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117Ħ.1 Using the operator Keyword.117Ħ.2 Supporting Other. 97ĥ.1 Specialization and Generalization.97Ībout the Unified Modeling Language. 89Ĥ.7 Encapsulating Data with Properties. How Finalize Works.82Ĥ.5 Passing Parameters.84Ĥ.6 Overloading Methods and Constructors. 69Ĥ.2 Creating Objects.73Ĥ.3 Using Static Members.78 Classes and Objects.69Ĥ.1 Defining Classes. We'd Like to Hear from You.15Īcknowledgements. 14Ĭ# versus C++.14Ĭonventions Used in This Book. NET platform and the development of desktop and Internet applications. Programming C# teaches this new language in a way thatĮxperienced programmers will appreciate-by grounding its application firmly in the context of

Safe, object-oriented, and Internet-centric. The goal of C# is to serve as a high-performance language for. Again, every action is checked with the DTD, so that you can be sure not to invalidate your document by, for instance, deleting a required field.Prévia do material em texto Programming C# The third combo box is for deleting XML fields. For instance, if you click on the name Paul in the first line of the document, and try to insert a street, an error will occur, because this record already contains a street. Depeding on the DTD, not all elements can be inserted at all positions. You can select to either insert a complete address record, or one of the optional elements, which are street and city. With the second combo box, additional XML fields can be inserted. If you move down the caret by pressing the down arrow key, the display will change from name to street, city and email, depending on what type of field you are in. The first combo box displays the style of the current XML field. You don't need to create the combo boxes yourself, they are built into Text Control's ButtonBar. You will notice that there is now a button bar with 3 combo boxes: Run the sample program and load the demo file address_list.xml.

#Vb .net build a buttonbar windows

%USERPROFILE%\Documents\TX Text Control 31.0.NET for Windows Forms\Samples\WinForms\VB.NET\Howto\XMLEditing.

%USERPROFILE%\Documents\TX Text Control 31.0.NET for Windows Forms\Samples\WinForms\CSharp\Howto\XMLEditing.

This chapter looks at some of the differences between normal text editing and editing an XML file. This CSS file tells Text Control that an address entry should be displayed as a table, and that the individual elements are table cells, having a 1 pixel wide border and a font size of 1 point:īaker loading this XML file, the XmlInvalid event is fired and handled by displaying a MessageBox that informs the user about the reason of the error. In line 2 of the XML file (above), you can see a reference to a stylesheet file called address.css.

#Vb .net build a buttonbar code

Looking at the source code reveals nothing unusual: The main difference to the Open File routine in other Text Control sample programs is the Load method being called with the StreamType value XMLFormat as a parameter, so that the Open File dialog box will only display XML files:īaker that, unlike an HTML or RTF file, an XML file does not contain any information about how the text is to be displayed or formatted. The sample program has only one menu item, which is Open File. %USERPROFILE%\Documents\TX Text Control 31.0.NET for Windows Forms\Samples\WinForms\VB.NET\Howto\XMLBasics.

%USERPROFILE%\Documents\TX Text Control 31.0.NET for Windows Forms\Samples\WinForms\CSharp\Howto\XMLBasics.

The source code for this example is contained in the following directories:

There is a more detailed description of the XML related propertiesand methods in the Technical Articles section, see Working with XML Files.

#Vb .net build a buttonbar how to

It will show you how to open an XML file, and how to use it in conjunction with a CSS stylesheet and a DTD. The purpose of this chapter is to help you get started with Text Control Enterprise and its XML features.