Vbscript how many items in an array

Can any one help me please. Problem in above solution is, every time when Array is redimed previous value will be get flushed out, so only last value will be stored.

Amar Not so. The Preserve keyword on the ReDim keeps all the existing data in the array intact. Although if memory serves me correctly the syntax is with Preserve directly following the ReDim statement.

That then gives you a ubound to work with from the start. Save my name, email, and website in this browser for the next time I comment. For instance: Dim Dynamic WScript. You need one index for each array dimension. By using an array literal, you can populate an array with an initial set of values at the same time that you create it. When you create an array by using an array literal, you can either supply the array type or use type inference to determine the array type.

The following example shows both options. When you use type inference, the type of the array is determined by the dominant type in the list of literal values.

The dominant type is the type to which all other types in the array can widen. If neither of these unique types can be determined, the dominant type is Object. Because Integer and Long widen only to Double , Double is the dominant type. For more information, see Widening and Narrowing Conversions. You can use type inference only for arrays that are defined as local variables in a type member. If an explicit type definition is absent, arrays defined with array literals at the class level are of type Object[].

For more information, see Local type inference. Note that the previous example defines values as an array of type Double even though all the array literals are of type Integer. You can create this array because the values in the array literal can widen to Double values. You can also create and populate a multidimensional array by using nested array literals.

The following example creates a two-dimensional array of integers by using nested array literals. When using nested array literals to create and populate an array, an error occurs if the number of elements in the nested array literals don't match.

An error also occurs if you explicitly declare the array variable to have a different number of dimensions than the array literals. Just as you can for one-dimensional arrays, you can rely on type inference when creating a multidimensional array with nested array literals. The inferred type is the dominant type for all the values in all the array literals for all nesting level. The following example creates a two-dimensional array of type Double[,] from values that are of type Integer and Double.

When you iterate through an array, you access each element in the array from the lowest index to the highest or from the highest to the lowest. Typically, use either the For Next Statement or the For Each Next Statement to iterate through the elements of an array. When you don't know the upper bounds of the array, you can call the Array. GetUpperBound method to get the highest value of the index. Although lowest index value is almost always 0, you can call the Array.

GetLowerBound method to get the lowest value of the index. The following example iterates through a one-dimensional array by using the For Next statement. The following example iterates through a multidimensional array by using a For The GetUpperBound method has a parameter that specifies the dimension.

GetUpperBound 0 returns the highest index of the first dimension, and GetUpperBound 1 returns the highest index of the second dimension. The following example uses a For Each Next Statement to iterate through a one-dimensional array and a two-dimensional array. The size of an array is the product of the lengths of all its dimensions. It represents the total number of elements currently contained in the array. For example, the following example declares a 2-dimensional array with four elements in each dimension.

This discussion of array size does not apply to jagged arrays. For information on jagged arrays and determining the size of a jagged array, see the Jagged arrays section. You can find the size of an array by using the Array. Length property. You can find the length of each dimension of a multidimensional array by using the Array. GetLength method. You can resize an array variable by assigning a new array object to it or by using the ReDim Statement statement.

The following example uses the ReDim statement to change a element array to a element array. Every array has a data type, which differs from the data type of its elements. There is no single data type for all arrays. Instead, the data type of an array is determined by the number of dimensions, or rank , of the array, and the data type of the elements in the array. Two array variables are of the same data type only when they have the same rank and their elements have the same data type.

The lengths of the dimensions of an array do not influence the array data type. Every array inherits from the System. Array class, and you can declare a variable to be of type Array , but you cannot create an array of type Array.

For example, although the following code declares the arr variable to be of type Array and calls the Array. CreateInstance method to instantiate the array, the array's type proves to be Object[]. Also, the ReDim Statement cannot operate on a variable declared as type Array. For these reasons, and for type safety, it is advisable to declare every array as a specific type. The following example calls the both the GetType method and the TypeName function to determine the type of an array.

The array type is Byte ,. Note that the Type. Next Page. Previous Page Print Page. Save Close. Dashboard Logout. A Function, which returns an integer that corresponds to the smallest subscript of the given arrays. A Function, which returns an integer that corresponds to the Largest subscript of the given arrays. A Function, which returns an array that contains a specified number of values. Splitted based on a Delimiter. A Function, which returns a String that contains a specified number of substrings in an array.

This is an exact opposite function of Split Method.