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How many types of validation controls are provided by ASP.NET ?

Posted By :Deco     Posted Date :October 25, 2010    Points :10   Category :ASP.Net 
There are six main types of validation controls :-

RequiredFieldValidator
It checks whether the control have any value. It's used when you want the control should
not be empty.

RangeValidator
It checks if the value in validated control is in that specific range. Example
TxtCustomerCode should not be more than eight length.

CompareValidator
It checks that the value in controls should match some specific value. Example Textbox
TxtPie should be equal to 3.14.

RegularExpressionValidator
When we want the control value should match with a specific regular expression.

CustomValidator
It is used to define UserDefined validation.

ValidationSummary
It displays summary of all current validation errors.
Note:- It's rare that some one will ask step by step all the validation controls. Rather they
will ask for what type of validation which validator will be used. Example in one of the
interviews i was asked how you display summary of all errors in the validation
control...just uttered one word Validation summary.

You can also find related Interview Question to How many types of validation controls are provided by ASP.NET ?  below: 

How many types of validation controls are provided by ASP.NET ?

  
There are six main types of validation controls:-

RequiredFieldValidator: It checks whether the control have any value. It's used when you want the control should not be empty.

RangeValidator: It checks if the value in validated control is in that specific range.

CompareValidator: It checks that the value in controls should match the value in other control.

RegularExpressionValidator: When we want the control value should match with a specific regular expression.

CustomValidator: It is used to define UserDefined validation.

ValidationSummary: It displays summary of all current validation errors. (More...)

what are the Validation controls in Asp.Net?

  
Customs Validator,
Compare Validator,
Range Validator,
RegularExpressionValidator,
RequiredFieldValidator,
ValidationSummary (More...)

How many types of controls in ASP.Net?

  
1) User Control
2) Custom Control
3) Web parts (More...)

what are the Types of controls in WPF?

  
Content Control
Item Control
Layout Control
(More...)

what are the Types of controls in WPF?

  
Content Control
Item Control
Layout Control (More...)

What are server controls?

  
ASP.NET server controls are components that run on the server and encapsulate user-interface and other related functionality. They are used in ASP.NET pages and in ASP.NET code-behind classes. (More...)

All types in C# implicitly derive from.........

  
System.Object Class. System.Object is the parent class of all .NET classes (More...)

What are the types of indexes available with SQL Server?

  
There are basically two types of indexes that we use with the SQL Server. Clustered and the Non-Clustered. (More...)

Different Types of Remote Objects?

  
The remoting infrastructure allows you to create two distinct types of remote objects.

1.Client-activated objects - A client-activated object is a server-side object whose creation and destruction is controlled by the client application. An instance of the remote object is created when the client calls the new operator on the server object. This instance lives as long as the client needs it, and lives across one to many method calls. The object will be subject to garbage collection once it''s determined that no other clients need it.

2.Server-activated objects - A server-activated object''s lifetime is managed by the remote server, not the client that instantiates the object. This differs from the client-activated object, where the client governs when the object will be marked for finalization. It is important to understand that the server-activated objects are not created when a client calls New or Activator.GetObject. They are rather created when the client actually invokes a method on the proxy. There are two types of server activated objects. They are:

I. Single call . Single-call objects handle one, and only one, request coming from a client. When the client calls a method on a single call object, the object constructs itself, performs whatever action the method calls for, and the object is then subject to garbage collection. No state is held between calls, and each call (no matter what client it came from) is called on a new object instance.

II.Singleton - The difference in a singleton and single call lies in lifetime management. While single-call objects are stateless in nature, singletons are stateful objects, meaning that they can be used to retain state across multiple method calls. A singleton object instance serves multiple clients, allowing those clients to share data among themselves. (More...)

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