. Net engineers must understand the 20 question

The second Internet Guide: is overloaded? CTS, CLS and CLR, respectively, be interpreted?4. List know about your performance and the practical application of XML types and reference types 5.value the difference? Write a C # sample source code. 6.ADO.net in which everyday objects? Describe, respectively. 7. How to understand the commission? 8.C # interfaces and classes in what similarities and differences. 9 .. net in which classes are used to read and write database needs? Their connections and TCP connection function 10.UDP the similarities and differences. Body:

Want to become. Net engineer? Consider the following 20 questions you can answer how much road?

1. OO What are the main ideas?

2. What is. Net user control in the

3. What is the actual use of application domain? What is regulated? What is a strong category?What is boxing and unboxing? What is overloading? CTS, CLS and CLR, respectively, be interpreted?

4. List know about your performance and the practical application of XML

5.value categories and reference category is the difference? Write a C # sample source code.

6.ADO.net in which everyday objects? Describe, respectively.

7. How to understand the commission?

8.C # interfaces and classes in what similarities and differences.

9 .. net which classes are used in reading and writing needs? Their function

10.UDP connections and similarities and differences between TCP connections.

11.ASP.net authentication methods are there? What were thinking?

12. Processes and threads, respectively, how to understand?

13. What is the code-Behind performance.

14. Gathering the list of features.

15 .. net class to read and write XML, which all belong to the namespace?

16. Explain UDDI, WSDL meaning and function.

17. What is SOAP, what practical use.

18. How to deploy one ASP.netPAGE.

19. How to understand. Net recovery mechanism in the Junk.

20. Everyday tips for calling webservice What?

. Net environment based on the MVC Ajax solution

Introduction to the second Internet: cript extraordinary understanding, at least, its web development javascript web development appear competent enough to return to the contents of the PAGE of callbehind updates, so there is certainty DEV threshold increases when the Ajax-based mechanism to stop when DEV , under the original method based on postbehind time, asp.net source code from the backend logic (Model), aspxPAGE (View), aspx.cs (Controller) MVC framework consisting of failure in fact, when callbehind return data, either in the client end web development web development using javascript to return the content to appear updated analysis, or server-side configuration is necessary ... in the body: 1, difficult background

Currently, more and more people start trying to stop non-Based Ajax refresh WebDEV, however,. Net environments, the actual use of Ajax is not easy as unusual, mainly estimated by the following part of the reason is due to:

• Since the Ajax web development javascript-based nature of web development, making the need for javascript DEV Zhe development Feibixunchang understanding of network development network, at least, the javascript development web development network appear on the callbehind competent enough to return to the contents of the PAGE updates, so the DEV's determine the degree of increase in the threshold there is

* Ajax-based mechanism to stop the DEV when when under the original method based on postbehind when, / 'target =' _blank 'class =' infotextkey '> asp. Net from the back-end logic (Model), aspxPAGE (View), aspx.cs ( Controller) MVC framework consisting of failure in fact, when callbehind return data, either in the client-side javascript web development web development by parsing the content returned by an update, or server-side structure is necessary to better compete in the complete source code for static pages, and then directly from the web development javascript web development constructed to a good set of static pages PAGE object, it is clear that as a result, there should be a function of the easiest callbehind, should a lot of source code, and is relatively random contest source code, even in the difficult coming asp.net2.0 still not been effectively resolved

2 The purpose of this

This paper aims to fully conducive to the existing asp.net ajax own characteristics and features, made for a stop under the asp.net ajax the webDEV the MVC-based solutions to the following main objectives:

· Asp.Net Ajax environment for a clear MVC architecture

Reduced everyone too much javascript coding web development web development to reduce dependence on the threshold of English

• Flexible support of the daily DEV ajax mode method

3, difficulty planning

How to appear above the main purpose?

1) To xmlhttprequest for a better package, so call the method is more simple;

2) Try to update the data in the server side to stop the construction, but also to avoid the hand each time to return data structure, therefore, to expect did not score the full application of UserControl, the UserControl as the "View", corresponding to the document as by the ascx.cs " Controller ", consisting of MVC is also a contest as a clear;

4, difficult to solve

Based on the above ideas, a person to the group following a class library to simplify the process:

Source Code Analysis:

1) First in the client side, AjaxHelper.js encapsulates the xmlhttprequest, and will be available to help a

Sequence into the form param1 = v1 ¶ m2 = v2 & ... form for the post of parameters;

Update r (ajaxTemplate, output, params, onComplete) parameters for the call once callbehind

ajaxTemplate (required): Specifies the path UserControl run demand function

output (optional): Fill the prescribed label to return the data reference or IDvalue

params (optional): form param1 = v1 ¶ m2 = v2 & ... the post parameters

onComplete (optional): returns the data can be used to stop the special treatment of the callback parameter, the parameter formatting function (str), str for the returned data

SerializeForm (form) parameters for the sequence of

form: no result is specified reference or IDvalue

2) In the server side, Ajax.aspx documentation package for the specified by the client ajaxTemplate UserControl call, the rest of the specific logic function in a particular UserControl and ascx.cs appeared in;

3) as a callbehind specific run, the English we simply PAGE reference AjaxHelper.js, and in the specified location through the web development web development javascript: Update r (ajaxTemplate, output, params, onComplete) to stop calling, if the demand Stop a form submission, you can call the javascript web development web development: SerializeForm (form) sequence of the form and pass params, of course, did not score manually constructed params, and returns the data specified by set output or through the practical application of the PAGE onComplete custom processing.

4) The full use of UserControl, means that the results did not make full use of existing side asp.net controls and data binding mechanisms, as a matter of fact, has largely simplified the return data structure, in ascx.cs, after Request.Form [ParamName] visit to the client side will be able to pass the params, then visit the logic source code for the source data.

. Net engineers must understand the 20 question

The second Internet Guide: is overloaded? CTS, CLS and CLR, respectively, be interpreted?4. List know about your performance and the practical application of XML types and reference types 5.value the difference? Write a C # sample source code. 6.ADO.net in which everyday objects? Describe, respectively. 7. How to understand the commission? 8.C # interfaces and classes in what similarities and differences. 9 .. net in which classes are used to read and write database needs? Their connections and TCP connection function 10.UDP the similarities and differences. Body:

Want to become. Net engineer? Consider the following 20 questions you can answer how much road?

1. OO What are the main ideas?

2. What is. Net user control in the

3. What is the actual use of application domain? What is regulated? What is a strong category?What is boxing and unboxing? What is overloading? CTS, CLS and CLR, respectively, be interpreted?

4. List know about your performance and the practical application of XML

5.value categories and reference category is the difference? Write a C # sample source code.

6.ADO.net in which everyday objects? Describe, respectively.

7. How to understand the commission?

8.C # interfaces and classes in what similarities and differences.

9 .. net which classes are used in reading and writing needs? Their function

10.UDP connections and similarities and differences between TCP connections.

11.ASP.net authentication methods are there? What were thinking?

12. Processes and threads, respectively, how to understand?

13. What is the code-Behind performance.

14. Gathering the list of features.

15 .. net class to read and write XML, which all belong to the namespace?

16. Explain UDDI, WSDL meaning and function.

17. What is SOAP, what practical use.

18. How to deploy one ASP.netPAGE.

19. How to understand. Net recovery mechanism in the Junk.

20. Everyday tips for calling webservice What?

. Net environment based on the MVC Ajax solution

Introduction to the second Internet: cript extraordinary understanding, at least, its web development javascript web development appear competent enough to return to the contents of the PAGE of callbehind updates, so there is certainty DEV threshold increases when the Ajax-based mechanism to stop when DEV , under the original method based on postbehind time, asp.net source code from the backend logic (Model), aspxPAGE (View), aspx.cs (Controller) MVC framework consisting of failure in fact, when callbehind return data, either in the client end web development web development using javascript to return the content to appear updated analysis, or server-side configuration is necessary ... in the body: 1, difficult background

Currently, more and more people start trying to stop non-Based Ajax refresh WebDEV, however,. Net environments, the actual use of Ajax is not easy as unusual, mainly estimated by the following part of the reason is due to:

• Since the Ajax web development javascript-based nature of web development, making the need for javascript DEV Zhe development Feibixunchang understanding of network development network, at least, the javascript development web development network appear on the callbehind competent enough to return to the contents of the PAGE updates, so the DEV's determine the degree of increase in the threshold there is

* Ajax-based mechanism to stop the DEV when when under the original method based on postbehind when, / 'target =' _blank 'class =' infotextkey '> asp. Net from the back-end logic (Model), aspxPAGE (View), aspx.cs ( Controller) MVC framework consisting of failure in fact, when callbehind return data, either in the client-side javascript web development web development by parsing the content returned by an update, or server-side structure is necessary to better compete in the complete source code for static pages, and then directly from the web development javascript web development constructed to a good set of static pages PAGE object, it is clear that as a result, there should be a function of the easiest callbehind, should a lot of source code, and is relatively random contest source code, even in the difficult coming asp.net2.0 still not been effectively resolved

2 The purpose of this

This paper aims to fully conducive to the existing asp.net ajax own characteristics and features, made for a stop under the asp.net ajax the webDEV the MVC-based solutions to the following main objectives:

· Asp.Net Ajax environment for a clear MVC architecture

Reduced everyone too much javascript coding web development web development to reduce dependence on the threshold of English

• Flexible support of the daily DEV ajax mode method

3, difficulty planning

How to appear above the main purpose?

1) To xmlhttprequest for a better package, so call the method is more simple;

2) Try to update the data in the server side to stop the construction, but also to avoid the hand each time to return data structure, therefore, to expect did not score the full application of UserControl, the UserControl as the "View", corresponding to the document as by the ascx.cs " Controller ", consisting of MVC is also a contest as a clear;

4, difficult to solve

Based on the above ideas, a person to the group following a class library to simplify the process:

Source Code Analysis:

1) First in the client side, AjaxHelper.js encapsulates the xmlhttprequest, and will be available to help a

Sequence into the form param1 = v1 ¶ m2 = v2 & ... form for the post of parameters;

Update r (ajaxTemplate, output, params, onComplete) parameters for the call once callbehind

ajaxTemplate (required): Specifies the path UserControl run demand function

output (optional): Fill the prescribed label to return the data reference or IDvalue

params (optional): form param1 = v1 ¶ m2 = v2 & ... the post parameters

onComplete (optional): returns the data can be used to stop the special treatment of the callback parameter, the parameter formatting function (str), str for the returned data

SerializeForm (form) parameters for the sequence of

form: no result is specified reference or IDvalue

2) In the server side, Ajax.aspx documentation package for the specified by the client ajaxTemplate UserControl call, the rest of the specific logic function in a particular UserControl and ascx.cs appeared in;

3) as a callbehind specific run, the English we simply PAGE reference AjaxHelper.js, and in the specified location through the web development web development javascript: Update r (ajaxTemplate, output, params, onComplete) to stop calling, if the demand Stop a form submission, you can call the javascript web development web development: SerializeForm (form) sequence of the form and pass params, of course, did not score manually constructed params, and returns the data specified by set output or through the practical application of the PAGE onComplete custom processing.

4) The full use of UserControl, means that the results did not make full use of existing side asp.net controls and data binding mechanisms, as a matter of fact, has largely simplified the return data structure, in ascx.cs, after Request.Form [ParamName] visit to the client side will be able to pass the params, then visit the logic source code for the source data.

Personal history tips: ASP.NET Applications 2.0 generics and anonymous tips

Introduction to the second Internet: s.Generic.Stack (statement source code) did not score the Stack class thought of as the process has the following schematic: Stack class indicative source: public class stack <> {T [] item; int count ; public void Push (T item) {} public T pop () {}} No results for the generic type parameter set three kinds of constraints: the derived constraints, structural parameter constraints, the reference / value type constraint Anonymous Tip: Almost Anonymous Tips ... Body:

Generic:

Generic Description: Generic class can actually be used, tricks, frameworks, interfaces, delegates and other design, and reusability, type and high efficiency is associated in a non-generic of the reach for the practical application of generic , required application class System.Collections.Generic.Stack. Such a statement as follows:

System.Collections.Generic.Stack (Declaration)

No results the Stack class thought of as the process has the following schematic:

Indicative of the source code of class Stack:

public class stack <> 

{ 

T [] item; 

int count; 

public void Push (T item) {} 

public T pop () {} 

} 

No results for the generic type parameter to set the constraints 3: derived constraints, structural parameter constraints, the reference / value type constraint

Anonymous tips:

Anonymous tips overview: In C # 1.x, the application support calls tricks of the delegate to occur event. Fu and tricks to help calculate commission to add or delete the purpose of tips, did not result in the whole. Net framework, widely used for events, callbacks, asynchronous calls, multithreading. However, in order to apply a commission, and sometimes can not not create a class or a trick, this approach is too cumbersome, and the habit of thinking with the DEV we do not match. For example, the following example arose from a box containing a list, document boxes, and buttons for simple input form. When you press the button, the document box of the document will be added to the list box. In C # 1.x, the application event mechanism entrusted to occur, the source code looks like

The emergence of application C # 1.x source code

class InputForm: From 

{ 

ListBox listBox; 

TextBox textBox; 

Button addButton; 

pulic MyForm () 

{ 

listBox = new ListBox (); 

textBox = new TextBox (); 

addButton = new Button (); 

} 

........ 

void AddClick (object sender, EventArgs e) 

{ 

listBox.Items.Add (textBox.Text) 

} 

} 

Anonymous tips allow one associated with the source code (usually tips entity) "embedded" into the application areas delegate, delegate and tricks entities that together

The emergence of anonymous tips application source code (no argument)

class InputForm: From 

{ 

ListBox listBox; 

TextBox textBox; 

Button addButton; 

pulic MyForm () 

{ 

listBox = new ListBox (); 

textBox = new TextBox (); 

addButton = new Button (); 

addButton.Click + = delegate {listBox.Items.Add (textBox.Text);} 

} 

}

Personal history tips: ASP.NET Applications 2.0 generics and anonymous tips

Introduction to the second Internet: s.Generic.Stack (statement source code) did not score the Stack class thought of as the process has the following schematic: Stack class indicative source: public class stack <> {T [] item; int count ; public void Push (T item) {} public T pop () {}} No results for the generic type parameter set three kinds of constraints: the derived constraints, structural parameter constraints, the reference / value type constraint Anonymous Tip: Almost Anonymous Tips ... Body:

Generic:

Generic Description: Generic class can actually be used, tricks, frameworks, interfaces, delegates and other design, and reusability, type and high efficiency is associated in a non-generic of the reach for the practical application of generic , required application class System.Collections.Generic.Stack. Such a statement as follows:

System.Collections.Generic.Stack (Declaration)

No results the Stack class thought of as the process has the following schematic:

Indicative of the source code of class Stack:

public class stack <> 

{ 

T [] item; 

int count; 

public void Push (T item) {} 

public T pop () {} 

} 

No results for the generic type parameter to set the constraints 3: derived constraints, structural parameter constraints, the reference / value type constraint

Anonymous tips:

Anonymous tips overview: In C # 1.x, the application support calls tricks of the delegate to occur event. Fu and tricks to help calculate commission to add or delete the purpose of tips, did not result in the whole. Net framework, widely used for events, callbacks, asynchronous calls, multithreading. However, in order to apply a commission, and sometimes can not not create a class or a trick, this approach is too cumbersome, and the habit of thinking with the DEV we do not match. For example, the following example arose from a box containing a list, document boxes, and buttons for simple input form. When you press the button, the document box of the document will be added to the list box. In C # 1.x, the application event mechanism entrusted to occur, the source code looks like

The emergence of application C # 1.x source code

class InputForm: From 

{ 

ListBox listBox; 

TextBox textBox; 

Button addButton; 

pulic MyForm () 

{ 

listBox = new ListBox (); 

textBox = new TextBox (); 

addButton = new Button (); 

} 

........ 

void AddClick (object sender, EventArgs e) 

{ 

listBox.Items.Add (textBox.Text) 

} 

} 

Anonymous tips allow one associated with the source code (usually tips entity) "embedded" into the application areas delegate, delegate and tricks entities that together

The emergence of anonymous tips application source code (no argument)

class InputForm: From 

{ 

ListBox listBox; 

TextBox textBox; 

Button addButton; 

pulic MyForm () 

{ 

listBox = new ListBox (); 

textBox = new TextBox (); 

addButton = new Button (); 

addButton.Click + = delegate {listBox.Items.Add (textBox.Text);} 

} 

}

ASP in the database records the selection and filter out

The second Internet Guide: Class records, or that they expect to apply some "query interface" to create and run queries, SQL databases without having direct application. This article demonstrates the use of ASP performance filter out the records to establish the interface to select a trick. Although the discussion of the settlement where the trick is quite simple, but the application did not result in similar performance of complex queries of any WebPAGE help do the job. Solution for any tips before coding, you should fully understand and record the end-user needs. For this example, the user requires the ability to use the specified types of tricks to get the specified name ... Body:

 

First, note 
Most end users of their Web solutions require some kind of report can help do the job.Application of static Web pages and, no result is very simple to help record and are listed in the table one by one view of their competence. However, users often require that after a drop-down list box (or other selection method) to select a specific category of records, or that they expect to apply some "query interface" to create and run queries, SQL databases without having direct application. This article demonstrates the use of ASP performance filter out the records to establish the interface to select a trick. Although the discussion of the settlement where the trick is quite simple, but the application did not result in similar performance of complex queries of any WebPAGE help do the job. 
Solution for any tips before coding, you should fully understand and record the end-user needs. For this example, the user requires the ability to use the specified class name specified in the table to get the hang of a group of records, he had not the type of results did not select all results select a specific category. That feature is there, we apply a the "recursive" ASPPAGE, it has helped select the form contains the category from the list, according to the data extraction form to send the results of the record set, the result will be recorded in the form of table appears to facilitate the user to look. 

Second, the structure required to filter out 
For the practical application of such a database should first understand the database table involved in the necessary framework and connect to the database connection parameters. Tips connection parameters specified in Microsoft's ASP online documentation has a very detailed description, the paper will not repeat them. In this case to use two tables for the: Document_Category, it contains for the user to select a category name Category_Name; Documents, which contains the names corresponding to other data types, fields, including Category_Name, File_Name, Comments, Date_Submitted and so on. 
Select the category list in the form table from the category of Category_Name Document_Category field, constructed type drop-down list box below, please note that there use to VBScript ADO contains documentation: 


 
<% 
ConnString = "DSN = LocalUpload;" 
Set conn = server. CreateObject ("ADODB.Connection") 
conn.Open ConnString,,, adOpenForwardOnly 
Set rs = SERVER.CreateObject ("ADODB.Recordset") 
'First get used to populate the drop-down list box the type of record 
'Set the SQL database statement 
database strSQL = "SELECT * FROM Document_Category ORDER BY category_title" 

database rs.Open strSQL, conn, adOpenStatic 
%> 

 

Please select a category: <% Do While Not rs.EOF Response.Write ("" _ & Rs ("Category_Name")) rs.MoveNext Loop rs.Close Set rs = Nothing %>     SELECT OnChange identified in the form used to submit a static page. When the drop-down list box value changes, the parameter getFilter runs. Applied similar tricks, no results will the database table records with multiple elements to describe the different forms (such as the second drop-down list box, radio button or check box, etc.). Select the type of user value will be used to construct records from the database SQL database SELECT statement. Third, submit the form Where we use the parameters of the two JAvA Programming Script task to complete submission of the form message. getFilter parameters used to value the user selected category to submit to the PAGE itself, but getListValue parameters are used to obtain the user selected category value. Script programming selection JAvA these two parameters so that your script appears to run without the same: