WCF (Windows Communication Foundation) offers Distributed Programming through Service Oriented Programming Model.
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How to access ViewState value of the previous page in the current page ?
Previous page's information is stored in a property called PreviousPage and you can access it using the following code,
Page prePage = this.PreviousPage;
Label totalEmployees = prePage.FindControl("lblTotEmployees");
Response.Write(totalEmployees.Text);
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What are the differences between Cache object and Application object ?
| Sno | Application | Cache |
| 1 | Life of Application objects are till the end of Application unless you destroy it. | Also provides application-wide scope but get destroyed by expiration mechanism. |
| 2 | You have Locking mechanism in Application object | Not available. |
| 3 | Not available. | Has a feature called SQL Cache dependency using which you can invalidate a cache object based on the changes to its source in the table |
What is marshalling? What are the types of marshalling?
Marshalling is the process in which the data is serialized at one application domain and deserialized at the another application domain or vice versa.
Types :
1. Marshal by value
2. Marshal by reference
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