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Which method is used to delete a file in VB.NET?

Posted By :Abhisek Panda     Posted Date :December 25, 2009    Points :10   Category :VB.Net 
Kill(File name with path):- This method deletes the said file/files from the disk. The name of the file to be deleted is passed to this method as string type arguments. Files are simply deleted and not moved to recycle-bin. The use of wild card(* and /) is permitted in this function.

Kill("C:\Files\abc.txt") This will delete the file abc.txt locates in C:\Files\

Kill("C:\Files\*.txt") This will delete all the files with .txt extension from C:\Files\

You can also find related Interview Question to Which method is used to delete a file in VB.NET?  below: 

Difference Between Delete and Truncate

  
.Delete table is a logged operation, so the deletion of each row gets logged in the transaction log, which makes it slow.

. Truncate table also deletes all the rows in a table, but it won't log the deletion of each row, instead it logs the de-allocation of the data pages of the table, which makes it faster. Of course, truncate table cannot be rolled back.

. Truncate table is functionally identical to delete statement with no "where clause" both remove all rows in the table. But truncate table is faster and uses fewer system and transaction log resources than delete.

. Truncate table removes all rows from a table, but the table structure and its columns, constraints, indexes etc., remains as it is.

. In truncate table the counter used by an identity column for new rows is reset to the seed for the column.

. If you want to retain the identity counter, use delete statement instead.

. If you want to remove table definition and its data, use the drop table statement.

. You cannot use truncate table on a table referenced by a foreign key constraint; instead, use delete statement without a where clause. Because truncate table is not logged, it cannot activate a trigger.

. Truncate table may not be used on tables participating in an indexed view. (More...)

What is Method overloading?

  
Method overloading occurs when a class contains two methods with the same name, but different signatures. (More...)

What is Method Overriding? How to override a function in C#?

  
Use the override modifier to modify a method, a property, an indexer, or an event. An override method provides a new implementation of a member inherited from a base class. The method overridden by an override declaration is known as the overridden base method. The overridden base method must have the same signature as the override method.
You cannot override a non-virtual or static method. The overridden base method must be virtual, abstract, or override. (More...)

Can we call a base class method without creating instance?

  
Its possible If its a static method.

Its possible by inheriting from that class also.

Its possible from derived classes using base keyword. (More...)

what is used to execute a .net file from the command prompt ?

  
csc is C# compiler abbreviation is C Sharp Compiler (More...)

What is Method used to bind the data into gridview ?

  
DataBind() Method used to bind the data into gridview (More...)

What method is used to place a value onto the top of a stack?

  
push() method, Push is the direction that data is being added to the stack. push() member method places a value onto the top of a stack. (More...)

What method removes the value from the top of a stack?

  
The pop() member method removes the value from the top of a stack, which is then returned by the pop() member method to the statement that calls the pop() member method. (More...)

What is the difference between TRUNCATE and DELETE commands?

  
TRUNCATE is a DDL command whereas DELETE is a DML command. Hence DELETE operation can be rolled back, but TRUNCATE operation cannot be rolled back. WHERE clause can be used with DELETE and not with TRUNCATE. (More...)

Disadvantage in File Processing System?

  
1.Data redundancy & inconsistency.
2.Difficult in accessing data.
3.Data isolation.
4.Data integrity.
5.Concurrent access is not possible.
6.Security Problems. (More...)

Difference between Delete and Truncate?

  
Delete table is a logged operation, so the deletion of each row gets logged in the transaction log, which makes it slow.

Truncate table also deletes all the rows in a table, but it won't log the deletion of each row, instead it logs the de-allocation of the data pages of the table, which makes it faster. Of course, truncate table cannot be rolled back.

Truncate table is functionally identical to delete statement with no where clause both remove all rows in the table. But truncate table is faster and uses fewer system and transaction log resources than delete.

Truncate table removes all rows from a table, but the table structure and its columns, constraints, indexes etc. remains as it is.

In truncate table the counter used by an identity column for new rows is reset to the seed for the column.

If you want to retain the identity counter, use delete statement instead.

If you want to remove table definition and its data, use the drop table statement.

You cannot use truncate table on a table referenced by a foreign key constraint; instead, use delete statement without a where clause. Because truncate table is not logged, it cannot activate a trigger.

Shashi Ray (More...)

How can you reference current thread of the method ?

  
"Thread.CurrentThread" refers to the current thread running in the method."CurrentThread" is a public static property. (More...)

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