Other Methods to Read Data in .net C#

Integrated qr barcode in .net C# Other Methods to Read Data

The ListBox control is derived from the Systems.Windows.Controls.Primitives.Selector class and allows users to select one or more items from a collection of items. The ListBox provides a way to display one or more items and allows the user to select among them. Table 3-25 describes its properties. Table 3-25. Properties of the System.Windows.Controls.ListBox Class

The iPod touch makes it easy to copy and save images from web sites. This can be handy when you are looking for a new image to use as wallpaper on your iPod touch.

It is generally not faster to commit frequently it is almost always faster to do the work in a single SQL statement. By way of a small example, say we have a table, T, with lots of rows, and we want to update a column value for every row in that table. We ll use this to set up such a table (run these four setup steps before each of the three cases below): ops$tkyte%ORA11GR2> drop table t; Table dropped. ops$tkyte%ORA11GR2> create table t as select * from all_objects; Table created.

To use CSLA .NET, developers merely need to determine which base classes to inherit from when creating each business class. For example, some business objects will be editable objects that can be loaded directly by the user. These need to inherit from BusinessBase, as shown in Figure 6-11.

CREATE GLOBAL TEMPORARY TABLE DATALOG.TS_OSSTAT ON COMMIT DELETE ROWS AS SELECT STAT_NAME, VALUE FROM V$OSSTAT WHERE 0=1; CREATE GLOBAL TEMPORARY TABLE DATALOG.TE_OSSTAT ON COMMIT DELETE ROWS AS SELECT STAT_NAME, VALUE FROM V$OSSTAT WHERE 0=1; CREATE GLOBAL TEMPORARY TABLE DATALOG.TS_SYS_TIME_MODEL ON COMMIT DELETE ROWS AS SELECT STAT_NAME, VALUE FROM V$SYS_TIME_MODEL WHERE 0=1; CREATE GLOBAL TEMPORARY TABLE DATALOG.TE_SYS_TIME_MODEL ON COMMIT DELETE ROWS AS SELECT STAT_NAME, VALUE FROM V$SYS_TIME_MODEL WHERE 0=1; CREATE GLOBAL TEMPORARY TABLE DATALOG.TS_SYSSTAT ON COMMIT DELETE ROWS AS SELECT NAME, VALUE FROM V$SYSSTAT WHERE 0=1;

The following method will write the Model information to a file: private void WriteModelStructure(Model model) { StreamWriter writer = new StreamWriter("modelStructure.txt"); writer.WriteLine("Model Bone Information"); writer.WriteLine("----------------------"); ModelBone root = model.Root; WriteBone(root, 0, writer); writer.WriteLine(); writer.WriteLine(); writer.WriteLine("Model Mesh Information"); writer.WriteLine("----------------------"); foreach (ModelMesh mesh in model.Meshes) WriteModelMesh(model.Meshes.IndexOf(mesh), mesh, writer); writer.Close(); } Because you ll be writing text to a file, you ll create a StreamWriter. For this to work, you will need to link to the System.IO namespace by adding this line to the very top of your code file: using System.IO; Next, you ll write a header to the file and call the WriteBone method for the root Bone of your Model. This method, which you ll create in two minutes, will write down the information of this Bone and pass this call on to all of its child Bone objects so all Bone objects will be written to the file. After writing the second header to file, you scroll through all ModelMeshes of the Model and pass them to the WriteModelMesh method, which will write all information regarding the ModelMesh to file.

Since a variety of state changes can happen to media, such as a video switching from playing to buffering when it needs to load more of the file, in most applications you will want to implement an

The naming convention for local variables is camel case, meaning the first letter is lowercase, multiple words are concatenated together, and the first letter of each subsequent word is uppercase, for example, myVariable.

Web development can sometimes be pretty repetitive. No, I am not talking about creating a lengthy online questionnaire that no sane person will ever fill out, but rather in terms of the markup you have to write. To ease this pain, Microsoft has introduced a number of prewritten HTML and ASP.NET snippets (blocks of code) that will substantially reduce the amount of typing you have to do and minimize typos (and possibly reduce RSI in the web development community). I am a big believer in saving time spent on tedious tasks, so let s take a look into these snippets now.

In the preceding examples, all filled rectangles were drawn entirely filled with one color. By specifying different values for the start and end colors, you can achieve interesting color gradient effects. The code in Listing 11-5 produces a rectangle filled with a diagonal color gradient that starts in the top-left corner of the rectangle with white and ends in the bottom-right corner with black, as shown in Figure 11-6.

Besides being convenient, auto-implemented properties allow you to easily insert a property where you might be tempted to declare a public field. Public fields are generally discouraged because they don t allow you to process the input and output the way you can with accessors. You might, however, be tempted to release a version of the code with a public field, and then in a later release change the field to a property. However, the semantics of a compiled variable and a compiled property are different. If, in a later release, you were to switch from a field to a property, any assemblies accessing that field in the first release would have to be recompiled to use the property. If you use a property in the first place, the client doesn t have to be recompiled.