ASP.NET Web PDF Document Viewer/Editor Control Library

Next, we connect as db_app_data and create our schema objects. We begin with a table, dept, that contains the department number and name: admin@ORA10G> conn db_app_data/db_app_data Connected. db_app_data@ORA10G> -- create schema for the application db_app_data@ORA10G> create table dept 2 ( 3 dept_no number primary key, 4 dept_name varchar2(20) 5 ); Table created.

Tip If you re designing libraries for use from any .NET language, then there s no substitute for actually

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{ lblRendered.Text = DateTime.Now.ToLongTimeString(); } } This means that even though most of the markup for this page is pregenerated and cached in the memory of the web server, each request will have the most current date and time inserted where the Substitution element is declared. The extension to the output caching functionality provided by the post-cache substitution feature is a powerful facility that allows you to take a very fine grain of control over the performance of your pages. There s no reason you need to limit yourself to small pieces of markup when using this feature. Larger blocks of markup could be generated by the static method doing this work. Here s a sample method that s programmatically binding GridView and returning its rendered markup as a string. public static string GetData(HttpContext context) { GridView gv = new GridView(); DataTable dt = getAuthorsDataTable(); gv.DataSource = dt; gv.DataBind(); cn.Close(); StringBuilder sb = new StringBuilder(); HtmlTextWriter t = new HtmlTextWriter(new StringWriter(sb)); gv.RenderControl(t); return sb.ToString(); } Creatively combining output caching a post-cache substitution will be a technique you can leverage to super-charge the performance of your ASP .NET 2.0 web applications.

We create an emp table with various employee-related information: db_app_data@ORA10G> create table emp 2 ( 3 empno number primary key, 4 ename varchar2(20), 5 dept_no references dept, 6 salary number, 7 job varchar2(30) 8 ); Table created. Since we don t want to give the schema name of these two tables each time we refer to them from another schema, we create public synonyms for them. If we now access the table from a different schema (e.g., from the db_data_access_layer schema), we can refer to the synonym emp instead of referring to it as db_app_data.emp: db_app_data@ORA10G> create public synonym emp for emp; Synonym created. db_app_data@ORA10G> create public synonym dept for dept; Synonym created.

doing some experimental C# and Visual Basic programming to ensure that uses of your libraries look good from these languages. You can also use tools such as .NET Reflector and the Visual Studio Object Browser to ensure that libraries and their documentation appear as expected to developers. If necessary, enroll the help of a C# programmer and ask them what they think.

With ASP .NET, you don t generally write code that executes in the process space of the client. More often when you re using script, what you create using a managed language runs on the web server and dynamically generates client-side script. Oftentimes you ll use a control that generates client-side script based on how you ve declared it; and as a developer you may not even be aware that it s leveraging client-side script to do its work. Client-side script is very good at a number of things. It executes in the process space of the client, without requiring a trip across the network to talk to the server. This means it s fast. The work it does can happen instantly, with no delay for the user whatsoever. Combined with the object model exposed by DHTML and the power of CSS, you can create very rich functionality using script. Some common tasks you do with script are early validation of data entry; expanding, hovering, or moving ads and dialogs; pull-down menus; rollover highlights; and swapping out images. Even if you ve never learned how to code JavaScript, you can still leverage its power from your Web Forms. Every time you lay down a validation control on a page, it generates script on your behalf. There is a rich and broad set of canned, publicly available script that you can use

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