aren t any properties that tell us the current element whose event is currently being dispatched. Recall our example: <html> <head> <script src="mootools.js"></script> <script> window.addEvent('domready', function(){ // the image $$('img').attachEvent('onclick', function(){ c# code 39 reader C# Imaging - Read Linear Code 39 in C#.NET - RasterEdge.com
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The C# .NET Code 39 Reader Control SDK is a single DLL file that supports scanning and interpreting Code 39 barcode in the C# .NET applications. This C#. WHERE e.[EmployeeID] = @EmployeeID UNION ALL SELECT e.[EmployeeID], e.[ManagerID], c.[FirstName], c.[LastName], e.[Title], [RecursionLevel] + 1 -- Join recursive member to anchor FROM [HumanResources].[Employee] e INNER JOIN [EMP_cte] ON e.[EmployeeID] = [EMP_cte].[ManagerID] INNER JOIN [Person].[Contact] c ON e.[ContactID] = c.[ContactID] ) -- Join back to Employee to return the manager name SELECT [EMP_cte].[RecursionLevel], [EMP_cte].[EmployeeID], [EMP_cte].[FirstName], [EMP_cte].[LastName], [EMP_cte].[ManagerID], c.[FirstName] AS 'ManagerFirstName', c.[LastName] AS 'ManagerLastName' -- Outer select from the CTE FROM [EMP_cte] INNER JOIN [HumanResources].[Employee] e ON [EMP_cte].[ManagerID] = e.[EmployeeID] INNER JOIN [Person].[Contact] c ON e.[ContactID] = c.[ContactID] ORDER BY [RecursionLevel], [ManagerID], [EmployeeID] OPTION (MAXRECURSION 25) END; Now that you have the stored procedure mapped and set up in your DataContext, it is time to write some code to use it. Instead of giving you an elaborate example, let s just keep it simple and say that your HR people want a button to display the reporting structure. In this example, you are going to create a new form with a DataGridView control and you are going to bind the results directly to the grid. Listing 4-4 has two blocks of code that can be used to populate your DataGrid. In the LTS form, I have added a new button that retrieves the EmployeeID by the Last Name text box, and then passes it to a new form, EmployeeHierarchy, that has a DataGridView. The DataGridView, called gridEmpHi, then calls the uspGetEmployeeManagers sproc and binds to a BindingSource to populate the grid (see Figure 4-5). Listing 4-4. Code to Call a Sproc and Populate a DataGridView private void btnReporting_Click(object sender, EventArgs e) { Employee emp = db.Employees.Single(d => d.Contact.LastName == txtLastName.Text); EmployeeHierarchy eh = new EmployeeHierarchy(); eh.Show(); eh.BindGrid(emp.EmployeeID); } birt pdf 417, microsoft word 2010 qr code, word schriftart ean 13, birt ean 13, microsoft word code 39 font, birt gs1 128 c# code 39 reader C# Code 39 Barcode Scanner DLL - Decode Barcode in C#.NET ...
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Free to download .NET, C#, VB.NET barcode reader app for Code 39; C# Code 39 recognition SDK; VB.NET Code 39 recognition SDK. In the client code we see the Chain of Responsibility pattern at work. We test the effectiveness of the design pattern by instructing the client code to submit four customer requirements to the chain. Two of the requirements (Commercial Corporates and Dealers) have specialist customer representatives (StaffLink and ManagerLink), which deal with the appropriate customer requirement. Also note that there are two customer requirements from two previously unknown customer groups (Not For Profit Corporates and Government Agency), which by default are attended to by the SeniorManager. class Client { static void Main(string[] args) { //Build the links Link staff = new StaffLink(); Link manager = new ManagerLink(); Link seniorManager = new SeniorManagerLink(); //Assign chain hierarchy staff.NextInChain(manager); manager.NextInChain(seniorManager); c# code 39 reader .NET Barcode Scanner Library API for .NET Barcode Reading and ...
Mar 6, 2019 · NET Read Barcode from Image Using Barcode Scanner API for C#, VB.NET. .NET Barcode Scanner Library introduction, Barcode Scanner ... c# code 39 reader Barcode Reader. Free Online Web Application
Read Code39, Code128, PDF417, DataMatrix, QR, and other barcodes from TIF, ... Decode barcodes in C#, VB, Java, C\C++, Delphi, PHP and other languages. console.log('img'); }); // the body element $$('body').attachEvent('onclick', function(){ console.log('body'); }); // the html element $$('html').attachEvent('onclick', function(){ console.log('html'); }); // the document element $$(document).attachEvent('onclick', function(){ console.log('document'); }); }); </head> <body> <img src="hello.png"> </body> </html> Here if we click on the <img> element, we get the console output img , body , html , then document . If we click anywhere inside the page, but outside the <img> element, we ll still get an output: body , html , document . For these two cases, window.event.srcElement changes to reflect the target: for the first case, this property will point to the <img> element, while it will point to the <body> element for the second case. However, from inside our event handlers, we can t determine whether the event originated from the current element or another element, because all we have access to is the target element, not the current element whose handler is being fired. The standards model solves this by providing the currentTarget property. This property is a reference to the current element whose handler is being fired. For the target element s event handlers, the target and currentTarget properties of the passed event object will be the same object. In contrast, elements whose event handlers are fired due to event propagation will have different currentTarget and target properties. <html> <head> <script src="mootools.js"></script> <script> window.addEvent('domready', function(){ var handler = function(event){ if (event.currentTarget == event.target) console.log('The source of the event is ' + $(this).get('tag')); }; var items = $$('img, body, html').concat(document); items.each(function(item){ item.addEventListener('click', handler, false); }); //submit four requirements to be dealt with by the chain staff.DealWithRequirement("Not For Profit Corporates"); staff.DealWithRequirement("Commercial Corporates"); staff.DealWithRequirement("Dealers"); staff.DealWithRequirement("Government Agency"); } } Console Output Patterns.ChainOfResponsibility.SeniorMangerLink has managed the Not For Profit Corporates requirement. Patterns.ChainOfResponsibility.StaffLink has managed the public void BindGrid (int employeeID) { AdventureWorksDataContext db = new AdventureWorksDataContext(); var emps = db.uspGetEmployeeManagers(employeeID); BindingSource bs = new BindingSource(); bs.DataSource = emps; gridEmpHi.DataSource = bs; } c# code 39 reader The C# Barcode and QR Library | Iron Barcode - Iron Software
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