It also enables you to test condition at either the start or the end of the loop. This expression can include a value of another data type, such as a numeric type, that has been converted to Boolean. The OpenText method opens the file and returns a StreamReader that reads the characters.
This process continues until counter passes end or an Exit For statement is encountered. Transfers control to the next iteration of the Do loop. End While Statement or Do The While statement always checks the condition before it starts the loop. Example In the following example, the statements in the loop continue to run until the index variable is greater than For more information, see Do One or more statements following While, which run every time condition is True.
Visual Basic evaluates these values only at this time and then assigns start to counter. ReadLine End While sr.
If condition is Nothing, Visual Basic treats it as False. When used within nested For…Next loops, Exit For exits the innermost loop and transfers control to the next higher level of nesting. You can also nest different kinds of control structures within each other.
For more information, see Nested Control Structures. The inner loop decrements a loop counter variable for every iteration of the loop.
You can place any number of Exit While statements anywhere in the While loop. Here the condition is checked only after executing the loop once. For more information, see Counter Argument later in this topic. You can include any number of Exit Do statements anywhere in a Do…Loop.
Exit While immediately transfers control to the statement that follows the End While statement. Repeat the loop until condition is False. The Continue For statement transfers control immediately to the next iteration of the loop.
Transfers control out of the Do loop. Repeat the loop until condition is True. The OpenText method opens the file and returns a StreamReader that reads the characters. You can use Exit Do to escape the loop. As Do While is more structured than While Remarks Use a Do An erroneous value or a termination request might create this condition.
If condition is Nothing, Visual Basic treats it as False. Next structure when you want to repeat a set of statements a set number of times. Change the code like this: Example In the following example, the statements in the loop continue to run until the index variable is greater than You might want to exit a loop if you detect a condition that makes it unnecessary or impossible to continue iterating, such as an erroneous value or a termination request.
You can use either While or Until to specify condition, but not both.Remarks. Use a Do Loop structure when you want to repeat a set of statements an indefinite number of times, until a condition is satisfied.
If you want to repeat the statements a set number of times, the For Next Statement is usually a better choice. You can use either While or Until to specify condition, but not both. You can test condition only one time, at either the start or the end.
A for loop is a repetition control structure that allows a developer to efficiently write a loop that needs to execute a specific number of times. Syntax The syntax of a for loop in VBScript is −. Shell Script While Loop Examples last updated July 16, in Categories BASH ksh while loop syntax: while [[condition ]] write a script to input the filename and display the content of file in such a manner that each line has only 10 mint-body.com line in a file exceeds 10 characters then remaining characters should be printed in the.
Let us write a VBScript to print out "Hello World". VBScript ignores spaces, tabs, and newlines that appear within VBScript programs. One can use spaces, tabs, and newlines freely within the program, so you are free to format and indent your programs in a neat and consistent way that makes the code.
If you change the value of counter while inside a loop, your code might be more difficult to read and debug. Changing the value of start, end, or step doesn't affect the iteration values that were determined when the loop was first entered. VBScript Do While Loop. If you do not know the number of times you need to execute a block of code, then you will be using Do While loops.
For example, you want to output the message "Welcome" while the value of the variable x is less than 5.Download