Data cannot be retrieved from the database when the code, compilation result, and database are determined to be normal. Error prompt: sysyem. net. webexception: the remote server returns the error notfound. The Listener finds that the requested Database Service is abnormal and the access address http404 is incorrect.
An error occurred while initiating a request to the database.
Error message after access to SVC address
After confirming that the other aspects are normal and the VS is fixed, t
Generally, you can set the Timeout attribute value in the configuration file to customize the service Timeout time. However, the WCF Service does not have a configuration file, and the default Timeout value is 60 s. But sometimes, if our query time exceeds 60 s, can we define the time-out by ourselves.
The answer is yes. The proxy class generated by RIA Services is just partial. We can use this to set timeo
[dbo].[Department] AS[Extent1]
As you can see, EF only queries two fields for us. Also, EF does not automatically correlate data for course tables for us.Note that in this code, we first select New with an anonymous type, bypassing the dbsetThen, we will find that we cannot get the data, trace the error, and we will find:{"The Entity or complex type ' schooldata.department ' cannot is constructed in a LINQ to Entities query."} system.systemexception {System.NotSupportedException}The
We are going to use WCF ria as the communication layer of Silverlight. As a result, my machine is installed with 4.0. After numerous tests, I went to the foreign forum to ask, and I didn't get any results, I told my boss that the complex object types could not be crossed after such a long test. As a result, my boss asked another colleague to test the complex entity types. I came back to study it, I can't do anything about it. I began to wonder if it w
First, we will introduce the definition of composite layers:
Using WCF Ria services, you can create applications for data classes in a composite hierarchy.ProgramLogic. These hierarchies contain classes associated with "having" relationships, including objects (overall or parent) that control the creation and lifecycle of contained objects (partial or child. For example,SalesorderheaderEntity hasSalesorde
In. in the development of net Ria Serivce, we often see that when operating data, some controls will often jump to a client's data verification exception breakpoint, and these breakpoints are often not what we want to see, this makes development debugging unnecessary. Here I will describe how to make this exception no longer appear when debugging Silverlight.
I set debugging parameters in vs to achieve the goal. Exception:
Solution:
1) menu> deb
How does HTML5 become the RIA "killer "?, Html5 becomes the ria killer
This article also describes the relationship between HTML5 and RIA. However, this article describes the subordination between HTML5 and RIA, rather than the technology.Okay, the first point of view, since HTML5 is the
If I don't work overtime at night, I will go home very early and read the best articles every day in my blog. In fact, I have found many articles about Silverlight, but there are not many articles about the WCF Ria service.
Two or three months ago, I started to learn about the WCF Ria service and tried to write a series of articles. Unfortunately, it was written on the csdn blog. We recommend it to you her
desktop browsers. This allows the RIA client using Macromedia Flash Player to support a wide range of platforms and devices.Flex is a representation server and application framework launched to meet the needs of enterprise-level programmers who want to develop Ria. It can run on J2EE and. Net platforms. Flex indicates that the server provides standard and declarative programming methods and processes, and
Page 1:Create a Silverlight 3 sample project
Page 7: Add a data model and domain service for the Data Model
Page 6: Silverlight user interface and basic background code programming
Page 1: Write application logic
Page 1: operations and statements of Common Services
Page 1: running results
Page 1: important supplements to related domains
Page 1: Full Text Summary
Show all
Text Tag: Visual Studio, Microsoft Web development,
explorer http://archive.msdn.microsoft.com/RiaServices/Release/ProjectReleases.aspx?ReleaseId=2387explorer http://archive.msdn.microsoft.com/RiaServices/Release/ProjectReleases.aspx?ReleaseId=4786explorer
accessed at their own discretion (asynchronous Content Retrieval)10. Access Multiple middle-layer services (. NET or Java) and backend Data Storage11. Adopting emerging standards such as XML and soap to provide dynamic and efficient front-end applications for networks dominated by evolving web services12. Integration with legacy applications and systems13. Adding new functions in existing web applications and environments to make full use of existing
accessed at their own discretion (asynchronous Content Retrieval)10. Access Multiple middle-layer services (. NET or Java) and backend Data Storage11. Adopting emerging standards such as XML and soap to provide dynamic and efficient front-end applications for networks dominated by evolving web services12. Integration with legacy applications and systems13. Adding new functions in existing web applications and environments to make full use of existing
explorer http://archive.msdn.microsoft.com/RiaServices/Release/ProjectReleases.aspx?ReleaseId=2387explorer http://archive.msdn.microsoft.com/RiaServices/Release/ProjectReleases.aspx?ReleaseId=4786explorer
At that time, we called the traditional desktop software rich client software and Program It is called thin client, so it should be clarified that the rich client program of C/S is not an RIA program. Do not equate "rich client" with "rich experience ", the core of RIA is "rich experience". This "rich experience" not only represents the interface (UI) experience. In the past two years or so, people have b
Preface
Many developers use design patterns to solve repetitive problems. With the emergence of new technologies, such as Ria, you will have the opportunity to build applications that are closer to your needs.Program. In this way, some models that describe traditional server-based applications will become more focused on client capabilities. Such a change will evolve gradually. Fortunately, the technologies used today also apply to this new mode
today will make the user experience more attractive and solve the problem of feedback complexity. Web applications must have the ability to express complexity to allow users to view complex data, configure multi-Choice products, search for large datasets, and allow interaction and exchange between users and data.
Real Ria
To solve today's problems, the ideal web application should be able:1. Use ubiquitous clients2. Operate the Internet on multiple h
Experience instance:
Goowy email of RIA ApplicationHttp://www1.goowy.com
Google Mail for AJAX applicationsHttp://mail.google.com
Common Characteristics of AJAX and RIA:
They are all web applications.All have a user-friendly design concept
AJAX is different from RIA:
AJAX is simple, elegant, user-friendly, and fast to access. Disadvantages: the code is messy, the
Create a Silverlight project in vs2010 and select to support the WCF Ria service, which can easily implement the WCF Ria service and be called by the siverlight client. However, the problem is that this mode is tightly coupled. How to independently develop and deploy a WCF Ria Service to achieve loose coupling between Silverlight and background
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