Microsoft KB Archive/210368

= ACC2000: How to Pass an Array as an Argument to a Procedure =

Article ID: 210368

Article Last Modified on 10/11/2006

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APPLIES TO


 * Microsoft Access 2000 Standard Edition

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This article was previously published under Q210368



Moderate: Requires basic macro, coding, and interoperability skills.

This article applies to a Microsoft Access database (.mdb) and to a Microsoft Access project (.adp).



SUMMARY
In order for a procedure to accept an array as an argument, the procedure must declare the array argument with opening and closing parentheses after the argument name. Additionally, when passing the array to the procedure, you must include parentheses after the array name, unless you are using Visual Basic. Otherwise, you may receive the error message "Parameter type mismatch" or "Duplicate definition."

Microsoft provides programming examples for illustration only, without warranty either expressed or implied. This includes, but is not limited to, the implied warranties of merchantability or fitness for a particular purpose. This article assumes that you are familiar with the programming language that is being demonstrated and with the tools that are used to create and to debug procedures. Microsoft support engineers can help explain the functionality of a particular procedure, but they will not modify these examples to provide added functionality or construct procedures to meet your specific requirements.



MORE INFORMATION
The following example demonstrates the correct syntax for procedure declarations with an array: Function YourFunctionName (InArray As String) As Integer Sub YourSubName (InArray As String) The following example demonstrates the correct syntax for procedure calls with an array: Result = YourFunctionName(YourArrayName) YourSubName YourArrayName NOTE: When calling procedures in Visual Basic for Applications, you do not have to include the opening and closing parentheses after "YourArrayName" in the above example.

Example
The following example demonstrates a sample user-defined function that loads an array with string values:   Create a module and type the following line in the Declarations section if it is not already there: Option Explicit   Type the following procedures: '--- 'The function LoadArray loads an array called MyArray 'with string values. After loading the array, the function 'calls a procedure that outputs each array element 'to the Immediate window. '---

Function LoadArray Dim i as Integer ReDim MyArray(10) As String For i = 1 to 10 MyArray(i) = "Test Value: " & i  Next i   DisplayArray MyArray End Function

'--- 'LoadArray Sub Procedure '---

Sub DisplayArray (InArray As String) Dim i as Integer For i = 1 to UBound(InArray) Debug.Print InArray(i) Next i End Sub   To test this function, type the following line in the Immediate window, and then press ENTER: ? LoadArray Note that the following list appears the Immediate window:   Test Value: 1 Test Value: 2 Test Value: 3 Test Value: 4 Test Value: 5 Test Value: 6 Test Value: 7 Test Value: 8 Test Value: 9 Test Value: 10 

