WPF: How to merge multiple columns in grid ?

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Facade Design Pattern

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The facade design pattern allows us, to provide a simplified interface from multiple class libraries. It provides a simple interface that hides the complexity of the class libraries being used. UML Class diagram For example, if the client code needs to access three different class libraries for a single functionality, instead of having the client code accessing those 3 class libraries, we can just create another class, that calls the required class libraries and have the client access only the class that you have created. The result is a simplified interface for the client and the client will not need to know the details of the actual (three) class libraries. Real World Examples for Facade Pattern A MortgageApplication object, which provides a simplified interface to a large subsystem of classes measuring the credit worthiness of an applicant. Implementation of above example in C#.Net Create Customer class, public class Customer { private string _name; ...
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Convert typed library (.tlb) to .net assembly?

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Sometimes we have to use the legacy code(C, C++) in .Net projects which is provided by third party vendors. Most of the times these guys will provide, equivalent .net framework typed library (.tlb) of that legacy code. Then, how to refer those in our .net projects and make use of functionality provided by it?   Follow the below steps, Keep ".tlb" file which is nothing but legacy typed library Open windows command prompt Go to directory, " C:\Program Files (x86)\Microsoft Visual Studio 8\SDK\v2.0\Bin " or     "C:\Program Files\Microsoft Visual Studio 8\SDK\v2.0\Bin". It depends on which version of visual studio you had. Enter the following and execute, TlbImp.exe "E\MyLibrary.tlb" . Here, replace "E:\MyLibrary.tlb" with path to your tlb file. It will import the .net framework type library to assembly.i.e, .dll and it can be found at path "C:\Program Files (x86)\Microsoft Visual Studio 8\SDK\v2.0\Bin" with name ...
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Auto Scroll in Common Controls

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This example shows, how to programatically autoscroll WinForm controls TextBox, ListBox, ListView, TreeView and DataGridView. Autoscroll to the end of box or view is useful. For example, in situations when you use one of these components as the output log window. Usually you add the items to the box or view and you want to be sure that the recently added item is visible without the necessary to do it manually. Though it is not difficult to solve this problem, .NET doesn't provide any unified way how to do it. TextBox autoscroll Code: textBox1.SelectionStart = textBox1.Text.Length; textBox1.ScrollToCaret(); ListBox autoscroll Code: listBox1.SelectedIndex = listBox1.Items.Count - 1; listBox1.SelectedIndex = -1; ListView autoscroll Code: listView1.EnsureVisible(listView1.Items.Count - 1); TreeView autoscroll Code: treeView1.Nodes[treeView1.Nodes.Count - 1].EnsureVisible(); DataGridView autoscroll Code: dataGridView1.FirstDisplayedCell = ...
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