Asp.net Web Developer's Guide

asp net tutorial

2006-08-22T02:25:00.000-07:00

hmm... i very confuse that asp net tutorial will be must in the internet.learning asp net it's more that just read, you must practice, because of that learning asp net need extra time to get in the course. i see that asp net tutorial can be looks in www.planet-source-code.comi think that can help you all to got some asp net tutorial. like asp net shopping cart , because of that learning asp net

Content in Chapter 1

2006-07-21T08:11:00.000-07:00

Sitemap Chapter 1: Introducting ASP.Net Question why we use ASP.NetDeveloping ASP Part 1Developing ASP Part 2The Need For New ASP MOdelReviewing the Basics Of ASP.NetUtilizing the Flexibility of ASP.NetConverting Code Into Multiple LanguagesComparing Improvements in ASP.Net To Previous ASP ModelsHow Web Servers Execute ASP FilesCompiling and Delivering ASP.NetRequirement Make ASP.Net

Content in Chapter 2

2006-07-21T07:18:00.000-07:00

Sitemap Chapter 2: ASP.Net NamespacesMore About Namespaces in ASP.NetCollection of Namespaces in ASP.NetDescription Data TypeEnabling Client / Browser Communication with the System.Web NameSpaceSystem.Web.Services.Namespace SetProcessing XML Files Using the System.XML Namespace

Content in Chapter 3

2006-07-21T07:08:00.000-07:00

Sitemap Chapter 3:ASP Server ControlCollecting Data Using HTML Forms Server-Side Processing in ASP.NetA Simple Application Using Conventional HTML ControlsA Simple Application Using ASP Server ControlsA Simple Application Using Conventional HTML ControlsUsing VS.Net for Developing a Web ApplicationUsing HTML Server ControlUsing the HTML InputFile ControlUsing ASP.Net Web Control Using Labels,

Using the DataList Control (Chapter 3)

2006-07-21T02:05:00.000-07:00

The DataList control is similar to the Repeater control. However, it has some additional properties and templates that you can use to display its data in a diverse fashion.The Repeater control does not have any built-in layout or style.We are forced to specify all formatting-related HTML elements and style tags. On the other hand, a DataList control provides more flexibility to display data in a

Exposing Properties of a User Control

2006-03-29T05:16:00.000-08:00

Obviously, the control developed in our previous example does not do much more than display the current time. If judiciously designed, a user control can actually play an extremely crucial role in systems development practice.We can develop user controls to encapsulate standard business processes. A user control is essentially a visual component (almost like ActiveX controls and visual JavaBeans)

Creating a Simple Web User Control

2006-03-29T05:13:00.000-08:00

Suppose that we want to build the control as shown in Figure 3.88. If a host page embeds this control, it will automatically display the current time in the server’s time zone. Once we build this control, we can use it in any subsequent page.We will provide a step-by-step procedure to build this control.Figure 3.88 A Sample User Control Develop the necessary code for the control.The code for this

Creating Custom ASP Server User Controls

2006-03-29T04:32:00.000-08:00

We may develop our own server controls by extending an existing control or a group of controls to provide additional functionalities. As stated earlier, there are two versions of custom controls:Web User Controls and Web Custom Controls.The Web User Controls are easy to develop and these are typically stored as ascx files. The Web Custom Controls require in-depth knowledge of Object Oriented

Providing Data Editing Capability in a DataGrid Control

2006-03-29T04:30:00.000-08:00

We can enable the user to edit data in a DataGrid or DataList control. Typically, we accomplish this by employing the OnEditCommand, OnCancelCommand, and OnUpdateCommand properties. If needed, we can also use the OnDeleteCommand property of a DataGrid control to allow deletion of a selected record.The OnDeleteCommand property is not available in a DataList. In this example, we will illustrate how

Navigating to a Selected Page

2006-03-29T04:25:00.000-08:00

In our previous example, we could only move to the previous or next page.We can sure do better than that! We can display a list of page numbers, and the user can click any one of these page numbers to move to the desired page. In this example we will illustrate how to accomplish this objective.The run-time view of the application is shown in Figure 3.84.The code for the application is shown in

Providing Paging in DataGrid

2006-03-29T02:57:00.000-08:00

In case of a large data table, we may want to provide paging capability to the user.We implement the paging functionality in many different ways. In this context, we will present two examples. First, we will illustrate how to provide a pair of VCR style icons to enable the user to navigate to the previous or the next page of the data displayed in a data grid. Later, we will present an example

Sorting DataGrid

2006-03-28T22:28:00.000-08:00

Yes, on click of any of the column headers, we can dynamically sort the records of a data grid. However, please bear in mind that the DataGrid itself does not provide the sorting algorithm. It rather provides a mechanism to enable us to call a sorting routine. Fortunately, in our example (as shown in Figure 3.80), we do not need to implement a sorting algorithm ourselves.We have used the SQL

Displaying Formatted Data with Styles

2006-03-28T21:48:00.000-08:00

In this example, we will illustrate how to format and style the contents of a DataGrid.We will also demonstrate how to lay out the columns in a different order other than the original order of the columns in the data source.The runtime view of the application is shown in Figure 3.78.The complete code is shown in Figure 3.79. Please notice that our SQL statement for the data extraction procedure

Displaying Data in a DataGrid Control Using Default Column Mapping

2006-03-28T21:15:00.000-08:00

In this example, we will use the default layout of a data grid to display the bound data.The expected output of this example is shown in Figure 3.76. Exactly like a Repeater, or a DataList control, the DataGrid control also requires binding to an appropriate data source. Besides the binding chore, the specification of the data grid, particularly in this example, is extremely simple as follows:<

Using the DataGrid Control (Chapter 3)

2006-03-28T08:41:00.000-08:00

The DataGrid Control happens to be the most versatile and powerful member of the data-bound control family. In addition to the functionalities offered by a DataList, the DataGrid control offers sorting and paging capabilities.We can employ its property to dynamically sort and re-display data on selection of a column header. In case of very large data source, we can use its

Capturing Selected Items in a DataList Control (Chapter 3)

2006-03-28T08:35:00.000-08:00

In this example, we will use a DataList control to display the product names in a tabular fashion.Within the DataList control, the product names are displayed using link buttons.The output of this application is shown in Figure 3.74. Once the user selects a particular product name, our objective is to display the name of the selected product.We will also display the index number of the selected

Using RepeatDirection and RepeatColumn Properties of a DataList (Chapter 3)

2006-03-28T02:28:00.000-08:00

In this example, our objective is to display the product’s data in a fashion as shown in Figure 3.72. A data table in a data set is essentially a relational databaselike table in the computer’s cache. It has rows (records) and columns (fields) of data extracted from the database.When we bind a ListControl to a data table, each record of the data table becomes an Item in the ItemList collection of

Using Event Bubbling and Capturing Events in a Repeater Control (Chapter 3)

2006-03-28T01:39:00.000-08:00

You can use the Repeatercontrol to accomplish much more than just displaying data. In its templates, we may insert other controls. In this example, we will place an asp:Button control in the ItemTemplate of our repeater. As shown in Figure 3.70, the repeater will display a button for every record in its data source.We may capture the click event of this button and perform appropriate processing.

Displaying Data in a Repeater Control (Chapter 3)

2006-03-28T01:12:00.000-08:00

Suppose that we want to display our products data for the products that cost more than $45.00.The expected display for this application is shown in Figure 3.68.The code for this application is shown in Figure 3.69.Figure 3.68 Displaying Data in a Repeater ControlIn this application we have defined three templates for our repeater.The Header template starts an HTML table with a tag.The

Using the Repeater Server Control (Chapter 3)

2006-03-27T01:00:00.000-08:00

The Repeater is essentially a template-driven data-bound list.The Repeater control allows fragments of html tags inside the templates. For example, we may start a

in the Header template and end the table (

) in the Footer template, if necessary.The control binds its Item collection to the its DataSource.We may use the Item Command event to process events that are raised from the

The ValidationSummary Control (Chapter 3)

2006-03-26T23:53:00.000-08:00

The ValidationSummary control enables us to display all errors in a given location. It displays the “errorMessage” properties of respective controls in the summary report. Since the error messages are displayed in the summary, often we suppress the detailed error message in the individual ValidatorControls by placing an asterisk (*) or a short message right after the validator control’s start-tag

CustomValidator with Explicit Client-Side Validation Function (Chapter 3)

2006-03-26T23:42:00.000-08:00

In the CustomValidator, we may specify a twin client-side validation function. To employ the client-side validation, we will have to specify the name of the client-side validation function in the ClientValidationFunction property of the CustomValidator control.The client-side function needs to be coded in JavaScript, and it should also return true or false.Obviously, the client-side validation

The CustomValidator Control (Chapter 3)

2006-03-26T23:38:00.000-08:00

In many situations, we may not be able to use the existing validators to validate a complex rule. In that case, we may apply a CustomValidator. When applying a CustomValidator, we may provide our own functions that will return true or false. We may develop the code for server-side validation only, or we may develop the code for server-side as well as the client-side validation. Suppose that the

The RangeValidator Control (Chapter 3)

2006-03-26T23:11:00.000-08:00

You can use this control to check if an input is within an acceptable range. Suppose that we want to provide a textbox for collecting data on “number of dependents.”We want to enforce a constraint that this field should be from 0 to 10. Figure 3.55 illustrates the use of a RangeValidator in this particular situation. Figure 3.55 Using the RangeValidator ControlIn our code, we have used the type,

The CompareValidator Control (Chapter 3)

2006-03-26T23:09:00.000-08:00

The CompareValidator control compares an input to a specified value or to the value of another control.You can also use it to check if the input is of any particular data type. In our next example, we will add a textbox named txtR. In this textbox, the user will enter the hourly rate. Suppose that we want the data-type of this field to be Double.We will apply a CompareValidator control to test

Populating myDataSet and Binding a ListControl Example (Chapter 3)

2006-03-26T00:55:00.000-08:00

1. Sub bindListControl()2. Dim myConn As OleDbConnection3. Dim myOleDbAdapter As OleDbDataAdapter4. Dim connStr, sqlStr As String5. Dim myDataSet As New Dataset6. connStr="Provider=Microsoft.Jet.OLEDB.4.0;" _7. + "Data Source=D:\Products.mdb"8. sqlStr="SELECT ProductId, ProductName, Price, ImagePath " _9. + "FROM Products WHERE Price>45.00 ORDER BY Price"10. myConn= New OleDbConnection(connStr)11

Validating Patterned Strings, Passwords, and Dates (Chapter 3)

2006-03-26T00:18:00.000-08:00

Suppose that we want the user to enter the phone number, date of birth, hiredate, password, and confirmation of password. Also suppose that the business environment dictates that we enforce the following constraints:The phone number must follow a pattern like (ddd)ddd-dddd for employees in the USA. It should match dd.dd.dd.dd for employees in France.The date of birth must be between 1/1/1940 and

The RegularExpressionValidator Control(Chapter3)

2006-03-25T23:43:00.000-08:00

The RegularExpressionValidator control is typically used to match an input pattern. As an example, let us assume that the value of hours-worked field must have one to three digits. In this case, we will add a RegularExpressionValidator to the txtHcontrol. In the RegularExpression property of the RegularExpressionValidator, we will specify a pattern /d{1,3}. This will force the system to raise an

The RequiredFieldValidator Control(Chapter3)

2006-03-25T23:25:00.000-08:00

In the following example, the user is expected to enter two values. If he or she skips any one of the values and clicks the Submit button, the system will report the error. Please notice that we do not require any extra code for performing this validation.When the Submit button is clicked, the form will be sent to the server, and the server will do the automatic validation.The run-time view of

Validation Controls(Chapter3)

2006-03-24T23:12:00.000-08:00

A validation control enables us to validate an input and display an error message if necessary. It is very much like other server-side controls with certain additional methods and properties. First, the server treats it as an invisible control. After the user has entered erroneous data, it becomes visible. It is a powerful, rapid application development feature; however, a developer needs to

Binding a ListControl to an ArrayList(chapter 3)

2006-03-24T22:28:00.000-08:00

In most of our previous examples, we loaded a list box via code in the Page_Load event. In this section, we will introduce an important concept of a typical ASP.NET development practice. Rather than populating a specific control via code, we may bind a control to a data source (something that contains data). In this case, the control will automatically assume the value or values contained in the

Using HyperLink Controls(Chapter3)

2006-03-22T22:07:00.000-08:00

The HyperLink server control enables us to link to a different page. Its Text property is displayed on the screen as a hyperlink. On click of the hyperlink, it links to a page specified in its NavigateUrl property.The displayed text can be replaced by an image by specifying the ImageUrl property. In our next example, we will develop a page with two HyperLink controls. One of them will display

Using Labels, TextBoxes, RadioButtons, CheckBoxes, and DropDownLists (Chapter3)

2006-03-21T23:21:00.000-08:00

In this example, we will develop a simple payroll estimation application todemonstrate Labels,TextBoxes, RadioButtons, CheckBoxes and a DropDownList.Wewill use a button control to submit a user’s given data to the server.We will collectdata on hours worked, and hourly rate using two textboxes. Insurance-relateddata will be collected using two radio buttons: “No Insurance ($0.00),” and“Family

Using ASP.NET Web Controls(chapter 3)

2006-03-21T21:12:00.000-08:00

The ASP.NET Web controls are also known as Web form controls. Microsoft has included a plethora of Web controls in the System.Web.UI.WebControls namespace.For discussion purposes, we will divide these controls into three major categories:Basic Web Controls These Web controls are similar to HTML server controls but have additional features.These controls have a richer andmore consistent object

Using the Html InputFile Control(chapter 3)

2006-03-19T07:00:00.000-08:00

The HtmlInputFile control has been designed to program against the HTML element.We can use this control to enable users to upload binary or text files from a browser to a directory that we specify in our Web server. Its major attributes are as follows:2: <%@ Import Namespace="System.Data" %>3: <%@ Import Namespace="System.Data.SqlClient" %>4:5: